blob: fcd842708f1196346d431a94a41b2a62a5d98dda [file] [log] [blame]
Paul Bakkerdaae3b72015-02-08 15:49:54 +01001mbed TLS ChangeLog (Sorted per branch, date)
Paul Bakker99ed6782011-01-05 14:48:42 +00002
Dave Rodgmandca85092021-04-26 15:59:51 +01003= Mbed TLS 3.0.0 branch released 2021-xx-xx
Dave Rodgman10ba5532021-04-26 14:58:26 +01004
5API changes
6 * Remove HAVEGE module.
7 The design of HAVEGE makes it unsuitable for microcontrollers. Platforms
8 with a more complex CPU usually have an operating system interface that
9 provides better randomness. Instead of HAVEGE, declare OS or hardware RNG
10 interfaces with mbedtls_entropy_add_source() and/or use an entropy seed
11 file created securely during device provisioning. See
12 https://tls.mbed.org/kb/how-to/add-entropy-sources-to-entropy-pool for
13 more information.
14 * Add missing const attributes to API functions.
15 * Remove helpers for the transition from Mbed TLS 1.3 to Mbed TLS 2.0: the
16 header compat-1.3.h and the script rename.pl.
17 * Remove certs module from the API.
18 Transfer keys and certificates embedded in the library to the test
19 component. This contributes to minimizing library API and discourages
20 users from using unsafe keys in production.
21 * Move alt helpers and definitions.
22 Various helpers and definitions available for use in alt implementations
23 have been moved out of the include/ directory and into the library/
24 directory. The files concerned are ecp_internal.h and rsa_internal.h
Gilles Peskine6a2fb612021-05-24 22:25:04 +020025 which have also been renamed to ecp_internal_alt.h and rsa_alt_helpers.h
Dave Rodgman10ba5532021-04-26 14:58:26 +010026 respectively.
27 * Move internal headers.
28 Header files that were only meant for the library's internal use and
29 were not meant to be used in application code have been moved out of
30 the include/ directory. The headers concerned are bn_mul.h, aesni.h,
31 padlock.h, entropy_poll.h and *_internal.h.
32 * Drop support for parsing SSLv2 ClientHello
33 (MBEDTLS_SSL_SRV_SUPPORT_SSLV2_CLIENT_HELLO).
34 * Drop support for SSLv3 (MBEDTLS_SSL_PROTO_SSL3).
Dave Rodgman10ba5532021-04-26 14:58:26 +010035 * Drop support for TLS record-level compression (MBEDTLS_ZLIB_SUPPORT).
36 * Drop support for RC4 TLS ciphersuites.
37 * Drop support for single-DES ciphersuites.
38 * Drop support for MBEDTLS_SSL_HW_RECORD_ACCEL.
39
40Requirement changes
41 * The library now uses the %zu format specifier with the printf() family of
42 functions, so requires a toolchain that supports it. This change does not
43 affect the maintained LTS branches, so when contributing changes please
44 bear this in mind and do not add them to backported code.
45
46Removals
47 * Remove the MBEDTLS_TLS_DEFAULT_ALLOW_SHA1_IN_CERTIFICATES
48 compile-time option, which was off by default. Users should not trust
49 certificates signed with SHA-1 due to the known attacks against SHA-1.
Manuel Pégourié-Gonnard143b1e32021-05-05 09:46:01 +020050 If needed, SHA-1 certificates can still be verified by using a custom
Manuel Pégourié-Gonnarde7563062021-04-26 10:08:29 +020051 verification profile.
52
Dave Rodgman10ba5532021-04-26 14:58:26 +010053 * Removed deprecated things in psa/crypto_compat.h. Fixes #4284
54 * Removed deprecated functions from hashing modules. Fixes #4280.
55 * Remove PKCS#11 library wrapper. PKCS#11 has limited functionality,
56 lacks automated tests and has scarce documentation. Also, PSA Crypto
57 provides a more flexible private key management.
58 More details on PCKS#11 wrapper removal can be found in the mailing list
59 https://lists.trustedfirmware.org/pipermail/mbed-tls/2020-April/000024.html
60 * Remove deprecated error codes. Fix #4283
61
62Features
63 * Add mbedtls_rsa_rsassa_pss_sign_ext() function allowing to generate a
64 signature with a specific salt length. This function allows to validate
65 test cases provided in the NIST's CAVP test suite. Contributed by Cédric
66 Meuter in PR #3183.
67
68Bugfix
69 * Fix premature fopen() call in mbedtls_entropy_write_seed_file which may
70 lead to the seed file corruption in case if the path to the seed file is
71 equal to MBEDTLS_PLATFORM_STD_NV_SEED_FILE. Contributed by Victor
72 Krasnoshchok in #3616.
73 * PSA functions creating a key now return PSA_ERROR_INVALID_ARGUMENT rather
74 than PSA_ERROR_INVALID_HANDLE when the identifier specified for the key
75 to create is not valid, bringing them in line with version 1.0.0 of the
76 specification. Fix #4271.
77 * Add printf function attributes to mbedtls_debug_print_msg to ensure we
78 get printf format specifier warnings.
79 * PSA functions other than psa_open_key now return PSA_ERROR_INVALID_HANDLE
80 rather than PSA_ERROR_DOES_NOT_EXIST for an invalid handle, bringing them
81 in line with version 1.0.0 of the specification. Fix #4162.
82 * Fix a bug in ECDSA that would cause it to fail when the hash is all-bits
83 zero. Fixes #1792
Gilles Peskinef4998b02021-06-10 15:51:54 +020084 * Fix some cases in the bignum module where the library constructed an
85 unintended representation of the value 0 which was not processed
86 correctly by some bignum operations. This could happen when
87 mbedtls_mpi_read_string() was called on "-0", or when
88 mbedtls_mpi_mul_mpi() and mbedtls_mpi_mul_int() was called with one of
89 the arguments being negative and the other being 0. Fixes #4643.
Dave Rodgman10ba5532021-04-26 14:58:26 +010090
91Changes
92 * Fix the setting of the read timeout in the DTLS sample programs.
93 * Add extra printf compiler warning flags to builds.
94 * Fix memsan build false positive in x509_crt.c with clang 11
95 * There is ongoing work for the next release (= Mbed TLS 3.0.0 branch to
96 be released 2021-xx-xx), including various API-breaking changes.
97
Dave Rodgman74755e42021-03-08 18:35:44 +000098= mbed TLS 2.26.0 branch released 2021-03-08
99
100API changes
101 * Renamed the PSA Crypto API output buffer size macros to bring them in line
102 with version 1.0.0 of the specification.
103 * The API glue function mbedtls_ecc_group_of_psa() now takes the curve size
104 in bits rather than bytes, with an additional flag to indicate if the
105 size may have been rounded up to a whole number of bytes.
106 * Renamed the PSA Crypto API AEAD tag length macros to bring them in line
107 with version 1.0.0 of the specification.
108
109Default behavior changes
110 * In mbedtls_rsa_context objects, the ver field was formerly documented
111 as always 0. It is now reserved for internal purposes and may take
112 different values.
113
114New deprecations
115 * PSA_KEY_EXPORT_MAX_SIZE, PSA_HASH_SIZE, PSA_MAC_FINAL_SIZE,
116 PSA_BLOCK_CIPHER_BLOCK_SIZE, PSA_MAX_BLOCK_CIPHER_BLOCK_SIZE and
117 PSA_ALG_TLS12_PSK_TO_MS_MAX_PSK_LEN have been renamed, and the old names
118 deprecated.
119 * PSA_ALG_AEAD_WITH_DEFAULT_TAG_LENGTH and PSA_ALG_AEAD_WITH_TAG_LENGTH
120 have been renamed, and the old names deprecated.
121
122Features
123 * The PSA crypto subsystem can now use HMAC_DRBG instead of CTR_DRBG.
124 CTR_DRBG is used by default if it is available, but you can override
125 this choice by setting MBEDTLS_PSA_HMAC_DRBG_MD_TYPE at compile time.
126 Fix #3354.
127 * Automatic fallback to a software implementation of ECP when
128 MBEDTLS_ECP_xxx_ALT accelerator hooks are in use can now be turned off
129 through setting the new configuration flag MBEDTLS_ECP_NO_FALLBACK.
130 * The PSA crypto subsystem can now be configured to use less static RAM by
131 tweaking the setting for the maximum amount of keys simultaneously in RAM.
132 MBEDTLS_PSA_KEY_SLOT_COUNT sets the maximum number of volatile keys that
133 can exist simultaneously. It has a sensible default if not overridden.
134 * Partial implementation of the PSA crypto driver interface: Mbed TLS can
135 now use an external random generator instead of the library's own
136 entropy collection and DRBG code. Enable MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG
137 and see the documentation of mbedtls_psa_external_get_random() for details.
138 * Applications using both mbedtls_xxx and psa_xxx functions (for example,
139 applications using TLS and MBEDTLS_USE_PSA_CRYPTO) can now use the PSA
140 random generator with mbedtls_xxx functions. See the documentation of
141 mbedtls_psa_get_random() for details.
142 * In the PSA API, the policy for a MAC or AEAD algorithm can specify a
143 minimum MAC or tag length thanks to the new wildcards
144 PSA_ALG_AT_LEAST_THIS_LENGTH_MAC and
145 PSA_ALG_AEAD_WITH_AT_LEAST_THIS_LENGTH_TAG.
146
147Security
148 * Fix a security reduction in CTR_DRBG when the initial seeding obtained a
149 nonce from entropy. Applications were affected if they called
150 mbedtls_ctr_drbg_set_nonce_len(), if they called
151 mbedtls_ctr_drbg_set_entropy_len() with a size that was 3/2 times the key
152 length, or when the entropy module uses SHA-256 and CTR_DRBG uses AES-256.
153 In such cases, a random nonce was necessary to achieve the advertised
154 security strength, but the code incorrectly used a constant instead of
155 entropy from the nonce.
156 Found by John Stroebel in #3819 and fixed in #3973.
157 * Fix a buffer overflow in mbedtls_mpi_sub_abs() when calculating
158 |A| - |B| where |B| is larger than |A| and has more limbs (so the
159 function should return MBEDTLS_ERR_MPI_NEGATIVE_VALUE). Only
160 applications calling mbedtls_mpi_sub_abs() directly are affected:
161 all calls inside the library were safe since this function is
162 only called with |A| >= |B|. Reported by Guido Vranken in #4042.
163 * Fix an errorneous estimation for an internal buffer in
164 mbedtls_pk_write_key_pem(). If MBEDTLS_MPI_MAX_SIZE is set to an odd
165 value the function might fail to write a private RSA keys of the largest
166 supported size.
167 Found by Daniel Otte, reported in #4093 and fixed in #4094.
168 * Fix a stack buffer overflow with mbedtls_net_poll() and
169 mbedtls_net_recv_timeout() when given a file descriptor that is
170 beyond FD_SETSIZE. Reported by FigBug in #4169.
171 * Guard against strong local side channel attack against base64 tables by
172 making access aceess to them use constant flow code.
173
174Bugfix
175 * Fix use-after-scope error in programs/ssl/ssl_client2.c and ssl_server2.c
176 * Fix memory leak that occured when calling psa_close_key() on a
177 wrapped key with MBEDTLS_PSA_CRYPTO_SE_C defined.
178 * Fix an incorrect error code if an RSA private operation glitched.
179 * Fix a memory leak in an error case in psa_generate_derived_key_internal().
180 * Fix a resource leak in CTR_DRBG and HMAC_DRBG when MBEDTLS_THREADING_C
181 is enabled, on platforms where initializing a mutex allocates resources.
182 This was a regression introduced in the previous release. Reported in
183 #4017, #4045 and #4071.
184 * Ensure that calling mbedtls_rsa_free() or mbedtls_entropy_free()
185 twice is safe. This happens for RSA when some Mbed TLS library functions
186 fail. Such a double-free was not safe when MBEDTLS_THREADING_C was
187 enabled on platforms where freeing a mutex twice is not safe.
188 * Fix a resource leak in a bad-arguments case of mbedtls_rsa_gen_key()
189 when MBEDTLS_THREADING_C is enabled on platforms where initializing
190 a mutex allocates resources.
191 * Fixes a bug where, if the library was configured to include support for
192 both the old SE interface and the new PSA driver interface, external keys were
193 not loaded from storage. This was fixed by #3996.
194 * This change makes 'mbedtls_x509write_crt_set_basic_constraints'
195 consistent with RFC 5280 4.2.1.9 which says: "Conforming CAs MUST
196 include this extension in all CA certificates that contain public keys
197 used to validate digital signatures on certificates and MUST mark the
198 extension as critical in such certificates." Previous to this change,
199 the extension was always marked as non-critical. This was fixed by
200 #3698.
201
202Changes
203 * A new library C file psa_crypto_client.c has been created to contain
204 the PSA code needed by a PSA crypto client when the PSA crypto
205 implementation is not included into the library.
206 * On recent enough versions of FreeBSD and DragonFlyBSD, the entropy module
207 now uses the getrandom syscall instead of reading from /dev/urandom.
208
Janos Follath56b38c22020-12-09 01:34:21 +0000209= mbed TLS 2.25.0 branch released 2020-12-11
Janos Follath7ac5fd12020-12-09 15:03:46 +0000210
211API changes
212 * The numerical values of the PSA Crypto API macros have been updated to
213 conform to version 1.0.0 of the specification.
214 * PSA_ALG_STREAM_CIPHER replaces PSA_ALG_CHACHA20 and PSA_ALG_ARC4.
215 The underlying stream cipher is determined by the key type
216 (PSA_KEY_TYPE_CHACHA20 or PSA_KEY_TYPE_ARC4).
217 * The functions mbedtls_cipher_auth_encrypt() and
218 mbedtls_cipher_auth_decrypt() no longer accept NIST_KW contexts,
219 as they have no way to check if the output buffer is large enough.
220 Please use mbedtls_cipher_auth_encrypt_ext() and
221 mbedtls_cipher_auth_decrypt_ext() instead. Credit to OSS-Fuzz and
222 Cryptofuzz. Fixes #3665.
223
224Requirement changes
Janos Follathe9216262020-12-10 11:03:01 +0000225 * Update the minimum required CMake version to 2.8.12. This silences a
226 warning on CMake 3.19.0. #3801
Janos Follath7ac5fd12020-12-09 15:03:46 +0000227
228New deprecations
Bence Szépkútife9a4252021-02-08 18:13:02 +0100229 * PSA_ALG_CHACHA20 and PSA_ALG_ARC4 have been deprecated.
Janos Follath7ac5fd12020-12-09 15:03:46 +0000230 Use PSA_ALG_STREAM_CIPHER instead.
231 * The functions mbedtls_cipher_auth_encrypt() and
232 mbedtls_cipher_auth_decrypt() are deprecated in favour of the new
233 functions mbedtls_cipher_auth_encrypt_ext() and
234 mbedtls_cipher_auth_decrypt_ext(). Please note that with AEAD ciphers,
235 these new functions always append the tag to the ciphertext, and include
236 the tag in the ciphertext length.
237
238Features
Janos Follathd6ce1162020-12-09 16:32:01 +0000239 * Partial implementation of the new PSA Crypto accelerator APIs. (Symmetric
240 ciphers, asymmetric signing/verification and key generation, validate_key
241 entry point, and export_public_key interface.)
Janos Follath7ac5fd12020-12-09 15:03:46 +0000242 * Add support for ECB to the PSA cipher API.
Janos Follath7ac5fd12020-12-09 15:03:46 +0000243 * In PSA, allow using a key declared with a base key agreement algorithm
244 in combined key agreement and derivation operations, as long as the key
245 agreement algorithm in use matches the algorithm the key was declared with.
246 This is currently non-standard behaviour, but expected to make it into a
247 future revision of the PSA Crypto standard.
248 * Add MBEDTLS_TARGET_PREFIX CMake variable, which is prefixed to the mbedtls,
249 mbedcrypto, mbedx509 and apidoc CMake target names. This can be used by
250 external CMake projects that include this one to avoid CMake target name
251 clashes. The default value of this variable is "", so default target names
252 are unchanged.
253 * Add support for DTLS-SRTP as defined in RFC 5764. Contributed by Johan
254 Pascal, improved by Ron Eldor.
255 * In the PSA API, it is no longer necessary to open persistent keys:
256 operations now accept the key identifier. The type psa_key_handle_t is now
257 identical to psa_key_id_t instead of being platform-defined. This bridges
258 the last major gap to compliance with the PSA Cryptography specification
259 version 1.0.0. Opening persistent keys is still supported for backward
260 compatibility, but will be deprecated and later removed in future
261 releases.
Janos Follath7ac5fd12020-12-09 15:03:46 +0000262 * PSA_AEAD_NONCE_LENGTH, PSA_AEAD_NONCE_MAX_SIZE, PSA_CIPHER_IV_LENGTH and
263 PSA_CIPHER_IV_MAX_SIZE macros have been added as defined in version
264 1.0.0 of the PSA Crypto API specification.
265
266Security
267 * The functions mbedtls_cipher_auth_encrypt() and
268 mbedtls_cipher_auth_decrypt() would write past the minimum documented
269 size of the output buffer when used with NIST_KW. As a result, code using
270 those functions as documented with NIST_KW could have a buffer overwrite
271 of up to 15 bytes, with consequences ranging up to arbitrary code
272 execution depending on the location of the output buffer.
273 * Limit the size of calculations performed by mbedtls_mpi_exp_mod to
274 MBEDTLS_MPI_MAX_SIZE to prevent a potential denial of service when
275 generating Diffie-Hellman key pairs. Credit to OSS-Fuzz.
276 * A failure of the random generator was ignored in mbedtls_mpi_fill_random(),
277 which is how most uses of randomization in asymmetric cryptography
278 (including key generation, intermediate value randomization and blinding)
279 are implemented. This could cause failures or the silent use of non-random
280 values. A random generator can fail if it needs reseeding and cannot not
281 obtain entropy, or due to an internal failure (which, for Mbed TLS's own
282 CTR_DRBG or HMAC_DRBG, can only happen due to a misconfiguration).
283 * Fix a compliance issue whereby we were not checking the tag on the
284 algorithm parameters (only the size) when comparing the signature in the
285 description part of the cert to the real signature. This meant that a
286 NULL algorithm parameters entry would look identical to an array of REAL
287 (size zero) to the library and thus the certificate would be considered
288 valid. However, if the parameters do not match in *any* way then the
289 certificate should be considered invalid, and indeed OpenSSL marks these
290 certs as invalid when mbedtls did not.
291 Many thanks to guidovranken who found this issue via differential fuzzing
292 and reported it in #3629.
293 * Zeroising of local buffers and variables which are used for calculations
294 in mbedtls_pkcs5_pbkdf2_hmac(), mbedtls_internal_sha*_process(),
295 mbedtls_internal_md*_process() and mbedtls_internal_ripemd160_process()
296 functions to erase sensitive data from memory. Reported by
297 Johan Malmgren and Johan Uppman Bruce from Sectra.
298
299Bugfix
Janos Follath76027f62020-12-09 16:28:35 +0000300 * Fix an invalid (but nonzero) return code from mbedtls_pk_parse_subpubkey()
301 when the input has trailing garbage. Fixes #2512.
Janos Follath7ac5fd12020-12-09 15:03:46 +0000302 * Fix build failure in configurations where MBEDTLS_USE_PSA_CRYPTO is
303 enabled but ECDSA is disabled. Contributed by jdurkop. Fixes #3294.
304 * Include the psa_constant_names generated source code in the source tree
305 instead of generating it at build time. Fixes #3524.
306 * Fix rsa_prepare_blinding() to retry when the blinding value is not
307 invertible (mod N), instead of returning MBEDTLS_ERR_RSA_RNG_FAILED. This
308 addresses a regression but is rare in practice (approx. 1 in 2/sqrt(N)).
309 Found by Synopsys Coverity, fix contributed by Peter Kolbus (Garmin).
310 Fixes #3647.
311 * Use socklen_t on Android and other POSIX-compliant system
312 * Fix the build when the macro _GNU_SOURCE is defined to a non-empty value.
313 Fix #3432.
314 * Consistently return PSA_ERROR_INVALID_ARGUMENT on invalid cipher input
315 sizes (instead of PSA_ERROR_BAD_STATE in some cases) to make the
316 psa_cipher_* functions compliant with the PSA Crypto API specification.
317 * mbedtls_ecp_curve_list() now lists Curve25519 and Curve448 under the names
318 "x25519" and "x448". These curves support ECDH but not ECDSA. If you need
319 only the curves that support ECDSA, filter the list with
320 mbedtls_ecdsa_can_do().
321 * Fix psa_generate_key() returning an error when asked to generate
322 an ECC key pair on Curve25519 or secp244k1.
323 * Fix psa_key_derivation_output_key() to allow the output of a combined key
324 agreement and subsequent key derivation operation to be used as a key
325 inside of the PSA Crypto core.
326 * Fix handling of EOF against 0xff bytes and on platforms with unsigned
327 chars. Fixes a build failure on platforms where char is unsigned. Fixes
328 #3794.
329 * Fix an off-by-one error in the additional data length check for
330 CCM, which allowed encryption with a non-standard length field.
331 Fixes #3719.
332 * Correct the default IV size for mbedtls_cipher_info_t structures using
333 MBEDTLS_MODE_ECB to 0, since ECB mode ciphers don't use IVs.
334 * Make arc4random_buf available on NetBSD and OpenBSD when _POSIX_C_SOURCE is
335 defined. Fix contributed in #3571.
336 * Fix conditions for including string.h in error.c. Fixes #3866.
337 * psa_set_key_id() now also sets the lifetime to persistent for keys located
338 in a secure element.
339 * Attempting to create a volatile key with a non-zero key identifier now
340 fails. Previously the key identifier was just ignored when creating a
341 volatile key.
342 * Attempting to create or register a key with a key identifier in the vendor
343 range now fails.
344 * Fix build failures on GCC 11. Fixes #3782.
345 * Add missing arguments of debug message in mbedtls_ssl_decrypt_buf.
346 * Fix a memory leak in mbedtls_mpi_sub_abs() when the result was negative
347 (an error condition) and the second operand was aliased to the result.
348 * Fix a case in elliptic curve arithmetic where an out-of-memory condition
349 could go undetected, resulting in an incorrect result.
350 * In CTR_DRBG and HMAC_DRBG, don't reset the reseed interval in seed().
351 Fixes #2927.
352 * In PEM writing functions, fill the trailing part of the buffer with null
353 bytes. This guarantees that the corresponding parsing function can read
354 the buffer back, which was the case for mbedtls_x509write_{crt,csr}_pem
355 until this property was inadvertently broken in Mbed TLS 2.19.0.
356 Fixes #3682.
357 * Fix a build failure that occurred with the MBEDTLS_AES_SETKEY_DEC_ALT
358 option on. In this configuration key management methods that are required
359 for MBEDTLS_CIPHER_MODE_XTS were excluded from the build and made it fail.
360 Fixes #3818. Reported by John Stroebel.
361
362Changes
363 * Reduce stack usage significantly during sliding window exponentiation.
364 Reported in #3591 and fix contributed in #3592 by Daniel Otte.
365 * The PSA persistent storage format is updated to always store the key bits
366 attribute. No automatic upgrade path is provided. Previously stored keys
367 must be erased, or manually upgraded based on the key storage format
368 specification (docs/architecture/mbed-crypto-storage-specification.md).
369 Fixes #3740.
370 * Remove the zeroization of a pointer variable in AES rounds. It was valid
371 but spurious and misleading since it looked like a mistaken attempt to
372 zeroize the pointed-to buffer. Reported by Antonio de la Piedra, CEA
373 Leti, France.
374
Janos Follath6012f0e2020-08-26 15:32:10 +0100375= mbed TLS 2.24.0 branch released 2020-09-01
Janos Follathc18a7b82020-08-26 14:49:16 +0100376
377API changes
Janos Follath6012f0e2020-08-26 15:32:10 +0100378 * In the PSA API, rename the types of elliptic curve and Diffie-Hellman
379 group families to psa_ecc_family_t and psa_dh_family_t, in line with the
380 PSA Crypto API specification version 1.0.0.
Janos Follathc18a7b82020-08-26 14:49:16 +0100381 Rename associated macros as well:
382 PSA_ECC_CURVE_xxx renamed to PSA_ECC_FAMILY_xxx
383 PSA_DH_GROUP_xxx renamed to PSA_DH_FAMILY_xxx
384 PSA_KEY_TYPE_GET_CURVE renamed to to PSA_KEY_TYPE_ECC_GET_FAMILY
385 PSA_KEY_TYPE_GET_GROUP renamed to PSA_KEY_TYPE_DH_GET_FAMILY
386
387Default behavior changes
388 * Stop storing persistent information about externally stored keys created
389 through PSA Crypto with a volatile lifetime. Reported in #3288 and
390 contributed by Steven Cooreman in #3382.
391
392Features
393 * The new function mbedtls_ecp_write_key() exports private ECC keys back to
394 a byte buffer. It is the inverse of the existing mbedtls_ecp_read_key().
395 * Support building on e2k (Elbrus) architecture: correctly enable
396 -Wformat-signedness, and fix the code that causes signed-one-bit-field
397 and sign-compare warnings. Contributed by makise-homura (Igor Molchanov)
398 <akemi_homura@kurisa.ch>.
399
400Security
401 * Fix a vulnerability in the verification of X.509 certificates when
402 matching the expected common name (the cn argument of
403 mbedtls_x509_crt_verify()) with the actual certificate name: when the
404 subjecAltName extension is present, the expected name was compared to any
405 name in that extension regardless of its type. This means that an
406 attacker could for example impersonate a 4-bytes or 16-byte domain by
407 getting a certificate for the corresponding IPv4 or IPv6 (this would
408 require the attacker to control that IP address, though). Similar attacks
409 using other subjectAltName name types might be possible. Found and
410 reported by kFYatek in #3498.
411 * When checking X.509 CRLs, a certificate was only considered as revoked if
412 its revocationDate was in the past according to the local clock if
413 available. In particular, on builds without MBEDTLS_HAVE_TIME_DATE,
414 certificates were never considered as revoked. On builds with
415 MBEDTLS_HAVE_TIME_DATE, an attacker able to control the local clock (for
416 example, an untrusted OS attacking a secure enclave) could prevent
417 revocation of certificates via CRLs. Fixed by no longer checking the
418 revocationDate field, in accordance with RFC 5280. Reported by
419 yuemonangong in #3340. Reported independently and fixed by
420 Raoul Strackx and Jethro Beekman in #3433.
421 * In (D)TLS record decryption, when using a CBC ciphersuites without the
422 Encrypt-then-Mac extension, use constant code flow memory access patterns
423 to extract and check the MAC. This is an improvement to the existing
424 countermeasure against Lucky 13 attacks. The previous countermeasure was
425 effective against network-based attackers, but less so against local
426 attackers. The new countermeasure defends against local attackers, even
427 if they have access to fine-grained measurements. In particular, this
428 fixes a local Lucky 13 cache attack found and reported by Tuba Yavuz,
429 Farhaan Fowze, Ken (Yihan) Bai, Grant Hernandez, and Kevin Butler
430 (University of Florida) and Dave Tian (Purdue University).
431 * Fix side channel in RSA private key operations and static (finite-field)
432 Diffie-Hellman. An adversary with precise enough timing and memory access
433 information (typically an untrusted operating system attacking a secure
434 enclave) could bypass an existing counter-measure (base blinding) and
435 potentially fully recover the private key.
436 * Fix a 1-byte buffer overread in mbedtls_x509_crl_parse_der().
437 Credit to OSS-Fuzz for detecting the problem and to Philippe Antoine
438 for pinpointing the problematic code.
439 * Zeroising of plaintext buffers in mbedtls_ssl_read() to erase unused
440 application data from memory. Reported in #689 by
441 Johan Uppman Bruce of Sectra.
442
443Bugfix
444 * Library files installed after a CMake build no longer have execute
445 permission.
Janos Follath6012f0e2020-08-26 15:32:10 +0100446 * Use local labels in mbedtls_padlock_has_support() to fix an invalid symbol
447 redefinition if the function is inlined.
Janos Follathc18a7b82020-08-26 14:49:16 +0100448 Reported in #3451 and fix contributed in #3452 by okhowang.
449 * Fix the endianness of Curve25519 keys imported/exported through the PSA
450 APIs. psa_import_key and psa_export_key will now correctly expect/output
451 Montgomery keys in little-endian as defined by RFC7748. Contributed by
452 Steven Cooreman in #3425.
453 * Fix build errors when the only enabled elliptic curves are Montgomery
454 curves. Raised by signpainter in #941 and by Taiki-San in #1412. This
455 also fixes missing declarations reported by Steven Cooreman in #1147.
456 * Fix self-test failure when the only enabled short Weierstrass elliptic
457 curve is secp192k1. Fixes #2017.
458 * PSA key import will now correctly import a Curve25519/Curve448 public key
459 instead of erroring out. Contributed by Steven Cooreman in #3492.
460 * Use arc4random_buf on NetBSD instead of rand implementation with cyclical
461 lower bits. Fix contributed in #3540.
462 * Fix a memory leak in mbedtls_md_setup() when using HMAC under low memory
463 conditions. Reported and fix suggested by Guido Vranken in #3486.
464 * Fix bug in redirection of unit test outputs on platforms where stdout is
465 defined as a macro. First reported in #2311 and fix contributed in #3528.
466
467Changes
468 * Only pass -Wformat-signedness to versions of GCC that support it. Reported
469 in #3478 and fix contributed in #3479 by okhowang.
470 * Reduce the stack consumption of mbedtls_x509write_csr_der() which
471 previously could lead to stack overflow on constrained devices.
472 Contributed by Doru Gucea and Simon Leet in #3464.
473 * Undefine the ASSERT macro before defining it locally, in case it is defined
474 in a platform header. Contributed by Abdelatif Guettouche in #3557.
475 * Update copyright notices to use Linux Foundation guidance. As a result,
476 the copyright of contributors other than Arm is now acknowledged, and the
477 years of publishing are no longer tracked in the source files. This also
478 eliminates the need for the lines declaring the files to be part of
479 MbedTLS. Fixes #3457.
480 * Add the command line parameter key_pwd to the ssl_client2 and ssl_server2
481 example applications which allows to provide a password for the key file
482 specified through the existing key_file argument. This allows the use of
483 these applications with password-protected key files. Analogously but for
484 ssl_server2 only, add the command line parameter key_pwd2 which allows to
485 set a password for the key file provided through the existing key_file2
486 argument.
487
Janos Follath13cba682020-06-26 12:40:52 +0100488= mbed TLS 2.23.0 branch released 2020-07-01
Janos Follath19590102020-06-26 11:26:02 +0100489
490Default behavior changes
491 * In the experimental PSA secure element interface, change the encoding of
492 key lifetimes to encode a persistence level and the location. Although C
493 prototypes do not effectively change, code calling
494 psa_register_se_driver() must be modified to pass the driver's location
495 instead of the keys' lifetime. If the library is upgraded on an existing
496 device, keys created with the old lifetime value will not be readable or
497 removable through Mbed TLS after the upgrade.
498
499Features
500 * New functions in the error module return constant strings for
501 high- and low-level error codes, complementing mbedtls_strerror()
502 which constructs a string for any error code, including compound
503 ones, but requires a writable buffer. Contributed by Gaurav Aggarwal
504 in #3176.
505 * The new utility programs/ssl/ssl_context_info prints a human-readable
506 dump of an SSL context saved with mbedtls_ssl_context_save().
507 * Add support for midipix, a POSIX layer for Microsoft Windows.
508 * Add new mbedtls_x509_crt_parse_der_with_ext_cb() routine which allows
509 parsing unsupported certificate extensions via user provided callback.
510 Contributed by Nicola Di Lieto <nicola.dilieto@gmail.com> in #3243 as
511 a solution to #3241.
512 * Pass the "certificate policies" extension to the callback supplied to
513 mbedtls_x509_crt_parse_der_with_ext_cb() if it contains unsupported
514 policies (#3419).
515 * Added support to entropy_poll for the kern.arandom syscall supported on
516 some BSD systems. Contributed by Nia Alarie in #3423.
517 * Add support for Windows 2000 in net_sockets. Contributed by opatomic. #3239
518
519Security
520 * Fix a side channel vulnerability in modular exponentiation that could
521 reveal an RSA private key used in a secure enclave. Noticed by Sangho Lee,
522 Ming-Wei Shih, Prasun Gera, Taesoo Kim and Hyesoon Kim (Georgia Institute
523 of Technology); and Marcus Peinado (Microsoft Research). Reported by Raoul
524 Strackx (Fortanix) in #3394.
525 * Fix side channel in mbedtls_ecp_check_pub_priv() and
526 mbedtls_pk_parse_key() / mbedtls_pk_parse_keyfile() (when loading a
527 private key that didn't include the uncompressed public key), as well as
528 mbedtls_ecp_mul() / mbedtls_ecp_mul_restartable() when called with a NULL
529 f_rng argument. An attacker with access to precise enough timing and
530 memory access information (typically an untrusted operating system
531 attacking a secure enclave) could fully recover the ECC private key.
532 Found and reported by Alejandro Cabrera Aldaya and Billy Brumley.
533 * Fix issue in Lucky 13 counter-measure that could make it ineffective when
534 hardware accelerators were used (using one of the MBEDTLS_SHAxxx_ALT
535 macros). This would cause the original Lucky 13 attack to be possible in
536 those configurations, allowing an active network attacker to recover
537 plaintext after repeated timing measurements under some conditions.
538 Reported and fix suggested by Luc Perneel in #3246.
539
540Bugfix
541 * Fix the Visual Studio Release x64 build configuration for mbedtls itself.
542 Completes a previous fix in Mbed TLS 2.19 that only fixed the build for
543 the example programs. Reported in #1430 and fix contributed by irwir.
544 * Fix undefined behavior in X.509 certificate parsing if the
545 pathLenConstraint basic constraint value is equal to INT_MAX.
546 The actual effect with almost every compiler is the intended
547 behavior, so this is unlikely to be exploitable anywhere. #3192
548 * Fix issue with a detected HW accelerated record error not being exposed
549 due to shadowed variable. Contributed by Sander Visser in #3310.
550 * Avoid NULL pointer dereferencing if mbedtls_ssl_free() is called with a
551 NULL pointer argument. Contributed by Sander Visser in #3312.
552 * Fix potential linker errors on dual world platforms by inlining
553 mbedtls_gcc_group_to_psa(). This allows the pk.c module to link separately
554 from psa_crypto.c. Fixes #3300.
555 * Remove dead code in X.509 certificate parsing. Contributed by irwir in
556 #2855.
557 * Include asn1.h in error.c. Fixes #3328 reported by David Hu.
558 * Fix potential memory leaks in ecp_randomize_jac() and ecp_randomize_mxz()
559 when PRNG function fails. Contributed by Jonas Lejeune in #3318.
560 * Remove unused macros from MSVC projects. Reported in #3297 and fix
561 submitted in #3333 by irwir.
562 * Add additional bounds checks in ssl_write_client_hello() preventing
563 output buffer overflow if the configuration declared a buffer that was
564 too small.
565 * Set _POSIX_C_SOURCE to at least 200112L in C99 code. Reported in #3420 and
566 fix submitted in #3421 by Nia Alarie.
567 * Fix building library/net_sockets.c and the ssl_mail_client program on
568 NetBSD. Contributed by Nia Alarie in #3422.
569 * Fix false positive uninitialised variable reported by cpp-check.
570 Contributed by Sander Visser in #3311.
571 * Update iv and len context pointers manually when reallocating buffers
572 using the MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH feature. This caused issues
573 when receiving a connection with CID, when these fields were shifted
574 in ssl_parse_record_header().
575
576Changes
577 * Fix warnings about signedness issues in format strings. The build is now
578 clean of -Wformat-signedness warnings. Contributed by Kenneth Soerensen
579 in #3153.
580 * Fix minor performance issue in operations on Curve25519 caused by using a
581 suboptimal modular reduction in one place. Found and fix contributed by
582 Aurelien Jarno in #3209.
583 * Combine identical cases in switch statements in md.c. Contributed
584 by irwir in #3208.
585 * Simplify a bounds check in ssl_write_certificate_request(). Contributed
586 by irwir in #3150.
587 * Unify the example programs termination to call mbedtls_exit() instead of
588 using a return command. This has been done to enable customization of the
589 behavior in bare metal environments.
590 * Fix mbedtls_x509_dn_gets to escape non-ASCII characters as "?".
591 Contributed by Koh M. Nakagawa in #3326.
592 * Use FindPython3 when cmake version >= 3.15.0
593 * Abort the ClientHello writing function as soon as some extension doesn't
594 fit into the record buffer. Previously, such extensions were silently
595 dropped. As a consequence, the TLS handshake now fails when the output
596 buffer is not large enough to hold the ClientHello.
597 * The unit tests now rely on header files in tests/include/test and source
598 files in tests/src. When building with make or cmake, the files in
599 tests/src are compiled and the resulting object linked into each test
600 executable.
601 * The ECP module, enabled by `MBEDTLS_ECP_C`, now depends on
602 `MBEDTLS_CTR_DRBG_C` or `MBEDTLS_HMAC_DRBG_C` for some side-channel
603 coutermeasures. If side channels are not a concern, this dependency can
604 be avoided by enabling the new option `MBEDTLS_ECP_NO_INTERNAL_RNG`.
605 * Align MSVC error flag with GCC and Clang. Contributed by Carlos Gomes
606 Martinho. #3147
607 * Remove superfluous assignment in mbedtls_ssl_parse_certificate(). Reported
608 in #3182 and fix submitted by irwir. #3217
609 * Fix typo in XTS tests. Reported and fix submitted by Kxuan. #3319
610
Janos Follath876e0252020-04-08 17:15:18 +0100611= mbed TLS 2.22.0 branch released 2020-04-14
Andres Amaya Garcia84b4e792018-12-05 22:39:38 +0000612
613New deprecations
614 * Deprecate MBEDTLS_SSL_HW_RECORD_ACCEL that enables function hooks in the
615 SSL module for hardware acceleration of individual records.
Andrzej Kurek90c6e842020-04-03 05:25:29 -0400616 * Deprecate mbedtls_ssl_get_max_frag_len() in favour of
617 mbedtls_ssl_get_output_max_frag_len() and
618 mbedtls_ssl_get_input_max_frag_len() to be more precise about which max
619 fragment length is desired.
Andres Amaya Garcia84b4e792018-12-05 22:39:38 +0000620
Manuel Pégourié-Gonnard824655c2020-03-11 12:51:42 +0100621Security
622 * Fix issue in DTLS handling of new associations with the same parameters
623 (RFC 6347 section 4.2.8): an attacker able to send forged UDP packets to
624 the server could cause it to drop established associations with
625 legitimate clients, resulting in a Denial of Service. This could only
626 happen when MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE was enabled in config.h
627 (which it is by default).
Manuel Pégourié-Gonnarda4aa89b2020-03-25 12:41:29 +0100628 * Fix side channel in ECC code that allowed an adversary with access to
629 precise enough timing and memory access information (typically an
630 untrusted operating system attacking a secure enclave) to fully recover
631 an ECDSA private key. Found and reported by Alejandro Cabrera Aldaya,
632 Billy Brumley and Cesar Pereida Garcia. CVE-2020-10932
Gilles Peskine1c668132019-09-27 14:07:00 +0200633 * Fix a potentially remotely exploitable buffer overread in a
634 DTLS client when parsing the Hello Verify Request message.
Manuel Pégourié-Gonnard824655c2020-03-11 12:51:42 +0100635
Janos Follathee856862020-04-08 16:58:36 +0100636Features
637 * The new build option MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH automatically
638 resizes the I/O buffers before and after handshakes, reducing the memory
639 consumption during application data transfer.
640
Manuel Pégourié-Gonnard830540b2020-02-26 09:58:26 +0100641Bugfix
642 * Fix compilation failure when both MBEDTLS_SSL_PROTO_DTLS and
643 MBEDTLS_SSL_HW_RECORD_ACCEL are enabled.
irwir6527bd62019-09-21 18:51:25 +0300644 * Remove a spurious check in ssl_parse_client_psk_identity that triggered
645 a warning with some compilers. Fix contributed by irwir in #2856.
Janos Follath940bc002020-04-09 09:34:47 +0100646 * Fix a function name in a debug message. Contributed by Ercan Ozturk in
647 #3013.
Manuel Pégourié-Gonnard830540b2020-02-26 09:58:26 +0100648
Gilles Peskine2f084fe2020-03-02 21:48:03 +0100649Changes
650 * Mbed Crypto is no longer a Git submodule. The crypto part of the library
651 is back directly in the present repository.
Andrzej Kurek90c6e842020-04-03 05:25:29 -0400652 * Split mbedtls_ssl_get_max_frag_len() into
653 mbedtls_ssl_get_output_max_frag_len() and
654 mbedtls_ssl_get_input_max_frag_len() to ensure that a sufficient input
655 buffer is allocated by the server (if MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH
656 is defined), regardless of what MFL was configured for it.
Gilles Peskine2f084fe2020-03-02 21:48:03 +0100657
Janos Follath138c2ea2020-02-19 14:32:24 +0000658= mbed TLS 2.21.0 branch released 2020-02-20
Jaeden Amero62236d72020-01-24 18:20:22 +0000659
Andres Amaya Garcia09634242018-11-29 09:55:41 +0000660New deprecations
661 * Deprecate MBEDTLS_SSL_SRV_SUPPORT_SSLV2_CLIENT_HELLO that enables parsing
662 SSLv2 ClientHello messages.
Andres Amaya Garcia88c2cc72018-11-29 09:56:02 +0000663 * Deprecate MBEDTLS_SSL_PROTO_SSL3 that enables support for SSLv3.
Gilles Peskine907e95a2020-01-23 15:51:40 +0100664 * Deprecate for MBEDTLS_PKCS11_C, the wrapper around the pkcs11-helper
665 library which allows TLS authentication to use keys stored in a
666 PKCS#11 token such as a smartcard.
Andres Amaya Garcia09634242018-11-29 09:55:41 +0000667
Gilles Peskinef142d4c2020-02-11 19:05:03 +0100668Security
669 * Fix potential memory overread when performing an ECDSA signature
670 operation. The overread only happens with cryptographically low
671 probability (of the order of 2^-n where n is the bitsize of the curve)
672 unless the RNG is broken, and could result in information disclosure or
673 denial of service (application crash or extra resource consumption).
674 Found by Auke Zeilstra and Peter Schwabe, using static analysis.
Gilles Peskine25a5c092020-02-11 19:12:49 +0100675 * To avoid a side channel vulnerability when parsing an RSA private key,
676 read all the CRT parameters from the DER structure rather than
677 reconstructing them. Found by Alejandro Cabrera Aldaya and Billy Bob
678 Brumley. Reported and fix contributed by Jack Lloyd.
679 ARMmbed/mbed-crypto#352
Gilles Peskinef142d4c2020-02-11 19:05:03 +0100680
681Features
682 * The new build option MBEDTLS_SHA512_NO_SHA384 allows building SHA-512
683 support without SHA-384.
684
685API changes
686 * Change the encoding of key types and curves in the PSA API. The new
687 values are aligned with the upcoming release of the PSA Crypto API
688 specification version 1.0.0. The main change which may break some
689 existing code is that elliptic curve key types no longer encode the
690 exact curve: a psa_ecc_curve_t or psa_key_type_t value only encodes
691 a curve family and the key size determines the exact curve (for example,
692 PSA_ECC_CURVE_SECP_R1 with 256 bits is P256R1). ARMmbed/mbed-crypto#330
693
Jaeden Amero62236d72020-01-24 18:20:22 +0000694Bugfix
Gilles Peskine4073d4e2020-01-22 18:58:20 +0100695 * Fix an unchecked call to mbedtls_md() in the x509write module.
Gilles Peskine80fcace2020-01-22 19:18:35 +0100696 * Fix build failure with MBEDTLS_ZLIB_SUPPORT enabled. Reported by
697 Jack Lloyd in #2859. Fix submitted by jiblime in #2963.
Gilles Peskine393defe2020-02-11 15:31:18 +0100698 * Fix some false-positive uninitialized variable warnings in X.509. Fix
699 contributed by apple-ihack-geek in #2663.
Gilles Peskine25a5c092020-02-11 19:12:49 +0100700 * Fix a possible error code mangling in psa_mac_verify_finish() when
701 a cryptographic accelerator fails. ARMmbed/mbed-crypto#345
Janos Follathd1692ee2020-02-19 11:23:55 +0000702 * Fix a bug in mbedtls_pk_parse_key() that would cause it to accept some
703 RSA keys that would later be rejected by functions expecting private
704 keys. Found by Catena cyber using oss-fuzz (issue 20467).
705 * Fix a bug in mbedtls_pk_parse_key() that would cause it to
706 accept some RSA keys with invalid values by silently fixing those values.
Jaeden Amero62236d72020-01-24 18:20:22 +0000707
Jaeden Amerod56a2af2020-01-15 18:07:20 +0000708= mbed TLS 2.20.0 branch released 2020-01-15
irwir6c0da642019-09-26 21:07:41 +0300709
Gilles Peskine6a4c3402020-01-22 18:28:24 +0100710Default behavior changes
Gilles Peskine8c7d2c22020-01-22 19:02:09 +0100711 * The initial seeding of a CTR_DRBG instance makes a second call to the
Gilles Peskine6a4c3402020-01-22 18:28:24 +0100712 entropy function to obtain entropy for a nonce if the entropy size is less
713 than 3/2 times the key size. In case you want to disable the extra call to
Gilles Peskine8c7d2c22020-01-22 19:02:09 +0100714 grab entropy, you can call mbedtls_ctr_drbg_set_nonce_len() to force the
Gilles Peskine6a4c3402020-01-22 18:28:24 +0100715 nonce length to 0.
716
717Security
Gilles Peskine8c7d2c22020-01-22 19:02:09 +0100718 * Enforce that mbedtls_entropy_func() gathers a total of
719 MBEDTLS_ENTROPY_BLOCK_SIZE bytes or more from strong sources. In the
Gilles Peskine6a4c3402020-01-22 18:28:24 +0100720 default configuration, on a platform with a single entropy source, the
721 entropy module formerly only grabbed 32 bytes, which is good enough for
722 security if the source is genuinely strong, but less than the expected 64
723 bytes (size of the entropy accumulator).
Gilles Peskinee3b285d2020-01-27 14:01:42 +0100724 * Zeroize local variables in mbedtls_internal_aes_encrypt() and
725 mbedtls_internal_aes_decrypt() before exiting the function. The value of
726 these variables can be used to recover the last round key. To follow best
727 practice and to limit the impact of buffer overread vulnerabilities (like
728 Heartbleed) we need to zeroize them before exiting the function.
729 Issue reported by Tuba Yavuz, Farhaan Fowze, Ken (Yihang) Bai,
730 Grant Hernandez, and Kevin Butler (University of Florida) and
731 Dave Tian (Purdue University).
732 * Fix side channel vulnerability in ECDSA. Our bignum implementation is not
733 constant time/constant trace, so side channel attacks can retrieve the
734 blinded value, factor it (as it is smaller than RSA keys and not guaranteed
735 to have only large prime factors), and then, by brute force, recover the
736 key. Reported by Alejandro Cabrera Aldaya and Billy Brumley.
737 * Fix side channel vulnerability in ECDSA key generation. Obtaining precise
738 timings on the comparison in the key generation enabled the attacker to
739 learn leading bits of the ephemeral key used during ECDSA signatures and to
740 recover the private key. Reported by Jeremy Dubeuf.
741 * Catch failure of AES functions in mbedtls_ctr_drbg_random(). Uncaught
742 failures could happen with alternative implementations of AES. Bug
743 reported and fix proposed by Johan Uppman Bruce and Christoffer Lauri,
744 Sectra.
Gilles Peskine6a4c3402020-01-22 18:28:24 +0100745
746Features
747 * Key derivation inputs in the PSA API can now either come from a key object
748 or from a buffer regardless of the step type.
749 * The CTR_DRBG module can grab a nonce from the entropy source during the
750 initial seeding. The default nonce length is chosen based on the key size
751 to achieve the security strength defined by NIST SP 800-90A. You can
Gilles Peskine8c7d2c22020-01-22 19:02:09 +0100752 change it with mbedtls_ctr_drbg_set_nonce_len().
Gilles Peskine6a4c3402020-01-22 18:28:24 +0100753 * Add ENUMERATED tag support to the ASN.1 module. Contributed by
Gilles Peskine50f57702020-01-22 19:02:59 +0100754 msopiha-linaro in ARMmbed/mbed-crypto#307.
Gilles Peskine6a4c3402020-01-22 18:28:24 +0100755
756API changes
757 * In the PSA API, forbid zero-length keys. To pass a zero-length input to a
758 key derivation function, use a buffer instead (this is now always
759 possible).
Gilles Peskine8c7d2c22020-01-22 19:02:09 +0100760 * Rename psa_asymmetric_sign() to psa_sign_hash() and
761 psa_asymmetric_verify() to psa_verify_hash().
Gilles Peskine6a4c3402020-01-22 18:28:24 +0100762
irwir6c0da642019-09-26 21:07:41 +0300763Bugfix
764 * Fix an incorrect size in a debugging message. Reported and fix
765 submitted by irwir. Fixes #2717.
766 * Fix an unused variable warning when compiling without DTLS.
767 Reported and fix submitted by irwir. Fixes #2800.
768 * Remove a useless assignment. Reported and fix submitted by irwir.
769 Fixes #2801.
Gilles Peskine6a4c3402020-01-22 18:28:24 +0100770 * Fix a buffer overflow in the PSA HMAC code when using a long key with an
Gilles Peskine50f57702020-01-22 19:02:59 +0100771 unsupported algorithm. Fixes ARMmbed/mbed-crypto#254.
Gilles Peskine8c7d2c22020-01-22 19:02:09 +0100772 * Fix mbedtls_asn1_get_int to support any number of leading zeros. Credit
Gilles Peskine6a4c3402020-01-22 18:28:24 +0100773 to OSS-Fuzz for finding a bug in an intermediate version of the fix.
Gilles Peskine8c7d2c22020-01-22 19:02:09 +0100774 * Fix mbedtls_asn1_get_bitstring_null to correctly parse bitstrings of at
Gilles Peskine6a4c3402020-01-22 18:28:24 +0100775 most 2 bytes.
Gilles Peskine8c7d2c22020-01-22 19:02:09 +0100776 * mbedtls_ctr_drbg_set_entropy_len() and
777 mbedtls_hmac_drbg_set_entropy_len() now work if you call them before
778 mbedtls_ctr_drbg_seed() or mbedtls_hmac_drbg_seed().
Gilles Peskine6a4c3402020-01-22 18:28:24 +0100779
780Changes
Gilles Peskine8c7d2c22020-01-22 19:02:09 +0100781 * Remove the technical possibility to define custom mbedtls_md_info
Gilles Peskine6a4c3402020-01-22 18:28:24 +0100782 structures, which was exposed only in an internal header.
Gilles Peskine8c7d2c22020-01-22 19:02:09 +0100783 * psa_close_key(0) and psa_destroy_key(0) now succeed (doing nothing, as
Gilles Peskine6a4c3402020-01-22 18:28:24 +0100784 before).
785 * Variables containing error codes are now initialized to an error code
786 rather than success, so that coding mistakes or memory corruption tends to
787 cause functions to return this error code rather than a success. There are
788 no known instances where this changes the behavior of the library: this is
Gilles Peskine50f57702020-01-22 19:02:59 +0100789 merely a robustness improvement. ARMmbed/mbed-crypto#323
Gilles Peskine8c7d2c22020-01-22 19:02:09 +0100790 * Remove a useless call to mbedtls_ecp_group_free(). Contributed by
Gilles Peskine50f57702020-01-22 19:02:59 +0100791 Alexander Krizhanovsky in ARMmbed/mbed-crypto#210.
Gilles Peskine6a4c3402020-01-22 18:28:24 +0100792 * Speed up PBKDF2 by caching the digest calculation. Contributed by Jack
Gilles Peskine50f57702020-01-22 19:02:59 +0100793 Lloyd and Fortanix Inc in ARMmbed/mbed-crypto#277.
Gilles Peskine8c7d2c22020-01-22 19:02:09 +0100794 * Small performance improvement of mbedtls_mpi_div_mpi(). Contributed by
Gilles Peskine50f57702020-01-22 19:02:59 +0100795 Alexander Krizhanovsky in ARMmbed/mbed-crypto#308.
irwir6c0da642019-09-26 21:07:41 +0300796
Jaeden Amero914a5072019-09-18 13:35:57 +0100797= mbed TLS 2.19.1 branch released 2019-09-16
798
799Features
Zachary J. Fields96134ef2020-01-27 16:12:02 -0600800 * Declare include headers as PUBLIC to propagate to CMake project consumers
801 Contributed by Zachary J. Fields in PR #2949.
Jaeden Amero914a5072019-09-18 13:35:57 +0100802 * Add nss_keylog to ssl_client2 and ssl_server2, enabling easier analysis of
803 TLS sessions with tools like Wireshark.
804
805API Changes
806 * Make client_random and server_random const in
807 mbedtls_ssl_export_keys_ext_t, so that the key exporter is discouraged
808 from modifying the client/server hello.
809
Gilles Peskine3ca1bcc2019-09-30 17:20:23 +0200810Bugfix
Gilles Peskine393defe2020-02-11 15:31:18 +0100811 * Fix some false-positive uninitialized variable warnings in crypto. Fix
Gilles Peskine3ca1bcc2019-09-30 17:20:23 +0200812 contributed by apple-ihack-geek in #2663.
813
Jaeden Amero4197f0e2019-09-06 14:40:10 +0100814= mbed TLS 2.19.0 branch released 2019-09-06
Jaeden Amerod5d01a02019-03-26 14:50:06 +0000815
Gilles Peskine52157832018-08-11 00:51:04 +0200816Security
Jaeden Amero4197f0e2019-09-06 14:40:10 +0100817 * Fix a missing error detection in ECJPAKE. This could have caused a
818 predictable shared secret if a hardware accelerator failed and the other
819 side of the key exchange had a similar bug.
Gilles Peskine52157832018-08-11 00:51:04 +0200820 * When writing a private EC key, use a constant size for the private
821 value, as specified in RFC 5915. Previously, the value was written
822 as an ASN.1 INTEGER, which caused the size of the key to leak
823 about 1 bit of information on average and could cause the value to be
824 1 byte too large for the output buffer.
Janos Follath12fff152019-01-04 16:18:46 +0000825 * The deterministic ECDSA calculation reused the scheme's HMAC-DRBG to
826 implement blinding. Because of this for the same key and message the same
827 blinding value was generated. This reduced the effectiveness of the
828 countermeasure and leaked information about the private key through side
829 channels. Reported by Jack Lloyd.
Gilles Peskine52157832018-08-11 00:51:04 +0200830
Jaeden Ameroc73fde72019-03-27 14:50:21 +0000831Features
Manuel Pégourié-Gonnard64722632019-05-24 10:23:55 +0200832 * Add new API functions mbedtls_ssl_session_save() and
Manuel Pégourié-Gonnard686adb42019-06-03 09:55:16 +0200833 mbedtls_ssl_session_load() to allow serializing a session, for example to
Manuel Pégourié-Gonnard64722632019-05-24 10:23:55 +0200834 store it in non-volatile storage, and later using it for TLS session
835 resumption.
Jarno Lamsa9e90df52019-08-23 09:08:31 +0300836 * Add a new API function mbedtls_ssl_check_record() to allow checking that
837 an incoming record is valid, authentic and has not been seen before. This
838 feature can be used alongside Connection ID and SSL context serialisation.
839 The feature is enabled at compile-time by MBEDTLS_SSL_RECORD_CHECKING
840 option.
Jaeden Amero49fcbea2019-08-30 15:50:45 +0100841 * New implementation of X25519 (ECDH using Curve25519) from Project Everest
842 (https://project-everest.github.io/). It can be enabled at compile time
843 with MBEDTLS_ECDH_VARIANT_EVEREST_ENABLED. This implementation is formally
844 verified and significantly faster, but is only supported on x86 platforms
845 (32-bit and 64-bit) using GCC, Clang or Visual Studio. Contributed by
846 Christoph Wintersteiger from Microsoft Research.
Jaeden Amero8dd6bc72019-09-03 16:41:51 +0100847 * Add mbedtls_net_close(), enabling the building of forking servers where
848 the parent process closes the client socket and continue accepting, and
849 the child process closes the listening socket and handles the client
850 socket. Contributed by Robert Larsen in #2803.
Jaeden Ameroc73fde72019-03-27 14:50:21 +0000851
Gilles Peskine60b29d62019-08-14 18:37:59 +0200852API Changes
Gilles Peskine60b29d62019-08-14 18:37:59 +0200853 * Add DER-encoded test CRTs to library/certs.c, allowing
854 the example programs ssl_server2 and ssl_client2 to be run
855 if MBEDTLS_FS_IO and MBEDTLS_PEM_PARSE_C are unset. Fixes #2254.
856 * The HAVEGE state type now uses uint32_t elements instead of int.
Jaeden Amero49fcbea2019-08-30 15:50:45 +0100857 * The functions mbedtls_ecp_curve_list() and mbedtls_ecp_grp_id_list() now
858 list all curves for which at least one of ECDH or ECDSA is supported, not
859 just curves for which both are supported. Call mbedtls_ecdsa_can_do() or
860 mbedtls_ecdh_can_do() on each result to check whether each algorithm is
861 supported.
Jaeden Amero4197f0e2019-09-06 14:40:10 +0100862 * The new function mbedtls_ecdsa_sign_det_ext() is similar to
863 mbedtls_ecdsa_sign_det() but allows passing an external RNG for the
864 purpose of blinding.
Janos Follath12fff152019-01-04 16:18:46 +0000865
866New deprecations
867 * Deprecate mbedtls_ecdsa_sign_det() in favor of a functions that can take an
868 RNG function as an input.
869 * Calling mbedtls_ecdsa_write_signature() with NULL as the f_rng argument
870 is now deprecated.
Gilles Peskine60b29d62019-08-14 18:37:59 +0200871
Jaeden Amerod5d01a02019-03-26 14:50:06 +0000872Bugfix
Hanno Becker3c03a882019-06-04 10:27:43 +0100873 * Fix missing bounds checks in X.509 parsing functions that could
874 lead to successful parsing of ill-formed X.509 CRTs. Fixes #2437.
875 * Fix multiple X.509 functions previously returning ASN.1 low-level error
876 codes to always wrap these codes into X.509 high level error codes before
877 returning. Fixes #2431.
Simon Butcherf35bb5a2019-04-18 15:57:30 +0100878 * Fix to allow building test suites with any warning that detects unused
879 functions. Fixes #1628.
Jaeden Ameroa152e422019-05-29 09:38:29 +0100880 * Fix typo in net_would_block(). Fixes #528 reported by github-monoculture.
Jaeden Ameroa1809262019-05-30 13:15:33 +0100881 * Remove redundant include file in timing.c. Fixes #2640 reported by irwir.
Jaeden Amero32eb58f2019-05-30 13:18:24 +0100882 * Fix build failure when building with mingw on Windows by including
883 stdarg.h where needed. Fixes #2656.
Jaeden Amero4f4af6e2019-06-03 08:13:10 +0100884 * Fix Visual Studio Release x64 build configuration by inheriting
885 PlatformToolset from the project configuration. Fixes #1430 reported by
886 irwir.
Jaeden Amerod4311042019-06-03 08:27:16 +0100887 * Enable Suite B with subset of ECP curves. Make sure the code compiles even
888 if some curves are not defined. Fixes #1591 reported by dbedev.
Gilles Peskinef3820e32019-06-07 16:42:35 +0200889 * Fix misuse of signed arithmetic in the HAVEGE module. #2598
Hanno Becker73540c02019-05-04 08:18:09 +0100890 * Avoid use of statically sized stack buffers for certificate writing.
891 This previously limited the maximum size of DER encoded certificates
892 in mbedtls_x509write_crt_der() to 2Kb. Reported by soccerGB in #2631.
Sébastien Duquette661d7252019-06-23 17:45:26 -0400893 * Fix partial zeroing in x509_get_other_name. Found and fixed by ekse, #2716.
Gilles Peskine55603ee2019-08-03 14:08:46 +0200894 * Update test certificates that were about to expire. Reported by
895 Bernhard M. Wiedemann in #2357.
Gilles Peskinea5cb7d42019-08-05 11:34:11 +0200896 * Fix the build on ARMv5TE in ARM mode to not use assembly instructions
897 that are only available in Thumb mode. Fix contributed by Aurelien Jarno
898 in #2169.
Hanno Beckerbf84d502019-07-19 12:52:08 +0100899 * Fix propagation of restart contexts in restartable EC operations.
900 This could previously lead to segmentation faults in builds using an
901 address-sanitizer and enabling but not using MBEDTLS_ECP_RESTARTABLE.
Jaeden Ameroa66fc942019-09-03 13:45:34 +0100902 * Fix memory leak in in mpi_miller_rabin(). Contributed by
903 Jens Wiklander <jens.wiklander@linaro.org> in #2363
Andy Gross1f627142019-01-30 10:25:53 -0600904 * Improve code clarity in x509_crt module, removing false-positive
905 uninitialized variable warnings on some recent toolchains (GCC8, etc).
906 Discovered and fixed by Andy Gross (Linaro), #2392.
Jaeden Ameroaeb5a4a2019-09-05 14:43:14 +0100907 * Fix bug in endianness conversion in bignum module. This lead to
908 functionally incorrect code on bigendian systems which don't have
909 __BYTE_ORDER__ defined. Reported by Brendan Shanks. Fixes #2622.
Jaeden Amero4e0db562019-08-27 11:18:28 +0100910
Jaeden Amerod5d01a02019-03-26 14:50:06 +0000911Changes
Hanno Becker136512b2019-05-30 11:16:02 +0100912 * Replace multiple uses of MD2 by SHA-256 in X.509 test suite. Fixes #821.
Gilles Peskinec7ad1222019-06-13 16:44:19 +0200913 * Make it easier to define MBEDTLS_PARAM_FAILED as assert (which config.h
914 suggests). #2671
Jaeden Amerobefe1e152019-06-03 09:14:14 +0100915 * Make `make clean` clean all programs always. Fixes #1862.
Peter Kolbuse4e2d3a2018-12-24 09:04:54 -0600916 * Add a Dockerfile and helper scripts (all-in-docker.sh, basic-in-docker.sh,
917 docker-env.sh) to simplify running test suites on a Linux host. Contributed
918 by Peter Kolbus (Garmin).
Jaeden Amerof473fa82019-07-09 13:41:54 +0100919 * Add `reproducible` option to `ssl_client2` and `ssl_server2` to enable
920 test runs without variability. Contributed by Philippe Antoine (Catena
921 cyber) in #2681.
922 * Extended .gitignore to ignore Visual Studio artifacts. Fixed by ConfusedSushi.
Philippe Antoine801194b2019-06-04 14:17:41 +0200923 * Adds fuzz targets, especially for continuous fuzzing with OSS-Fuzz.
924 Contributed by Philippe Antoine (Catena cyber).
Gilles Peskine2f084fe2020-03-02 21:48:03 +0100925 * Remove the crypto part of the library from Mbed TLS. The crypto
926 code and tests are now only available via Mbed Crypto, which
927 Mbed TLS references as a Git submodule.
Jaeden Amerod5d01a02019-03-26 14:50:06 +0000928
Jaeden Amero3aeb13e2019-06-18 17:27:20 +0100929= mbed TLS 2.18.1 branch released 2019-07-12
930
Jaeden Ameroded319d2019-05-30 13:18:24 +0100931Bugfix
932 * Fix build failure when building with mingw on Windows by including
933 stdarg.h where needed. Fixes #2656.
934
Jaeden Amero3aeb13e2019-06-18 17:27:20 +0100935Changes
936 * Enable building of Mbed TLS as a CMake subproject. Suggested and fixed by
937 Ashley Duncan in #2609.
938
Jaeden Amerob1c72f52019-06-11 17:18:09 +0100939= mbed TLS 2.18.0 branch released 2019-06-11
Andrzej Kurekc470b6b2019-01-31 08:20:20 -0500940
Hanno Beckerac4172c2019-01-31 09:27:04 +0000941Features
942 * Add the Any Policy certificate policy oid, as defined in
943 rfc 5280 section 4.2.1.4.
944 * It is now possible to use NIST key wrap mode via the mbedtls_cipher API.
945 Contributed by Jack Lloyd and Fortanix Inc.
Andres Amaya Garciace049512019-02-20 10:00:03 +0000946 * Add the Wi-SUN Field Area Network (FAN) device extended key usage.
947 * Add the oid certificate policy x509 extension.
Andres Amaya Garcia4a512282018-10-30 18:21:41 +0000948 * It is now possible to perform RSA PKCS v1.5 signatures with RIPEMD-160 digest.
Andres Amaya Garcia22a89052018-11-26 20:57:49 +0000949 Contributed by Jack Lloyd and Fortanix Inc.
950 * Extend the MBEDTLS_SSL_EXPORT_KEYS to export the handshake randbytes,
Hanno Beckerac4172c2019-01-31 09:27:04 +0000951 and the used tls-prf.
952 * Add public API for tls-prf function, according to requested enum.
953 * Add support for parsing otherName entries in the Subject Alternative Name
954 X.509 certificate extension, specifically type hardware module name,
Hanno Beckere31505d2019-02-07 13:42:45 +0000955 as defined in RFC 4108 section 5.
956 * Add support for parsing certificate policies extension, as defined in
957 RFC 5280 section 4.2.1.4. Currently, only the "Any Policy" policy is
958 supported.
959 * List all SAN types in the subject_alt_names field of the certificate.
960 Resolves #459.
961 * Add support for draft-05 of the Connection ID extension, as specified
Paul Bakker5121ce52009-01-03 21:22:43 +0000962 in https://tools.ietf.org/html/draft-ietf-tls-dtls-connection-id-05.
963 The Connection ID extension allows to keep DTLS connections beyond the
Paul Bakker99ed6782011-01-05 14:48:42 +0000964 lifetime of the underlying transport by adding a connection identifier
965 to the DTLS record header. This identifier can be used to associated an
Andrzej Kurekc470b6b2019-01-31 08:20:20 -0500966 incoming record with the correct connection data even after the peer has
967 changed its IP or port. The feature is enabled at compile-time by setting
Hanno Beckerac4172c2019-01-31 09:27:04 +0000968 MBEDTLS_SSL_DTLS_CONNECTION_ID (disabled by default), and at run-time
969 through the new APIs mbedtls_ssl_conf_cid() and mbedtls_ssl_set_cid().
970
Paul Bakker5121ce52009-01-03 21:22:43 +0000971
Jaeden Amero4e0db562019-08-27 11:18:28 +0100972API Changes
973 * Extend the MBEDTLS_SSL_EXPORT_KEYS to export the handshake randbytes,
974 and the used tls-prf.
975 * Add public API for tls-prf function, according to requested enum.
976
Paul Bakker5121ce52009-01-03 21:22:43 +0000977Bugfix
978 * Fix private key DER output in the key_app_writer example. File contents
979 were shifted by one byte, creating an invalid ASN.1 tag. Fixed by
980 Christian Walther in #2239.
981 * Fix potential memory leak in X.509 self test. Found and fixed by
982 Junhwan Park, #2106.
983 * Reduce stack usage of hkdf tests. Fixes #2195.
984 * Fix 1-byte buffer overflow in mbedtls_mpi_write_string() when
985 used with negative inputs. Found by Guido Vranken in #2404. Credit to
986 OSS-Fuzz.
987 * Fix bugs in the AEAD test suite which would be exposed by ciphers which
988 either used both encrypt and decrypt key schedules, or which perform padding.
989 GCM and CCM were not affected. Fixed by Jack Lloyd.
990 * Fix incorrect default port number in ssl_mail_client example's usage.
991 Found and fixed by irwir. #2337
992 * Add psa_util.h to test/cpp_dummy_build to fix build_default_make_gcc_and_cxx.
993 Fixed by Peter Kolbus (Garmin). #2579
994 * Add missing parentheses around parameters in the definition of the
Paul Bakker99ed6782011-01-05 14:48:42 +0000995 public macro MBEDTLS_X509_ID_FLAG. This could lead to invalid evaluation
996 in case operators binding less strongly than subtraction were used
Andrzej Kurekc470b6b2019-01-31 08:20:20 -0500997 for the parameter.
998 * Add a check for MBEDTLS_X509_CRL_PARSE_C in ssl_server2, guarding the crl
Hanno Beckerac4172c2019-01-31 09:27:04 +0000999 sni entry parameter. Reported by inestlerode in #560.
1000 * Set the next sequence of the subject_alt_name to NULL when deleting
1001 sequence on failure. Found and fix suggested by Philippe Antoine.
1002 Credit to OSS-Fuzz.
1003
Paul Bakker5121ce52009-01-03 21:22:43 +00001004Changes
1005 * Server's RSA certificate in certs.c was SHA-1 signed. In the default
1006 mbedTLS configuration only SHA-2 signed certificates are accepted.
1007 This certificate is used in the demo server programs, which lead the
1008 client programs to fail at the peer's certificate verification
1009 due to an unacceptable hash signature. The certificate has been
1010 updated to one that is SHA-256 signed. Fix contributed by
1011 Illya Gerasymchuk.
1012 * Return from various debugging routines immediately if the
1013 provided SSL context is unset.
1014 * Remove dead code from bignum.c in the default configuration.
1015 Found by Coverity, reported and fixed by Peter Kolbus (Garmin). Fixes #2309.
1016 * Add test for minimal value of MBEDTLS_MPI_WINDOW_SIZE to all.sh.
1017 Contributed by Peter Kolbus (Garmin).
1018 * Change wording in the `mbedtls_ssl_conf_max_frag_len()`'s documentation to
1019 improve clarity. Fixes #2258.
1020
1021= mbed TLS 2.17.0 branch released 2019-03-19
Paul Bakker99ed6782011-01-05 14:48:42 +00001022
1023Features
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05001024 * Add a new X.509 API call `mbedtls_x509_parse_der_nocopy()`
1025 which allows copy-less parsing of DER encoded X.509 CRTs,
Hanno Beckerac4172c2019-01-31 09:27:04 +00001026 at the cost of additional lifetime constraints on the input
1027 buffer, but at the benefit of reduced RAM consumption.
1028 * Add a new function mbedtls_asn1_write_named_bitstring() to write ASN.1
1029 named bitstring in DER as required by RFC 5280 Appendix B.
1030 * Add MBEDTLS_REMOVE_3DES_CIPHERSUITES to allow removing 3DES ciphersuites
1031 from the default list (enabled by default). See
1032 https://sweet32.info/SWEET32_CCS16.pdf.
1033
1034API Changes
1035 * Add a new X.509 API call `mbedtls_x509_parse_der_nocopy()`.
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05001036 See the Features section for more information.
1037 * Allow to opt in to the removal the API mbedtls_ssl_get_peer_cert()
1038 for the benefit of saving RAM, by disabling the new compile-time
1039 option MBEDTLS_SSL_KEEP_PEER_CERTIFICATE (enabled by default for
1040 API stability). Disabling this option makes mbedtls_ssl_get_peer_cert()
1041 always return NULL, and removes the peer_cert field from the
1042 mbedtls_ssl_session structure which otherwise stores the peer's
Gilles Peskineccf8ba02018-11-07 22:39:16 +01001043 certificate.
1044
1045Security
1046 * Make mbedtls_ecdh_get_params return an error if the second key
1047 belongs to a different group from the first. Before, if an application
1048 passed keys that belonged to different group, the first key's data was
1049 interpreted according to the second group, which could lead to either
1050 an error or a meaningless output from mbedtls_ecdh_get_params. In the
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05001051 latter case, this could expose at most 5 bits of the private key.
1052
1053Bugfix
1054 * Fix a compilation issue with mbedtls_ecp_restart_ctx not being defined
1055 when MBEDTLS_ECP_ALT is defined. Reported by jwhui. Fixes #2242.
1056 * Run the AD too long test only if MBEDTLS_CCM_ALT is not defined.
1057 Raised as a comment in #1996.
1058 * Reduce the stack consumption of mbedtls_mpi_fill_random() which could
1059 previously lead to a stack overflow on constrained targets.
1060 * Add `MBEDTLS_SELF_TEST` for the mbedtls_self_test functions
1061 in the header files, which missed the precompilation check. #971
1062 * Fix returning the value 1 when mbedtls_ecdsa_genkey failed.
1063 * Remove a duplicate #include in a sample program. Fixed by Masashi Honma #2326.
Hanno Becker1b6d2b22019-01-10 09:22:16 +00001064 * Remove the mbedtls namespacing from the header file, to fix a "file not found"
1065 build error. Fixed by Haijun Gu #2319.
Ron Eldor8a6917d2018-11-27 10:33:38 +02001066 * Fix signed-to-unsigned integer conversion warning
1067 in X.509 module. Fixes #2212.
Peter Kolbus995d5c12019-02-03 08:41:41 -06001068 * Reduce stack usage of `mpi_write_hlp()` by eliminating recursion.
1069 Fixes #2190.
Andres Amaya Garciad588ff72018-09-26 10:59:20 +01001070 * Fix false failure in all.sh when backup files exist in include/mbedtls
1071 (e.g. config.h.bak). Fixed by Peter Kolbus (Garmin) #2407.
1072 * Ensure that unused bits are zero when writing ASN.1 bitstrings when using
1073 mbedtls_asn1_write_bitstring().
1074 * Fix issue when writing the named bitstrings in KeyUsage and NsCertType
1075 extensions in CSRs and CRTs that caused these bitstrings to not be encoded
Simon Butcher41f95192018-12-01 18:42:47 +00001076 correctly as trailing zeroes were not accounted for as unused bits in the
1077 leading content octet. Fixes #1610.
Hanno Beckerbd9d51d2019-01-30 15:14:21 +00001078
1079Changes
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05001080 * Reduce RAM consumption during session renegotiation by not storing
1081 the peer CRT chain and session ticket twice.
1082 * Include configuration file in all header files that use configuration,
1083 instead of relying on other header files that they include.
1084 Inserted as an enhancement for #1371
Andrzej Kurek8764ccc2019-02-05 04:57:13 -05001085 * Add support for alternative CSR headers, as used by Microsoft and defined
1086 in RFC 7468. Found by Michael Ernst. Fixes #767.
1087 * Correct many misspellings. Fixed by MisterDA #2371.
1088 * Provide an abstraction of vsnprintf to allow alternative implementations
1089 for platforms that don't provide it. Based on contributions by Joris Aerts
1090 and Nathaniel Wesley Filardo.
1091 * Fix clobber list in MIPS assembly for large integer multiplication.
1092 Previously, this could lead to functionally incorrect assembly being
1093 produced by some optimizing compilers, showing up as failures in
k-stachowiakc5a4a132019-02-05 09:11:58 +01001094 e.g. RSA or ECC signature operations. Reported in #1722, fix suggested
1095 by Aurelien Jarno and submitted by Jeffrey Martin.
Andres Amaya Garciaaabe52f2018-10-16 22:18:53 +01001096 * Reduce the complexity of the timing tests. They were assuming more than the
1097 underlying OS actually guarantees.
k-stachowiakcddbd012019-02-19 12:40:34 +01001098 * Fix configuration queries in ssl-opt.h. #2030
1099 * Ensure that ssl-opt.h can be run in OS X. #2029
Andres Amaya Garciaf8dffb32019-02-19 20:14:00 +00001100 * Re-enable certain interoperability tests in ssl-opt.sh which had previously
1101 been disabled for lack of a sufficiently recent version of GnuTLS on the CI.
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05001102 * Ciphersuites based on 3DES now have the lowest priority by default when
1103 they are enabled.
1104
1105= mbed TLS 2.16.0 branch released 2018-12-21
1106
1107Features
1108 * Add a new config.h option of MBEDTLS_CHECK_PARAMS that enables validation
1109 of parameters in the API. This allows detection of obvious misuses of the
1110 API, such as passing NULL pointers. The API of existing functions hasn't
1111 changed, but requirements on parameters have been made more explicit in
1112 the documentation. See the corresponding API documentation for each
1113 function to see for which parameter values it is defined. This feature is
1114 disabled by default. See its API documentation in config.h for additional
1115 steps you have to take when enabling it.
1116
1117API Changes
1118 * The following functions in the random generator modules have been
1119 deprecated and replaced as shown below. The new functions change
1120 the return type from void to int to allow returning error codes when
1121 using MBEDTLS_<MODULE>_ALT for the underlying AES or message digest
1122 primitive. Fixes #1798.
1123 mbedtls_ctr_drbg_update() -> mbedtls_ctr_drbg_update_ret()
1124 mbedtls_hmac_drbg_update() -> mbedtls_hmac_drbg_update_ret()
1125 * Extend ECDH interface to enable alternative implementations.
1126 * Deprecate error codes of the form MBEDTLS_ERR_xxx_INVALID_KEY_LENGTH for
1127 ARIA, CAMELLIA and Blowfish. These error codes will be replaced by
1128 the more generic per-module error codes MBEDTLS_ERR_xxx_BAD_INPUT_DATA.
1129 * Additional parameter validation checks have been added for the following
1130 modules - AES, ARIA, Blowfish, CAMELLIA, CCM, GCM, DHM, ECP, ECDSA, ECDH,
1131 ECJPAKE, SHA, Chacha20 and Poly1305, cipher, pk, RSA, and MPI.
1132 Where modules have had parameter validation added, existing parameter
1133 checks may have changed. Some modules, such as Chacha20 had existing
1134 parameter validation whereas other modules had little. This has now been
1135 changed so that the same level of validation is present in all modules, and
1136 that it is now optional with the MBEDTLS_CHECK_PARAMS flag which by default
1137 is off. That means that checks which were previously present by default
1138 will no longer be.
1139
1140New deprecations
1141 * Deprecate mbedtls_ctr_drbg_update and mbedtls_hmac_drbg_update
1142 in favor of functions that can return an error code.
1143
1144Bugfix
1145 * Fix for Clang, which was reporting a warning for the bignum.c inline
1146 assembly for AMD64 targets creating string literals greater than those
1147 permitted by the ISO C99 standard. Found by Aaron Jones. Fixes #482.
1148 * Fix runtime error in `mbedtls_platform_entropy_poll()` when run
1149 through qemu user emulation. Reported and fix suggested by randombit
1150 in #1212. Fixes #1212.
1151 * Fix an unsafe bounds check when restoring an SSL session from a ticket.
1152 This could lead to a buffer overflow, but only in case ticket authentication
1153 was broken. Reported and fix suggested by Guido Vranken in #659.
1154 * Add explicit integer to enumeration type casts to example program
1155 programs/pkey/gen_key which previously led to compilation failure
1156 on some toolchains. Reported by phoenixmcallister. Fixes #2170.
1157 * Fix double initialization of ECC hardware that made some accelerators
1158 hang.
1159 * Clarify documentation of mbedtls_ssl_set_own_cert() regarding the absence
Andrzej Kurek8764ccc2019-02-05 04:57:13 -05001160 of check for certificate/key matching. Reported by Attila Molnar, #507.
1161
1162 = mbed TLS 2.15.1 branch released 2018-11-30
1163
1164 Changes
1165 * Update the Mbed Crypto submodule to version 0.1.0b2.
1166
1167 = mbed TLS 2.15.0 branch released 2018-11-23
1168
1169 Features
1170 * Add an experimental build option, USE_CRYPTO_SUBMODULE, to enable use of
1171 Mbed Crypto as the source of the cryptography implementation.
1172 * Add an experimental configuration option, MBEDTLS_PSA_CRYPTO_C, to enable
1173 the PSA Crypto API from Mbed Crypto when additionally used with the
1174 USE_CRYPTO_SUBMODULE build option.
1175
1176 Changes
1177 * Add unit tests for AES-GCM when called through mbedtls_cipher_auth_xxx()
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05001178 from the cipher abstraction layer. Fixes #2198.
1179
1180= mbed TLS 2.14.1 branch released 2018-11-30
1181
1182Security
1183 * Fix timing variations and memory access variations in RSA PKCS#1 v1.5
1184 decryption that could lead to a Bleichenbacher-style padding oracle
1185 attack. In TLS, this affects servers that accept ciphersuites based on
1186 RSA decryption (i.e. ciphersuites whose name contains RSA but not
1187 (EC)DH(E)). Discovered by Eyal Ronen (Weizmann Institute), Robert Gillham
1188 (University of Adelaide), Daniel Genkin (University of Michigan),
1189 Adi Shamir (Weizmann Institute), David Wong (NCC Group), and Yuval Yarom
1190 (University of Adelaide, Data61). The attack is described in more detail
1191 in the paper available here: http://cat.eyalro.net/cat.pdf CVE-2018-19608
1192 * In mbedtls_mpi_write_binary(), don't leak the exact size of the number
1193 via branching and memory access patterns. An attacker who could submit
1194 a plaintext for RSA PKCS#1 v1.5 decryption but only observe the timing
1195 of the decryption and not its result could nonetheless decrypt RSA
1196 plaintexts and forge RSA signatures. Other asymmetric algorithms may
1197 have been similarly vulnerable. Reported by Eyal Ronen, Robert Gillham,
1198 Daniel Genkin, Adi Shamir, David Wong and Yuval Yarom.
1199 * Wipe sensitive buffers on the stack in the CTR_DRBG and HMAC_DRBG
1200 modules.
1201
1202API Changes
1203 * The new functions mbedtls_ctr_drbg_update_ret() and
1204 mbedtls_hmac_drbg_update_ret() are similar to mbedtls_ctr_drbg_update()
1205 and mbedtls_hmac_drbg_update() respectively, but the new functions
Andrzej Kurekc470b6b2019-01-31 08:20:20 -05001206 report errors whereas the old functions return void. We recommend that
Simon Butcherc1b98922018-11-19 18:31:40 +00001207 applications use the new functions.
Manuel Pégourié-Gonnard171a4812017-05-15 17:23:37 +02001208
Hanno Beckerd3445da2018-11-02 09:36:45 +00001209= mbed TLS 2.14.0 branch released 2018-11-19
Simon Butcher681edee2018-11-07 16:25:38 +00001210
Simon Butcherb35e59d2018-11-19 15:49:26 +00001211Security
Simon Butcher681edee2018-11-07 16:25:38 +00001212 * Fix overly strict DN comparison when looking for CRLs belonging to a
1213 particular CA. This previously led to ignoring CRLs when the CRL's issuer
1214 name and the CA's subject name differed in their string encoding (e.g.,
1215 one using PrintableString and the other UTF8String) or in the choice of
Hanno Beckerdc71ef82018-10-08 13:51:38 +01001216 upper and lower case. Reported by Henrik Andersson of Bosch GmbH in issue
Simon Butcherb35e59d2018-11-19 15:49:26 +00001217 #1784.
Hanno Beckerdc71ef82018-10-08 13:51:38 +01001218 * Fix a flawed bounds check in server PSK hint parsing. In case the
Simon Butcherb35e59d2018-11-19 15:49:26 +00001219 incoming message buffer was placed within the first 64KiB of address
1220 space and a PSK-(EC)DHE ciphersuite was used, this allowed an attacker
Janos Follathe0e7ddf2018-09-06 10:40:04 +01001221 to trigger a memory access up to 64KiB beyond the incoming message buffer,
1222 potentially leading to an application crash or information disclosure.
1223 * Fix mbedtls_mpi_is_prime() to use more rounds of probabilistic testing. The
1224 previous settings for the number of rounds made it practical for an
Simon Butcher681edee2018-11-07 16:25:38 +00001225 adversary to construct non-primes that would be erroneously accepted as
1226 primes with high probability. This does not have an impact on the
Janos Follathe0e7ddf2018-09-06 10:40:04 +01001227 security of TLS, but can matter in other contexts with numbers chosen
1228 potentially by an adversary that should be prime and can be validated.
1229 For example, the number of rounds was enough to securely generate RSA key
1230 pairs or Diffie-Hellman parameters, but was insufficient to validate
1231 Diffie-Hellman parameters properly.
Hanno Beckerd3445da2018-11-02 09:36:45 +00001232 See "Prime and Prejudice" by by Martin R. Albrecht and Jake Massimo and
Manuel Pégourié-Gonnard171a4812017-05-15 17:23:37 +02001233 Kenneth G. Paterson and Juraj Somorovsky.
Manuel Pégourié-Gonnardf0bbd7e2018-10-15 13:22:41 +02001234
Simon Butcherb35e59d2018-11-19 15:49:26 +00001235Features
1236 * Add support for temporarily suspending expensive ECC computations after
1237 some configurable amount of operations. This is intended to be used in
1238 constrained, single-threaded systems where ECC is time consuming and can
1239 block other operations until they complete. This is disabled by default,
Manuel Pégourié-Gonnardf0bbd7e2018-10-15 13:22:41 +02001240 but can be enabled by MBEDTLS_ECP_RESTARTABLE at compile time and
1241 configured by mbedtls_ecp_set_max_ops() at runtime. It applies to the new
1242 xxx_restartable functions in ECP, ECDSA, PK and X.509 (CRL not supported
1243 yet), and to existing functions in ECDH and SSL (currently only
Simon Butcher4a865ef2018-10-28 18:00:51 +00001244 implemented client-side, for ECDHE-ECDSA ciphersuites in TLS 1.2,
1245 including client authentication).
1246 * Add support for Arm CPU DSP extensions to accelerate asymmetric key
1247 operations. On CPUs where the extensions are available, they can accelerate
Simon Butcherb35e59d2018-11-19 15:49:26 +00001248 MPI multiplications used in ECC and RSA cryptography. Contributed by
1249 Aurelien Jarno.
1250 * Extend RSASSA-PSS signature to allow a smaller salt size. Previously, PSS
1251 signature always used a salt with the same length as the hash, and returned
1252 an error if this was not possible. Now the salt size may be up to two bytes
Simon Butcher06d80cf2018-11-06 23:46:04 +00001253 shorter. This allows the library to support all hash and signature sizes
1254 that comply with FIPS 186-4, including SHA-512 with a 1024-bit key.
Manuel Pégourié-Gonnard823c9152018-07-02 12:05:49 +02001255 * Add support for 128-bit keys in CTR_DRBG. Note that using keys shorter
Simon Butchere51d4b32018-11-09 19:57:53 +00001256 than 256 bits limits the security of generated material to 128 bits.
Simon Butcher2ab14bb2018-11-09 20:09:33 +00001257
1258API Changes
1259 * Add a common error code of `MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED` for
1260 a feature that is not supported by underlying alternative
Simon Butchere51d4b32018-11-09 19:57:53 +00001261 implementations implementing cryptographic primitives. This is useful for
Ron Eldor6aa9fb42018-10-04 14:32:05 +03001262 hardware accelerators that don't implement all options or features.
Simon Butcher2ab14bb2018-11-09 20:09:33 +00001263
1264New deprecations
1265 * All module specific errors following the form
1266 MBEDTLS_ERR_XXX_FEATURE_UNAVAILABLE that indicate a feature is not
Simon Butcher681edee2018-11-07 16:25:38 +00001267 supported are deprecated and are now replaced by the new equivalent
Simon Butcher2ab14bb2018-11-09 20:09:33 +00001268 platform error.
1269 * All module specific generic hardware acceleration errors following the
Janos Follathe0e7ddf2018-09-06 10:40:04 +01001270 form MBEDTLS_ERR_XXX_HW_ACCEL_FAILED that are deprecated and are replaced
1271 by the equivalent plaform error.
1272 * Deprecate the function mbedtls_mpi_is_prime() in favor of
Ron Eldor6aa9fb42018-10-04 14:32:05 +03001273 mbedtls_mpi_is_prime_ext() which allows specifying the number of
Simon Butcherb3633822018-07-30 22:10:48 +01001274 Miller-Rabin rounds.
Simon Butcher2b5be1e2018-10-30 15:55:10 +00001275
1276Bugfix
1277 * Fix wrong order of freeing in programs/ssl/ssl_server2 example
1278 application leading to a memory leak in case both
Simon Butcherc86993e2018-09-27 09:48:54 +01001279 MBEDTLS_MEMORY_BUFFER_ALLOC_C and MBEDTLS_MEMORY_BACKTRACE are set.
1280 Fixes #2069.
Simon Butcher1afc7672018-09-27 11:35:19 +01001281 * Fix a bug in the update function for SSL ticket keys which previously
1282 invalidated keys of a lifetime of less than a 1s. Fixes #1968.
Hanno Beckerf24c3362018-10-17 14:53:05 +01001283 * Fix failure in hmac_drbg in the benchmark sample application, when
1284 MBEDTLS_THREADING_C is defined. Found by TrinityTonic, #1095
1285 * Fix a bug in the record decryption routine ssl_decrypt_buf()
Hanno Becker617a3212018-10-05 09:51:36 +01001286 which lead to accepting properly authenticated but improperly
1287 padded records in case of CBC ciphersuites using Encrypt-then-MAC.
Simon Butcher681edee2018-11-07 16:25:38 +00001288 * Fix memory leak and freeing without initialization in the example
1289 program programs/x509/cert_write. Fixes #1422.
Hanno Becker7e1f3be2018-10-15 13:20:28 +01001290 * Ignore IV in mbedtls_cipher_set_iv() when the cipher mode is
1291 MBEDTLS_MODE_ECB. Found by ezdevelop. Fixes #1091.
1292 * Zeroize memory used for buffering or reassembling handshake messages
1293 after use.
Hanno Beckerf143a782018-11-06 17:43:16 +00001294 * Use `mbedtls_platform_zeroize()` instead of `memset()` for zeroization
1295 of sensitive data in the example programs aescrypt2 and crypt_and_hash.
1296 * Change the default string format used for various X.509 DN attributes to
Simon Butcher681edee2018-11-07 16:25:38 +00001297 UTF8String. Previously, the use of the PrintableString format led to
1298 wildcards and non-ASCII characters being unusable in some DN attributes.
Hanno Beckere4f965d2018-10-11 10:54:45 +01001299 Reported by raprepo in #1860 and by kevinpt in #468. Fix contributed by
1300 Thomas-Dee.
1301 * Fix compilation failure for configurations which use compile time
1302 replacements of standard calloc/free functions through the macros
Simon Butcherc86993e2018-09-27 09:48:54 +01001303 MBEDTLS_PLATFORM_CALLOC_MACRO and MBEDTLS_PLATFORM_FREE_MACRO.
1304 Reported by ole-de and ddhome2006. Fixes #882, #1642 and #1706.
Simon Butcherc0514bf2018-09-26 18:07:18 +01001305
Simon Butcherc86993e2018-09-27 09:48:54 +01001306Changes
Gilles Peskine604ccc62018-07-10 15:55:52 +02001307 * Removed support for Yotta as a build tool.
1308 * Add tests for session resumption in DTLS.
1309 * Close a test gap in (D)TLS between the client side and the server side:
Simon Butcherddc9e262018-10-27 18:27:41 +01001310 test the handling of large packets and small packets on the client side
1311 in the same way as on the server side.
Simon Butcher404aa652018-10-01 14:44:22 +01001312 * Change the dtls_client and dtls_server samples to work by default over
1313 IPv6 and optionally by a build option over IPv4.
1314 * Change the use of Windows threading to use Microsoft Visual C++ runtime
Simon Butcher681edee2018-11-07 16:25:38 +00001315 calls, rather than Win32 API calls directly. This is necessary to avoid
1316 conflict with C runtime usage. Found and fixed by irwir.
1317 * Remember the string format of X.509 DN attributes when replicating
1318 X.509 DNs. Previously, DN attributes were always written in their default
1319 string format (mostly PrintableString), which could lead to CRTs being
1320 created which used PrintableStrings in the issuer field even though the
1321 signing CA used UTF8Strings in its subject field; while X.509 compliant,
1322 such CRTs were rejected in some applications, e.g. some versions of
Hanno Becker0bb204c2018-10-30 10:08:33 +00001323 Firefox, curl and GnuTLS. Reported in #1033 by Moschn. Fix contributed by
1324 Thomas-Dee.
Janos Follath33329372018-09-06 10:41:33 +01001325 * Improve documentation of mbedtls_ssl_get_verify_result().
1326 Fixes #517 reported by github-monoculture.
1327 * Add MBEDTLS_MPI_GEN_PRIME_FLAG_LOW_ERR flag to mbedtls_mpi_gen_prime() and
Simon Butcherc86993e2018-09-27 09:48:54 +01001328 use it to reduce error probability in RSA key generation to levels mandated
Simon Butcher5d40f672018-09-06 16:24:48 +01001329 by FIPS-186-4.
Simon Butcherb3633822018-07-30 22:10:48 +01001330
Andres Amaya Garciaa7b9f152018-08-16 21:46:35 +01001331= mbed TLS 2.13.1 branch released 2018-09-06
Hanno Beckeracef2922018-09-05 16:19:07 +01001332
Hanno Becker921b76d2018-09-05 16:21:36 +01001333API Changes
Andres Amaya Garciaa7b9f152018-08-16 21:46:35 +01001334 * Extend the platform module with an abstraction mbedtls_platform_gmtime_r()
Hanno Beckeracef2922018-09-05 16:19:07 +01001335 whose implementation should behave as a thread-safe version of gmtime().
1336 This allows users to configure such an implementation at compile time when
1337 the target system cannot be deduced automatically, by setting the option
Andres Amaya Garciaa7b9f152018-08-16 21:46:35 +01001338 MBEDTLS_PLATFORM_GMTIME_R_ALT. At this stage Mbed TLS is only able to
Simon Butcherb3633822018-07-30 22:10:48 +01001339 automatically select implementations for Windows and POSIX C libraries.
Andres Amaya Garcia8c9a6202018-09-05 11:30:28 +01001340
1341Bugfix
Simon Butcherb3633822018-07-30 22:10:48 +01001342 * Fix build failures on platforms where only gmtime() is available but
Simon Butcher4d075cd2018-08-31 15:59:10 +01001343 neither gmtime_r() nor gmtime_s() are present. Fixes #1907.
Gilles Peskine5bdb6712018-03-22 21:34:15 +01001344
k-stachowiak21feae52018-07-09 14:42:35 +02001345= mbed TLS 2.13.0 branch released 2018-08-31
k-stachowiak6ca436a2018-07-16 12:20:10 +02001346
1347Security
1348 * Fix an issue in the X.509 module which could lead to a buffer overread
1349 during certificate extensions parsing. In case of receiving malformed
k-stachowiak21feae52018-07-09 14:42:35 +02001350 input (extensions length field equal to 0), an illegal read of one byte
Manuel Pégourié-Gonnard01ec4af2017-09-21 13:16:52 +02001351 beyond the input buffer is made. Found and analyzed by Nathan Crandall.
Manuel Pégourié-Gonnard6e7aaca2018-08-20 10:37:23 +02001352
1353Features
Manuel Pégourié-Gonnardf2f1d402018-08-21 09:53:22 +02001354 * Add support for fragmentation of outgoing DTLS handshake messages. This
Manuel Pégourié-Gonnard6e7aaca2018-08-20 10:37:23 +02001355 is controlled by the maximum fragment length as set locally or negotiated
Manuel Pégourié-Gonnardb8eec192018-08-20 09:34:02 +02001356 with the peer, as well as by a new per-connection MTU option, set using
1357 mbedtls_ssl_set_mtu().
1358 * Add support for auto-adjustment of MTU to a safe value during the
Hanno Beckerd87a59c2018-08-14 16:34:55 +01001359 handshake when flights do not get through (RFC 6347, section 4.1.1.1,
1360 last paragraph).
Hanno Becker02f6f5a2018-08-28 12:54:27 +01001361 * Add support for packing multiple records within a single datagram,
Hanno Beckeraa249372018-08-22 10:27:13 +01001362 enabled by default.
1363 * Add support for buffering out-of-order handshake messages in DTLS.
1364 The maximum amount of RAM used for this can be controlled by the
Hanno Beckerd87a59c2018-08-14 16:34:55 +01001365 compile-time constant MBEDTLS_SSL_DTLS_MAX_BUFFERING defined
1366 in mbedtls/config.h.
Hanno Becker1841b0a2018-08-24 11:13:57 +01001367
Hanno Beckerd87a59c2018-08-14 16:34:55 +01001368API Changes
Manuel Pégourié-Gonnard01ec4af2017-09-21 13:16:52 +02001369 * Add function mbedtls_ssl_set_datagram_packing() to configure
Gilles Peskine104d8582018-06-27 10:57:33 +02001370 the use of datagram packing (enabled by default).
Simon Butcherb5afb972018-08-31 11:59:56 +01001371
1372Bugfix
Gilles Peskine104d8582018-06-27 10:57:33 +02001373 * Fix a potential memory leak in mbedtls_ssl_setup() function. An allocation
1374 failure in the function could lead to other buffers being leaked.
Jaeden Amerof48163a2018-08-10 10:49:10 +01001375 * Fixes an issue with MBEDTLS_CHACHAPOLY_C which would not compile if
1376 MBEDTLS_ARC4_C and MBEDTLS_CIPHER_NULL_CIPHER weren't also defined. #1890
Ron Eldor3f38cf72018-06-21 16:40:24 +03001377 * Fix a memory leak in ecp_mul_comb() if ecp_precompute_comb() fails.
Ron Eldor84e62f82018-06-28 11:09:09 +03001378 Fix contributed by Espressif Systems.
1379 * Add ecc extensions only if an ecc based ciphersuite is used.
Simon Butcherb5afb972018-08-31 11:59:56 +01001380 This improves compliance to RFC 4492, and as a result, solves
1381 interoperability issues with BouncyCastle. Raised by milenamil in #1157.
Hanno Becker9dc3be72018-08-14 15:22:05 +01001382 * Replace printf with mbedtls_printf in the ARIA module. Found by
Hanno Becker361f2542018-08-13 16:36:58 +01001383 TrinityTonic in #1908.
Hanno Beckereb2b15a2018-08-17 09:47:22 +01001384 * Fix potential use-after-free in mbedtls_ssl_get_max_frag_len()
1385 and mbedtls_ssl_get_record_expansion() after a session reset. Fixes #1941.
1386 * Fix a bug that caused SSL/TLS clients to incorrectly abort the handshake
1387 with TLS versions 1.1 and earlier when the server requested authentication
1388 without providing a list of CAs. This was due to an overly strict bounds
Hanno Becker44814642018-08-03 09:53:48 +01001389 check in parsing the CertificateRequest message,
1390 introduced in Mbed TLS 2.12.0. Fixes #1954.
1391 * Fix a miscalculation of the maximum record expansion in
Simon Butcherb5afb972018-08-31 11:59:56 +01001392 mbedtls_ssl_get_record_expansion() in case of ChachaPoly ciphersuites,
1393 or CBC ciphersuites in (D)TLS versions 1.1 or higher. Fixes #1913, #1914.
Hanno Beckera70fb952017-10-08 16:13:03 +01001394 * Fix undefined shifts with negative values in certificates parsing
1395 (found by Catena cyber using oss-fuzz)
Simon Butcherb5afb972018-08-31 11:59:56 +01001396 * Fix memory leak and free without initialization in pk_encrypt
Gilles Peskine104d8582018-06-27 10:57:33 +02001397 and pk_decrypt example programs. Reported by Brace Stout. Fixes #1128.
Jaeden Amero372b50b2018-08-10 10:56:31 +01001398 * Remove redundant else statement. Raised by irwir. Fixes #1776.
1399
1400Changes
Jaeden Amero03bd4842018-08-10 11:17:14 +01001401 * Copy headers preserving timestamps when doing a "make install".
1402 Contributed by xueruini.
Jaeden Amerod8f416982018-08-10 11:23:15 +01001403 * Allow the forward declaration of public structs. Contributed by Dawid
1404 Drozd. Fixes #1215 raised by randombit.
Hanno Beckerf1035422018-08-16 16:07:27 +01001405 * Improve compatibility with some alternative CCM implementations by using
Janos Follath08a4aeb2018-08-06 14:20:15 +01001406 CCM test vectors from RAM.
1407 * Add support for buffering of out-of-order handshake messages.
1408 * Add warnings to the documentation of the HKDF module to reduce the risk
1409 of misusing the mbedtls_hkdf_extract() and mbedtls_hkdf_expand()
Gilles Peskine5bdb6712018-03-22 21:34:15 +01001410 functions. Fixes #1775. Reported by Brian J. Murray.
1411
Gilles Peskine104d8582018-06-27 10:57:33 +02001412= mbed TLS 2.12.0 branch released 2018-07-25
1413
1414Security
1415 * Fix a vulnerability in TLS ciphersuites based on CBC and using SHA-384,
1416 in (D)TLS 1.0 to 1.2, that allowed an active network attacker to
1417 partially recover the plaintext of messages under some conditions by
1418 exploiting timing measurements. With DTLS, the attacker could perform
1419 this recovery by sending many messages in the same connection. With TLS
1420 or if mbedtls_ssl_conf_dtls_badmac_limit() was used, the attack only
1421 worked if the same secret (for example a HTTP Cookie) has been repeatedly
1422 sent over connections manipulated by the attacker. Connections using GCM
1423 or CCM instead of CBC, using hash sizes other than SHA-384, or using
1424 Encrypt-then-Mac (RFC 7366) were not affected. The vulnerability was
1425 caused by a miscalculation (for SHA-384) in a countermeasure to the
Manuel Pégourié-Gonnard1cc1fb02018-06-28 12:10:27 +02001426 original Lucky 13 attack. Found by Kenny Paterson, Eyal Ronen and Adi
1427 Shamir.
1428 * Fix a vulnerability in TLS ciphersuites based on CBC, in (D)TLS 1.0 to
Manuel Pégourié-Gonnard830ce112018-07-11 18:27:08 +02001429 1.2, that allowed a local attacker, able to execute code on the local
Antonin Décimo36e89b52019-01-23 15:24:37 +01001430 machine as well as manipulate network packets, to partially recover the
Manuel Pégourié-Gonnard830ce112018-07-11 18:27:08 +02001431 plaintext of messages under some conditions by using a cache attack
1432 targeting an internal MD/SHA buffer. With TLS or if
1433 mbedtls_ssl_conf_dtls_badmac_limit() was used, the attack only worked if
1434 the same secret (for example a HTTP Cookie) has been repeatedly sent over
1435 connections manipulated by the attacker. Connections using GCM or CCM
Manuel Pégourié-Gonnard7b420302018-06-28 10:38:35 +02001436 instead of CBC or using Encrypt-then-Mac (RFC 7366) were not affected.
1437 Found by Kenny Paterson, Eyal Ronen and Adi Shamir.
1438 * Add a counter-measure against a vulnerability in TLS ciphersuites based
1439 on CBC, in (D)TLS 1.0 to 1.2, that allowed a local attacker, able to
1440 execute code on the local machine as well as manipulate network packets,
1441 to partially recover the plaintext of messages under some conditions (see
1442 previous entry) by using a cache attack targeting the SSL input record
1443 buffer. Connections using GCM or CCM instead of CBC or using
Gilles Peskine104d8582018-06-27 10:57:33 +02001444 Encrypt-then-Mac (RFC 7366) were not affected. Found by Kenny Paterson,
Manuel Pégourié-Gonnardce8314f2018-05-03 12:49:58 +02001445 Eyal Ronen and Adi Shamir.
1446
Manuel Pégourié-Gonnard1f092b42018-06-19 12:48:24 +02001447Features
Simon Butcherf11a7cd2018-07-25 17:26:56 +01001448 * Add new crypto primitives from RFC 7539: stream cipher Chacha20, one-time
Manuel Pégourié-Gonnard1f092b42018-06-19 12:48:24 +02001449 authenticator Poly1305 and AEAD construct Chacha20-Poly1305. Contributed
Simon Butcher231d7e52018-07-10 11:56:19 +01001450 by Daniel King.
1451 * Add support for CHACHA20-POLY1305 ciphersuites from RFC 7905.
Simon Butcher00af4472018-07-10 15:35:43 +01001452 * Add platform support for the Haiku OS. (https://www.haiku-os.org).
1453 Contributed by Augustin Cavalier.
1454 * Make the receive and transmit buffers independent sizes, for situations
1455 where the outgoing buffer can be fixed at a smaller size than the incoming
1456 buffer, which can save some RAM. If buffer lengths are kept equal, there
Ron Eldor9cf0d532018-07-15 09:34:35 +03001457 is no functional difference. Contributed by Angus Gratton, and also
Simon Butcherf11a7cd2018-07-25 17:26:56 +01001458 independently contributed again by Paul Sokolovsky.
Manuel Pégourié-Gonnardce8314f2018-05-03 12:49:58 +02001459 * Add support for key wrapping modes based on AES as defined by
Simon Butcher9e02b972018-06-28 11:56:57 +01001460 NIST SP 800-38F algorithms KW and KWP and by RFC 3394 and RFC 5649.
1461
1462Bugfix
niisatob7d39db2018-06-25 20:44:57 +09001463 * Fix the key_app_writer example which was writing a leading zero byte which
niisato164b9cd2018-06-25 20:47:05 +09001464 was creating an invalid ASN.1 tag. Found by Aryeh R. Fixes #1257.
Simon Butcher1d97cab2018-06-28 12:06:16 +01001465 * Fix compilation error on C++, because of a variable named new.
Simon Butcherf11a7cd2018-07-25 17:26:56 +01001466 Found and fixed by Hirotaka Niisato in #1783.
Andres Amaya Garciaa562c262017-07-11 14:39:30 +01001467 * Fix "no symbols" warning issued by ranlib when building on Mac OS X. Fix
1468 contributed by tabascoeye.
Simon Butcher1ab9b572018-06-28 12:10:56 +01001469 * Clarify documentation for mbedtls_ssl_write() to include 0 as a valid
1470 return value. Found by @davidwu2000. #839
Simon Butcher05fa46e2018-07-02 12:00:54 +01001471 * Fix a memory leak in mbedtls_x509_csr_parse(), found by catenacyber,
1472 Philippe Antoine. Fixes #1623.
Ron Eldorda2a3122018-06-17 14:51:59 +03001473 * Remove unused headers included in x509.c. Found by Chris Hanson and fixed
1474 by Brendan Shanks. Part of a fix for #992.
Simon Butcherf11a7cd2018-07-25 17:26:56 +01001475 * Fix compilation error when MBEDTLS_ARC4_C is disabled and
1476 MBEDTLS_CIPHER_NULL_CIPHER is enabled. Found by TrinityTonic in #1719.
Simon Butcher6c344422018-06-24 16:20:56 +01001477 * Added length checks to some TLS parsing functions. Found and fixed by
1478 Philippe Antoine from Catena cyber. #1663.
Ron Eldor6332e362017-10-01 17:11:54 +03001479 * Fix the inline assembly for the MPI multiply helper function for i386 and
Ron Eldor6fd941f2017-05-14 16:17:33 +03001480 i386 with SSE2. Found by László Langó. Fixes #1550
Simon Butcherecb635e2018-07-24 10:03:41 +01001481 * Fix namespacing in header files. Remove the `mbedtls` namespacing in
1482 the `#include` in the header files. Resolves #857
1483 * Fix compiler warning of 'use before initialisation' in
Simon Butcher05330542018-07-24 12:54:15 +01001484 mbedtls_pk_parse_key(). Found by Martin Boye Petersen and fixed by Dawid
1485 Drozd. #1098
1486 * Fix decryption for zero length messages (which contain all padding) when a
1487 CBC based ciphersuite is used together with Encrypt-then-MAC. Previously,
1488 such a message was wrongly reported as an invalid record and therefore lead
1489 to the connection being terminated. Seen most often with OpenSSL using
Andres Amaya Garcia81f06332018-07-04 10:01:39 +01001490 TLS 1.0. Reported by @kFYatek and by Conor Murphy on the forum. Fix
1491 contributed by Espressif Systems. Fixes #1632
1492 * Fix ssl_client2 example to send application data with 0-length content
Simon Butcherf11a7cd2018-07-25 17:26:56 +01001493 when the request_size argument is set to 0 as stated in the documentation.
1494 Fixes #1833.
Simon Butcher2c929492018-07-24 17:20:17 +01001495 * Correct the documentation for `mbedtls_ssl_get_session()`. This API has
Simon Butcher9e02b972018-06-28 11:56:57 +01001496 deep copy of the session, and the peer certificate is not lost. Fixes #926.
Simon Butcher9fa21bf2018-06-27 10:50:58 +01001497 * Fix build using -std=c99. Fixed by Nick Wilson.
Simon Butcherf11a7cd2018-07-25 17:26:56 +01001498
1499Changes
1500 * Fail when receiving a TLS alert message with an invalid length, or invalid
1501 zero-length messages when using TLS 1.2. Contributed by Espressif Systems.
1502 * Change the default behaviour of mbedtls_hkdf_extract() to return an error
Simon Butcher9fa21bf2018-06-27 10:50:58 +01001503 when calling with a NULL salt and non-zero salt_len. Contributed by
1504 Brian J Murray
Nicholas Wilson512b4ee2017-12-05 12:07:33 +00001505 * Change the shebang line in Perl scripts to look up perl in the PATH.
1506 Contributed by fbrosson.
1507 * Allow overriding the time on Windows via the platform-time abstraction.
Simon Butcher9fa21bf2018-06-27 10:50:58 +01001508 Fixed by Nick Wilson.
Manuel Pégourié-Gonnard823c9152018-07-02 12:05:49 +02001509 * Use gmtime_r/gmtime_s for thread-safety. Fixed by Nick Wilson.
1510
1511= mbed TLS 2.11.0 branch released 2018-06-18
Simon Butcher4ed38802018-06-12 17:35:06 +01001512
1513Features
1514 * Add additional block mode, OFB (Output Feedback), to the AES module and
1515 cipher abstraction module.
1516 * Implement the HMAC-based extract-and-expand key derivation function
Jaeden Amerof4474e72018-05-23 14:21:02 +01001517 (HKDF) per RFC 5869. Contributed by Thomas Fossati.
1518 * Add support for the CCM* block cipher mode as defined in IEEE Std. 802.15.4.
Gilles Peskineb44692f2018-04-24 12:18:19 +02001519 * Add support for the XTS block cipher mode with AES (AES-XTS).
1520 Contributed by Aorimn in pull request #414.
1521 * In TLS servers, support offloading private key operations to an external
Simon Butcherebe23ed2018-06-12 16:46:45 +01001522 cryptoprocessor. Private key operations can be asynchronous to allow
Simon Butcher601144e2018-06-12 17:04:58 +01001523 non-blocking operation of the TLS server stack.
Simon Butcher4ed38802018-06-12 17:35:06 +01001524
1525Bugfix
Simon Butchere5cd8682018-06-14 10:30:19 +01001526 * Fix the cert_write example to handle certificates signed with elliptic
1527 curves as well as RSA. Fixes #777 found by dbedev.
Simon Butcher600c5e62018-06-14 08:58:59 +01001528 * Fix for redefinition of _WIN32_WINNT to avoid overriding a definition
1529 used by user applications. Found and fixed by Fabio Alessandrelli.
Simon Butcher925568a2018-06-18 11:54:44 +01001530 * Fix compilation warnings with IAR toolchain, on 32 bit platform.
Simon Butcher4ed38802018-06-12 17:35:06 +01001531 Reported by rahmanih in #683
1532 * Fix braces in mbedtls_memory_buffer_alloc_status(). Found by sbranden, #552.
1533
Simon Butcherb6a5bff2018-06-18 11:51:36 +01001534Changes
1535 * Changed CMake defaults for IAR to treat all compiler warnings as errors.
1536 * Changed the Clang parameters used in the CMake build files to work for
Manuel Pégourié-Gonnard171a4812017-05-15 17:23:37 +02001537 versions later than 3.6. Versions of Clang earlier than this may no longer
Simon Butcherd5a09f12018-06-06 14:47:47 +01001538 work. Fixes #1072
Gilles Peskine5bdb6712018-03-22 21:34:15 +01001539
Manuel Pégourié-Gonnard08d1e912018-02-27 12:43:35 +01001540= mbed TLS 2.10.0 branch released 2018-06-06
1541
1542Features
1543 * Add support for ARIA cipher (RFC 5794) and associated TLS ciphersuites
Gilles Peskine80aa3b82018-04-04 10:33:45 +02001544 (RFC 6209). Disabled by default, see MBEDTLS_ARIA_C in config.h
Andres Amaya Garcia19624052018-03-08 20:06:03 +00001545
1546API Changes
1547 * Extend the platform module with a util component that contains
1548 functionality shared by multiple Mbed TLS modules. At this stage
1549 platform_util.h (and its associated platform_util.c) only contain
1550 mbedtls_platform_zeroize(), which is a critical function from a security
1551 point of view. mbedtls_platform_zeroize() needs to be regularly tested
1552 against compilers to ensure that calls to it are not removed from the
1553 output binary as part of redundant code elimination optimizations.
Hanno Becker2bd57572018-03-28 14:52:35 +01001554 Therefore, mbedtls_platform_zeroize() is moved to the platform module to
Simon Butcherd72700a2018-06-01 19:11:55 +01001555 facilitate testing and maintenance.
1556
1557Bugfix
1558 * Fix an issue with MicroBlaze support in bn_mul.h which was causing the
Gilles Peskineb2f09c32018-03-21 12:38:00 +01001559 build to fail. Found by zv-io. Fixes #1651.
1560
Moran Pekera64fba42018-02-25 13:29:03 +02001561Changes
1562 * Support TLS testing in out-of-source builds using cmake. Fixes #1193.
Gilles Peskineb2f09c32018-03-21 12:38:00 +01001563 * Fix redundant declaration of mbedtls_ssl_list_ciphersuites. Raised by
Jaeden Amero7d7bad62018-04-27 13:07:13 +01001564 TrinityTonic. #1359.
Ron Eldorfb46c322016-12-16 16:15:56 +02001565
Simon Butcherf85c90a2017-07-27 15:11:52 +01001566= mbed TLS 2.9.0 branch released 2018-04-30
Simon Butcherb03120a2018-04-30 16:40:25 +01001567
1568Security
1569 * Fix an issue in the X.509 module which could lead to a buffer overread
1570 during certificate validation. Additionally, the issue could also lead to
1571 unnecessary callback checks being made or to some validation checks to be
1572 omitted. The overread could be triggered remotely, while the other issues
1573 would require a non DER-compliant certificate to be correctly signed by a
1574 trusted CA, or a trusted CA with a non DER-compliant certificate. Found by
1575 luocm. Fixes #825.
1576 * Fix the buffer length assertion in the ssl_parse_certificate_request()
1577 function which led to an arbitrary overread of the message buffer. The
1578 overreads could be caused by receiving a malformed message at the point
1579 where an optional signature algorithms list is expected when the signature
Andrzej Kurekb7a18c02018-04-25 05:25:30 -04001580 algorithms section is too short. In builds with debug output, the overread
Simon Butcherb03120a2018-04-30 16:40:25 +01001581 data is output with the debug data.
1582 * Fix a client-side bug in the validation of the server's ciphersuite choice
1583 which could potentially lead to the client accepting a ciphersuite it didn't
1584 offer or a ciphersuite that cannot be used with the TLS or DTLS version
Gilles Peskine5bdb6712018-03-22 21:34:15 +01001585 chosen by the server. This could lead to corruption of internal data
Gilles Peskine15ad5792018-03-22 22:21:55 +01001586 structures for some configurations.
Simon Butcherb03120a2018-04-30 16:40:25 +01001587
1588Features
1589 * Add an option, MBEDTLS_AES_FEWER_TABLES, to dynamically compute smaller AES
Gilles Peskine15ad5792018-03-22 22:21:55 +01001590 tables during runtime, thereby reducing the RAM/ROM footprint by ~6KiB.
1591 Suggested and contributed by jkivilin in pull request #394.
1592 * Add initial support for Curve448 (RFC 7748). Only mbedtls_ecp_mul() and
Simon Butchere6a2a1a2018-05-01 13:57:53 +01001593 ECDH primitive functions (mbedtls_ecdh_gen_public(),
Hanno Becker371f31c2017-06-07 15:56:54 +01001594 mbedtls_ecdh_compute_shared()) are supported for now. Contributed by
1595 Nicholas Wilson in pull request #348.
Simon Butcherb03120a2018-04-30 16:40:25 +01001596
1597API Changes
1598 * Extend the public API with the function of mbedtls_net_poll() to allow user
1599 applications to wait for a network context to become ready before reading
1600 or writing.
1601 * Add function mbedtls_ssl_check_pending() to the public API to allow
Gilles Peskine557e77d2018-04-04 09:18:11 +02001602 a check for whether more more data is pending to be processed in the
1603 internal message buffers.
Hanno Becker371f31c2017-06-07 15:56:54 +01001604 This function is necessary to determine when it is safe to idle on the
Andres AGee7157e2016-12-07 10:25:19 +00001605 underlying transport in case event-driven IO is used.
Simon Butcherb03120a2018-04-30 16:40:25 +01001606
Gilles Peskine08185402018-03-22 21:50:48 +01001607Bugfix
Gilles Peskine51d93942018-03-23 01:42:44 +01001608 * Fix a spurious uninitialized variable warning in cmac.c. Fix independently
1609 contributed by Brian J Murray and David Brown.
1610 * Add missing dependencies in test suites that led to build failures
Jaeden Amerob6049602018-03-26 18:25:58 +01001611 in configurations that omit certain hashes or public-key algorithms.
1612 Fixes #1040.
Gilles Peskinef69ad5a2018-03-27 23:08:53 +02001613 * Fix C89 incompatibility in benchmark.c. Contributed by Brendan Shanks.
Simon Butcherb03120a2018-04-30 16:40:25 +01001614 #1353
1615 * Add missing dependencies for MBEDTLS_HAVE_TIME_DATE and
1616 MBEDTLS_VERSION_FEATURES in some test suites. Contributed by
1617 Deomid Ryabkov. Fixes #1299, #1475.
Jethro Beekmand2df9362018-02-16 13:11:04 -08001618 * Fix the Makefile build process for building shared libraries on Mac OS X.
Simon Butcherb03120a2018-04-30 16:40:25 +01001619 Fixed by mnacamura.
Jethro Beekmancb122372018-04-11 08:40:38 -07001620 * Fix parsing of PKCS#8 encoded Elliptic Curve keys. Previously Mbed TLS was
Simon Butcherb03120a2018-04-30 16:40:25 +01001621 unable to parse keys which had only the optional parameters field of the
1622 ECPrivateKey structure. Found by Jethro Beekman, fixed in #1379.
1623 * Return the plaintext data more quickly on unpadded CBC decryption, as
Gilles Peskineb9e86962018-04-04 09:20:59 +02001624 stated in the mbedtls_cipher_update() documentation. Contributed by
1625 Andy Leiserson.
Hanno Beckerc53826b2017-10-12 07:46:41 +01001626 * Fix overriding and ignoring return values when parsing and writing to
1627 a file in pk_sign program. Found by kevlut in #1142.
1628 * Restrict usage of error code MBEDTLS_ERR_SSL_WANT_READ to situations
1629 where data needs to be fetched from the underlying transport in order
1630 to make progress. Previously, this error code was also occasionally
Simon Butcherb03120a2018-04-30 16:40:25 +01001631 returned when unexpected messages were being discarded, ignoring that
1632 further messages could potentially already be pending to be processed
Gilles Peskinef2b76cd2018-04-19 17:41:39 +02001633 in the internal buffers; these cases led to deadlocks when event-driven
1634 I/O was used. Found and reported by Hubert Mis in #772.
1635 * Fix buffer length assertions in the ssl_parse_certificate_request()
Andrzej Kurek5462e022018-04-20 07:58:53 -04001636 function which leads to a potential one byte overread of the message
1637 buffer.
Simon Butchere6a2a1a2018-05-01 13:57:53 +01001638 * Fix invalid buffer sizes passed to zlib during record compression and
1639 decompression.
1640 * Fix the soversion of libmbedcrypto to match the soversion of the
1641 maintained 2.7 branch. The soversion was increased in Mbed TLS
Gilles Peskine08185402018-03-22 21:50:48 +01001642 version 2.7.1 to reflect breaking changes in that release, but the
Gilles Peskine5bdb6712018-03-22 21:34:15 +01001643 increment was missed in 2.8.0 and later releases outside of the 2.7 branch.
1644
Simon Butcherb03120a2018-04-30 16:40:25 +01001645Changes
1646 * Remove some redundant code in bignum.c. Contributed by Alexey Skalozub.
Gilles Peskine51d93942018-03-23 01:42:44 +01001647 * Support cmake builds where Mbed TLS is a subproject. Fix contributed
1648 independently by Matthieu Volat and Arne Schwabe.
1649 * Improve testing in configurations that omit certain hashes or
Andres Amaya Garcia768bbaf2018-03-21 15:05:12 +00001650 public-key algorithms. Includes contributions by Gert van Dijk.
1651 * Improve negative testing of X.509 parsing.
1652 * Do not define global mutexes around readdir() and gmtime() in
Simon Butcherb03120a2018-04-30 16:40:25 +01001653 configurations where the feature is disabled. Found and fixed by Gergely
1654 Budai.
1655 * Harden the function mbedtls_ssl_config_free() against misuse, so that it
1656 doesn't leak memory if the user doesn't use mbedtls_ssl_conf_psk() and
Andres Amaya Garciacb47a792018-03-27 21:19:50 +01001657 instead incorrectly manipulates the configuration structure directly.
1658 Found and fix submitted by junyeonLEE in #1220.
1659 * Provide an empty implementation of mbedtls_pkcs5_pbes2() when
Manuel Pégourié-Gonnardfff308e2018-03-28 11:13:05 +02001660 MBEDTLS_ASN1_PARSE_C is not enabled. This allows the use of PBKDF2
1661 without PBES2. Fixed by Marcos Del Sol Vives.
1662 * Add the order of the base point as N in the mbedtls_ecp_group structure
Jaeden Amero4ba87fc2018-03-29 11:01:38 +01001663 for Curve25519 (other curves had it already). Contributed by Nicholas
1664 Wilson #481
Darryl Greeneea1c4e2018-03-29 16:05:44 +01001665 * Improve the documentation of mbedtls_net_accept(). Contributed by Ivan
1666 Krylov.
Simon Butcherb03120a2018-04-30 16:40:25 +01001667 * Improve the documentation of mbedtls_ssl_write(). Suggested by
Andres Amaya Garciad1b17882018-03-27 19:14:24 +01001668 Paul Sokolovsky in #1356.
1669 * Add an option in the Makefile to support ar utilities where the operation
Andres Amaya Garciaea5a8a42018-03-25 23:57:09 +01001670 letter must not be prefixed by '-', such as LLVM. Found and fixed by
Andres Amaya Garciad1b17882018-03-27 19:14:24 +01001671 Alex Hixon.
Gilles Peskine4e4be7c2018-03-21 16:29:03 +01001672 * Allow configuring the shared library extension by setting the DLEXT
Gilles Peskine092bf3d2018-04-01 12:43:48 +02001673 environment variable when using the project makefiles.
Gilles Peskinea09453f2018-04-04 09:14:12 +02001674 * Optimize unnecessary zeroing in mbedtls_mpi_copy. Based on a contribution
1675 by Alexey Skalozub in #405.
1676 * In the SSL module, when f_send, f_recv or f_recv_timeout report
Gilles Peskinec96ccf42018-03-31 22:57:03 +02001677 transmitting more than the required length, return an error. Raised by
1678 Sam O'Connor in #1245.
1679 * Improve robustness of mbedtls_ssl_derive_keys against the use of
Simon Butcherb03120a2018-04-30 16:40:25 +01001680 HMAC functions with non-HMAC ciphersuites. Independently contributed
1681 by Jiayuan Chen in #1377. Fixes #1437.
Gilles Peskine81021ca2018-04-19 20:59:06 +02001682 * Improve security of RSA key generation by including criteria from
1683 FIPS 186-4. Contributed by Jethro Beekman. #1380
1684 * Declare functions in header files even when an alternative implementation
1685 of the corresponding module is activated by defining the corresponding
1686 MBEDTLS_XXX_ALT macro. This means that alternative implementations do
Andrzej Kurekaca09c72018-04-13 05:18:08 -04001687 not need to copy the declarations, and ensures that they will have the
Gilles Peskine5bdb6712018-03-22 21:34:15 +01001688 same API.
Jaeden Amero8be0e6d2018-03-16 16:25:12 +00001689 * Add platform setup and teardown calls in test suites.
Gilles Peskine27b07542018-02-14 14:07:48 +01001690
Gilles Peskine04f9bd02018-02-22 15:22:44 +01001691= mbed TLS 2.8.0 branch released 2018-03-16
1692
Thomas Daubneyd596e992021-06-18 11:50:56 +01001693Default behavior changes
1694 * The truncated HMAC extension now conforms to RFC 6066. This means
1695 that when both sides of a TLS connection negotiate the truncated
1696 HMAC extension, Mbed TLS can now interoperate with other
1697 compliant implementations, but this breaks interoperability with
1698 prior versions of Mbed TLS. To restore the old behavior, enable
1699 the (deprecated) option MBEDTLS_SSL_TRUNCATED_HMAC_COMPAT in
1700 config.h. Found by Andreas Walz (ivESK, Offenburg University of
1701 Applied Sciences).
1702
Hanno Becker7dc832b2017-11-16 17:39:34 +00001703Security
Gilles Peskine04f9bd02018-02-22 15:22:44 +01001704 * Fix implementation of the truncated HMAC extension. The previous
1705 implementation allowed an offline 2^80 brute force attack on the
1706 HMAC key of a single, uninterrupted connection (with no
1707 resumption of the session).
Gilles Peskine553a06f2018-03-13 17:15:34 +01001708 * Verify results of RSA private key operations to defend
1709 against Bellcore glitch attack.
Krzysztof Stachowiak00bbf572018-03-14 11:14:13 +01001710 * Fix a buffer overread in ssl_parse_server_key_exchange() that could cause
1711 a crash on invalid input.
Krzysztof Stachowiak7fa1ae72018-03-13 17:17:38 +01001712 * Fix a buffer overread in ssl_parse_server_psk_hint() that could cause a
1713 crash on invalid input.
Manuel Pégourié-Gonnardfd3e4fb2018-03-13 11:53:30 +01001714 * Fix CRL parsing to reject CRLs containing unsupported critical
1715 extensions. Found by Falko Strenzke and Evangelos Karatsiolis.
Hanno Becker7dc832b2017-11-16 17:39:34 +00001716
Antonio Quartulli12ccef22017-12-20 07:03:55 +08001717Features
1718 * Extend PKCS#8 interface by introducing support for the entire SHA
1719 algorithms family when encrypting private keys using PKCS#5 v2.0.
Gilles Peskine1d80a672018-02-14 11:33:30 +01001720 This allows reading encrypted PEM files produced by software that
1721 uses PBKDF2-SHA2, such as OpenSSL 1.1. Submitted by Antonio Quartulli,
1722 OpenVPN Inc. Fixes #1339
Gilles Peskine3dabd6a2018-02-14 17:19:41 +01001723 * Add support for public keys encoded in PKCS#1 format. #1122
Antonio Quartulli12ccef22017-12-20 07:03:55 +08001724
Hanno Beckercf092b22018-03-06 14:23:38 +00001725New deprecations
1726 * Deprecate support for record compression (configuration option
1727 MBEDTLS_ZLIB_SUPPORT).
1728
Gilles Peskine27b07542018-02-14 14:07:48 +01001729Bugfix
1730 * Fix the name of a DHE parameter that was accidentally changed in 2.7.0.
1731 Fixes #1358.
Gilles Peskine1e3fd692018-02-14 15:12:49 +01001732 * Fix test_suite_pk to work on 64-bit ILP32 systems. #849
Ron Eldor099e61d2018-02-06 17:34:27 +02001733 * Fix mbedtls_x509_crt_profile_suiteb, which used to reject all certificates
1734 with flag MBEDTLS_X509_BADCERT_BAD_PK even when the key type was correct.
Gilles Peskine1bf61232018-02-27 08:37:52 +01001735 In the context of SSL, this resulted in handshake failure. Reported by
1736 daniel in the Mbed TLS forum. #1351
Jaeden Ameroc5d08f82018-02-21 13:32:39 +00001737 * Fix Windows x64 builds with the included mbedTLS.sln file. #1347
Gilles Peskineb4c571e2018-03-11 00:44:14 +01001738 * Fix setting version TLSv1 as minimal version, even if TLS 1
1739 is not enabled. Set MBEDTLS_SSL_MIN_MAJOR_VERSION
1740 and MBEDTLS_SSL_MIN_MINOR_VERSION instead of
1741 MBEDTLS_SSL_MAJOR_VERSION_3 and MBEDTLS_SSL_MINOR_VERSION_1. #664
Ron Eldor2f73c932017-09-26 15:06:56 +03001742 * Fix compilation error on Mingw32 when _TRUNCATE is defined. Use _TRUNCATE
1743 only if __MINGW32__ not defined. Fix suggested by Thomas Glanzmann and
Ron Eldorbc18eb32017-09-06 17:49:10 +03001744 Nick Wilson on issue #355
Gilles Peskine08af5382018-03-11 00:15:56 +01001745 * In test_suite_pk, pass valid parameters when testing for hash length
itayzafrir693a1d92018-02-26 12:02:10 +02001746 overflow. #1179
Gilles Peskinea31d8202018-03-12 23:45:08 +01001747 * Fix memory allocation corner cases in memory_buffer_alloc.c module. Found
1748 by Guido Vranken. #639
Gilles Peskine3ff4a072018-03-12 23:54:20 +01001749 * Log correct number of ciphersuites used in Client Hello message. #918
Gilles Peskine5f193282018-03-13 17:18:06 +01001750 * Fix X509 CRT parsing that would potentially accept an invalid tag when
1751 parsing the subject alternative names.
Krzysztof Stachowiak00bbf572018-03-14 11:14:13 +01001752 * Fix a possible arithmetic overflow in ssl_parse_server_key_exchange()
1753 that could cause a key exchange to fail on valid data.
Krzysztof Stachowiak7fa1ae72018-03-13 17:17:38 +01001754 * Fix a possible arithmetic overflow in ssl_parse_server_psk_hint() that
1755 could cause a key exchange to fail on valid data.
Gilles Peskine8db3efb2018-02-21 19:16:20 +01001756 * Don't define mbedtls_aes_decrypt and mbedtls_aes_encrypt under
1757 MBEDTLS_DEPRECATED_REMOVED. #1388
Sanne Woudacf793122017-09-07 16:33:44 +01001758 * Fix a 1-byte heap buffer overflow (read-only) during private key parsing.
1759 Found through fuzz testing.
Gilles Peskine27b07542018-02-14 14:07:48 +01001760
1761Changes
1762 * Fix tag lengths and value ranges in the documentation of CCM encryption.
1763 Contributed by Mathieu Briand.
Gilles Peskine5daa7652018-02-14 14:10:24 +01001764 * Fix typo in a comment ctr_drbg.c. Contributed by Paul Sokolovsky.
Gilles Peskinedf298682018-02-14 15:49:54 +01001765 * Remove support for the library reference configuration for picocoin.
Gilles Peskinebb2565c2018-02-21 17:59:40 +01001766 * MD functions deprecated in 2.7.0 are no longer inline, to provide
1767 a migration path for those depending on the library's ABI.
Gilles Peskine9c4f4032017-05-29 14:46:36 +02001768 * Clarify the documentation of mbedtls_ssl_setup.
Gilles Peskine6dc4a312018-03-13 00:13:06 +01001769 * Use (void) when defining functions with no parameters. Contributed by
1770 Joris Aerts. #678
Gilles Peskine27b07542018-02-14 14:07:48 +01001771
Simon Butcher55fc4e02018-02-05 01:09:13 +00001772= mbed TLS 2.7.0 branch released 2018-02-03
Andres Amaya Garcia06fc6652017-06-26 15:19:26 +01001773
Gilles Peskine28a0c722017-10-17 19:01:38 +02001774Security
Simon Butcher55fc4e02018-02-05 01:09:13 +00001775 * Fix a heap corruption issue in the implementation of the truncated HMAC
1776 extension. When the truncated HMAC extension is enabled and CBC is used,
1777 sending a malicious application packet could be used to selectively corrupt
1778 6 bytes on the peer's heap, which could potentially lead to crash or remote
1779 code execution. The issue could be triggered remotely from either side in
1780 both TLS and DTLS. CVE-2018-0488
1781 * Fix a buffer overflow in RSA-PSS verification when the hash was too large
1782 for the key size, which could potentially lead to crash or remote code
1783 execution. Found by Seth Terashima, Qualcomm Product Security Initiative,
1784 Qualcomm Technologies Inc. CVE-2018-0487
1785 * Fix buffer overflow in RSA-PSS verification when the unmasked data is all
1786 zeros.
1787 * Fix an unsafe bounds check in ssl_parse_client_psk_identity() when adding
1788 64 KiB to the address of the SSL buffer and causing a wrap around.
1789 * Fix a potential heap buffer overflow in mbedtls_ssl_write(). When the (by
Hanno Becker930025d2017-09-18 16:07:19 +01001790 default enabled) maximum fragment length extension is disabled in the
1791 config and the application data buffer passed to mbedtls_ssl_write
1792 is larger than the internal message buffer (16384 bytes by default), the
1793 latter overflows. The exploitability of this issue depends on whether the
1794 application layer can be forced into sending such large packets. The issue
1795 was independently reported by Tim Nordell via e-mail and by Florin Petriuc
Simon Butcher55fc4e02018-02-05 01:09:13 +00001796 and sjorsdewit on GitHub. Fix proposed by Florin Petriuc in #1022.
1797 Fixes #707.
1798 * Add a provision to prevent compiler optimizations breaking the time
1799 constancy of mbedtls_ssl_safer_memcmp().
Andres Amaya Garcia364051f2017-07-05 15:40:17 +01001800 * Ensure that buffers are cleared after use if they contain sensitive data.
Andres Amaya Garciad48ba2b2017-07-06 17:17:43 +01001801 Changes were introduced in multiple places in the library.
Ron Eldor31162e42017-09-05 15:34:35 +03001802 * Set PEM buffer to zero before freeing it, to avoid decoded private keys
1803 being leaked to memory after release.
Janos Follathb174c842017-09-20 16:26:04 +01001804 * Fix dhm_check_range() failing to detect trivial subgroups and potentially
1805 leaking 1 bit of the private key. Reported by prashantkspatil.
Simon Butcher55fc4e02018-02-05 01:09:13 +00001806 * Make mbedtls_mpi_read_binary() constant-time with respect to the input
1807 data. Previously, trailing zero bytes were detected and omitted for the
1808 sake of saving memory, but potentially leading to slight timing
1809 differences. Reported by Marco Macchetti, Kudelski Group.
Hanno Becker509fef72017-10-19 10:10:18 +01001810 * Wipe stack buffer temporarily holding EC private exponent
1811 after keypair generation.
Simon Butcher55fc4e02018-02-05 01:09:13 +00001812 * Fix a potential heap buffer over-read in ALPN extension parsing
Manuel Pégourié-Gonnard239987f2018-01-09 10:43:43 +01001813 (server-side). Could result in application crash, but only if an ALPN
1814 name larger than 16 bytes had been configured on the server.
Hanno Becker0cd5b942017-10-13 17:17:28 +01001815 * Change default choice of DHE parameters from untrustworthy RFC 5114
1816 to RFC 3526 containing parameters generated in a nothing-up-my-sleeve
1817 manner.
Gilles Peskine28a0c722017-10-17 19:01:38 +02001818
Gilles Peskineb04e2c32017-09-29 15:45:12 +02001819Features
1820 * Allow comments in test data files.
Gilles Peskinec82fbb42017-12-15 15:01:27 +01001821 * The selftest program can execute a subset of the tests based on command
1822 line arguments.
Gilles Peskine8873bcc2017-10-27 18:42:32 +02001823 * New unit tests for timing. Improve the self-test to be more robust
1824 when run on a heavily-loaded machine.
Gilles Peskine618d0912018-01-02 16:04:19 +01001825 * Add alternative implementation support for CCM and CMAC (MBEDTLS_CCM_ALT,
Jaeden Amero91d49e82018-01-11 16:35:44 +00001826 MBEDTLS_CMAC_ALT). Submitted by Steven Cooreman, Silicon Labs.
Jaeden Amero15263302017-09-21 12:53:48 +01001827 * Add support for alternative implementations of GCM, selected by the
Gilles Peskine8e09d8f2018-01-02 16:09:42 +01001828 configuration flag MBEDTLS_GCM_ALT.
Ron Eldor314adb62017-10-10 18:28:25 +03001829 * Add support for alternative implementations for ECDSA, controlled by new
1830 configuration flags MBEDTLS_ECDSA_SIGN_ALT, MBEDTLS_ECDSA_VERIFY_ALT and
1831 MBEDTLS_ECDSDA_GENKEY_AT in config.h.
Ron Eldor2981a0a2017-09-24 15:41:09 +03001832 The following functions from the ECDSA module can be replaced
Ron Eldor314adb62017-10-10 18:28:25 +03001833 with alternative implementation:
Ron Eldor2981a0a2017-09-24 15:41:09 +03001834 mbedtls_ecdsa_sign(), mbedtls_ecdsa_verify() and mbedtls_ecdsa_genkey().
Hanno Becker087d5ad2018-01-24 16:06:25 +00001835 * Add support for alternative implementation of ECDH, controlled by the
1836 new configuration flags MBEDTLS_ECDH_COMPUTE_SHARED_ALT and
Ron Eldora84c1cb2017-10-10 19:04:27 +03001837 MBEDTLS_ECDH_GEN_PUBLIC_ALT in config.h.
Ron Eldor8b766212017-09-24 15:44:56 +03001838 The following functions from the ECDH module can be replaced
1839 with an alternative implementation:
1840 mbedtls_ecdh_gen_public() and mbedtls_ecdh_compute_shared().
Hanno Becker087d5ad2018-01-24 16:06:25 +00001841 * Add support for alternative implementation of ECJPAKE, controlled by
1842 the new configuration flag MBEDTLS_ECJPAKE_ALT.
Simon Butcher55fc4e02018-02-05 01:09:13 +00001843 * Add mechanism to provide alternative implementation of the DHM module.
Gilles Peskine26182ed2017-09-29 15:45:12 +02001844
Hanno Beckera47023e2017-12-22 17:08:03 +00001845API Changes
1846 * Extend RSA interface by multiple functions allowing structure-
1847 independent setup and export of RSA contexts. Most notably,
Simon Butcher55fc4e02018-02-05 01:09:13 +00001848 mbedtls_rsa_import() and mbedtls_rsa_complete() are introduced for setting
Hanno Beckera47023e2017-12-22 17:08:03 +00001849 up RSA contexts from partial key material and having them completed to the
1850 needs of the implementation automatically. This allows to setup private RSA
1851 contexts from keys consisting of N,D,E only, even if P,Q are needed for the
1852 purpose or CRT and/or blinding.
1853 * The configuration option MBEDTLS_RSA_ALT can be used to define alternative
1854 implementations of the RSA interface declared in rsa.h.
Gilles Peskine0a969102018-01-22 14:55:20 +01001855 * The following functions in the message digest modules (MD2, MD4, MD5,
1856 SHA1, SHA256, SHA512) have been deprecated and replaced as shown below.
1857 The new functions change the return type from void to int to allow
1858 returning error codes when using MBEDTLS_<MODULE>_ALT.
1859 mbedtls_<MODULE>_starts() -> mbedtls_<MODULE>_starts_ret()
1860 mbedtls_<MODULE>_update() -> mbedtls_<MODULE>_update_ret()
1861 mbedtls_<MODULE>_finish() -> mbedtls_<MODULE>_finish_ret()
Andres Amaya Garciaf01a6442017-07-03 16:00:59 +01001862 mbedtls_<MODULE>_process() -> mbedtls_internal_<MODULE>_process()
Gilles Peskineb04e2c32017-09-29 15:45:12 +02001863
Ron Eldor73a38172017-10-03 15:58:26 +03001864New deprecations
1865 * Deprecate usage of RSA primitives with non-matching key-type
Simon Butcher55fc4e02018-02-05 01:09:13 +00001866 (e.g. signing with a public key).
Andres Amaya Garciaf569f702017-06-28 09:25:10 +01001867 * Direct manipulation of structure fields of RSA contexts is deprecated.
1868 Users are advised to use the extended RSA API instead.
Jaeden Amero005239e2018-01-25 14:47:39 +00001869 * Deprecate usage of message digest functions that return void
1870 (mbedtls_<MODULE>_starts, mbedtls_<MODULE>_update,
1871 mbedtls_<MODULE>_finish and mbedtls_<MODULE>_process where <MODULE> is
1872 any of MD2, MD4, MD5, SHA1, SHA256, SHA512) in favor of functions
1873 that can return an error code.
Hanno Becker0cd5b942017-10-13 17:17:28 +01001874 * Deprecate untrustworthy DHE parameters from RFC 5114. Superseded by
1875 parameters from RFC 3526 or the newly added parameters from RFC 7919.
1876 * Deprecate hex string DHE constants MBEDTLS_DHM_RFC3526_MODP_2048_P etc.
1877 Supserseded by binary encoded constants MBEDTLS_DHM_RFC3526_MODP_2048_P_BIN
1878 etc.
Simon Butcher55fc4e02018-02-05 01:09:13 +00001879 * Deprecate mbedtls_ssl_conf_dh_param() for setting default DHE parameters
1880 from hex strings. Superseded by mbedtls_ssl_conf_dh_param_bin()
Hanno Becker0cd5b942017-10-13 17:17:28 +01001881 accepting DHM parameters in binary form, matching the new constants.
Andres Amaya Garcia06fc6652017-06-26 15:19:26 +01001882
Andres Amaya Garcia06fc6652017-06-26 15:19:26 +01001883Bugfix
1884 * Fix ssl_parse_record_header() to silently discard invalid DTLS records
1885 as recommended in RFC 6347 Section 4.1.2.7.
Simon Butcher2c4f9462017-09-30 23:39:46 +01001886 * Fix memory leak in mbedtls_ssl_set_hostname() when called multiple times.
Simon Butcherb03120a2018-04-30 16:40:25 +01001887 Found by projectgus and Jethro Beekman, #836.
Simon Butcher16373a52017-10-02 19:12:54 +01001888 * Fix usage help in ssl_server2 example. Found and fixed by Bei Lin.
Ron Eldor73a38172017-10-03 15:58:26 +03001889 * Parse signature algorithm extension when renegotiating. Previously,
1890 renegotiated handshakes would only accept signatures using SHA-1
1891 regardless of the peer's preferences, or fail if SHA-1 was disabled.
Andres Amaya Garcia735b37e2016-11-21 15:38:02 +00001892 * Fix leap year calculation in x509_date_is_valid() to ensure that invalid
1893 dates on leap years with 100 and 400 intervals are handled correctly. Found
1894 by Nicholas Wilson. #694
Gilles Peskine91048a32017-10-19 17:46:14 +02001895 * Fix some invalid RSA-PSS signatures with keys of size 8N+1 that were
1896 accepted. Generating these signatures required the private key.
Gilles Peskinee7707222017-11-24 15:35:50 +01001897 * Fix out-of-memory problem when parsing 4096-bit PKCS8-encrypted RSA keys.
1898 Found independently by Florian in the mbed TLS forum and by Mishamax.
1899 #878, #1019.
Andres Amaya Garcia79ae0652017-06-27 16:17:54 +01001900 * Fix variable used before assignment compilation warnings with IAR
1901 toolchain. Found by gkerrien38.
Andres AG51a7ae12017-02-22 16:23:26 +00001902 * Fix unchecked return codes from AES, DES and 3DES functions in
1903 pem_aes_decrypt(), pem_des_decrypt() and pem_des3_decrypt() respectively.
1904 If a call to one of the functions of the cryptographic primitive modules
1905 failed, the error may not be noticed by the function
1906 mbedtls_pem_read_buffer() causing it to return invalid values. Found by
1907 Guido Vranken. #756
Gilles Peskine4b117d92017-11-28 17:23:37 +01001908 * Include configuration file in md.h, to fix compilation warnings.
1909 Reported by aaronmdjones in #1001
Hanno Becker041a6b02017-09-28 14:52:26 +01001910 * Correct extraction of signature-type from PK instance in X.509 CRT and CSR
1911 writing routines that prevented these functions to work with alternative
1912 RSA implementations. Raised by J.B. in the Mbed TLS forum. Fixes #1011.
Hanno Becker86e52302017-10-05 09:08:53 +01001913 * Don't print X.509 version tag for v1 CRT's, and omit extensions for
1914 non-v3 CRT's.
Gilles Peskined742b742017-11-28 17:40:56 +01001915 * Fix bugs in RSA test suite under MBEDTLS_NO_PLATFORM_ENTROPY. #1023 #1024
Simon Butcher55fc4e02018-02-05 01:09:13 +00001916 * Fix net_would_block() to avoid modification by errno through fcntl() call.
Hanno Beckera6ed9c52017-05-04 13:39:22 +01001917 Found by nkolban. Fixes #845.
Simon Butcher55fc4e02018-02-05 01:09:13 +00001918 * Fix handling of handshake messages in mbedtls_ssl_read() in case
Hanno Becker479e8e22017-10-12 15:39:45 +01001919 MBEDTLS_SSL_RENEGOTIATION is disabled. Found by erja-gp.
Simon Butcher55fc4e02018-02-05 01:09:13 +00001920 * Add a check for invalid private parameters in mbedtls_ecdsa_sign().
Darryl Green36ba8b62017-11-21 09:55:33 +00001921 Reported by Yolan Romailler.
Gilles Peskineff01e002017-12-01 23:42:17 +01001922 * Fix word size check in in pk.c to not depend on MBEDTLS_HAVE_INT64.
Gilles Peskined6294112017-12-01 23:46:58 +01001923 * Fix incorrect unit in benchmark output. #850
Hanno Becker81e96dd2017-09-18 11:07:25 +01001924 * Add size-checks for record and handshake message content, securing
1925 fragile yet non-exploitable code-paths.
Ron Eldore1a9a4a2017-10-17 18:15:41 +03001926 * Fix crash when calling mbedtls_ssl_cache_free() twice. Found by
1927 MilenkoMitrovic, #1104
Manuel Pégourié-Gonnard54059622018-01-29 10:16:30 +01001928 * Fix mbedtls_timing_alarm(0) on Unix and MinGW.
Simon Butcher55fc4e02018-02-05 01:09:13 +00001929 * Fix use of uninitialized memory in mbedtls_timing_get_timer() when reset=1.
Gilles Peskineec9c6262018-01-02 16:27:50 +01001930 * Fix possible memory leaks in mbedtls_gcm_self_test().
1931 * Added missing return code checks in mbedtls_aes_self_test().
Hanno Becker997e2182018-01-10 10:39:20 +00001932 * Fix issues in RSA key generation program programs/x509/rsa_genkey and the
1933 RSA test suite where the failure of CTR DRBG initialization lead to
1934 freeing an RSA context and several MPI's without proper initialization
1935 beforehand.
Gilles Peskine980d2032018-01-22 23:10:53 +01001936 * Fix error message in programs/pkey/gen_key.c. Found and fixed by Chris Xue.
Gilles Peskinecb1e5eb2018-01-23 00:57:34 +01001937 * Fix programs/pkey/dh_server.c so that it actually works with dh_client.c.
1938 Found and fixed by Martijn de Milliano.
Simon Butcher55fc4e02018-02-05 01:09:13 +00001939 * Fix an issue in the cipher decryption with the mode
1940 MBEDTLS_PADDING_ONE_AND_ZEROS that sometimes accepted invalid padding.
1941 Note, this padding mode is not used by the TLS protocol. Found and fixed by
1942 Micha Kraus.
Gilles Peskined91f2a22018-01-19 11:25:10 +01001943 * Fix the entropy.c module to not call mbedtls_sha256_starts() or
1944 mbedtls_sha512_starts() in the mbedtls_entropy_init() function.
1945 * Fix the entropy.c module to ensure that mbedtls_sha256_init() or
1946 mbedtls_sha512_init() is called before operating on the relevant context
Gilles Peskine0a969102018-01-22 14:55:20 +01001947 structure. Do not assume that zeroizing a context is a correct way to
1948 reset it. Found independently by ccli8 on Github.
1949 * In mbedtls_entropy_free(), properly free the message digest context.
Simon Butcher55fc4e02018-02-05 01:09:13 +00001950 * Fix status handshake status message in programs/ssl/dtls_client.c. Found
1951 and fixed by muddog.
Hanno Becker86e52302017-10-05 09:08:53 +01001952
1953Changes
Simon Butcher55fc4e02018-02-05 01:09:13 +00001954 * Extend cert_write example program by options to set the certificate version
Hanno Becker86e52302017-10-05 09:08:53 +01001955 and the message digest. Further, allow enabling/disabling of authority
1956 identifier, subject identifier and basic constraints extensions.
Hanno Becker32297e82017-12-22 10:24:32 +00001957 * Only check for necessary RSA structure fields in `mbedtls_rsa_private`. In
1958 particular, don't require P,Q if neither CRT nor blinding are
1959 used. Reported and fix proposed independently by satur9nine and sliai
1960 on GitHub.
Gilles Peskineec9c6262018-01-02 16:27:50 +01001961 * Only run AES-192 self-test if AES-192 is available. Fixes #963.
Gilles Peskine50984002018-01-17 08:01:37 +01001962 * Tighten the RSA PKCS#1 v1.5 signature verification code and remove the
1963 undeclared dependency of the RSA module on the ASN.1 module.
Gilles Peskine0a969102018-01-22 14:55:20 +01001964 * Update all internal usage of deprecated message digest functions to the
1965 new ones with return codes. In particular, this modifies the
1966 mbedtls_md_info_t structure. Propagate errors from these functions
1967 everywhere except some locations in the ssl_tls.c module.
Jaeden Amero791e08a2018-01-26 12:04:12 +00001968 * Improve CTR_DRBG error handling by propagating underlying AES errors.
Gilles Peskine7ecab3d2018-01-26 17:56:38 +01001969 * Add MBEDTLS_ERR_XXX_HW_ACCEL_FAILED error codes for all cryptography
1970 modules where the software implementation can be replaced by a hardware
1971 implementation.
Hanno Becker2a037942017-10-06 12:29:50 +01001972 * Add explicit warnings for the use of MD2, MD4, MD5, SHA-1, DES and ARC4
1973 throughout the library.
Andres Amaya Garcia06fc6652017-06-26 15:19:26 +01001974
Simon Butcher72ea31b2017-08-10 11:51:16 +01001975= mbed TLS 2.6.0 branch released 2017-08-10
Ron Eldord5a75f42016-12-16 16:15:56 +02001976
Simon Butcherb060cc22017-07-28 01:04:34 +01001977Security
Simon Butcher01971d02017-08-10 10:48:01 +01001978 * Fix authentication bypass in SSL/TLS: when authmode is set to optional,
Simon Butcherf85c90a2017-07-27 15:11:52 +01001979 mbedtls_ssl_get_verify_result() would incorrectly return 0 when the peer's
1980 X.509 certificate chain had more than MBEDTLS_X509_MAX_INTERMEDIATE_CA
Simon Butcher01971d02017-08-10 10:48:01 +01001981 (default: 8) intermediates, even when it was not trusted. This could be
1982 triggered remotely from either side. (With authmode set to 'required'
Simon Butcher3f2557e2017-08-01 18:06:12 +01001983 (the default), the handshake was correctly aborted).
1984 * Reliably wipe sensitive data after use in the AES example applications
Hanno Becker7ec83df2017-06-27 08:26:53 +01001985 programs/aes/aescrypt2 and programs/aes/crypt_and_hash.
1986 Found by Laurent Simon.
Simon Butcherf85c90a2017-07-27 15:11:52 +01001987
Andres Amaya Garcia2187e032017-07-07 13:19:13 +01001988Features
1989 * Add the functions mbedtls_platform_setup() and mbedtls_platform_teardown()
Andres Amaya Garcia24f36412017-07-12 11:27:05 +01001990 and the context struct mbedtls_platform_context to perform
1991 platform-specific setup and teardown operations. The macro
Andres Amaya Garcia5478bc72017-07-18 10:24:26 +01001992 MBEDTLS_PLATFORM_SETUP_TEARDOWN_ALT allows the functions to be overridden
Simon Butcher3f2557e2017-08-01 18:06:12 +01001993 by the user in a platform_alt.h file. These new functions are required in
Simon Butcher01971d02017-08-10 10:48:01 +01001994 some embedded environments to provide a means of initialising underlying
1995 cryptographic acceleration hardware.
Andres Amaya Garcia2187e032017-07-07 13:19:13 +01001996
Simon Butcherab670432017-07-20 12:33:41 +02001997API Changes
1998 * Reverted API/ABI breaking changes introduced in mbed TLS 2.5.1, to make the
1999 API consistent with mbed TLS 2.5.0. Specifically removed the inline
2000 qualifier from the functions mbedtls_aes_decrypt, mbedtls_aes_encrypt,
Simon Butcher3f2557e2017-08-01 18:06:12 +01002001 mbedtls_ssl_ciphersuite_uses_ec and mbedtls_ssl_ciphersuite_uses_psk. Found
2002 by James Cowgill. #978
Simon Butcherf85c90a2017-07-27 15:11:52 +01002003 * Certificate verification functions now set flags to -1 in case the full
2004 chain was not verified due to an internal error (including in the verify
2005 callback) or chain length limitations.
Simon Butcher01971d02017-08-10 10:48:01 +01002006 * With authmode set to optional, the TLS handshake is now aborted if the
Simon Butcherf85c90a2017-07-27 15:11:52 +01002007 verification of the peer's certificate failed due to an overlong chain or
Simon Butcher01971d02017-08-10 10:48:01 +01002008 a fatal error in the verify callback.
Simon Butcherab670432017-07-20 12:33:41 +02002009
Ron Eldore2efaea2016-12-16 16:15:56 +02002010Bugfix
Simon Butcher01971d02017-08-10 10:48:01 +01002011 * Add a check if iv_len is zero in GCM, and return an error if it is zero.
2012 Reported by roberto. #716
2013 * Replace preprocessor condition from #if defined(MBEDTLS_THREADING_PTHREAD)
Ron Eldor63140682017-01-09 19:27:59 +02002014 to #if defined(MBEDTLS_THREADING_C) as the library cannot assume they will
Simon Butcher3f2557e2017-08-01 18:06:12 +01002015 always be implemented by pthread support. #696
Simon Butcher01971d02017-08-10 10:48:01 +01002016 * Fix a resource leak on Windows platforms in mbedtls_x509_crt_parse_path(),
2017 in the case of an error. Found by redplait. #590
Ron Eldorca6ff582017-01-12 14:50:50 +02002018 * Add MBEDTLS_MPI_CHK to check for error value of mbedtls_mpi_fill_random.
Simon Butcher3f2557e2017-08-01 18:06:12 +01002019 Reported and fix suggested by guidovranken. #740
Andres Amaya Garciab820bf82017-05-04 11:05:55 +01002020 * Fix conditional preprocessor directives in bignum.h to enable 64-bit
2021 compilation when using ARM Compiler 6.
Simon Butcher5deb5182017-07-26 17:25:55 +01002022 * Fix a potential integer overflow in the version verification for DER
Simon Butcher3f2557e2017-08-01 18:06:12 +01002023 encoded X.509 CRLs. The overflow could enable maliciously constructed CRLs
Simon Butcher5deb5182017-07-26 17:25:55 +01002024 to bypass the version verification check. Found by Peng Li/Yueh-Hsun Lin,
2025 KNOX Security, Samsung Research America
Andres AG2e65a542017-02-17 13:54:43 +00002026 * Fix potential integer overflow in the version verification for DER
Simon Butcher3f2557e2017-08-01 18:06:12 +01002027 encoded X.509 CSRs. The overflow could enable maliciously constructed CSRs
Andres AG2e65a542017-02-17 13:54:43 +00002028 to bypass the version verification check. Found by Peng Li/Yueh-Hsun Lin,
2029 KNOX Security, Samsung Research America
Simon Butcher5deb5182017-07-26 17:25:55 +01002030 * Fix a potential integer overflow in the version verification for DER
Simon Butcher3f2557e2017-08-01 18:06:12 +01002031 encoded X.509 certificates. The overflow could enable maliciously
Simon Butcher5deb5182017-07-26 17:25:55 +01002032 constructed certificates to bypass the certificate verification check.
Simon Butchera418e822017-07-28 23:52:10 +01002033 * Fix a call to the libc function time() to call the platform abstraction
Simon Butcher3f2557e2017-08-01 18:06:12 +01002034 function mbedtls_time() instead. Found by wairua. #666
2035 * Avoid shadowing of time and index functions through mbed TLS function
2036 arguments. Found by inestlerode. #557.
Manuel Pégourié-Gonnardd15795a2017-06-22 12:19:27 +02002037
Janos Follath78b14732017-06-22 10:02:07 +01002038Changes
Janos Follathb85291c2017-06-22 10:02:07 +01002039 * Added config.h option MBEDTLS_NO_UDBL_DIVISION, to prevent the use of
Simon Butcher3f2557e2017-08-01 18:06:12 +01002040 64-bit division. This is useful on embedded platforms where 64-bit division
2041 created a dependency on external libraries. #708
Janos Follath78b14732017-06-22 10:02:07 +01002042 * Removed mutexes from ECP hardware accelerator code. Now all hardware
2043 accelerator code in the library leaves concurrency handling to the
2044 platform. Reported by Steven Cooreman. #863
Andres Amaya Garciad0e15d72017-06-26 12:57:44 +01002045 * Define the macro MBEDTLS_AES_ROM_TABLES in the configuration file
2046 config-no-entropy.h to reduce the RAM footprint.
Simon Butcher3f2557e2017-08-01 18:06:12 +01002047 * Added a test script that can be hooked into git that verifies commits
2048 before they are pushed.
Hanno Becker85b602e2017-05-04 11:27:39 +01002049 * Improve documentation of PKCS1 decryption functions.
Janos Follath78b14732017-06-22 10:02:07 +01002050
Simon Butcherf2a597f2017-06-20 23:08:10 +01002051= mbed TLS 2.5.1 released 2017-06-21
Hanno Beckereccf60c2017-06-05 15:19:01 +01002052
Gilles Peskine5e79cb32017-05-04 16:17:21 +02002053Security
Hanno Beckerbf4c2e32017-06-09 11:28:45 +01002054 * Fixed unlimited overread of heap-based buffer in mbedtls_ssl_read().
2055 The issue could only happen client-side with renegotiation enabled.
2056 Could result in DoS (application crash) or information leak
2057 (if the application layer sent data read from mbedtls_ssl_read()
2058 back to the server or to a third party). Can be triggered remotely.
Gilles Peskine5d2511c2017-05-12 13:16:40 +02002059 * Removed SHA-1 and RIPEMD-160 from the default hash algorithms for
2060 certificate verification. SHA-1 can be turned back on with a compile-time
2061 option if needed.
Gilles Peskined50177f2017-05-16 17:53:03 +02002062 * Fixed offset in FALLBACK_SCSV parsing that caused TLS server to fail to
2063 detect it sometimes. Reported by Hugo Leisink. #810
Manuel Pégourié-Gonnardc1380de2017-05-11 12:49:51 +02002064 * Tighten parsing of RSA PKCS#1 v1.5 signatures, to avoid a
2065 potential Bleichenbacher/BERserk-style attack.
Gilles Peskine5e79cb32017-05-04 16:17:21 +02002066
Hanno Beckereccf60c2017-06-05 15:19:01 +01002067Bugfix
Janos Follath5a1c0e72017-06-16 09:00:07 +01002068 * Remove size zero arrays from ECJPAKE test suite. Size zero arrays are not
2069 valid C and they prevented the test from compiling in Visual Studio 2015
2070 and with GCC using the -Wpedantic compilation option.
Hanno Becker7e5437a2017-04-28 17:15:26 +01002071 * Fix insufficient support for signature-hash-algorithm extension,
2072 resulting in compatibility problems with Chrome. Found by hfloyrd. #823
Janos Follath5a1c0e72017-06-16 09:00:07 +01002073 * Fix behaviour that hid the original cause of fatal alerts in some cases
2074 when sending the alert failed. The fix makes sure not to hide the error
Gilles Peskine3df98f52017-05-10 17:47:40 +02002075 that triggered the alert.
Janos Follath5a1c0e72017-06-16 09:00:07 +01002076 * Fix SSLv3 renegotiation behaviour and stop processing data received from
2077 peer after sending a fatal alert to refuse a renegotiation attempt.
2078 Previous behaviour was to keep processing data even after the alert has
2079 been sent.
Hanno Becker39ae8cd2017-05-08 16:31:14 +01002080 * Accept empty trusted CA chain in authentication mode
Simon Butcherb03120a2018-04-30 16:40:25 +01002081 MBEDTLS_SSL_VERIFY_OPTIONAL. Found by Jethro Beekman. #864
Janos Follath5a1c0e72017-06-16 09:00:07 +01002082 * Fix implementation of mbedtls_ssl_parse_certificate() to not annihilate
2083 fatal errors in authentication mode MBEDTLS_SSL_VERIFY_OPTIONAL and to
2084 reflect bad EC curves within verification result.
2085 * Fix bug that caused the modular inversion function to accept the invalid
2086 modulus 1 and therefore to hang. Found by blaufish. #641.
2087 * Fix incorrect sign computation in modular exponentiation when the base is
2088 a negative MPI. Previously the result was always negative. Found by Guido
2089 Vranken.
2090 * Fix a numerical underflow leading to stack overflow in mpi_read_file()
2091 that was triggered uppon reading an empty line. Found by Guido Vranken.
Gilles Peskine3df98f52017-05-10 17:47:40 +02002092
Gilles Peskine36091fe2017-05-03 16:55:03 +02002093Changes
Janos Follath5a1c0e72017-06-16 09:00:07 +01002094 * Send fatal alerts in more cases. The previous behaviour was to skip
2095 sending the fatal alert and just drop the connection.
Janos Follath0a5154b2017-03-10 11:31:41 +00002096 * Clarify ECDSA documentation and improve the sample code to avoid
Janos Follath5a1c0e72017-06-16 09:00:07 +01002097 misunderstanding and potentially dangerous use of the API. Pointed out
Janos Follath0a5154b2017-03-10 11:31:41 +00002098 by Jean-Philippe Aumasson.
Gilles Peskine36091fe2017-05-03 16:55:03 +02002099
Simon Butcher9f770172017-05-15 15:13:59 +01002100= mbed TLS 2.5.0 branch released 2017-05-17
Andres Amaya Garcia75fdf632017-05-02 16:01:20 +01002101
Janos Follath45182a02017-03-23 10:41:56 +00002102Security
Gilles Peskine4a7f6a02017-03-23 14:37:37 +01002103 * Wipe stack buffers in RSA private key operations
Janos Follath5a1c0e72017-06-16 09:00:07 +01002104 (rsa_rsaes_pkcs1_v15_decrypt(), rsa_rsaes_oaep_decrypt). Found by Laurent
2105 Simon.
Janos Follath45182a02017-03-23 10:41:56 +00002106 * Add exponent blinding to RSA private operations as a countermeasure
2107 against side-channel attacks like the cache attack described in
2108 https://arxiv.org/abs/1702.08719v2.
2109 Found and fix proposed by Michael Schwarz, Samuel Weiser, Daniel Gruss,
2110 Clémentine Maurice and Stefan Mangard.
2111
Simon Butcher4775e832017-05-13 22:56:08 +01002112Features
Janos Follath5a1c0e72017-06-16 09:00:07 +01002113 * Add hardware acceleration support for the Elliptic Curve Point module.
2114 This involved exposing parts of the internal interface to enable
2115 replacing the core functions and adding and alternative, module level
2116 replacement support for enabling the extension of the interface.
Janos Follath7a8a0902017-04-10 16:13:06 +01002117 * Add a new configuration option to 'mbedtls_ssl_config' to enable
2118 suppressing the CA list in Certificate Request messages. The default
2119 behaviour has not changed, namely every configured CAs name is included.
2120
Andres AGf5bf7182017-03-03 14:09:56 +00002121API Changes
2122 * The following functions in the AES module have been deprecated and replaced
2123 by the functions shown below. The new functions change the return type from
2124 void to int to allow returning error codes when using MBEDTLS_AES_ALT,
2125 MBEDTLS_AES_DECRYPT_ALT or MBEDTLS_AES_ENCRYPT_ALT.
2126 mbedtls_aes_decrypt() -> mbedtls_internal_aes_decrypt()
2127 mbedtls_aes_encrypt() -> mbedtls_internal_aes_encrypt()
2128
Andres Amaya Garcia75fdf632017-05-02 16:01:20 +01002129Bugfix
2130 * Remove macros from compat-1.3.h that correspond to deleted items from most
2131 recent versions of the library. Found by Kyle Keen.
Janos Follath5a1c0e72017-06-16 09:00:07 +01002132 * Fixed issue in the Threading module that prevented mutexes from
2133 initialising. Found by sznaider. #667 #843
2134 * Add checks in the PK module for the RSA functions on 64-bit systems.
2135 The PK and RSA modules use different types for passing hash length and
2136 without these checks the type cast could lead to data loss. Found by Guido
2137 Vranken.
Andres Amaya Garcia75fdf632017-05-02 16:01:20 +01002138
Simon Butcherb65c2be2017-03-10 18:50:44 +00002139= mbed TLS 2.4.2 branch released 2017-03-08
Andres AG703990b2016-10-24 11:23:36 +01002140
Janos Follath182013f2016-10-25 10:50:22 +01002141Security
Simon Butcherb65c2be2017-03-10 18:50:44 +00002142 * Add checks to prevent signature forgeries for very large messages while
2143 using RSA through the PK module in 64-bit systems. The issue was caused by
2144 some data loss when casting a size_t to an unsigned int value in the
2145 functions rsa_verify_wrap(), rsa_sign_wrap(), rsa_alt_sign_wrap() and
2146 mbedtls_pk_sign(). Found by Jean-Philippe Aumasson.
Andres AG939954c2016-12-08 17:08:44 +00002147 * Fixed potential livelock during the parsing of a CRL in PEM format in
2148 mbedtls_x509_crl_parse(). A string containing a CRL followed by trailing
2149 characters after the footer could result in the execution of an infinite
2150 loop. The issue can be triggered remotely. Found by Greg Zaverucha,
2151 Microsoft.
Janos Follath182013f2016-10-25 10:50:22 +01002152 * Removed MD5 from the allowed hash algorithms for CertificateRequest and
2153 CertificateVerify messages, to prevent SLOTH attacks against TLS 1.2.
Simon Butcher0621b1f2017-02-05 16:48:47 +00002154 Introduced by interoperability fix for #513.
Janos Follath7dadc2f2017-01-27 16:05:20 +00002155 * Fixed a bug that caused freeing a buffer that was allocated on the stack,
2156 when verifying the validity of a key on secp224k1. This could be
2157 triggered remotely for example with a maliciously constructed certificate
Simon Butcher71e9d582017-02-28 18:47:27 +00002158 and potentially could lead to remote code execution on some platforms.
Simon Butcher8b987502017-03-07 12:37:14 +00002159 Reported independently by rongsaws and Aleksandar Nikolic, Cisco Talos
2160 team. #569 CVE-2017-2784
Janos Follath7dadc2f2017-01-27 16:05:20 +00002161
Andres AG703990b2016-10-24 11:23:36 +01002162Bugfix
Andres AGd1650662016-12-09 17:26:23 +00002163 * Fix output certificate verification flags set by x509_crt_verify_top() when
2164 traversing a chain of trusted CA. The issue would cause both flags,
2165 MBEDTLS_X509_BADCERT_NOT_TRUSTED and MBEDTLS_X509_BADCERT_EXPIRED, to be
2166 set when the verification conditions are not met regardless of the cause.
2167 Found by Harm Verhagen and inestlerode. #665 #561
Simon Butcherd57c8f02017-02-02 13:08:37 +00002168 * Fix the redefinition of macro ssl_set_bio to an undefined symbol
2169 mbedtls_ssl_set_bio_timeout in compat-1.3.h, by removing it.
2170 Found by omlib-lin. #673
Andres AGc0db5112016-12-07 15:05:53 +00002171 * Fix unused variable/function compilation warnings in pem.c, x509_crt.c and
2172 x509_csr.c that are reported when building mbed TLS with a config.h that
Simon Butchera333b3c2017-02-02 16:17:37 +00002173 does not define MBEDTLS_PEM_PARSE_C. Found by omnium21. #562
Andres AG2196c7f2016-12-15 17:01:16 +00002174 * Fix incorrect renegotiation condition in ssl_check_ctr_renegotiate() that
2175 would compare 64 bits of the record counter instead of 48 bits as indicated
2176 in RFC 6347 Section 4.3.1. This could cause the execution of the
2177 renegotiation routines at unexpected times when the protocol is DTLS. Found
2178 by wariua. #687
Andres AG703990b2016-10-24 11:23:36 +01002179 * Fixed multiple buffer overreads in mbedtls_pem_read_buffer() when parsing
Andres AG9c94b692016-10-24 14:31:54 +01002180 the input string in PEM format to extract the different components. Found
Andres AG703990b2016-10-24 11:23:36 +01002181 by Eyal Itkin.
Andres Amaya Garcia6a543362017-01-17 23:04:22 +00002182 * Fixed potential arithmetic overflow in mbedtls_ctr_drbg_reseed() that could
2183 cause buffer bound checks to be bypassed. Found by Eyal Itkin.
2184 * Fixed potential arithmetic overflows in mbedtls_cipher_update() that could
2185 cause buffer bound checks to be bypassed. Found by Eyal Itkin.
2186 * Fixed potential arithmetic overflow in mbedtls_md2_update() that could
2187 cause buffer bound checks to be bypassed. Found by Eyal Itkin.
Andres AG4623d832017-01-18 17:21:03 +00002188 * Fixed potential arithmetic overflow in mbedtls_base64_decode() that could
2189 cause buffer bound checks to be bypassed. Found by Eyal Itkin.
Janos Follath87c98072017-02-03 12:36:59 +00002190 * Fixed heap overreads in mbedtls_x509_get_time(). Found by Peng
2191 Li/Yueh-Hsun Lin, KNOX Security, Samsung Research America.
Andres AG5708dcb2016-12-08 17:19:21 +00002192 * Fix potential memory leak in mbedtls_x509_crl_parse(). The leak was caused
2193 by missing calls to mbedtls_pem_free() in cases when a
Simon Butcherd02dc142017-02-28 16:36:22 +00002194 MBEDTLS_ERR_PEM_NO_HEADER_FOOTER_PRESENT error was encountered. Found and
2195 fix proposed by Guido Vranken. #722
Simon Butcher956c58f2017-03-02 09:18:09 +00002196 * Fixed the templates used to generate project and solution files for Visual
2197 Studio 2015 as well as the files themselves, to remove a build warning
2198 generated in Visual Studio 2015. Reported by Steve Valliere. #742
Ron Eldor12e0b802017-01-29 18:51:35 +02002199 * Fix a resource leak in ssl_cookie, when using MBEDTLS_THREADING_C.
2200 Raised and fix suggested by Alan Gillingham in the mbed TLS forum. #771
Andres AGd1cc7f62017-01-06 13:17:35 +00002201 * Fix 1 byte buffer overflow in mbedtls_mpi_write_string() when the MPI
2202 number to write in hexadecimal is negative and requires an odd number of
2203 digits. Found and fixed by Guido Vranken.
Simon Butcher81cf88f2017-03-07 19:35:49 +00002204 * Fix unlisted DES configuration dependency in some pkparse test cases. Found
2205 by inestlerode. #555
Andres AG703990b2016-10-24 11:23:36 +01002206
Janos Follath4c006cd2016-12-13 14:14:03 +00002207= mbed TLS 2.4.1 branch released 2016-12-13
Janos Follath5da3a6f2016-12-13 11:51:04 +00002208
2209Changes
2210 * Update to CMAC test data, taken from - NIST Special Publication 800-38B -
2211 Recommendation for Block Cipher Modes of Operation: The CMAC Mode for
2212 Authentication – October 2016
2213
Simon Butcher19dbd412016-10-16 19:35:49 +01002214= mbed TLS 2.4.0 branch released 2016-10-17
Simon Butchercf8c1f42016-09-02 21:29:39 +03002215
Andres AG60dbc932016-09-02 15:23:48 +01002216Security
Simon Butcheref8fa012016-10-16 00:44:08 +01002217 * Removed the MBEDTLS_SSL_AEAD_RANDOM_IV option, because it was not compliant
2218 with RFC-5116 and could lead to session key recovery in very long TLS
2219 sessions. "Nonce-Disrespecting Adversaries Practical Forgery Attacks on GCM in
2220 TLS" - H. Bock, A. Zauner, S. Devlin, J. Somorovsky, P. Jovanovic.
2221 https://eprint.iacr.org/2016/475.pdf
2222 * Fixed potential stack corruption in mbedtls_x509write_crt_der() and
Andres AG60dbc932016-09-02 15:23:48 +01002223 mbedtls_x509write_csr_der() when the signature is copied to the buffer
Andres AGe0af9952016-09-07 11:09:44 +01002224 without checking whether there is enough space in the destination. The
Simon Butcheref8fa012016-10-16 00:44:08 +01002225 issue cannot be triggered remotely. Found by Jethro Beekman.
Andres AG60dbc932016-09-02 15:23:48 +01002226
Simon Butchercf8c1f42016-09-02 21:29:39 +03002227Features
Simon Butcher21c54812016-10-05 14:17:37 +01002228 * Added support for CMAC for AES and 3DES and AES-CMAC-PRF-128, as defined by
2229 NIST SP 800-38B, RFC-4493 and RFC-4615.
Simon Butchercf8c1f42016-09-02 21:29:39 +03002230 * Added hardware entropy selftest to verify that the hardware entropy source
2231 is functioning correctly.
2232 * Added a script to print build environment info for diagnostic use in test
2233 scripts, which is also now called by all.sh.
Andres AGf9113192016-09-02 14:06:04 +01002234 * Added the macro MBEDTLS_X509_MAX_FILE_PATH_LEN that enables the user to
2235 configure the maximum length of a file path that can be buffered when
2236 calling mbedtls_x509_crt_parse_path().
Simon Butcheref8fa012016-10-16 00:44:08 +01002237 * Added a configuration file config-no-entropy.h that configures the subset of
Andres AGf84f8922016-09-19 15:33:30 +01002238 library features that do not require an entropy source.
Andres AG7abc9742016-09-23 17:58:49 +01002239 * Added the macro MBEDTLS_ENTROPY_MIN_HARDWARE in config.h. This allows users
2240 to configure the minimum number of bytes for entropy sources using the
2241 mbedtls_hardware_poll() function.
Simon Butchercf8c1f42016-09-02 21:29:39 +03002242
2243Bugfix
2244 * Fix for platform time abstraction to avoid dependency issues where a build
2245 may need time but not the standard C library abstraction, and added
2246 configuration consistency checks to check_config.h
2247 * Fix dependency issue in Makefile to allow parallel builds.
Simon Butcheref8fa012016-10-16 00:44:08 +01002248 * Fix incorrect handling of block lengths in crypt_and_hash.c sample program,
2249 when GCM is used. Found by udf2457. #441
Simon Butchercad6e932016-09-05 01:46:59 +03002250 * Fix for key exchanges based on ECDH-RSA or ECDH-ECDSA which weren't
2251 enabled unless others were also present. Found by David Fernandez. #428
Simon Butcherc0d76b82016-09-07 17:25:16 +03002252 * Fix for out-of-tree builds using CMake. Found by jwurzer, and fix based on
2253 a contribution from Tobias Tangemann. #541
Simon Butcheref8fa012016-10-16 00:44:08 +01002254 * Fixed cert_app.c sample program for debug output and for use when no root
Simon Butcherd43fb952016-09-26 20:48:56 +01002255 certificates are provided.
Andres AG776a6fc2016-09-26 09:52:41 +01002256 * Fix conditional statement that would cause a 1 byte overread in
Simon Butcher3a5e0702016-10-12 16:37:59 +01002257 mbedtls_asn1_get_int(). Found and fixed by Guido Vranken. #599
Simon Butcher851ae292016-10-11 10:13:52 +01002258 * Fixed pthread implementation to avoid unintended double initialisations
Simon Butcheref8fa012016-10-16 00:44:08 +01002259 and double frees. Found by Niklas Amnebratt.
Simon Butcherf77309c2016-10-07 15:56:07 +01002260 * Fixed the sample applications gen_key.c, cert_req.c and cert_write.c for
2261 builds where the configuration MBEDTLS_PEM_WRITE_C is not defined. Found
2262 by inestlerode. #559.
Andres AG4bdbe092016-09-19 16:58:45 +01002263 * Fix mbedtls_x509_get_sig() to update the ASN1 type in the mbedtls_x509_buf
2264 data structure until after error checks are successful. Found by
Simon Butcherb81496b2016-10-13 14:03:37 +01002265 subramanyam-c. #622
Andres AG821da842016-09-26 10:09:30 +01002266 * Fix documentation and implementation missmatch for function arguments of
Simon Butcherf6e3b9e2016-10-12 19:47:29 +01002267 mbedtls_gcm_finish(). Found by cmiatpaar. #602
Simon Butcher4d69ecd2016-10-13 00:14:37 +01002268 * Guarantee that P>Q at RSA key generation. Found by inestlerode. #558
Andres AG5a87c932016-09-26 14:53:05 +01002269 * Fix potential byte overread when verifying malformed SERVER_HELLO in
2270 ssl_parse_hello_verify_request() for DTLS. Found by Guido Vranken.
Andres AG4b76aec2016-09-23 13:16:02 +01002271 * Fix check for validity of date when parsing in mbedtls_x509_get_time().
Simon Butcher2bd0fba2016-10-13 16:29:56 +01002272 Found by subramanyam-c. #626
Simon Butcher99000142016-10-13 17:21:01 +01002273 * Fix compatibility issue with Internet Explorer client authentication,
2274 where the limited hash choices prevented the client from sending its
2275 certificate. Found by teumas. #513
Janos Follath240f1852016-10-14 15:23:21 +01002276 * Fix compilation without MBEDTLS_SELF_TEST enabled.
Simon Butchercf8c1f42016-09-02 21:29:39 +03002277
2278Changes
2279 * Extended test coverage of special cases, and added new timing test suite.
2280 * Removed self-tests from the basic-built-test.sh script, and added all
2281 missing self-tests to the test suites, to ensure self-tests are only
2282 executed once.
2283 * Added support for 3 and 4 byte lengths to mbedtls_asn1_write_len().
2284 * Added support for a Yotta specific configuration file -
2285 through the symbol YOTTA_CFG_MBEDTLS_TARGET_CONFIG_FILE.
Simon Butcher5908bcc2016-09-04 15:12:09 +01002286 * Added optimization for code space for X.509/OID based on configured
Simon Butcheref8fa012016-10-16 00:44:08 +01002287 features. Contributed by Aviv Palivoda.
Andres AG788aa4a2016-09-14 14:32:09 +01002288 * Renamed source file library/net.c to library/net_sockets.c to avoid
2289 naming collision in projects which also have files with the common name
2290 net.c. For consistency, the corresponding header file, net.h, is marked as
2291 deprecated, and its contents moved to net_sockets.h.
Simon Butcher59bffa22016-10-13 15:55:56 +01002292 * Changed the strategy for X.509 certificate parsing and validation, to no
2293 longer disregard certificates with unrecognised fields.
Simon Butchercf8c1f42016-09-02 21:29:39 +03002294
Simon Butcher46125fb2016-06-27 19:43:55 +01002295= mbed TLS 2.3.0 branch released 2016-06-28
Manuel Pégourié-Gonnardafbb3102016-01-07 13:26:11 +01002296
Janos Follathcc4eba72016-02-10 16:25:55 +00002297Security
Janos Follathe43b81a2016-02-10 16:25:55 +00002298 * Fix missing padding length check in mbedtls_rsa_rsaes_pkcs1_v15_decrypt
Janos Follath3218b212016-02-10 16:14:10 +00002299 required by PKCS1 v2.2
Janos Follathe43b81a2016-02-10 16:25:55 +00002300 * Fix potential integer overflow to buffer overflow in
2301 mbedtls_rsa_rsaes_pkcs1_v15_encrypt and mbedtls_rsa_rsaes_oaep_encrypt
Manuel Pégourié-Gonnard8ddc93f2016-02-11 10:35:13 +01002302 (not triggerable remotely in (D)TLS).
Hanno Becker01a0e072017-07-26 11:49:40 +01002303 * Fix a potential integer underflow to buffer overread in
Janos Follathbc247c92016-02-11 11:15:44 +00002304 mbedtls_rsa_rsaes_oaep_decrypt. It is not triggerable remotely in
2305 SSL/TLS.
Janos Follathcc4eba72016-02-10 16:25:55 +00002306
Simon Butcher3fe6cd32016-04-26 19:51:29 +01002307Features
2308 * Support for platform abstraction of the standard C library time()
2309 function.
2310
Manuel Pégourié-Gonnardafbb3102016-01-07 13:26:11 +01002311Bugfix
2312 * Fix bug in mbedtls_mpi_add_mpi() that caused wrong results when the three
2313 arguments where the same (in-place doubling). Found and fixed by Janos
Manuel Pégourié-Gonnard35519012016-01-07 13:06:51 +01002314 Follath. #309
Manuel Pégourié-Gonnardc9901892016-01-12 13:59:39 +00002315 * Fix potential build failures related to the 'apidoc' target, introduced
2316 in the previous patch release. Found by Robert Scheck. #390 #391
Manuel Pégourié-Gonnard35519012016-01-07 13:06:51 +01002317 * Fix issue in Makefile that prevented building using armar. #386
Antonin Décimo36e89b52019-01-23 15:24:37 +01002318 * Fix memory leak that occurred only when ECJPAKE was enabled and ECDHE and
Janos Follath4ae5c292016-02-10 11:27:43 +00002319 ECDSA was disabled in config.h . The leak didn't occur by default.
Simon Butcherf59e66b2016-03-01 20:26:16 +00002320 * Fix an issue that caused valid certificates to be rejected whenever an
2321 expired or not yet valid certificate was parsed before a valid certificate
2322 in the trusted certificate list.
Hanno Becker01a0e072017-07-26 11:49:40 +01002323 * Fix bug in mbedtls_x509_crt_parse that caused trailing extra data in the
Janos Follathcc0e49d2016-02-17 14:34:12 +00002324 buffer after DER certificates to be included in the raw representation.
Simon Butcher3f5c8752016-04-15 19:06:59 +01002325 * Fix issue that caused a hang when generating RSA keys of odd bitlength
Janos Follath1ed9f992016-03-18 11:45:44 +00002326 * Fix bug in mbedtls_rsa_rsaes_pkcs1_v15_encrypt that made null pointer
2327 dereference possible.
Janos Follath8a317052016-04-21 23:37:09 +01002328 * Fix issue that caused a crash if invalid curves were passed to
2329 mbedtls_ssl_conf_curves. #373
Simon Butcherf8935072016-04-29 00:05:32 +01002330 * Fix issue in ssl_fork_server which was preventing it from functioning. #429
Paul Bakker8f0e4c22016-05-12 16:38:27 +01002331 * Fix memory leaks in test framework
Paul Bakkerf8e37942016-05-13 10:50:41 +01002332 * Fix test in ssl-opt.sh that does not run properly with valgrind
Simon Butcher46125fb2016-06-27 19:43:55 +01002333 * Fix unchecked calls to mmbedtls_md_setup(). Fix by Brian Murray. #502
Manuel Pégourié-Gonnardafbb3102016-01-07 13:26:11 +01002334
Manuel Pégourié-Gonnard25caaf32016-01-08 14:29:11 +01002335Changes
2336 * On ARM platforms, when compiling with -O0 with GCC, Clang or armcc5,
2337 don't use the optimized assembly for bignum multiplication. This removes
2338 the need to pass -fomit-frame-pointer to avoid a build error with -O0.
Simon Butcherd7e9ad72016-04-25 16:07:12 +01002339 * Disabled SSLv3 in the default configuration.
Simon Butchera543d112016-04-26 12:51:37 +01002340 * Optimized mbedtls_mpi_zeroize() for MPI integer size. (Fix by Alexey
2341 Skalozub).
Janos Follathc6dab2b2016-05-23 14:27:02 +01002342 * Fix non-compliance server extension handling. Extensions for SSLv3 are now
2343 ignored, as required by RFC6101.
Manuel Pégourié-Gonnardf92c86e2016-01-07 13:18:01 +01002344
2345= mbed TLS 2.2.1 released 2016-01-05
2346
2347Security
Manuel Pégourié-Gonnard97b52092015-12-10 10:50:51 +01002348 * Fix potential double free when mbedtls_asn1_store_named_data() fails to
Manuel Pégourié-Gonnard1e075622015-12-10 14:46:25 +01002349 allocate memory. Only used for certificate generation, not triggerable
Simon Butcher00923c12015-12-22 19:04:24 +00002350 remotely in SSL/TLS. Found by Rafał Przywara. #367
Manuel Pégourié-Gonnardf4569b12015-11-19 09:23:06 +01002351 * Disable MD5 handshake signatures in TLS 1.2 by default to prevent the
2352 SLOTH attack on TLS 1.2 server authentication (other attacks from the
2353 SLOTH paper do not apply to any version of mbed TLS or PolarSSL).
Manuel Pégourié-Gonnard7f88b8e2016-01-04 17:36:44 +01002354 https://www.mitls.org/pages/attacks/SLOTH
Simon Butcher1285ab52016-01-01 21:42:47 +00002355
Manuel Pégourié-Gonnard7f88b8e2016-01-04 17:36:44 +01002356Bugfix
2357 * Fix over-restrictive length limit in GCM. Found by Andreas-N. #362
2358 * Fix bug in certificate validation that caused valid chains to be rejected
2359 when the first intermediate certificate has pathLenConstraint=0. Found by
2360 Nicholas Wilson. Introduced in mbed TLS 2.2.0. #280
Simon Butcher207990d2015-12-16 01:51:30 +00002361 * Removed potential leak in mbedtls_rsa_rsassa_pkcs1_v15_sign(), found by
Simon Butcher8254ed22015-11-04 11:04:00 +00002362 JayaraghavendranK. #372
Simon Butcher04799a42015-09-29 00:31:09 +01002363 * Fix suboptimal handling of unexpected records that caused interop issues
Manuel Pégourié-Gonnard2b624e92015-10-30 09:35:03 +01002364 with some peers over unreliable links. Avoid dropping an entire DTLS
Manuel Pégourié-Gonnard173c7902015-10-20 19:56:45 +02002365 datagram if a single record in a datagram is unexpected, instead only
2366 drop the record and look at subsequent records (if any are present) in
2367 the same datagram. Found by jeannotlapin. #345
Manuel Pégourié-Gonnard261faed2015-10-21 10:16:29 +02002368
2369= mbed TLS 2.2.0 released 2015-11-04
Simon Butcher59a8fa72015-11-03 23:09:28 +00002370
Manuel Pégourié-Gonnard22c3b7b2015-10-21 12:07:47 +02002371Security
2372 * Fix potential double free if mbedtls_ssl_conf_psk() is called more than
2373 once and some allocation fails. Cannot be forced remotely. Found by Guido
Simon Butcher59a8fa72015-11-03 23:09:28 +00002374 Vranken, Intelworks.
Manuel Pégourié-Gonnard2b624e92015-10-30 09:35:03 +01002375 * Fix potential heap corruption on Windows when
2376 mbedtls_x509_crt_parse_path() is passed a path longer than 2GB. Cannot be
2377 triggered remotely. Found by Guido Vranken, Intelworks.
2378 * Fix potential buffer overflow in some asn1_write_xxx() functions.
Manuel Pégourié-Gonnard1ef96c22015-10-20 15:04:57 +02002379 Cannot be triggered remotely unless you create X.509 certificates based
2380 on untrusted input or write keys of untrusted origin. Found by Guido
2381 Vranken, Intelworks.
2382 * The X509 max_pathlen constraint was not enforced on intermediate
2383 certificates. Found by Nicholas Wilson, fix and tests provided by
Manuel Pégourié-Gonnard65eefc82015-10-23 14:08:48 +02002384 Janos Follath. #280 and #319
Manuel Pégourié-Gonnard41048642015-10-09 14:47:17 +01002385
Manuel Pégourié-Gonnard2b624e92015-10-30 09:35:03 +01002386Features
2387 * Experimental support for EC J-PAKE as defined in Thread 1.0.0.
2388 Disabled by default as the specification might still change.
Manuel Pégourié-Gonnard41048642015-10-09 14:47:17 +01002389 * Added a key extraction callback to accees the master secret and key
2390 block. (Potential uses include EAP-TLS and Thread.)
Manuel Pégourié-Gonnarde5f30722015-10-22 17:01:15 +02002391
2392Bugfix
Simon Butcher62aab152015-10-27 16:05:34 +00002393 * Self-signed certificates were not excluded from pathlen counting,
2394 resulting in some valid X.509 being incorrectly rejected. Found and fix
Manuel Pégourié-Gonnard65eefc82015-10-23 14:08:48 +02002395 provided by Janos Follath. #319
2396 * Fix build error with configurations where ECDHE-PSK is the only key
2397 exchange. Found and fix provided by Chris Hammond. #270
Simon Butcher5f7c34b2015-10-27 15:14:55 +00002398 * Fix build error with configurations where RSA, RSA-PSK, ECDH-RSA or
Manuel Pégourié-Gonnard7c5fcdc2015-10-21 14:52:24 +02002399 ECHD-ECDSA if the only key exchange. Multiple reports. #310
2400 * Fixed a bug causing some handshakes to fail due to some non-fatal alerts
Manuel Pégourié-Gonnard66fc0732015-10-21 16:40:29 +02002401 not being properly ignored. Found by mancha and Kasom Koht-arsa, #308
Manuel Pégourié-Gonnardc99dffa2015-11-02 06:00:02 +09002402 * mbedtls_x509_crt_verify(_with_profile)() now also checks the key type and
2403 size/curve against the profile. Before that, there was no way to set a
2404 minimum key size for end-entity certificates with RSA keys. Found by
Simon Butcher5f7c34b2015-10-27 15:14:55 +00002405 Matthew Page of Scannex Electronics Ltd.
Manuel Pégourié-Gonnarde0b2fea2015-10-27 10:24:54 +01002406 * Fix failures in MPI on Sparc(64) due to use of bad assembly code.
2407 Found by Kurt Danielson. #292
2408 * Fix typo in name of the extKeyUsage OID. Found by inestlerode, #314
Manuel Pégourié-Gonnard41048642015-10-09 14:47:17 +01002409 * Fix bug in ASN.1 encoding of booleans that caused generated CA
2410 certificates to be rejected by some applications, including OS X
2411 Keychain. Found and fixed by Jonathan Leroy, Inikup.
Simon Butcher04799a42015-09-29 00:31:09 +01002412
Manuel Pégourié-Gonnardca056c72015-10-05 18:21:34 +01002413Changes
Simon Butcherc48b66b2015-10-05 10:18:17 +01002414 * Improved performance of mbedtls_ecp_muladd() when one of the scalars is 1
2415 or -1.
Simon Butcher5b8d1d62015-10-04 22:06:51 +01002416
2417= mbed TLS 2.1.2 released 2015-10-06
Simon Butcherc48b66b2015-10-05 10:18:17 +01002418
2419Security
Manuel Pégourié-Gonnardd02a1da2015-09-28 18:34:48 +02002420 * Added fix for CVE-2015-5291 to prevent heap corruption due to buffer
2421 overflow of the hostname or session ticket. Found by Guido Vranken,
Simon Butcherc48b66b2015-10-05 10:18:17 +01002422 Intelworks.
Manuel Pégourié-Gonnard58fb4952015-09-28 13:48:04 +02002423 * Fix potential double-free if mbedtls_ssl_set_hs_psk() is called more than
Simon Butcherc48b66b2015-10-05 10:18:17 +01002424 once in the same handhake and mbedtls_ssl_conf_psk() was used.
2425 Found and patch provided by Guido Vranken, Intelworks. Cannot be forced
2426 remotely.
2427 * Fix stack buffer overflow in pkcs12 decryption (used by
Simon Butchera45aa132015-10-05 00:26:36 +01002428 mbedtls_pk_parse_key(file)() when the password is > 129 bytes.
Simon Butcherc48b66b2015-10-05 10:18:17 +01002429 Found by Guido Vranken, Intelworks. Not triggerable remotely.
2430 * Fix potential buffer overflow in mbedtls_mpi_read_string().
2431 Found by Guido Vranken, Intelworks. Not exploitable remotely in the context
2432 of TLS, but might be in other uses. On 32 bit machines, requires reading a
2433 string of close to or larger than 1GB to exploit; on 64 bit machines, would
2434 require reading a string of close to or larger than 2^62 bytes.
Manuel Pégourié-Gonnard24417f02015-09-28 18:09:45 +02002435 * Fix potential random memory allocation in mbedtls_pem_read_buffer()
Simon Butcherfec73a82015-10-05 10:40:31 +01002436 on crafted PEM input data. Found and fix provided by Guido Vranken,
2437 Intelworks. Not triggerable remotely in TLS. Triggerable remotely if you
Manuel Pégourié-Gonnardbc1babb2015-10-02 11:16:47 +02002438 accept PEM data from an untrusted source.
2439 * Fix possible heap buffer overflow in base64_encoded() when the input
2440 buffer is 512MB or larger on 32-bit platforms. Found by Guido Vranken,
Simon Butcher475cf0a2015-10-05 11:57:54 +01002441 Intelworks. Not trigerrable remotely in TLS.
Simon Butcher04799a42015-09-29 00:31:09 +01002442 * Fix potential double-free if mbedtls_conf_psk() is called repeatedly on
Manuel Pégourié-Gonnard04317352015-10-05 12:16:06 +01002443 the same mbedtls_ssl_config object and memory allocation fails. Found by
2444 Guido Vranken, Intelworks. Cannot be forced remotely.
2445 * Fix potential heap buffer overflow in servers that perform client
Simon Butcher7776fc32015-10-05 15:44:18 +01002446 authentication against a crafted CA cert. Cannot be triggered remotely
Manuel Pégourié-Gonnard04317352015-10-05 12:16:06 +01002447 unless you allow third parties to pick trust CAs for client auth.
Simon Butcher04799a42015-09-29 00:31:09 +01002448 Found by Guido Vranken, Intelworks.
2449
2450Bugfix
Simon Butchera12e3c02015-10-01 01:59:33 +01002451 * Fix compile error in net.c with musl libc. Found and patch provided by
2452 zhasha (#278).
Simon Butcher04799a42015-09-29 00:31:09 +01002453 * Fix macroization of 'inline' keyword when building as C++. (#279)
Simon Butcher5624ec82015-09-29 01:06:06 +01002454
Manuel Pégourié-Gonnard4f3368e2015-07-19 15:01:28 +02002455Changes
Manuel Pégourié-Gonnard5f501042015-09-03 20:03:15 +02002456 * Added checking of hostname length in mbedtls_ssl_set_hostname() to ensure
2457 domain names are compliant with RFC 1035.
2458 * Fixed paths for check_config.h in example config files. (Found by bachp)
2459 (#291)
Manuel Pégourié-Gonnardc2ed8022015-09-09 12:15:13 +02002460
2461= mbed TLS 2.1.1 released 2015-09-17
Simon Butcher5b8d1d62015-10-04 22:06:51 +01002462
2463Security
Manuel Pégourié-Gonnardc2ed8022015-09-09 12:15:13 +02002464 * Add countermeasure against Lenstra's RSA-CRT attack for PKCS#1 v1.5
Simon Butchera1a11282015-09-14 21:30:40 +01002465 signatures. (Found by Florian Weimer, Red Hat.)
2466 https://securityblog.redhat.com/2015/09/02/factoring-rsa-keys-with-tls-perfect-forward-secrecy/
Manuel Pégourié-Gonnardf7022d12015-09-16 11:32:18 +02002467 * Fix possible client-side NULL pointer dereference (read) when the client
2468 tries to continue the handshake after it failed (a misuse of the API).
2469 (Found and patch provided by Fabian Foerg, Gotham Digital Science using
Simon Butcherd69f14b2015-09-11 20:00:20 +01002470 afl-fuzz.)
2471
2472Bugfix
Manuel Pégourié-Gonnard14c25742015-09-08 15:12:45 +02002473 * Fix warning when using a 64bit platform. (found by embedthis) (#275)
2474 * Fix off-by-one error in parsing Supported Point Format extension that
2475 caused some handshakes to fail.
2476
2477Changes
2478 * Made X509 profile pointer const in mbedtls_ssl_conf_cert_profile() to allow
2479 use of mbedtls_x509_crt_profile_next. (found by NWilson)
Simon Butcherd69f14b2015-09-11 20:00:20 +01002480 * When a client initiates a reconnect from the same port as a live
Manuel Pégourié-Gonnardc2ed8022015-09-09 12:15:13 +02002481 connection, if cookie verification is available
Manuel Pégourié-Gonnard5f501042015-09-03 20:03:15 +02002482 (MBEDTLS_SSL_DTLS_HELLO_VERIFY defined in config.h, and usable cookie
Manuel Pégourié-Gonnard32da9f62015-07-31 15:52:30 +02002483 callbacks set with mbedtls_ssl_conf_dtls_cookies()), this will be
Manuel Pégourié-Gonnard0a0c22e2015-09-04 14:38:26 +02002484 detected and mbedtls_ssl_read() will return
2485 MBEDTLS_ERR_SSL_CLIENT_RECONNECT - it is then possible to start a new
Manuel Pégourié-Gonnard32da9f62015-07-31 15:52:30 +02002486 handshake with the same context. (See RFC 6347 section 4.2.8.)
Manuel Pégourié-Gonnard4f3368e2015-07-19 15:01:28 +02002487
2488= mbed TLS 2.1.0 released 2015-09-04
Manuel Pégourié-Gonnardbcb04602015-07-19 16:00:04 +02002489
2490Features
Manuel Pégourié-Gonnarda6e5bd52015-07-23 12:14:13 +02002491 * Added support for yotta as a build system.
2492 * Primary open source license changed to Apache 2.0 license.
Manuel Pégourié-Gonnard52a50792015-07-27 10:36:12 +02002493
Manuel Pégourié-Gonnard6f424172015-07-24 16:53:46 +02002494Bugfix
Manuel Pégourié-Gonnard52a50792015-07-27 10:36:12 +02002495 * Fix segfault in the benchmark program when benchmarking DHM.
2496 * Fix build error with CMake and pre-4.5 versions of GCC (found by Hugo
Manuel Pégourié-Gonnarde96ce082015-07-30 22:46:55 +02002497 Leisink).
Manuel Pégourié-Gonnard20064082015-08-03 10:24:05 +02002498 * Fix bug when parsing a ServerHello without extensions (found by David
2499 Sears).
Manuel Pégourié-Gonnard99839932015-08-03 10:34:09 +02002500 * Fix bug in CMake lists that caused libmbedcrypto.a not to be installed
2501 (found by Benoit Lecocq).
Manuel Pégourié-Gonnarde33316c2015-08-07 13:17:23 +02002502 * Fix bug in Makefile that caused libmbedcrypto and libmbedx509 not to be
2503 installed (found by Rawi666).
2504 * Fix compile error with armcc 5 with --gnu option.
Manuel Pégourié-Gonnarded46c432015-08-10 10:17:32 +02002505 * Fix bug in Makefile that caused programs not to be installed correctly
Manuel Pégourié-Gonnardc98204e2015-08-11 04:21:01 +02002506 (found by robotanarchy) (#232).
2507 * Fix bug in Makefile that prevented from installing without building the
Manuel Pégourié-Gonnard1385a282015-08-27 11:30:58 +02002508 tests (found by robotanarchy) (#232).
2509 * Fix missing -static-libgcc when building shared libraries for Windows
2510 with make.
Simon Butcher52754592015-09-03 13:06:01 +01002511 * Fix link error when building shared libraries for Windows with make.
2512 * Fix error when loading libmbedtls.so.
2513 * Fix bug in mbedtls_ssl_conf_default() that caused the default preset to
2514 be always used (found by dcb314) (#235)
2515 * Fix bug in mbedtls_rsa_public() and mbedtls_rsa_private() that could
2516 result trying to unlock an unlocked mutex on invalid input (found by
2517 Fredrik Axelsson) (#257)
Manuel Pégourié-Gonnard52a50792015-07-27 10:36:12 +02002518 * Fix -Wshadow warnings (found by hnrkp) (#240)
Manuel Pégourié-Gonnard052d10c2015-07-31 11:09:59 +02002519 * Fix memory corruption on client with overlong PSK identity, around
2520 SSL_MAX_CONTENT_LEN or higher - not triggerrable remotely (found by
Manuel Pégourié-Gonnard32da9f62015-07-31 15:52:30 +02002521 Aleksandrs Saveljevs) (#238)
2522 * Fix unused function warning when using MBEDTLS_MDx_ALT or
2523 MBEDTLS_SHAxxx_ALT (found by Henrik) (#239)
Manuel Pégourié-Gonnardb2beb842015-09-01 19:37:32 +02002524 * Fix memory corruption in pkey programs (found by yankuncheng) (#210)
2525
2526Changes
Simon Butcher52754592015-09-03 13:06:01 +01002527 * The PEM parser now accepts a trailing space at end of lines (#226).
2528 * It is now possible to #include a user-provided configuration file at the
2529 end of the default config.h by defining MBEDTLS_USER_CONFIG_FILE on the
2530 compiler's command line.
Manuel Pégourié-Gonnard4f3368e2015-07-19 15:01:28 +02002531 * When verifying a certificate chain, if an intermediate certificate is
Paul Bakker4cb87f42015-07-10 14:09:43 +01002532 trusted, no later cert is checked. (suggested by hannes-landeholm)
Paul Bakker9c5898f2015-02-16 16:18:33 +01002533 (#220).
Manuel Pégourié-Gonnardf4acfe12014-09-17 10:56:54 +02002534 * Prepend a "thread identifier" to debug messages (issue pointed out by
Manuel Pégourié-Gonnard866eb472015-05-25 19:41:37 +02002535 Hugo Leisink) (#210).
2536 * Add mbedtls_ssl_get_max_frag_len() to query the current maximum fragment
2537 length.
2538
2539= mbed TLS 2.0.0 released 2015-07-13
2540
Manuel Pégourié-Gonnard88d37852015-06-17 14:26:49 +02002541Features
2542 * Support for DTLS 1.0 and 1.2 (RFC 6347).
2543 * Ability to override core functions from MDx, SHAx, AES and DES modules
2544 with custom implementation (eg hardware accelerated), complementing the
2545 ability to override the whole module.
2546 * New server-side implementation of session tickets that rotate keys to
Manuel Pégourié-Gonnard4d7fbbf2014-10-15 15:40:55 +02002547 preserve forward secrecy, and allows sharing across multiple contexts.
Manuel Pégourié-Gonnardf4acfe12014-09-17 10:56:54 +02002548 * Added a concept of X.509 cerificate verification profile that controls
Manuel Pégourié-Gonnarda25ffc32015-06-25 12:01:16 +02002549 which algorithms and key sizes (curves for ECDSA) are acceptable.
2550 * Expanded configurability of security parameters in the SSL module with
Manuel Pégourié-Gonnardd54e6172015-04-28 17:56:12 +02002551 mbedtls_ssl_conf_dhm_min_bitlen() and mbedtls_ssl_conf_sig_hashes().
Manuel Pégourié-Gonnard6e088f92015-05-06 17:53:08 +01002552 * Introduced a concept of presets for SSL security-relevant configuration
Manuel Pégourié-Gonnardd54e6172015-04-28 17:56:12 +02002553 parameters.
Manuel Pégourié-Gonnard6e088f92015-05-06 17:53:08 +01002554
Manuel Pégourié-Gonnard898e0aa2015-06-18 15:28:12 +02002555API Changes
Manuel Pégourié-Gonnard797f48a2015-06-18 15:45:05 +02002556 * The library has been split into libmbedcrypto, libmbedx509, libmbedtls.
2557 You now need to link to all of them if you use TLS for example.
2558 * All public identifiers moved to the mbedtls_* or MBEDTLS_* namespace.
Manuel Pégourié-Gonnardd54e6172015-04-28 17:56:12 +02002559 Some names have been further changed to make them more consistent.
Antonin Décimo36e89b52019-01-23 15:24:37 +01002560 Migration helpers scripts/rename.pl and include/mbedtls/compat-1.3.h are
Manuel Pégourié-Gonnardf4acfe12014-09-17 10:56:54 +02002561 provided. Full list of renamings in scripts/data_files/rename-1.3-2.0.txt
Manuel Pégourié-Gonnarde6bdc442014-09-17 11:34:57 +02002562 * Renamings of fields inside structures, not covered by the previous list:
Manuel Pégourié-Gonnard6963ff02015-04-28 18:02:54 +02002563 mbedtls_cipher_info_t.key_length -> key_bitlen
Manuel Pégourié-Gonnard2f84e972015-05-11 09:52:24 +02002564 mbedtls_cipher_context_t.key_length -> key_bitlen
Manuel Pégourié-Gonnard06939ce2015-05-11 11:25:46 +02002565 mbedtls_ecp_curve_info.size -> bit_size
Manuel Pégourié-Gonnard41d479e2015-04-29 00:48:22 +02002566 * Headers are now found in the 'mbedtls' directory (previously 'polarssl').
Manuel Pégourié-Gonnard6963ff02015-04-28 18:02:54 +02002567 * The following _init() functions that could return errors have
Manuel Pégourié-Gonnardc34e8dd2015-04-28 21:42:17 +02002568 been split into an _init() that returns void and another function that
Manuel Pégourié-Gonnard2f84e972015-05-11 09:52:24 +02002569 should generally be the first function called on this context after init:
2570 mbedtls_ssl_init() -> mbedtls_ssl_setup()
Manuel Pégourié-Gonnard06939ce2015-05-11 11:25:46 +02002571 mbedtls_ccm_init() -> mbedtls_ccm_setkey()
2572 mbedtls_gcm_init() -> mbedtls_gcm_setkey()
Manuel Pégourié-Gonnard96936682015-06-02 15:14:15 +01002573 mbedtls_hmac_drbg_init() -> mbedtls_hmac_drbg_seed(_buf)()
Manuel Pégourié-Gonnardcaace652015-05-11 09:57:11 +02002574 mbedtls_ctr_drbg_init() -> mbedtls_ctr_drbg_seed()
Tillmann Karras588ad502015-09-25 04:27:22 +02002575 Note that for mbedtls_ssl_setup(), you need to be done setting up the
Manuel Pégourié-Gonnardcaace652015-05-11 09:57:11 +02002576 ssl_config structure before calling it.
2577 * Most ssl_set_xxx() functions (all except ssl_set_bio(), ssl_set_hostname(),
2578 ssl_set_session() and ssl_set_client_transport_id(), plus
2579 ssl_legacy_renegotiation()) have been renamed to mbedtls_ssl_conf_xxx()
Manuel Pégourié-Gonnard9a1a4d62015-05-11 10:35:53 +02002580 (see rename.pl and compat-1.3.h above) and their first argument's type
2581 changed from ssl_context to ssl_config.
Manuel Pégourié-Gonnard96936682015-06-02 15:14:15 +01002582 * ssl_set_bio() changed signature (contexts merged, order switched, one
2583 additional callback for read-with-timeout).
Manuel Pégourié-Gonnard9a1a4d62015-05-11 10:35:53 +02002584 * The following functions have been introduced and must be used in callback
2585 implementations (SNI, PSK) instead of their *conf counterparts:
2586 mbedtls_ssl_set_hs_own_cert()
2587 mbedtls_ssl_set_hs_ca_chain()
2588 mbedtls_ssl_set_hs_psk()
Manuel Pégourié-Gonnardcaace652015-05-11 09:57:11 +02002589 * mbedtls_ssl_conf_ca_chain() lost its last argument (peer_cn), now set
Manuel Pégourié-Gonnardbc2b7712015-05-06 11:14:19 +01002590 using mbedtls_ssl_set_hostname().
Manuel Pégourié-Gonnard01e5e8c2015-05-11 10:11:56 +02002591 * mbedtls_ssl_conf_session_cache() changed prototype (only one context
Manuel Pégourié-Gonnard5cb33082015-05-06 18:06:26 +01002592 pointer, parameters reordered).
Manuel Pégourié-Gonnard866eb472015-05-25 19:41:37 +02002593 * On server, mbedtls_ssl_conf_session_tickets_cb() must now be used in
2594 place of mbedtls_ssl_conf_session_tickets() to enable session tickets.
Manuel Pégourié-Gonnardfd474232015-06-23 16:34:24 +02002595 * The SSL debug callback gained two new arguments (file name, line number).
2596 * Debug modes were removed.
Manuel Pégourié-Gonnard01e5e8c2015-05-11 10:11:56 +02002597 * mbedtls_ssl_conf_truncated_hmac() now returns void.
Manuel Pégourié-Gonnard96936682015-06-02 15:14:15 +01002598 * mbedtls_memory_buffer_alloc_init() now returns void.
Manuel Pégourié-Gonnarde6ef16f2015-05-11 19:54:43 +02002599 * X.509 verification flags are now an uint32_t. Affect the signature of:
2600 mbedtls_ssl_get_verify_result()
2601 mbedtls_x509_ctr_verify_info()
Manuel Pégourié-Gonnard96936682015-06-02 15:14:15 +01002602 mbedtls_x509_crt_verify() (flags, f_vrfy -> needs to be updated)
Manuel Pégourié-Gonnarde6ef16f2015-05-11 19:54:43 +02002603 mbedtls_ssl_conf_verify() (f_vrfy -> needs to be updated)
Manuel Pégourié-Gonnardbc6ff232015-06-02 16:33:08 +01002604 * The following functions changed prototype to avoid an in-out length
2605 parameter:
2606 mbedtls_base64_encode()
2607 mbedtls_base64_decode()
2608 mbedtls_mpi_write_string()
2609 mbedtls_dhm_calc_secret()
Manuel Pégourié-Gonnard91895852015-06-30 13:34:45 +02002610 * In the NET module, all "int" and "int *" arguments for file descriptors
2611 changed type to "mbedtls_net_context *".
Manuel Pégourié-Gonnard0b104b02015-05-14 21:52:40 +02002612 * net_accept() gained new arguments for the size of the client_ip buffer.
Manuel Pégourié-Gonnard8f5fd312015-04-24 14:42:34 +02002613 * In the threading layer, mbedtls_mutex_init() and mbedtls_mutex_free() now
2614 return void.
Antonin Décimo36e89b52019-01-23 15:24:37 +01002615 * ecdsa_write_signature() gained an additional md_alg argument and
Manuel Pégourié-Gonnarddfdcac92015-03-31 11:41:42 +02002616 ecdsa_write_signature_det() was deprecated.
Manuel Pégourié-Gonnardb8cfe3f2015-03-31 11:04:45 +02002617 * pk_sign() no longer accepts md_alg == POLARSSL_MD_NONE with ECDSA.
Manuel Pégourié-Gonnard1cd10ad2015-06-23 11:07:37 +02002618 * Last argument of x509_crt_check_key_usage() and
2619 mbedtls_x509write_crt_set_key_usage() changed from int to unsigned.
Manuel Pégourié-Gonnarda958d692015-03-27 10:23:53 +01002620 * test_ca_list (from certs.h) is renamed to test_cas_pem and is only
2621 available if POLARSSL_PEM_PARSE_C is defined (it never worked without).
2622 * Test certificates in certs.c are no longer guaranteed to be nul-terminated
Manuel Pégourié-Gonnard75f90102015-03-27 09:56:18 +01002623 strings; use the new *_len variables instead of strlen().
Manuel Pégourié-Gonnard43b37cb2015-05-12 11:20:10 +02002624 * Functions mbedtls_x509_xxx_parse(), mbedtls_pk_parse_key(),
2625 mbedtls_pk_parse_public_key() and mbedtls_dhm_parse_dhm() now expect the
2626 length parameter to include the terminating null byte for PEM input.
Manuel Pégourié-Gonnard35f1d7f2015-03-19 12:42:40 +00002627 * Signature of mpi_mul_mpi() changed to make the last argument unsigned
Manuel Pégourié-Gonnard5b9e5b12015-05-26 17:46:09 +02002628 * calloc() is now used instead of malloc() everywhere. API of platform
2629 layer and the memory_buffer_alloc module changed accordingly.
Manuel Pégourié-Gonnard1b8de572015-05-27 16:49:37 +02002630 (Thanks to Mansour Moufid for helping with the replacement.)
Manuel Pégourié-Gonnard88bdb0b2015-03-10 14:02:33 +00002631 * Change SSL_DISABLE_RENEGOTIATION config.h flag to SSL_RENEGOTIATION
2632 (support for renegotiation now needs explicit enabling in config.h).
Manuel Pégourié-Gonnard60c793b2015-06-18 20:52:58 +02002633 * Split MBEDTLS_HAVE_TIME into MBEDTLS_HAVE_TIME and MBEDTLS_HAVE_TIME_DATE
2634 in config.h
Manuel Pégourié-Gonnardf4acfe12014-09-17 10:56:54 +02002635 * net_connect() and net_bind() have a new 'proto' argument to choose
2636 between TCP and UDP, using the macros NET_PROTO_TCP or NET_PROTO_UDP.
Manuel Pégourié-Gonnardc0d74942015-06-23 12:30:57 +02002637 Their 'port' argument type is changed to a string.
Manuel Pégourié-Gonnardd54e6172015-04-28 17:56:12 +02002638 * Some constness fixes
2639
2640Removals
Manuel Pégourié-Gonnardaff37e52015-05-11 18:11:57 +02002641 * Removed mbedtls_ecp_group_read_string(). Only named groups are supported.
Manuel Pégourié-Gonnard56cc88a2015-05-11 18:40:45 +02002642 * Removed mbedtls_ecp_sub() and mbedtls_ecp_add(), use
2643 mbedtls_ecp_muladd().
Manuel Pégourié-Gonnard41b9c2b2015-05-28 14:56:20 +02002644 * Removed individual mdX_hmac, shaX_hmac, mdX_file and shaX_file functions
2645 (use generic functions from md.h)
2646 * Removed mbedtls_timing_msleep(). Use mbedtls_net_usleep() or a custom
Manuel Pégourié-Gonnarda63bc942015-05-14 18:22:47 +02002647 waiting function.
Manuel Pégourié-Gonnard53585ee2015-06-25 08:52:25 +02002648 * Removed test DHM parameters from the test certs module.
Manuel Pégourié-Gonnardd54e6172015-04-28 17:56:12 +02002649 * Removed the PBKDF2 module (use PKCS5).
2650 * Removed POLARSSL_ERROR_STRERROR_BC (use mbedtls_strerror()).
2651 * Removed compat-1.2.h (helper for migrating from 1.2 to 1.3).
2652 * Removed openssl.h (very partial OpenSSL compatibility layer).
2653 * Configuration options POLARSSL_HAVE_LONGLONG was removed (now always on).
2654 * Configuration options POLARSSL_HAVE_INT8 and POLARSSL_HAVE_INT16 have
2655 been removed (compiler is required to support 32-bit operations).
2656 * Configuration option POLARSSL_HAVE_IPV6 was removed (always enabled).
2657 * Removed test program o_p_test, the script compat.sh does more.
2658 * Removed test program ssl_test, superseded by ssl-opt.sh.
2659 * Removed helper script active-config.pl
Manuel Pégourié-Gonnard1022fed2015-03-27 16:30:47 +01002660
2661New deprecations
2662 * md_init_ctx() is deprecated in favour of md_setup(), that adds a third
2663 argument (allowing memory savings if HMAC is not used)
Manuel Pégourié-Gonnardf4acfe12014-09-17 10:56:54 +02002664
Manuel Pégourié-Gonnard1022fed2015-03-27 16:30:47 +01002665Semi-API changes (technically public, morally private)
Manuel Pégourié-Gonnard50518f42015-05-26 11:04:15 +02002666 * Renamed a few headers to include _internal in the name. Those headers are
2667 not supposed to be included by users.
Manuel Pégourié-Gonnardc89d6cf2015-03-31 14:43:19 +02002668 * Changed md_info_t into an opaque structure (use md_get_xxx() accessors).
2669 * Changed pk_info_t into an opaque structure.
Manuel Pégourié-Gonnard50518f42015-05-26 11:04:15 +02002670 * Changed cipher_base_t into an opaque structure.
2671 * Removed sig_oid2 and rename sig_oid1 to sig_oid in x509_crt and x509_crl.
Manuel Pégourié-Gonnard1d0ca1a2015-03-27 16:50:00 +01002672 * x509_crt.key_usage changed from unsigned char to unsigned int.
Manuel Pégourié-Gonnard50518f42015-05-26 11:04:15 +02002673 * Removed r and s from ecdsa_context
2674 * Removed mode from des_context and des3_context
Manuel Pégourié-Gonnard1022fed2015-03-27 16:30:47 +01002675
Manuel Pégourié-Gonnard606df8c2015-03-27 17:13:17 +01002676Default behavior changes
Manuel Pégourié-Gonnard8c8be1e2015-03-31 14:21:11 +02002677 * The default minimum TLS version is now TLS 1.0.
Manuel Pégourié-Gonnard606df8c2015-03-27 17:13:17 +01002678 * RC4 is now blacklisted by default in the SSL/TLS layer, and excluded from the
2679 default ciphersuite list returned by ssl_list_ciphersuites()
Manuel Pégourié-Gonnard88bdb0b2015-03-10 14:02:33 +00002680 * Support for receiving SSLv2 ClientHello is now disabled by default at
2681 compile time.
Manuel Pégourié-Gonnardfa44f202015-03-27 17:52:25 +01002682 * The default authmode for SSL/TLS clients is now REQUIRED.
Manuel Pégourié-Gonnard348bcb32015-03-31 14:01:33 +02002683 * Support for RSA_ALT contexts in the PK layer is now optional. Since is is
2684 enabled in the default configuration, this is only noticeable if using a
2685 custom config.h
Manuel Pégourié-Gonnard1028b742015-05-06 17:33:07 +01002686 * Default DHM parameters server-side upgraded from 1024 to 2048 bits.
Manuel Pégourié-Gonnard88d37852015-06-17 14:26:49 +02002687 * A minimum RSA key size of 2048 bits is now enforced during ceritificate
2688 chain verification.
Manuel Pégourié-Gonnard662c6e82015-05-06 17:39:23 +01002689 * Negotiation of truncated HMAC is now disabled by default on server too.
Manuel Pégourié-Gonnardcb46fd82015-05-28 17:06:07 +02002690 * The following functions are now case-sensitive:
2691 mbedtls_cipher_info_from_string()
2692 mbedtls_ecp_curve_info_from_name()
2693 mbedtls_md_info_from_string()
2694 mbedtls_ssl_ciphersuite_from_string()
2695 mbedtls_version_check_feature()
Manuel Pégourié-Gonnard606df8c2015-03-27 17:13:17 +01002696
Manuel Pégourié-Gonnardaff37e52015-05-11 18:11:57 +02002697Requirement changes
Manuel Pégourié-Gonnardab229102015-04-15 11:53:16 +02002698 * The minimum MSVC version required is now 2010 (better C99 support).
Manuel Pégourié-Gonnardd4f04db2015-05-14 18:58:17 +02002699 * The NET layer now unconditionnaly relies on getaddrinfo() and select().
Manuel Pégourié-Gonnard3a3ae3d2015-05-06 17:08:54 +01002700 * Compiler is required to support C99 types such as long long and uint32_t.
Manuel Pégourié-Gonnard88bdb0b2015-03-10 14:02:33 +00002701
Manuel Pégourié-Gonnard01e5e8c2015-05-11 10:11:56 +02002702API changes from the 1.4 preview branch
Manuel Pégourié-Gonnard1b511f92015-05-06 15:54:23 +01002703 * ssl_set_bio_timeout() was removed, split into mbedtls_ssl_set_bio() with
2704 new prototype, and mbedtls_ssl_set_read_timeout().
Manuel Pégourié-Gonnard01e5e8c2015-05-11 10:11:56 +02002705 * The following functions now return void:
2706 mbedtls_ssl_conf_transport()
2707 mbedtls_ssl_conf_max_version()
2708 mbedtls_ssl_conf_min_version()
Manuel Pégourié-Gonnard0c890352015-05-13 10:28:41 +02002709 * DTLS no longer hard-depends on TIMING_C, but uses a callback interface
2710 instead, see mbedtls_ssl_set_timer_cb(), with the Timing module providing
2711 an example implementation, see mbedtls_timing_delay_context and
2712 mbedtls_timing_set/get_delay().
Manuel Pégourié-Gonnardabc729e2015-07-01 01:28:24 +02002713 * With UDP sockets, it is no longer necessary to call net_bind() again
2714 after a successful net_accept().
Manuel Pégourié-Gonnard1b511f92015-05-06 15:54:23 +01002715
Manuel Pégourié-Gonnard0a4fb092015-05-07 12:50:31 +01002716Changes
2717 * mbedtls_ctr_drbg_random() and mbedtls_hmac_drbg_random() are now
2718 thread-safe if MBEDTLS_THREADING_C is enabled.
Manuel Pégourié-Gonnard88d37852015-06-17 14:26:49 +02002719 * Reduced ROM fooprint of SHA-256 and added an option to reduce it even
2720 more (at the expense of performance) MBEDTLS_SHA256_SMALLER.
Manuel Pégourié-Gonnard0a4fb092015-05-07 12:50:31 +01002721
Manuel Pégourié-Gonnard7bf19762015-02-10 10:09:37 +00002722= mbed TLS 1.3 branch
2723
2724Security
Manuel Pégourié-Gonnard9f982512015-04-17 16:55:53 +02002725 * With authmode set to SSL_VERIFY_OPTIONAL, verification of keyUsage and
Manuel Pégourié-Gonnarde6efa6f2015-04-20 11:01:48 +01002726 extendedKeyUsage on the leaf certificate was lost (results not accessible
2727 via ssl_get_verify_results()).
Manuel Pégourié-Gonnard47fede02015-04-29 01:35:48 +02002728 * Add countermeasure against "Lucky 13 strikes back" cache-based attack,
2729 https://dl.acm.org/citation.cfm?id=2714625
Manuel Pégourié-Gonnard7bf19762015-02-10 10:09:37 +00002730
2731Features
Manuel Pégourié-Gonnard154b00b2015-05-11 21:05:36 +02002732 * Improve ECC performance by using more efficient doubling formulas
2733 (contributed by Peter Dettman).
Manuel Pégourié-Gonnard39a183a2015-04-17 16:14:32 +02002734 * Add x509_crt_verify_info() to display certificate verification results.
Manuel Pégourié-Gonnard95f00892015-04-15 14:12:05 +02002735 * Add support for reading DH parameters with privateValueLength included
Manuel Pégourié-Gonnardba334202015-04-17 16:16:52 +02002736 (contributed by Daniel Kahn Gillmor).
Manuel Pégourié-Gonnard39ead3e2015-03-27 13:09:21 +01002737 * Add support for bit strings in X.509 names (request by Fredrik Axelsson).
2738 * Add support for id-at-uniqueIdentifier in X.509 names.
Manuel Pégourié-Gonnard00c22012015-02-13 15:14:10 +00002739 * Add support for overriding snprintf() (except on Windows) and exit() in
2740 the platform layer.
2741 * Add an option to use macros instead of function pointers in the platform
2742 layer (helps get rid of unwanted references).
Manuel Pégourié-Gonnardea0184b2015-02-16 15:42:16 +00002743 * Improved Makefiles for Windows targets by fixing library targets and making
2744 cross-compilation easier (thanks to Alon Bar-Lev).
Manuel Pégourié-Gonnardad350ed2015-02-16 17:45:35 +00002745 * The benchmark program also prints heap usage for public-key primitives
2746 if POLARSSL_MEMORY_BUFFER_ALLOC_C and POLARSSL_MEMORY_DEBUG are defined.
2747 * New script ecc-heap.sh helps measuring the impact of ECC parameters on
2748 speed and RAM (heap only for now) usage.
2749 * New script memory.sh helps measuring the ROM and RAM requirements of two
2750 reduced configurations (PSK-CCM and NSA suite B).
Manuel Pégourié-Gonnard8c3f0f42015-04-09 14:10:26 +02002751 * Add config flag POLARSSL_DEPRECATED_WARNING (off by default) to produce
Manuel Pégourié-Gonnardf7dbedb2015-03-23 14:20:04 +01002752 warnings on use of deprecated functions (with GCC and Clang only).
Manuel Pégourié-Gonnard8c3f0f42015-04-09 14:10:26 +02002753 * Add config flag POLARSSL_DEPRECATED_REMOVED (off by default) to produce
Manuel Pégourié-Gonnardf7dbedb2015-03-23 14:20:04 +01002754 errors on use of deprecated functions.
Manuel Pégourié-Gonnard7bf19762015-02-10 10:09:37 +00002755
2756Bugfix
Manuel Pégourié-Gonnarddccb80b2015-06-03 10:20:33 +01002757 * Fix compile errors with PLATFORM_NO_STD_FUNCTIONS.
Manuel Pégourié-Gonnardf2ec5052015-06-03 09:50:07 +01002758 * Fix compile error with PLATFORM_EXIT_ALT (thanks to Rafał Przywara).
Manuel Pégourié-Gonnard3e87a9f2015-06-03 09:48:26 +01002759 * Fix bug in entropy.c when THREADING_C is also enabled that caused
2760 entropy_free() to crash (thanks to Rafał Przywara).
Manuel Pégourié-Gonnard2a1524c2015-05-27 17:59:46 +02002761 * Fix memory leak when gcm_setkey() and ccm_setkey() are used more than
2762 once on the same context.
Manuel Pégourié-Gonnardfa950c92015-04-30 12:50:22 +02002763 * Fix bug in ssl_mail_client when password is longer that username (found
2764 by Bruno Pape).
Manuel Pégourié-Gonnard159c5242015-04-30 11:15:22 +02002765 * Fix undefined behaviour (memcmp( NULL, NULL, 0 );) in X.509 modules
2766 (detected by Clang's 3.6 UBSan).
Manuel Pégourié-Gonnard770b5e12015-04-29 17:02:01 +02002767 * mpi_size() and mpi_msb() would segfault when called on an mpi that is
2768 initialized but not set (found by pravic).
Manuel Pégourié-Gonnardd97828e2015-04-29 14:03:28 +02002769 * Fix detection of support for getrandom() on Linux (reported by syzzer) by
2770 doing it at runtime (using uname) rather that compile time.
Manuel Pégourié-Gonnardf5203e02015-04-29 09:58:00 +02002771 * Fix handling of symlinks by "make install" (found by Gaël PORTAY).
Manuel Pégourié-Gonnarda2fce212015-04-15 19:09:03 +02002772 * Fix potential NULL pointer dereference (not trigerrable remotely) when
2773 ssl_write() is called before the handshake is finished (introduced in
2774 1.3.10) (first reported by Martin Blumenstingl).
Manuel Pégourié-Gonnard924cd102015-04-14 11:18:04 +02002775 * Fix bug in pk_parse_key() that caused some valid private EC keys to be
2776 rejected.
Manuel Pégourié-Gonnardcf201202015-04-02 10:46:55 +01002777 * Fix bug in Via Padlock support (found by Nikos Mavrogiannopoulos).
Manuel Pégourié-Gonnard88fca3e2015-03-27 15:06:07 +01002778 * Fix thread safety bug in RSA operations (found by Fredrik Axelsson).
Manuel Pégourié-Gonnard38433532015-02-11 11:35:58 +00002779 * Fix hardclock() (only used in the benchmarking program) with some
2780 versions of mingw64 (found by kxjhlele).
Manuel Pégourié-Gonnarddda52132015-02-11 11:36:31 +00002781 * Fix warnings from mingw64 in timing.c (found by kxjklele).
Manuel Pégourié-Gonnard6fdc4ca2015-02-13 17:15:18 +00002782 * Fix potential unintended sign extension in asn1_get_len() on 64-bit
2783 platforms.
Manuel Pégourié-Gonnarddf4e4402015-02-18 10:11:06 +00002784 * Fix potential memory leak in ssl_set_psk() (found by Mansour Moufid).
Manuel Pégourié-Gonnard51bccd32015-03-10 16:09:08 +00002785 * Fix compile error when POLARSSL_SSL_DISABLE_RENEGOTATION and
2786 POLARSSL_SSL_SSESSION_TICKETS where both enabled in config.h (introduced
2787 in 1.3.10).
Manuel Pégourié-Gonnard1a901472015-03-10 16:12:29 +00002788 * Add missing extern "C" guard in aesni.h (reported by amir zamani).
Manuel Pégourié-Gonnard0878a0d2015-03-31 15:13:29 +02002789 * Add missing dependency on SHA-256 in some x509 programs (reported by
2790 Gergely Budai).
Manuel Pégourié-Gonnard07ec1dd2015-04-03 17:26:50 +02002791 * Fix bug related to ssl_set_curves(): the client didn't check that the
2792 curve picked by the server was actually allowed.
Manuel Pégourié-Gonnard7bf19762015-02-10 10:09:37 +00002793
2794Changes
Manuel Pégourié-Gonnard12a8b662015-04-15 14:20:14 +02002795 * Remove bias in mpi_gen_prime (contributed by Pascal Junod).
2796 * Remove potential sources of timing variations (some contributed by Pascal
2797 Junod).
Manuel Pégourié-Gonnard23ce09b2015-04-09 14:51:51 +02002798 * Options POLARSSL_HAVE_INT8 and POLARSSL_HAVE_INT16 are deprecated.
Manuel Pégourié-Gonnarda98af5e2015-04-09 14:40:46 +02002799 * Enabling POLARSSL_NET_C without POLARSSL_HAVE_IPV6 is deprecated.
Manuel Pégourié-Gonnard8c3f0f42015-04-09 14:10:26 +02002800 * compat-1.2.h and openssl.h are deprecated.
Manuel Pégourié-Gonnard0645bfa2015-04-15 11:14:22 +02002801 * Adjusting/overriding CFLAGS and LDFLAGS with the make build system is now
Manuel Pégourié-Gonnard40f315a2015-03-13 13:49:26 +00002802 more flexible (warning: OFLAGS is not used any more) (see the README)
2803 (contributed by Alon Bar-Lev).
Manuel Pégourié-Gonnard0645bfa2015-04-15 11:14:22 +02002804 * ssl_set_own_cert() no longer calls pk_check_pair() since the
Manuel Pégourié-Gonnardf427f882015-03-10 15:35:29 +00002805 performance impact was bad for some users (this was introduced in 1.3.10).
Manuel Pégourié-Gonnard6f60cd82015-02-10 10:47:03 +00002806 * Move from SHA-1 to SHA-256 in example programs using signatures
2807 (suggested by Thorsten Mühlfelder).
Manuel Pégourié-Gonnard677af932015-02-10 11:41:57 +00002808 * Remove some unneeded inclusions of header files from the standard library
2809 "minimize" others (eg use stddef.h if only size_t is needed).
2810 * Change #include lines in test files to use double quotes instead of angle
2811 brackets for uniformity with the rest of the code.
Manuel Pégourié-Gonnard00c22012015-02-13 15:14:10 +00002812 * Remove dependency on sscanf() in X.509 parsing modules.
Manuel Pégourié-Gonnard178f9d62014-10-20 14:56:56 +02002813
Paul Bakkerdaae3b72015-02-08 15:49:54 +01002814= mbed TLS 1.3.10 released 2015-02-09
Manuel Pégourié-Gonnard547ff662014-11-26 15:42:16 +01002815Security
2816 * NULL pointer dereference in the buffer-based allocator when the buffer is
Manuel Pégourié-Gonnardee7d5992015-01-28 14:02:38 +00002817 full and polarssl_free() is called (found by Mark Hasemeyer)
Manuel Pégourié-Gonnard547ff662014-11-26 15:42:16 +01002818 (only possible if POLARSSL_MEMORY_BUFFER_ALLOC_C is enabled, which it is
2819 not by default).
Manuel Pégourié-Gonnard0369a522014-11-11 22:17:26 +01002820 * Fix remotely-triggerable uninitialised pointer dereference caused by
Manuel Pégourié-Gonnardd6814432014-11-12 01:25:31 +01002821 crafted X.509 certificate (TLS server is not affected if it doesn't ask for a
Manuel Pégourié-Gonnard0369a522014-11-11 22:17:26 +01002822 client certificate) (found using Codenomicon Defensics).
Manuel Pégourié-Gonnardb1340602014-11-11 23:11:16 +01002823 * Fix remotely-triggerable memory leak caused by crafted X.509 certificates
Manuel Pégourié-Gonnardd6814432014-11-12 01:25:31 +01002824 (TLS server is not affected if it doesn't ask for a client certificate)
2825 (found using Codenomicon Defensics).
2826 * Fix potential stack overflow while parsing crafted X.509 certificates
2827 (TLS server is not affected if it doesn't ask for a client certificate)
Manuel Pégourié-Gonnardb1340602014-11-11 23:11:16 +01002828 (found using Codenomicon Defensics).
Manuel Pégourié-Gonnard6674cce2015-02-06 10:30:58 +00002829 * Fix timing difference that could theoretically lead to a
2830 Bleichenbacher-style attack in the RSA and RSA-PSK key exchanges
2831 (reported by Sebastian Schinzel).
Manuel Pégourié-Gonnard0369a522014-11-11 22:17:26 +01002832
Manuel Pégourié-Gonnardde171252014-11-08 17:58:24 +01002833Features
Manuel Pégourié-Gonnardd1a878c2015-01-14 16:59:23 +01002834 * Add support for FALLBACK_SCSV (draft-ietf-tls-downgrade-scsv).
2835 * Add support for Extended Master Secret (draft-ietf-tls-session-hash).
2836 * Add support for Encrypt-then-MAC (RFC 7366).
Manuel Pégourié-Gonnardde171252014-11-08 17:58:24 +01002837 * Add function pk_check_pair() to test if public and private keys match.
Manuel Pégourié-Gonnard426d4ae2014-11-19 16:58:28 +01002838 * Add x509_crl_parse_der().
Manuel Pégourié-Gonnardfd6c85c2014-11-20 16:34:20 +01002839 * Add compile-time option POLARSSL_X509_MAX_INTERMEDIATE_CA to limit the
2840 length of an X.509 verification chain.
Manuel Pégourié-Gonnardfa423882014-11-04 19:57:55 +01002841 * Support for renegotiation can now be disabled at compile-time
Manuel Pégourié-Gonnard3ff78232015-01-08 11:15:09 +01002842 * Support for 1/n-1 record splitting, a countermeasure against BEAST.
Paul Bakker6152b022015-04-14 15:00:09 +02002843 * Certificate selection based on signature hash, preferring SHA-1 over SHA-2
Manuel Pégourié-Gonnarddf331a52015-01-08 16:43:07 +01002844 for pre-1.2 clients when multiple certificates are available.
Manuel Pégourié-Gonnard18292452015-01-09 14:34:13 +01002845 * Add support for getrandom() syscall on recent Linux kernels with Glibc or
2846 a compatible enough libc (eg uClibc).
Manuel Pégourié-Gonnardd1a878c2015-01-14 16:59:23 +01002847 * Add ssl_set_arc4_support() to make it easier to disable RC4 at runtime
Manuel Pégourié-Gonnardbd47a582015-01-12 13:43:29 +01002848 while using the default ciphersuite list.
Manuel Pégourié-Gonnard607d6632015-01-26 11:17:20 +00002849 * Added new error codes and debug messages about selection of
2850 ciphersuite/certificate.
Manuel Pégourié-Gonnard547ff662014-11-26 15:42:16 +01002851
Manuel Pégourié-Gonnard5cb4b312014-11-25 17:41:50 +01002852Bugfix
2853 * Stack buffer overflow if ctr_drbg_update() is called with too large
2854 add_len (found by Jean-Philippe Aumasson) (not triggerable remotely).
Manuel Pégourié-Gonnard5dd28ea2014-11-27 13:57:42 +01002855 * Possible buffer overflow of length at most POLARSSL_MEMORY_ALIGN_MULTIPLE
2856 if memory_buffer_alloc_init() was called with buf not aligned and len not
Manuel Pégourié-Gonnardd1a878c2015-01-14 16:59:23 +01002857 a multiple of POLARSSL_MEMORY_ALIGN_MULTIPLE (not triggerable remotely).
2858 * User set CFLAGS were ignored by Cmake with gcc (introduced in 1.3.9, found
Manuel Pégourié-Gonnard54f6e562014-11-10 12:15:39 +01002859 by Julian Ospald).
Manuel Pégourié-Gonnardb31b61b2014-11-10 13:05:43 +01002860 * Fix potential undefined behaviour in Camellia.
Manuel Pégourié-Gonnarde9599792014-11-10 13:43:55 +01002861 * Fix potential failure in ECDSA signatures when POLARSSL_ECP_MAX_BITS is a
2862 multiple of 8 (found by Gergely Budai).
Manuel Pégourié-Gonnardacdb9b92015-01-23 17:50:34 +00002863 * Fix unchecked return code in x509_crt_parse_path() on Windows (found by
2864 Peter Vaskovic).
Manuel Pégourié-Gonnard9d7fc162015-01-19 17:16:54 +00002865 * Fix assembly selection for MIPS64 (thanks to James Cowgill).
Manuel Pégourié-Gonnarde89163c2015-01-23 14:30:57 +00002866 * ssl_get_verify_result() now works even if the handshake was aborted due
2867 to a failed verification (found by Fredrik Axelsson).
Manuel Pégourié-Gonnardf3046ef2015-01-28 14:13:30 +00002868 * Skip writing and parsing signature_algorithm extension if none of the
2869 key exchanges enabled needs certificates. This fixes a possible interop
2870 issue with some servers when a zero-length extension was sent. (Reported
2871 by Peter Dettman.)
Manuel Pégourié-Gonnardaa422b22015-02-02 09:30:45 +00002872 * On a 0-length input, base64_encode() did not correctly set output length
2873 (found by Hendrik van den Boogaard).
Manuel Pégourié-Gonnard54f6e562014-11-10 12:15:39 +01002874
Manuel Pégourié-Gonnardd056ce02014-10-29 22:29:20 +01002875Changes
2876 * Use deterministic nonces for AEAD ciphers in TLS by default (possible to
2877 switch back to random with POLARSSL_SSL_AEAD_RANDOM_IV in config.h).
Manuel Pégourié-Gonnarde10e06d2014-11-06 18:15:12 +01002878 * Blind RSA private operations even when POLARSSL_RSA_NO_CRT is defined.
Manuel Pégourié-Gonnardde171252014-11-08 17:58:24 +01002879 * ssl_set_own_cert() now returns an error on key-certificate mismatch.
Manuel Pégourié-Gonnard8a5e3d42014-11-12 17:47:28 +01002880 * Forbid repeated extensions in X.509 certificates.
Manuel Pégourié-Gonnard8c9223d2014-11-19 10:17:21 +01002881 * debug_print_buf() now prints a text view in addition to hexadecimal.
Manuel Pégourié-Gonnardf01768c2015-01-08 17:06:16 +01002882 * A specific error is now returned when there are ciphersuites in common
2883 but none of them is usable due to external factors such as no certificate
Paul Bakkere522d0f2015-01-14 16:12:48 +01002884 with a suitable (extended)KeyUsage or curve or no PSK set.
Manuel Pégourié-Gonnardd1a878c2015-01-14 16:59:23 +01002885 * It is now possible to disable negotiation of truncated HMAC server-side
Manuel Pégourié-Gonnarde117a8f2015-01-09 12:39:35 +01002886 at runtime with ssl_set_truncated_hmac().
Paul Bakker5b8f7ea2015-01-14 16:26:54 +01002887 * Example programs for SSL client and server now disable SSLv3 by default.
2888 * Example programs for SSL client and server now disable RC4 by default.
Manuel Pégourié-Gonnardc9e04832015-01-19 16:24:23 +00002889 * Use platform.h in all test suites and programs.
Manuel Pégourié-Gonnard5cb4b312014-11-25 17:41:50 +01002890
Paul Bakker9eac4f72014-10-20 13:56:15 +02002891= PolarSSL 1.3.9 released 2014-10-20
Manuel Pégourié-Gonnard480905d2014-08-21 19:38:32 +02002892Security
2893 * Lowest common hash was selected from signature_algorithms extension in
2894 TLS 1.2 (found by Darren Bane) (introduced in 1.3.8).
Manuel Pégourié-Gonnard5d861852014-10-17 12:41:41 +02002895 * Remotely-triggerable memory leak when parsing some X.509 certificates
Paul Bakkerb082bb52014-10-20 13:37:51 +02002896 (server is not affected if it doesn't ask for a client certificate)
2897 (found using Codenomicon Defensics).
Manuel Pégourié-Gonnard43c3b282014-10-17 12:42:11 +02002898 * Remotely-triggerable memory leak when parsing crafted ClientHello
Paul Bakkerb082bb52014-10-20 13:37:51 +02002899 (not affected if ECC support was compiled out) (found using Codenomicon
2900 Defensics).
Manuel Pégourié-Gonnard480905d2014-08-21 19:38:32 +02002901
Paul Bakker8dcb2d72014-08-08 12:22:30 +02002902Bugfix
2903 * Support escaping of commas in x509_string_to_names()
Manuel Pégourié-Gonnard955028f2014-07-12 01:27:34 +02002904 * Fix compile error in ssl_pthread_server (found by Julian Ospald).
Manuel Pégourié-Gonnard9a6b4422014-07-21 13:42:54 +02002905 * Fix net_accept() regarding non-blocking sockets (found by Luca Pesce).
Manuel Pégourié-Gonnard42cc6412014-07-21 13:55:54 +02002906 * Don't print uninitialised buffer in ssl_mail_client (found by Marc Abel).
Manuel Pégourié-Gonnard868c0ee2014-07-21 14:18:17 +02002907 * Fix warnings from Clang's scan-build (contributed by Alfred Klomp).
Manuel Pégourié-Gonnard462906f2014-07-21 17:37:01 +02002908 * Fix compile error in timing.c when POLARSSL_NET_C and POLARSSL_SELFTEST
2909 are defined but not POLARSSL_HAVE_TIME (found by Stephane Di Vito).
Manuel Pégourié-Gonnarddca108e2014-07-21 18:15:22 +02002910 * Remove non-existent file from VS projects (found by Peter Vaskovic).
Manuel Pégourié-Gonnardf26a1e82014-08-19 12:28:50 +02002911 * ssl_read() could return non-application data records on server while
2912 renegotation was pending, and on client when a HelloRequest was received.
Manuel Pégourié-Gonnardf07f4212014-08-15 19:04:47 +02002913 * Server-initiated renegotiation would fail with non-blocking I/O if the
2914 write callback returned WANT_WRITE when requesting renegotiation.
Manuel Pégourié-Gonnarda13500f2014-08-19 16:14:04 +02002915 * ssl_close_notify() could send more than one message in some circumstances
2916 with non-blocking I/O.
Sander Niemeijeref5087d2014-08-16 12:45:52 +02002917 * Fix compiler warnings on iOS (found by Sander Niemeijer).
Paul Bakker5a5fa922014-09-26 14:53:04 +02002918 * x509_crt_parse() did not increase total_failed on PEM error
Manuel Pégourié-Gonnard7f4ed672014-10-14 20:56:02 +02002919 * Fix compile error with armcc in mpi_is_prime()
Manuel Pégourié-Gonnardf7cdbc02014-10-17 17:02:10 +02002920 * Fix potential bad read in parsing ServerHello (found by Adrien
2921 Vialletelle).
Paul Bakker8dcb2d72014-08-08 12:22:30 +02002922
Manuel Pégourié-Gonnard8d4ad072014-07-13 14:43:28 +02002923Changes
2924 * Ciphersuites using SHA-256 or SHA-384 now require TLS 1.x (there is no
2925 standard defining how to use SHA-2 with SSL 3.0).
Manuel Pégourié-Gonnarda04fa4f2014-07-13 16:16:44 +02002926 * Ciphersuites using RSA-PSK key exchange new require TLS 1.x (the spec is
2927 ambiguous on how to encode some packets with SSL 3.0).
Manuel Pégourié-Gonnard192253a2014-07-21 16:37:15 +02002928 * Made buffer size in pk_write_(pub)key_pem() more dynamic, eg smaller if
2929 RSA is disabled, larger if POLARSSL_MPI_MAX_SIZE is larger.
Manuel Pégourié-Gonnardf26a1e82014-08-19 12:28:50 +02002930 * ssl_read() now returns POLARSSL_ERR_NET_WANT_READ rather than
2931 POLARSSL_ERR_SSL_UNEXPECTED_MESSAGE on harmless alerts.
Manuel Pégourié-Gonnardda1b4de2014-09-08 17:03:50 +02002932 * POLARSSL_MPI_MAX_SIZE now defaults to 1024 in order to allow 8192 bits
2933 RSA keys.
Manuel Pégourié-Gonnard64938c62014-10-15 21:45:39 +02002934 * Accept spaces at end of line or end of buffer in base64_decode().
Manuel Pégourié-Gonnard5d861852014-10-17 12:41:41 +02002935 * X.509 certificates with more than one AttributeTypeAndValue per
2936 RelativeDistinguishedName are not accepted any more.
Manuel Pégourié-Gonnard8d4ad072014-07-13 14:43:28 +02002937
Paul Bakker1910aa72014-07-11 11:28:56 +02002938= PolarSSL 1.3.8 released 2014-07-11
Manuel Pégourié-Gonnard0bcc4e12014-06-17 10:54:17 +02002939Security
2940 * Fix length checking for AEAD ciphersuites (found by Codenomicon).
2941 It was possible to crash the server (and client) using crafted messages
2942 when a GCM suite was chosen.
2943
Paul Bakkerc6ece492014-05-22 15:45:03 +02002944Features
2945 * Add CCM module and cipher mode to Cipher Layer
2946 * Support for CCM and CCM_8 ciphersuites
Manuel Pégourié-Gonnardb4798712014-06-06 18:10:44 +02002947 * Support for parsing and verifying RSASSA-PSS signatures in the X.509
2948 modules (certificates, CRLs and CSRs).
Manuel Pégourié-Gonnard398c57b2014-06-23 12:10:59 +02002949 * Blowfish in the cipher layer now supports variable length keys.
Manuel Pégourié-Gonnard35795222014-06-24 17:33:54 +02002950 * Add example config.h for PSK with CCM, optimized for low RAM usage.
2951 * Optimize for RAM usage in example config.h for NSA Suite B profile.
Manuel Pégourié-Gonnard01edb102014-06-24 22:42:34 +02002952 * Add POLARSSL_REMOVE_ARC4_CIPHERSUITES to allow removing RC4 ciphersuites
2953 from the default list (inactive by default).
Paul Bakker23647b42014-07-04 15:00:12 +02002954 * Add server-side enforcement of sent renegotiation requests
2955 (ssl_set_renegotiation_enforced())
Manuel Pégourié-Gonnarddfc7df02014-06-30 17:59:55 +02002956 * Add SSL_CIPHERSUITES config.h flag to allow specifying a list of
2957 ciphersuites to use and save some memory if the list is small.
Paul Bakkerc6ece492014-05-22 15:45:03 +02002958
Paul Bakker863989b2014-06-12 21:49:01 +02002959Changes
2960 * Add LINK_WITH_PTHREAD option in CMake for explicit linking that is
2961 required on some platforms (e.g. OpenBSD)
Paul Bakker34617722014-06-13 17:20:13 +02002962 * Migrate zeroizing of data to polarssl_zeroize() instead of memset()
2963 against unwanted compiler optimizations
Manuel Pégourié-Gonnardbd772542014-07-07 14:02:33 +02002964 * md_list() now returns hashes strongest first
Manuel Pégourié-Gonnard08e81e02014-07-08 12:56:25 +02002965 * Selection of hash for signing ServerKeyExchange in TLS 1.2 now picks
2966 strongest offered by client.
Paul Bakker28476e22014-07-01 15:59:04 +02002967 * All public contexts have _init() and _free() functions now for simpler
2968 usage pattern
Paul Bakker863989b2014-06-12 21:49:01 +02002969
Paul Bakker5593f7c2014-05-06 10:29:28 +02002970Bugfix
2971 * Fix in debug_print_msg()
Paul Bakker1ebc0c52014-05-22 15:47:58 +02002972 * Enforce alignment in the buffer allocator even if buffer is not aligned
Paul Bakkerdff31392014-05-22 15:06:41 +02002973 * Remove less-than-zero checks on unsigned numbers
Paul Bakker0f651c72014-05-22 15:12:19 +02002974 * Stricter check on SSL ClientHello internal sizes compared to actual packet
2975 size (found by TrustInSoft)
Paul Bakker49033ba2014-06-12 21:46:13 +02002976 * Fix WSAStartup() return value check (found by Peter Vaskovic)
2977 * Other minor issues (found by Peter Vaskovic)
2978 * Fix symlink command for cross compiling with CMake (found by Andre
2979 Heinecke)
Paul Bakker3c38f292014-06-13 17:37:46 +02002980 * Fix DER output of gen_key app (found by Gergely Budai)
Manuel Pégourié-Gonnard08485cc2014-06-18 23:11:34 +02002981 * Very small records were incorrectly rejected when truncated HMAC was in
Manuel Pégourié-Gonnardeaa76f72014-06-18 16:06:02 +02002982 use with some ciphersuites and versions (RC4 in all versions, CBC with
2983 versions < TLS 1.1).
Manuel Pégourié-Gonnard08485cc2014-06-18 23:11:34 +02002984 * Very large records using more than 224 bytes of padding were incorrectly
2985 rejected with CBC-based ciphersuites and TLS >= 1.1
2986 * Very large records using less padding could cause a buffer overread of up
2987 to 32 bytes with CBC-based ciphersuites and TLS >= 1.1
Manuel Pégourié-Gonnardc4eff162014-06-19 12:18:08 +02002988 * Restore ability to use a v1 cert as a CA if trusted locally. (This had
2989 been removed in 1.3.6.)
Manuel Pégourié-Gonnardd249b7a2014-06-24 11:49:16 +02002990 * Restore ability to locally trust a self-signed cert that is not a proper
2991 CA for use as an end entity certificate. (This had been removed in
2992 1.3.6.)
Barry K. Nathan35e7cb92014-05-05 23:26:13 -07002993 * Fix preprocessor checks for bn_mul PPC asm (found by Barry K. Nathan).
Manuel Pégourié-Gonnardacbcbba2014-06-19 17:20:43 +02002994 * Use \n\t rather than semicolons for bn_mul asm, since some assemblers
2995 interpret semicolons as comment delimiters (found by Barry K. Nathan).
Manuel Pégourié-Gonnardfd35af12014-06-23 14:10:13 +02002996 * Fix off-by-one error in parsing Supported Point Format extension that
2997 caused some handshakes to fail.
Manuel Pégourié-Gonnard8df68632014-06-23 17:56:08 +02002998 * Fix possible miscomputation of the premaster secret with DHE-PSK key
2999 exchange that caused some handshakes to fail with other implementations.
3000 (Failure rate <= 1/255 with common DHM moduli.)
Manuel Pégourié-Gonnard31357252014-06-24 17:57:57 +02003001 * Disable broken Sparc64 bn_mul assembly (found by Florian Obser).
Paul Bakkerd5983182014-07-04 13:50:31 +02003002 * Fix base64_decode() to return and check length correctly (in case of
3003 tight buffers)
Paul Bakker6c343d72014-07-10 14:36:19 +02003004 * Fix mpi_write_string() to write "00" as hex output for empty MPI (found
3005 by Hui Dong)
Paul Bakker5593f7c2014-05-06 10:29:28 +02003006
Paul Bakker47431b62014-05-02 13:27:13 +02003007= PolarSSL 1.3.7 released on 2014-05-02
Paul Bakkereaebbd52014-04-25 15:04:14 +02003008Features
Paul Bakkerc73079a2014-04-25 16:34:30 +02003009 * debug_set_log_mode() added to determine raw or full logging
3010 * debug_set_threshold() added to ignore messages over threshold level
Paul Bakker0f90d7d2014-04-30 11:49:44 +02003011 * version_check_feature() added to check for compile-time options at
3012 run-time
Paul Bakker92478c32014-04-25 15:18:34 +02003013
Paul Bakker088c5c52014-04-25 11:11:10 +02003014Changes
3015 * POLARSSL_CONFIG_OPTIONS has been removed. All values are individually
3016 checked and filled in the relevant module headers
Paul Bakker92478c32014-04-25 15:18:34 +02003017 * Debug module only outputs full lines instead of parts
Paul Bakker63844402014-04-30 15:34:12 +02003018 * Better support for the different Attribute Types from IETF PKIX (RFC 5280)
Manuel Pégourié-Gonnard63a5bfe2014-04-26 17:21:07 +02003019 * AES-NI now compiles with "old" assemblers too
Manuel Pégourié-Gonnardc16f4e12014-04-29 18:23:07 +02003020 * Ciphersuites based on RC4 now have the lowest priority by default
Paul Bakker088c5c52014-04-25 11:11:10 +02003021
Paul Bakkere92f73d2014-04-18 14:08:26 +02003022Bugfix
3023 * Only iterate over actual certificates in ssl_write_certificate_request()
3024 (found by Matthew Page)
Paul Bakker4ffcd2f2014-04-25 11:44:12 +02003025 * Typos in platform.c and pkcs11.c (found by Daniel Phillips and Steffan
3026 Karger)
Paul Bakkerfdba4682014-04-25 11:48:35 +02003027 * cert_write app should use subject of issuer certificate as issuer of cert
Paul Bakker61885c72014-04-25 12:59:03 +02003028 * Fix false reject in padding check in ssl_decrypt_buf() for CBC
3029 ciphersuites, for full SSL frames of data.
Paul Bakkera7036632014-04-30 10:15:38 +02003030 * Improve interoperability by not writing extension length in ClientHello /
3031 ServerHello when no extensions are present (found by Matthew Page)
Paul Bakker24f37cc2014-04-30 13:33:35 +02003032 * rsa_check_pubkey() now allows an E up to N
Paul Bakkerf96f7b62014-04-30 16:02:38 +02003033 * On OpenBSD, use arc4random_buf() instead of rand() to prevent warnings
Paul Bakker33dc46b2014-04-30 16:11:39 +02003034 * mpi_fill_random() was creating numbers larger than requested on
3035 big-endian platform when size was not an integer number of limbs
Manuel Pégourié-Gonnardedc81ff2014-04-29 15:06:49 +02003036 * Fix dependencies issues in X.509 test suite.
Manuel Pégourié-Gonnard3a306b92014-04-29 15:11:17 +02003037 * Some parts of ssl_tls.c were compiled even when the module was disabled.
Markus Pfeiffera26a0052014-04-22 20:16:15 +00003038 * Fix detection of DragonflyBSD in net.c (found by Markus Pfeiffer)
Barry K. Nathancf975f52014-04-23 17:40:25 -07003039 * Fix detection of Clang on some Apple platforms with CMake
3040 (found by Barry K. Nathan)
Paul Bakkere92f73d2014-04-18 14:08:26 +02003041
Paul Bakker784b04f2014-04-11 15:33:59 +02003042= PolarSSL 1.3.6 released on 2014-04-11
Manuel Pégourié-Gonnard969ccc62014-03-26 19:53:25 +01003043
Paul Bakker27e36d32014-04-08 12:33:37 +02003044Features
3045 * Support for the ALPN SSL extension
Paul Bakker1cfc4582014-04-09 15:25:13 +02003046 * Add option 'use_dev_random' to gen_key application
Manuel Pégourié-Gonnardb7fff0f2014-04-11 11:32:39 +02003047 * Enable verification of the keyUsage extension for CA and leaf
Paul Bakker59366212014-04-09 15:55:20 +02003048 certificates (POLARSSL_X509_CHECK_KEY_USAGE)
Manuel Pégourié-Gonnardb7fff0f2014-04-11 11:32:39 +02003049 * Enable verification of the extendedKeyUsage extension
3050 (POLARSSL_X509_CHECK_EXTENDED_KEY_USAGE)
Paul Bakker27e36d32014-04-08 12:33:37 +02003051
Paul Bakker4984d3c2014-04-04 15:39:37 +02003052Changes
3053 * x509_crt_info() now prints information about parsed extensions as well
Manuel Pégourié-Gonnard2abed842014-04-08 12:40:15 +02003054 * pk_verify() now returns a specific error code when the signature is valid
3055 but shorter than the supplied length.
Manuel Pégourié-Gonnard0776a432014-04-11 12:25:45 +02003056 * Use UTC time to check certificate validity.
Manuel Pégourié-Gonnard9655e452014-04-11 12:29:49 +02003057 * Reject certificates with times not in UTC, per RFC 5280.
Paul Bakker4984d3c2014-04-04 15:39:37 +02003058
Manuel Pégourié-Gonnarddd75c312014-03-31 11:55:42 +02003059Security
3060 * Avoid potential timing leak in ecdsa_sign() by blinding modular division.
3061 (Found by Watson Ladd.)
Manuel Pégourié-Gonnard8c045ef2014-04-08 11:55:03 +02003062 * The notAfter date of some certificates was no longer checked since 1.3.5.
3063 This affects certificates in the user-supplied chain except the top
3064 certificate. If the user-supplied chain contains only one certificates,
3065 it is not affected (ie, its notAfter date is properly checked).
Paul Bakker4224bc02014-04-08 14:36:50 +02003066 * Prevent potential NULL pointer dereference in ssl_read_record() (found by
3067 TrustInSoft)
Manuel Pégourié-Gonnarddd75c312014-03-31 11:55:42 +02003068
Manuel Pégourié-Gonnard969ccc62014-03-26 19:53:25 +01003069Bugfix
3070 * The length of various ClientKeyExchange messages was not properly checked.
Manuel Pégourié-Gonnard6b0d2682014-03-25 11:24:43 +01003071 * Some example server programs were not sending the close_notify alert.
Paul Bakker75a28602014-03-31 12:08:17 +02003072 * Potential memory leak in mpi_exp_mod() when error occurs during
3073 calculation of RR.
Manuel Pégourié-Gonnard74bc68a2014-04-02 13:20:00 +02003074 * Fixed malloc/free default #define in platform.c (found by Gergely Budai).
Manuel Pégourié-Gonnarde4421112014-04-02 13:50:05 +02003075 * Fixed type which made POLARSSL_ENTROPY_FORCE_SHA256 uneffective (found by
3076 Gergely Budai).
Manuel Pégourié-Gonnard887aa5b2014-04-04 13:57:20 +02003077 * Fix #include path in ecdsa.h which wasn't accepted by some compilers.
3078 (found by Gergely Budai)
Shuo Chen95a0d112014-04-04 21:04:40 -07003079 * Fix compile errors when POLARSSL_ERROR_STRERROR_BC is undefined (found by
3080 Shuo Chen).
Manuel Pégourié-Gonnard7afdb882014-03-28 16:06:35 +01003081 * oid_get_numeric_string() used to truncate the output without returning an
3082 error if the output buffer was just 1 byte too small.
Manuel Pégourié-Gonnard3fec2202014-03-29 16:42:38 +01003083 * dhm_parse_dhm() (hence dhm_parse_dhmfile()) did not set dhm->len.
Manuel Pégourié-Gonnard01488752014-04-03 22:09:18 +02003084 * Calling pk_debug() on an RSA-alt key would segfault.
3085 * pk_get_size() and pk_get_len() were off by a factor 8 for RSA-alt keys.
Paul Bakker16300582014-04-11 13:28:43 +02003086 * Potential buffer overwrite in pem_write_buffer() because of low length
3087 indication (found by Thijs Alkemade)
Manuel Pégourié-Gonnard78848372014-04-10 17:45:07 +02003088 * EC curves constants, which should be only in ROM since 1.3.3, were also
3089 stored in RAM due to missing 'const's (found by Gergely Budai).
Manuel Pégourié-Gonnard969ccc62014-03-26 19:53:25 +01003090
Paul Bakker96d52652014-03-26 16:55:50 +01003091= PolarSSL 1.3.5 released on 2014-03-26
Paul Bakker5fb8efe2014-02-05 15:54:34 +01003092Features
3093 * HMAC-DRBG as a separate module
Manuel Pégourié-Gonnard84c30c72014-02-26 17:38:55 +01003094 * Option to set the Curve preference order (disabled by default)
Paul Bakker6a28e722014-02-06 13:41:55 +01003095 * Single Platform compatilibity layer (for memory / printf / fprintf)
Paul Bakkerf2561b32014-02-06 15:11:55 +01003096 * Ability to provide alternate timing implementation
Paul Bakker2ceda572014-02-06 15:55:25 +01003097 * Ability to force the entropy module to use SHA-256 as its basis
3098 (POLARSSL_ENTROPY_FORCE_SHA256)
Paul Bakker6a8e7f82014-03-17 13:45:06 +01003099 * Testing script ssl-opt.sh added for testing 'live' ssl option
3100 interoperability against OpenSSL and PolarSSL
Manuel Pégourié-Gonnard86b400f2014-03-19 16:55:29 +01003101 * Support for reading EC keys that use SpecifiedECDomain in some cases.
Paul Bakker66ff70d2014-03-26 11:54:05 +01003102 * Entropy module now supports seed writing and reading
Paul Bakker6a28e722014-02-06 13:41:55 +01003103
3104Changes
3105 * Deprecated the Memory layer
Paul Bakker47703a02014-02-06 15:01:20 +01003106 * entropy_add_source(), entropy_update_manual() and entropy_gather()
3107 now thread-safe if POLARSSL_THREADING_C defined
Manuel Pégourié-Gonnard14ed1a22014-03-11 10:16:25 +01003108 * Improvements to the CMake build system, contributed by Julian Ospald.
Manuel Pégourié-Gonnardbb8661e2014-03-14 09:21:20 +01003109 * Work around a bug of the version of Clang shipped by Apple with Mavericks
3110 that prevented bignum.c from compiling. (Reported by Rafael Baptista.)
Paul Bakker6a8e7f82014-03-17 13:45:06 +01003111 * Revamped the compat.sh interoperatibility script to include support for
3112 testing against GnuTLS
Manuel Pégourié-Gonnard7a2aba82014-03-25 16:37:27 +01003113 * Deprecated ssl_set_own_cert_rsa() and ssl_set_own_cert_rsa_alt()
Paul Bakker674e0b02014-03-26 13:26:52 +01003114 * Improvements to tests/Makefile, contributed by Oden Eriksson.
Paul Bakker5fb8efe2014-02-05 15:54:34 +01003115
Manuel Pégourié-Gonnard796c6f32014-03-10 09:34:49 +01003116Security
3117 * Forbid change of server certificate during renegotiation to prevent
Manuel Pégourié-Gonnardb2bf5a12014-03-25 16:28:12 +01003118 "triple handshake" attack when authentication mode is 'optional' (the
Manuel Pégourié-Gonnard796c6f32014-03-10 09:34:49 +01003119 attack was already impossible when authentication is required).
Manuel Pégourié-Gonnard95337652014-03-10 13:15:18 +01003120 * Check notBefore timestamp of certificates and CRLs from the future.
Manuel Pégourié-Gonnard83cdffc2014-03-10 21:20:29 +01003121 * Forbid sequence number wrapping
Manuel Pégourié-Gonnard7a2aba82014-03-25 16:37:27 +01003122 * Fixed possible buffer overflow with overlong PSK
Paul Bakker91c61bc2014-03-26 14:06:55 +01003123 * Possible remotely-triggered out-of-bounds memory access fixed (found by
3124 TrustInSoft)
Manuel Pégourié-Gonnard796c6f32014-03-10 09:34:49 +01003125
Manuel Pégourié-Gonnard6e8e34d2014-01-28 19:30:56 +01003126Bugfix
3127 * ecp_gen_keypair() does more tries to prevent failure because of
3128 statistics
Manuel Pégourié-Gonnard7a2aba82014-03-25 16:37:27 +01003129 * Fixed bug in RSA PKCS#1 v1.5 "reversed" operations
Paul Bakkercd6d69a2014-02-06 15:43:21 +01003130 * Fixed testing with out-of-source builds using cmake
Manuel Pégourié-Gonnard6b1e2072014-02-12 10:14:54 +01003131 * Fixed version-major intolerance in server
Paul Bakker3d52ab72014-03-07 10:33:55 +01003132 * Fixed CMake symlinking on out-of-source builds
Manuel Pégourié-Gonnard29dcc0b2014-03-10 11:32:07 +01003133 * Fixed dependency issues in test suite
Manuel Pégourié-Gonnard844a4c02014-03-10 21:55:35 +01003134 * Programs rsa_sign_pss and rsa_verify_pss were not using PSS since 1.3.0
Alex Wilson73491422014-03-06 00:04:09 +10003135 * Bignum's MIPS-32 assembly was used on MIPS-64, causing chaos. (Found by
3136 Alex Wilson.)
Manuel Pégourié-Gonnard84c30c72014-02-26 17:38:55 +01003137 * ssl_cache was creating entries when max_entries=0 if TIMING_C was enabled.
3138 * m_sleep() was sleeping twice too long on most Unix platforms.
Manuel Pégourié-Gonnard145dfcb2014-02-26 14:23:33 +01003139 * Fixed bug with session tickets and non-blocking I/O in the unlikely case
Paul Bakkerb0695ce2014-03-17 13:42:23 +01003140 send() would return an EAGAIN error when sending the ticket.
Manuel Pégourié-Gonnard84c30c72014-02-26 17:38:55 +01003141 * ssl_cache was leaking memory when reusing a timed out entry containing a
Paul Bakkerb0695ce2014-03-17 13:42:23 +01003142 client certificate.
Manuel Pégourié-Gonnardd701c9a2014-02-26 17:54:07 +01003143 * ssl_srv was leaking memory when client presented a timed out ticket
Paul Bakkerb0695ce2014-03-17 13:42:23 +01003144 containing a client certificate
Paul Bakker3d6504a2014-03-17 13:41:51 +01003145 * ssl_init() was leaving a dirty pointer in ssl_context if malloc of
3146 out_ctr failed
Paul Bakker77f4f392014-03-26 15:28:55 +01003147 * ssl_handshake_init() was leaving dirty pointers in subcontexts if malloc
3148 of one of them failed
Manuel Pégourié-Gonnardfdddac92014-03-25 15:58:35 +01003149 * Fix typo in rsa_copy() that impacted PKCS#1 v2 contexts
Paul Bakker5fff23b2014-03-26 15:34:54 +01003150 * x509_get_current_time() uses localtime_r() to prevent thread issues
Manuel Pégourié-Gonnard6e8e34d2014-01-28 19:30:56 +01003151
Paul Bakker2aca2412014-01-27 11:49:46 +01003152= PolarSSL 1.3.4 released on 2014-01-27
Paul Bakker3eb96732014-01-22 13:08:19 +01003153Features
Paul Bakker0ac99ca2014-01-22 13:08:44 +01003154 * Support for the Koblitz curves: secp192k1, secp224k1, secp256k1
Paul Bakker5862eee2014-01-22 14:18:03 +01003155 * Support for RIPEMD-160
Paul Bakker556efba2014-01-24 15:38:12 +01003156 * Support for AES CFB8 mode
Paul Bakkere6c2ddb2014-01-27 11:47:15 +01003157 * Support for deterministic ECDSA (RFC 6979)
Paul Bakker3eb96732014-01-22 13:08:19 +01003158
3159Bugfix
3160 * Potential memory leak in bignum_selftest()
3161 * Replaced expired test certificate
Paul Bakkerd75ba402014-01-24 16:11:17 +01003162 * ssl_mail_client now terminates lines with CRLF, instead of LF
Paul Bakkerb84582b2014-01-27 12:23:43 +01003163 * net module handles timeouts on blocking sockets better (found by Tilman
3164 Sauerbeck)
Paul Bakker2cb1a0c2014-01-27 13:36:23 +01003165 * Assembly format fixes in bn_mul.h
3166
3167Security
Paul Bakkerb84582b2014-01-27 12:23:43 +01003168 * Missing MPI_CHK calls added around unguarded mpi calls (found by
3169 TrustInSoft)
Paul Bakker3eb96732014-01-22 13:08:19 +01003170
Paul Bakker5bc07a32013-12-31 10:57:44 +01003171= PolarSSL 1.3.3 released on 2013-12-31
Paul Bakker014f1432013-12-02 14:54:01 +01003172Features
3173 * EC key generation support in gen_key app
Paul Bakker9dc53a92013-12-02 14:55:28 +01003174 * Support for adhering to client ciphersuite order preference
3175 (POLARSSL_SSL_SRV_RESPECT_CLIENT_PREFERENCE)
Paul Bakker48d78a52013-12-05 16:11:38 +01003176 * Support for Curve25519
Paul Bakkerfdf94692013-12-17 13:09:31 +01003177 * Support for ECDH-RSA and ECDH-ECDSA key exchanges and ciphersuites
Paul Bakker5a607d22013-12-17 14:33:42 +01003178 * Support for IPv6 in the NET module
Paul Bakker23116fd2013-12-30 14:09:47 +01003179 * AES-NI support for AES, AES-GCM and AES key scheduling
Paul Bakkerf9c49532013-12-19 15:40:58 +01003180 * SSL Pthread-based server example added (ssl_pthread_server)
Paul Bakker014f1432013-12-02 14:54:01 +01003181
Paul Bakker7aa03752013-11-26 17:37:31 +01003182Changes
3183 * gen_prime() speedup
3184 * Speedup of ECP multiplication operation
3185 * Relaxed some SHA2 ciphersuite's version requirements
Paul Bakkerc3d0d072013-12-02 14:50:49 +01003186 * Dropped use of readdir_r() instead of readdir() with threading support
Paul Bakker4040d7e2013-12-02 14:52:57 +01003187 * More constant-time checks in the RSA module
Paul Bakkerb14817d2013-12-02 22:03:23 +01003188 * Split off curves from ecp.c into ecp_curves.c
Paul Bakker5ab68ba2013-12-17 13:10:48 +01003189 * Curves are now stored fully in ROM
Paul Bakkerc7387912013-12-31 10:32:50 +01003190 * Memory usage optimizations in ECP module
Paul Bakkera8fd3e32013-12-31 11:54:08 +01003191 * Removed POLARSSL_THREADING_DUMMY
Paul Bakker7aa03752013-11-26 17:37:31 +01003192
Paul Bakkerf2b4d862013-11-20 17:23:53 +01003193Bugfix
Manuel Pégourié-Gonnard9a4a5ac2013-12-04 18:05:29 +01003194 * Fixed bug in mpi_set_bit() on platforms where t_uint is wider than int
Paul Bakkerf2b4d862013-11-20 17:23:53 +01003195 * Fixed X.509 hostname comparison (with non-regular characters)
Paul Bakkera9a028e2013-11-21 17:31:06 +01003196 * SSL now gracefully handles missing RNG
Paul Bakker7aa03752013-11-26 17:37:31 +01003197 * Missing defines / cases for RSA_PSK key exchange
3198 * crypt_and_hash app checks MAC before final decryption
Paul Bakker6f0636a2013-12-16 15:24:05 +01003199 * Potential memory leak in ssl_ticket_keys_init()
Paul Bakkerf70fe812013-12-16 16:43:10 +01003200 * Memory leak in benchmark application
Paul Bakker1a56fc92013-12-19 13:51:24 +01003201 * Fixed x509_crt_parse_path() bug on Windows platforms
Paul Bakker6ea1a952013-12-31 11:16:03 +01003202 * Added missing MPI_CHK() around some statements in mpi_div_mpi() (found by
3203 TrustInSoft)
Paul Bakker6992eb72013-12-31 11:35:16 +01003204 * Fixed potential overflow in certificate size verification in
3205 ssl_write_certificate() (found by TrustInSoft)
Paul Bakkerf2b4d862013-11-20 17:23:53 +01003206
Paul Bakker956c9e02013-12-19 14:42:28 +01003207Security
3208 * Possible remotely-triggered out-of-bounds memory access fixed (found by
3209 TrustInSoft)
3210
Paul Bakkerf4dc1862013-11-04 17:29:42 +01003211= PolarSSL 1.3.2 released on 2013-11-04
Paul Bakker08bb1872013-10-28 14:03:26 +01003212Features
3213 * PK tests added to test framework
Paul Bakker3f917e22013-10-28 14:16:59 +01003214 * Added optional optimization for NIST MODP curves (POLARSSL_ECP_NIST_OPTIM)
Paul Bakker16421222013-10-28 14:37:09 +01003215 * Support for Camellia-GCM mode and ciphersuites
Paul Bakker08bb1872013-10-28 14:03:26 +01003216
Paul Bakker7bc745b2013-10-28 14:39:49 +01003217Changes
3218 * Padding checks in cipher layer are now constant-time
Paul Bakkere1121b62013-10-31 14:37:37 +01003219 * Value comparisons in SSL layer are now constant-time
Paul Bakker7b0be682013-10-29 14:24:37 +01003220 * Support for serialNumber, postalAddress and postalCode in X509 names
Paul Bakkere1121b62013-10-31 14:37:37 +01003221 * SSL Renegotiation was refactored
Paul Bakker7bc745b2013-10-28 14:39:49 +01003222
Paul Bakker677377f2013-10-28 12:54:26 +01003223Bugfix
Paul Bakker16421222013-10-28 14:37:09 +01003224 * More stringent checks in cipher layer
Paul Bakker677377f2013-10-28 12:54:26 +01003225 * Server does not send out extensions not advertised by client
Paul Bakker45a2c8d2013-10-28 12:57:08 +01003226 * Prevent possible alignment warnings on casting from char * to 'aligned *'
Paul Bakker68037da2013-10-28 14:02:40 +01003227 * Misc fixes and additions to dependency checks
Paul Bakker50dc8502013-10-28 21:19:10 +01003228 * Const correctness
Paul Bakker93c6aa42013-10-28 22:28:09 +01003229 * cert_write with selfsign should use issuer_name as subject_name
Manuel Pégourié-Gonnard178d9ba2013-10-29 10:45:28 +01003230 * Fix ECDSA corner case: missing reduction mod N (found by DualTachyon)
Paul Bakkerfa6a6202013-10-28 18:48:30 +01003231 * Defines to handle UEFI environment under MSVC
Paul Bakkere1121b62013-10-31 14:37:37 +01003232 * Server-side initiated renegotiations send HelloRequest
Paul Bakker677377f2013-10-28 12:54:26 +01003233
Paul Bakker5c17ccd2013-10-15 13:12:41 +02003234= PolarSSL 1.3.1 released on 2013-10-15
Paul Bakkerb799dec2013-10-11 10:03:27 +02003235Features
3236 * Support for Brainpool curves and TLS ciphersuites (RFC 7027)
Paul Bakker376e8152013-10-15 12:44:23 +02003237 * Support for ECDHE-PSK key-exchange and ciphersuites
Paul Bakkerf34673e2013-10-15 12:46:17 +02003238 * Support for RSA-PSK key-exchange and ciphersuites
Paul Bakkerb799dec2013-10-11 10:03:27 +02003239
Paul Bakkerddba8822013-10-11 09:21:56 +02003240Changes
3241 * RSA blinding locks for a smaller amount of time
Paul Bakker16770332013-10-11 09:59:44 +02003242 * TLS compression only allocates working buffer once
Paul Bakkerbe089b02013-10-14 15:51:50 +02003243 * Introduced POLARSSL_HAVE_READDIR_R for systems without it
Paul Bakkera7ea6a52013-10-15 11:55:10 +02003244 * config.h is more script-friendly
Paul Bakkerddba8822013-10-11 09:21:56 +02003245
3246Bugfix
3247 * Missing MSVC defines added
3248 * Compile errors with POLARSSL_RSA_NO_CRT
3249 * Header files with 'polarssl/'
Paul Bakkerfcc17212013-10-11 09:36:52 +02003250 * Const correctness
Paul Bakkerd61cc3b2013-10-11 09:38:49 +02003251 * Possible naming collision in dhm_context
Paul Bakker4aa40d42013-10-11 10:49:24 +02003252 * Better support for MSVC
Paul Bakkerb7c13122013-10-11 10:51:32 +02003253 * threading_set_alt() name
Paul Bakker5191e922013-10-11 10:54:28 +02003254 * Added missing x509write_crt_set_version()
Paul Bakkerddba8822013-10-11 09:21:56 +02003255
Paul Bakker5c17ccd2013-10-15 13:12:41 +02003256= PolarSSL 1.3.0 released on 2013-10-01
Paul Bakker41c83d32013-03-20 14:39:14 +01003257Features
3258 * Elliptic Curve Cryptography module added
3259 * Elliptic Curve Diffie Hellman module added
3260 * Ephemeral Elliptic Curve Diffie Hellman support for SSL/TLS
3261 (ECDHE-based ciphersuites)
Paul Bakkerc8676782013-08-28 12:15:11 +02003262 * Ephemeral Elliptic Curve Digital Signature Algorithm support for SSL/TLS
3263 (ECDSA-based ciphersuites)
Paul Bakker8f4ddae2013-04-15 15:09:54 +02003264 * Ability to specify allowed ciphersuites based on the protocol version.
Paul Bakkerb91c2b52013-04-19 16:05:16 +02003265 * PSK and DHE-PSK based ciphersuites added
Paul Bakker6e339b52013-07-03 13:37:05 +02003266 * Memory allocation abstraction layer added
3267 * Buffer-based memory allocator added (no malloc() / free() / HEAP usage)
Paul Bakker2466d932013-09-28 14:40:38 +02003268 * Threading abstraction layer added (dummy / pthread / alternate)
Paul Bakker5ad403f2013-09-18 21:21:30 +02003269 * Public Key abstraction layer added
Paul Bakkerf85778e2013-07-19 14:55:25 +02003270 * Parsing Elliptic Curve keys
3271 * Parsing Elliptic Curve certificates
3272 * Support for max_fragment_length extension (RFC 6066)
3273 * Support for truncated_hmac extension (RFC 6066)
Paul Bakkerda4d1c32013-08-14 12:24:34 +02003274 * Support for zeros-and-length (ANSI X.923) padding, one-and-zeros
3275 (ISO/IEC 7816-4) padding and zero padding in the cipher layer
Paul Bakker936539a2013-08-14 13:49:20 +02003276 * Support for session tickets (RFC 5077)
Paul Bakkerca174fe2013-08-28 16:31:30 +02003277 * Certificate Request (CSR) generation with extensions (key_usage,
3278 ns_cert_type)
Paul Bakker7fb4a792013-09-12 12:00:52 +02003279 * X509 Certificate writing with extensions (basic_constraints,
3280 issuer_key_identifier, etc)
Paul Bakker6ec34fb2013-09-10 14:53:46 +02003281 * Optional blinding for RSA, DHM and EC
Paul Bakker8b817dc2013-09-25 18:03:58 +02003282 * Support for multiple active certificate / key pairs in SSL servers for
Darryl Green11999bb2018-03-13 15:22:58 +00003283 the same host (Not to be confused with SNI!)
Paul Bakker41c83d32013-03-20 14:39:14 +01003284
Paul Bakker9b5798d2013-03-13 13:53:00 +01003285Changes
Paul Bakkerd2f068e2013-08-27 21:19:20 +02003286 * Ability to enable / disable SSL v3 / TLS 1.0 / TLS 1.1 / TLS 1.2
3287 individually
Paul Bakker68884e32013-01-07 18:20:04 +01003288 * Introduced separate SSL Ciphersuites module that is based on
3289 Cipher and MD information
Paul Bakker9b5798d2013-03-13 13:53:00 +01003290 * Internals for SSL module adapted to have separate IV pointer that is
3291 dynamically set (Better support for hardware acceleration)
Paul Bakkerc70b9822013-04-07 22:00:46 +02003292 * Moved all OID functionality to a separate module. RSA function
3293 prototypes for the RSA sign and verify functions changed as a result
Paul Bakkerb9d3cfa2013-06-26 15:07:16 +02003294 * Split up the GCM module into a starts/update/finish cycle
Paul Bakker2fbefde2013-06-29 16:01:15 +02003295 * Client and server now filter sent and accepted ciphersuites on minimum
3296 and maximum protocol version
Paul Bakker0be444a2013-08-27 21:55:01 +02003297 * Ability to disable server_name extension (RFC 6066)
Paul Bakkere2ab84f2013-06-29 18:24:32 +02003298 * Renamed error_strerror() to the less conflicting polarssl_strerror()
3299 (Ability to keep old as well with POLARSSL_ERROR_STRERROR_BC)
Paul Bakker9e36f042013-06-30 14:34:05 +02003300 * SHA2 renamed to SHA256, SHA4 renamed to SHA512 and functions accordingly
Paul Bakker548957d2013-08-30 10:30:02 +02003301 * All RSA operations require a random generator for blinding purposes
Paul Bakker45f21c72013-09-18 15:33:49 +02003302 * X509 core refactored
3303 * x509_crt_verify() now case insensitive for cn (RFC 6125 6.4)
Paul Bakker5ad403f2013-09-18 21:21:30 +02003304 * Also compiles / runs without time-based functions (!POLARSSL_HAVE_TIME)
Paul Bakkerc27c4e22013-09-23 15:01:36 +02003305 * Support faulty X509 v1 certificates with extensions
3306 (POLARSSL_X509_ALLOW_EXTENSIONS_NON_V3)
Paul Bakker9b5798d2013-03-13 13:53:00 +01003307
Paul Bakkereff2e6d2013-04-11 17:13:22 +02003308Bugfix
Paul Bakker73d44312013-05-22 13:56:26 +02003309 * Fixed parse error in ssl_parse_certificate_request()
Paul Bakkerabf2f8f2013-06-30 14:57:46 +02003310 * zlib compression/decompression skipped on empty blocks
Paul Bakker1e6a1752013-07-26 14:10:22 +02003311 * Support for AIX header locations in net.c module
Paul Bakker003dbad2013-09-09 17:26:14 +02003312 * Fixed file descriptor leaks
Paul Bakkereff2e6d2013-04-11 17:13:22 +02003313
Paul Bakkeraab30c12013-08-30 11:00:25 +02003314Security
3315 * RSA blinding on CRT operations to counter timing attacks
3316 (found by Cyril Arnaud and Pierre-Alain Fouque)
3317
Manuel Pégourié-Gonnard7b124922015-04-30 10:16:19 +02003318
3319= Version 1.2.14 released 2015-05-??
3320
3321Security
3322 * Fix potential invalid memory read in the server, that allows a client to
3323 crash it remotely (found by Caj Larsson).
3324 * Fix potential invalid memory read in certificate parsing, that allows a
3325 client to crash the server remotely if client authentication is enabled
3326 (found using Codenomicon Defensics).
3327 * Add countermeasure against "Lucky 13 strikes back" cache-based attack,
3328 https://dl.acm.org/citation.cfm?id=2714625
3329
3330Bugfix
3331 * Fix bug in Via Padlock support (found by Nikos Mavrogiannopoulos).
3332 * Fix hardclock() (only used in the benchmarking program) with some
3333 versions of mingw64 (found by kxjhlele).
3334 * Fix warnings from mingw64 in timing.c (found by kxjklele).
3335 * Fix potential unintended sign extension in asn1_get_len() on 64-bit
3336 platforms (found with Coverity Scan).
3337
3338= Version 1.2.13 released 2015-02-16
3339Note: Although PolarSSL has been renamed to mbed TLS, no changes reflecting
3340 this will be made in the 1.2 branch at this point.
3341
3342Security
3343 * Fix remotely-triggerable uninitialised pointer dereference caused by
3344 crafted X.509 certificate (TLS server is not affected if it doesn't ask
3345 for a client certificate) (found using Codenomicon Defensics).
3346 * Fix remotely-triggerable memory leak caused by crafted X.509 certificates
3347 (TLS server is not affected if it doesn't ask for a client certificate)
3348 (found using Codenomicon Defensics).
3349 * Fix potential stack overflow while parsing crafted X.509 certificates
3350 (TLS server is not affected if it doesn't ask for a client certificate)
3351 found using Codenomicon Defensics).
3352 * Fix buffer overread of size 1 when parsing crafted X.509 certificates
3353 (TLS server is not affected if it doesn't ask for a client certificate).
3354
3355Bugfix
3356 * Fix potential undefined behaviour in Camellia.
3357 * Fix memory leaks in PKCS#5 and PKCS#12.
3358 * Stack buffer overflow if ctr_drbg_update() is called with too large
3359 add_len (found by Jean-Philippe Aumasson) (not triggerable remotely).
3360 * Fix bug in MPI/bignum on s390/s390x (reported by Dan Horák) (introduced
3361 in 1.2.12).
3362 * Fix unchecked return code in x509_crt_parse_path() on Windows (found by
3363 Peter Vaskovic).
3364 * Fix assembly selection for MIPS64 (thanks to James Cowgill).
3365 * ssl_get_verify_result() now works even if the handshake was aborted due
3366 to a failed verification (found by Fredrik Axelsson).
3367 * Skip writing and parsing signature_algorithm extension if none of the
3368 key exchanges enabled needs certificates. This fixes a possible interop
3369 issue with some servers when a zero-length extension was sent. (Reported
3370 by Peter Dettman.)
3371 * On a 0-length input, base64_encode() did not correctly set output length
3372 (found by Hendrik van den Boogaard).
3373
3374Changes
3375 * Blind RSA private operations even when POLARSSL_RSA_NO_CRT is defined.
3376 * Forbid repeated extensions in X.509 certificates.
3377 * Add compile-time option POLARSSL_X509_MAX_INTERMEDIATE_CA to limit the
3378 length of an X.509 verification chain (default = 8).
Paul Bakkera6c5ea22014-10-24 16:26:29 +02003379= Version 1.2.12 released 2014-10-24
3380
3381Security
3382 * Remotely-triggerable memory leak when parsing some X.509 certificates
3383 (server is not affected if it doesn't ask for a client certificate).
3384 (Found using Codenomicon Defensics.)
3385
3386Bugfix
3387 * Fix potential bad read in parsing ServerHello (found by Adrien
3388 Vialletelle).
3389 * ssl_close_notify() could send more than one message in some circumstances
3390 with non-blocking I/O.
3391 * x509_crt_parse() did not increase total_failed on PEM error
3392 * Fix compiler warnings on iOS (found by Sander Niemeijer).
3393 * Don't print uninitialised buffer in ssl_mail_client (found by Marc Abel).
3394 * Fix net_accept() regarding non-blocking sockets (found by Luca Pesce).
3395 * ssl_read() could return non-application data records on server while
3396 renegotation was pending, and on client when a HelloRequest was received.
3397 * Fix warnings from Clang's scan-build (contributed by Alfred Klomp).
3398
3399Changes
3400 * X.509 certificates with more than one AttributeTypeAndValue per
3401 RelativeDistinguishedName are not accepted any more.
3402 * ssl_read() now returns POLARSSL_ERR_NET_WANT_READ rather than
3403 POLARSSL_ERR_SSL_UNEXPECTED_MESSAGE on harmless alerts.
3404 * Accept spaces at end of line or end of buffer in base64_decode().
3405
Paul Bakker0ae5a3d2014-07-11 11:28:30 +02003406= Version 1.2.11 released 2014-07-11
3407Features
3408 * Entropy module now supports seed writing and reading
3409
3410Changes
3411 * Introduced POLARSSL_HAVE_READDIR_R for systems without it
3412 * Improvements to the CMake build system, contributed by Julian Ospald.
3413 * Work around a bug of the version of Clang shipped by Apple with Mavericks
3414 that prevented bignum.c from compiling. (Reported by Rafael Baptista.)
3415 * Improvements to tests/Makefile, contributed by Oden Eriksson.
3416 * Use UTC time to check certificate validity.
3417 * Reject certificates with times not in UTC, per RFC 5280.
3418 * Migrate zeroizing of data to polarssl_zeroize() instead of memset()
3419 against unwanted compiler optimizations
3420
3421Security
3422 * Forbid change of server certificate during renegotiation to prevent
3423 "triple handshake" attack when authentication mode is optional (the
3424 attack was already impossible when authentication is required).
3425 * Check notBefore timestamp of certificates and CRLs from the future.
3426 * Forbid sequence number wrapping
3427 * Prevent potential NULL pointer dereference in ssl_read_record() (found by
3428 TrustInSoft)
3429 * Fix length checking for AEAD ciphersuites (found by Codenomicon).
3430 It was possible to crash the server (and client) using crafted messages
3431 when a GCM suite was chosen.
3432
3433Bugfix
3434 * Fixed X.509 hostname comparison (with non-regular characters)
3435 * SSL now gracefully handles missing RNG
3436 * crypt_and_hash app checks MAC before final decryption
3437 * Fixed x509_crt_parse_path() bug on Windows platforms
3438 * Added missing MPI_CHK() around some statements in mpi_div_mpi() (found by
3439 TrustInSoft)
3440 * Fixed potential overflow in certificate size verification in
3441 ssl_write_certificate() (found by TrustInSoft)
3442 * Fix ASM format in bn_mul.h
3443 * Potential memory leak in bignum_selftest()
3444 * Replaced expired test certificate
3445 * ssl_mail_client now terminates lines with CRLF, instead of LF
3446 * Fix bug in RSA PKCS#1 v1.5 "reversed" operations
3447 * Fixed testing with out-of-source builds using cmake
3448 * Fixed version-major intolerance in server
3449 * Fixed CMake symlinking on out-of-source builds
3450 * Bignum's MIPS-32 assembly was used on MIPS-64, causing chaos. (Found by
3451 Alex Wilson.)
3452 * ssl_init() was leaving a dirty pointer in ssl_context if malloc of
3453 out_ctr failed
3454 * ssl_handshake_init() was leaving dirty pointers in subcontexts if malloc
3455 of one of them failed
3456 * x509_get_current_time() uses localtime_r() to prevent thread issues
3457 * Some example server programs were not sending the close_notify alert.
3458 * Potential memory leak in mpi_exp_mod() when error occurs during
3459 calculation of RR.
3460 * Improve interoperability by not writing extension length in ClientHello
3461 when no extensions are present (found by Matthew Page)
3462 * rsa_check_pubkey() now allows an E up to N
3463 * On OpenBSD, use arc4random_buf() instead of rand() to prevent warnings
3464 * mpi_fill_random() was creating numbers larger than requested on
3465 big-endian platform when size was not an integer number of limbs
3466 * Fix detection of DragonflyBSD in net.c (found by Markus Pfeiffer)
3467 * Stricter check on SSL ClientHello internal sizes compared to actual packet
3468 size (found by TrustInSoft)
3469 * Fix preprocessor checks for bn_mul PPC asm (found by Barry K. Nathan).
3470 * Use \n\t rather than semicolons for bn_mul asm, since some assemblers
3471 interpret semicolons as comment delimiters (found by Barry K. Nathan).
3472 * Disable broken Sparc64 bn_mul assembly (found by Florian Obser).
3473 * Fix base64_decode() to return and check length correctly (in case of
3474 tight buffers)
3475
Paul Bakker3a2c0562013-10-07 16:22:05 +02003476= Version 1.2.10 released 2013-10-07
3477Changes
3478 * Changed RSA blinding to a slower but thread-safe version
3479
3480Bugfix
3481 * Fixed memory leak in RSA as a result of introduction of blinding
3482 * Fixed ssl_pkcs11_decrypt() prototype
3483 * Fixed MSVC project files
3484
Paul Bakkerd93d28e2013-10-01 10:12:42 +02003485= Version 1.2.9 released 2013-10-01
Paul Bakkerc13aab12013-09-26 10:12:19 +02003486Changes
3487 * x509_verify() now case insensitive for cn (RFC 6125 6.4)
3488
3489Bugfix
3490 * Fixed potential memory leak when failing to resume a session
3491 * Fixed potential file descriptor leaks (found by Remi Gacogne)
3492 * Minor fixes
3493
3494Security
3495 * Fixed potential heap buffer overflow on large hostname setting
3496 * Fixed potential negative value misinterpretation in load_file()
3497 * RSA blinding on CRT operations to counter timing attacks
3498 (found by Cyril Arnaud and Pierre-Alain Fouque)
3499
Paul Bakkerde656232013-06-24 19:07:34 +02003500= Version 1.2.8 released 2013-06-19
3501Features
3502 * Parsing of PKCS#8 encrypted private key files
3503 * PKCS#12 PBE and derivation functions
3504 * Centralized module option values in config.h to allow user-defined
3505 settings without editing header files by using POLARSSL_CONFIG_OPTIONS
3506
3507Changes
3508 * HAVEGE random generator disabled by default
3509 * Internally split up x509parse_key() into a (PEM) handler function
3510 and specific DER parser functions for the PKCS#1 and unencrypted
3511 PKCS#8 private key formats
3512 * Added mechanism to provide alternative implementations for all
3513 symmetric cipher and hash algorithms (e.g. POLARSSL_AES_ALT in
Darryl Green11999bb2018-03-13 15:22:58 +00003514 config.h)
Paul Bakkerde656232013-06-24 19:07:34 +02003515 * PKCS#5 module added. Moved PBKDF2 functionality inside and deprecated
3516 old PBKDF2 module
3517
3518Bugfix
3519 * Secure renegotiation extension should only be sent in case client
3520 supports secure renegotiation
3521 * Fixed offset for cert_type list in ssl_parse_certificate_request()
3522 * Fixed const correctness issues that have no impact on the ABI
3523 * x509parse_crt() now better handles PEM error situations
3524 * ssl_parse_certificate() now calls x509parse_crt_der() directly
3525 instead of the x509parse_crt() wrapper that can also parse PEM
Darryl Green11999bb2018-03-13 15:22:58 +00003526 certificates
Paul Bakkerde656232013-06-24 19:07:34 +02003527 * x509parse_crtpath() is now reentrant and uses more portable stat()
3528 * Fixed bignum.c and bn_mul.h to support Thumb2 and LLVM compiler
3529 * Fixed values for 2-key Triple DES in cipher layer
3530 * ssl_write_certificate_request() can handle empty ca_chain
3531
3532Security
3533 * A possible DoS during the SSL Handshake, due to faulty parsing of
3534 PEM-encoded certificates has been fixed (found by Jack Lloyd)
3535
3536= Version 1.2.7 released 2013-04-13
3537Features
3538 * Ability to specify allowed ciphersuites based on the protocol version.
3539
3540Changes
3541 * Default Blowfish keysize is now 128-bits
3542 * Test suites made smaller to accommodate Raspberry Pi
3543
3544Bugfix
3545 * Fix for MPI assembly for ARM
3546 * GCM adapted to support sizes > 2^29
3547
Paul Bakker90f042d2013-03-11 11:38:44 +01003548= Version 1.2.6 released 2013-03-11
Paul Bakkerc0463502013-02-14 11:19:38 +01003549Bugfix
3550 * Fixed memory leak in ssl_free() and ssl_reset() for active session
Paul Bakker3d2dc0f2013-02-27 14:52:37 +01003551 * Corrected GCM counter incrementation to use only 32-bits instead of
3552 128-bits (found by Yawning Angel)
Paul Bakkere3e4a592013-02-28 10:20:53 +01003553 * Fixes for 64-bit compilation with MS Visual Studio
Paul Bakker37286a52013-03-06 16:55:11 +01003554 * Fixed net_bind() for specified IP addresses on little endian systems
Paul Bakkerfb1cbd32013-03-06 18:14:52 +01003555 * Fixed assembly code for ARM (Thumb and regular) for some compilers
Paul Bakkerc0463502013-02-14 11:19:38 +01003556
Paul Bakkerb3869132013-02-28 17:21:01 +01003557Changes
3558 * Internally split up rsa_pkcs1_encrypt(), rsa_pkcs1_decrypt(),
3559 rsa_pkcs1_sign() and rsa_pkcs1_verify() to separate PKCS#1 v1.5 and
3560 PKCS#1 v2.1 functions
Paul Bakkera43231c2013-02-28 17:33:49 +01003561 * Added support for custom labels when using rsa_rsaes_oaep_encrypt()
3562 or rsa_rsaes_oaep_decrypt()
Paul Bakker78a8c712013-03-06 17:01:52 +01003563 * Re-added handling for SSLv2 Client Hello when the define
3564 POLARSSL_SSL_SRV_SUPPORT_SSLV2_CLIENT_HELLO is set
Paul Bakkere81beda2013-03-06 17:40:46 +01003565 * The SSL session cache module (ssl_cache) now also retains peer_cert
3566 information (not the entire chain)
Paul Bakkerb3869132013-02-28 17:21:01 +01003567
Paul Bakkere47b34b2013-02-27 14:48:00 +01003568Security
3569 * Removed further timing differences during SSL message decryption in
3570 ssl_decrypt_buf()
Paul Bakker8804f692013-02-28 18:06:26 +01003571 * Removed timing differences due to bad padding from
3572 rsa_rsaes_pkcs1_v15_decrypt() and rsa_pkcs1_decrypt() for PKCS#1 v1.5
3573 operations
Paul Bakkere47b34b2013-02-27 14:48:00 +01003574
Paul Bakkerc7a2da42013-02-02 19:23:57 +01003575= Version 1.2.5 released 2013-02-02
Paul Bakker8fe40dc2013-02-02 12:43:08 +01003576Changes
3577 * Allow enabling of dummy error_strerror() to support some use-cases
Paul Bakkerd66f0702013-01-31 16:57:45 +01003578 * Debug messages about padding errors during SSL message decryption are
Hanno Becker01a0e072017-07-26 11:49:40 +01003579 disabled by default and can be enabled with POLARSSL_SSL_DEBUG_ALL
Paul Bakker40865c82013-01-31 17:13:13 +01003580 * Sending of security-relevant alert messages that do not break
3581 interoperability can be switched on/off with the flag
Paul Bakkera35aa542013-03-06 17:06:21 +01003582 POLARSSL_SSL_ALL_ALERT_MESSAGES
Paul Bakker8fe40dc2013-02-02 12:43:08 +01003583
Paul Bakker45829992013-01-03 14:52:21 +01003584Security
3585 * Removed timing differences during SSL message decryption in
3586 ssl_decrypt_buf() due to badly formatted padding
3587
Paul Bakker14c56a32013-01-25 17:11:37 +01003588= Version 1.2.4 released 2013-01-25
Paul Bakker1961b702013-01-25 14:49:24 +01003589Changes
Paul Bakker68884e32013-01-07 18:20:04 +01003590 * More advanced SSL ciphersuite representation and moved to more dynamic
3591 SSL core
Paul Bakker1961b702013-01-25 14:49:24 +01003592 * Added ssl_handshake_step() to allow single stepping the handshake process
3593
Paul Bakker40628ba2013-01-03 10:50:31 +01003594Bugfix
3595 * Memory leak when using RSA_PKCS_V21 operations fixed
Paul Bakker21dca692013-01-03 11:41:08 +01003596 * Handle future version properly in ssl_write_certificate_request()
Paul Bakker9c94cdd2013-01-22 13:45:33 +01003597 * Correctly handle CertificateRequest message in client for <= TLS 1.1
3598 without DN list
Paul Bakker40628ba2013-01-03 10:50:31 +01003599
Paul Bakkerfb1ba782012-11-26 16:28:25 +01003600= Version 1.2.3 released 2012-11-26
3601Bugfix
3602 * Server not always sending correct CertificateRequest message
3603
Paul Bakkerdf5069c2012-11-24 12:20:19 +01003604= Version 1.2.2 released 2012-11-24
Paul Bakkere667c982012-11-20 13:50:22 +01003605Changes
3606 * Added p_hw_data to ssl_context for context specific hardware acceleration
3607 data
Hanno Becker01a0e072017-07-26 11:49:40 +01003608 * During verify trust-CA is only checked for expiration and CRL presence
Paul Bakkere667c982012-11-20 13:50:22 +01003609
Paul Bakker7c90da92012-11-23 14:02:40 +01003610Bugfixes
Paul Bakkerdf5069c2012-11-24 12:20:19 +01003611 * Fixed client authentication compatibility
3612 * Fixed dependency on POLARSSL_SHA4_C in SSL modules
Paul Bakker7c90da92012-11-23 14:02:40 +01003613
Paul Bakker14926332012-11-20 10:58:09 +01003614= Version 1.2.1 released 2012-11-20
Paul Bakker34d8dbc2012-11-14 12:11:38 +00003615Changes
3616 * Depth that the certificate verify callback receives is now numbered
3617 bottom-up (Peer cert depth is 0)
3618
Paul Bakker7a2538e2012-11-02 10:59:36 +00003619Bugfixes
3620 * Fixes for MSVC6
Paul Bakkerd9374b02012-11-02 11:02:58 +00003621 * Moved mpi_inv_mod() outside POLARSSL_GENPRIME
Paul Bakkerf02c5642012-11-13 10:25:21 +00003622 * Allow R and A to point to same mpi in mpi_div_mpi (found by Manuel
3623 Pégourié-Gonnard)
Manuel Pégourié-Gonnarde44ec102012-11-17 12:42:51 +01003624 * Fixed possible segfault in mpi_shift_r() (found by Manuel
3625 Pégourié-Gonnard)
Paul Bakker9daf0d02012-11-13 12:13:27 +00003626 * Added max length check for rsa_pkcs1_sign with PKCS#1 v2.1
Paul Bakker7a2538e2012-11-02 10:59:36 +00003627
Paul Bakkerc9c5df92012-10-31 13:55:27 +00003628= Version 1.2.0 released 2012-10-31
Paul Bakkerfab5c822012-02-06 16:45:10 +00003629Features
3630 * Added support for NULL cipher (POLARSSL_CIPHER_NULL_CIPHER) and weak
3631 ciphersuites (POLARSSL_ENABLE_WEAK_CIPHERSUITES). They are disabled by
3632 default!
Paul Bakkera8cd2392012-02-11 16:09:32 +00003633 * Added support for wildcard certificates
3634 * Added support for multi-domain certificates through the X509 Subject
3635 Alternative Name extension
Paul Bakkerbdb912d2012-02-13 23:11:30 +00003636 * Added preliminary ASN.1 buffer writing support
3637 * Added preliminary X509 Certificate Request writing support
3638 * Added key_app_writer example application
3639 * Added cert_req example application
Paul Bakker89e80c92012-03-20 13:50:09 +00003640 * Added base Galois Counter Mode (GCM) for AES
Paul Bakker48916f92012-09-16 19:57:18 +00003641 * Added TLS 1.2 support (RFC 5246)
Paul Bakkerca4ab492012-04-18 14:23:57 +00003642 * Added GCM suites to TLS 1.2 (RFC 5288)
Paul Bakker01cc3942012-05-08 08:36:15 +00003643 * Added commandline error code convertor (util/strerror)
Paul Bakker05ef8352012-05-08 09:17:57 +00003644 * Added support for Hardware Acceleration hooking in SSL/TLS
Paul Bakkere6ee41f2012-05-19 08:43:48 +00003645 * Added OpenSSL / PolarSSL compatibility script (tests/compat.sh) and
Paul Bakkerc9c5df92012-10-31 13:55:27 +00003646 example application (programs/ssl/o_p_test) (requires OpenSSL)
Paul Bakker8d914582012-06-04 12:46:42 +00003647 * Added X509 CA Path support
Paul Bakker4f9a7bb2012-07-02 08:36:36 +00003648 * Added Thumb assembly optimizations
Paul Bakker2770fbd2012-07-03 13:30:23 +00003649 * Added DEFLATE compression support as per RFC3749 (requires zlib)
Paul Bakker6132d0a2012-07-04 17:10:40 +00003650 * Added blowfish algorithm (Generic and cipher layer)
Paul Bakkerf518b162012-08-23 13:03:18 +00003651 * Added PKCS#5 PBKDF2 key derivation function
Paul Bakker48916f92012-09-16 19:57:18 +00003652 * Added Secure Renegotiation (RFC 5746)
Paul Bakker29b64762012-09-25 09:36:44 +00003653 * Added predefined DHM groups from RFC 5114
Paul Bakker0a597072012-09-25 21:55:46 +00003654 * Added simple SSL session cache implementation
Paul Bakker5701cdc2012-09-27 21:49:42 +00003655 * Added ServerName extension parsing (SNI) at server side
Paul Bakker1d29fb52012-09-28 13:28:45 +00003656 * Added option to add minimum accepted SSL/TLS protocol version
Paul Bakkerfab5c822012-02-06 16:45:10 +00003657
Paul Bakker1504af52012-02-11 16:17:43 +00003658Changes
3659 * Removed redundant POLARSSL_DEBUG_MSG define
Paul Bakker048d04e2012-02-12 17:31:04 +00003660 * AES code only check for Padlock once
Paul Bakker6b906e52012-05-08 12:01:43 +00003661 * Fixed const-correctness mpi_get_bit()
3662 * Documentation for mpi_lsb() and mpi_msb()
Paul Bakker186751d2012-05-08 13:16:14 +00003663 * Moved out_msg to out_hdr + 32 to support hardware acceleration
Paul Bakker4d2c1242012-05-10 14:12:46 +00003664 * Changed certificate verify behaviour to comply with RFC 6125 section 6.3
Paul Bakker5b377842012-05-16 07:57:36 +00003665 to not match CN if subjectAltName extension is present (Closes ticket #56)
Paul Bakker6132d0a2012-07-04 17:10:40 +00003666 * Cipher layer cipher_mode_t POLARSSL_MODE_CFB128 is renamed to
3667 POLARSSL_MODE_CFB, to also handle different block size CFB modes.
Paul Bakkerec636f32012-09-09 19:17:02 +00003668 * Removed handling for SSLv2 Client Hello (as per RFC 5246 recommendation)
Paul Bakker0a597072012-09-25 21:55:46 +00003669 * Revamped session resumption handling
Paul Bakkereb2c6582012-09-27 19:15:01 +00003670 * Generalized external private key implementation handling (like PKCS#11)
3671 in SSL/TLS
Paul Bakker915275b2012-09-28 07:10:55 +00003672 * Revamped x509_verify() and the SSL f_vrfy callback implementations
Paul Bakker5c2364c2012-10-01 14:41:15 +00003673 * Moved from unsigned long to fixed width uint32_t types throughout code
Paul Bakker645ce3a2012-10-31 12:32:41 +00003674 * Renamed ciphersuites naming scheme to IANA reserved names
Paul Bakker1504af52012-02-11 16:17:43 +00003675
Paul Bakker37824582012-03-22 14:10:22 +00003676Bugfix
Paul Bakker7beceb22012-03-22 14:19:49 +00003677 * Fixed handling error in mpi_cmp_mpi() on longer B values (found by
3678 Hui Dong)
Paul Bakker430ffbe2012-05-01 08:14:20 +00003679 * Fixed potential heap corruption in x509_name allocation
Paul Bakker5b377842012-05-16 07:57:36 +00003680 * Fixed single RSA test that failed on Big Endian systems (Closes ticket #54)
Paul Bakkerf6198c12012-05-16 08:02:29 +00003681 * mpi_exp_mod() now correctly handles negative base numbers (Closes ticket
3682 #52)
Paul Bakkere6ee41f2012-05-19 08:43:48 +00003683 * Handle encryption with private key and decryption with public key as per
Darryl Green11999bb2018-03-13 15:22:58 +00003684 RFC 2313
Paul Bakkercefb3962012-06-27 11:51:09 +00003685 * Handle empty certificate subject names
Paul Bakker535e97d2012-08-23 10:49:55 +00003686 * Prevent reading over buffer boundaries on X509 certificate parsing
Paul Bakkerd4c2bd72012-09-16 21:35:30 +00003687 * mpi_add_abs() now correctly handles adding short numbers to long numbers
Paul Bakker995a2152012-09-25 08:19:56 +00003688 with carry rollover (found by Ruslan Yushchenko)
Paul Bakkerb00ca422012-09-25 12:10:00 +00003689 * Handle existence of OpenSSL Trust Extensions at end of X.509 DER blob
Paul Bakker4f024b72012-10-30 07:29:57 +00003690 * Fixed MPI assembly for SPARC64 platform
Paul Bakker37824582012-03-22 14:10:22 +00003691
Paul Bakker452d5322012-04-05 12:07:34 +00003692Security
Paul Bakker3c16db92012-07-05 13:58:08 +00003693 * Fixed potential memory zeroization on miscrafted RSA key (found by Eloi
3694 Vanderbeken)
Paul Bakker452d5322012-04-05 12:07:34 +00003695
Paul Bakkerd93d28e2013-10-01 10:12:42 +02003696= Version 1.1.8 released on 2013-10-01
Paul Bakkerc13aab12013-09-26 10:12:19 +02003697Bugfix
3698 * Fixed potential memory leak when failing to resume a session
3699 * Fixed potential file descriptor leaks
3700
3701Security
3702 * Potential buffer-overflow for ssl_read_record() (independently found by
3703 both TrustInSoft and Paul Brodeur of Leviathan Security Group)
3704 * Potential negative value misinterpretation in load_file()
3705 * Potential heap buffer overflow on large hostname setting
3706
Paul Bakker248fff52013-06-24 19:08:50 +02003707= Version 1.1.7 released on 2013-06-19
3708Changes
3709 * HAVEGE random generator disabled by default
3710
3711Bugfix
3712 * x509parse_crt() now better handles PEM error situations
3713 * ssl_parse_certificate() now calls x509parse_crt_der() directly
3714 instead of the x509parse_crt() wrapper that can also parse PEM
Darryl Green11999bb2018-03-13 15:22:58 +00003715 certificates
Paul Bakker248fff52013-06-24 19:08:50 +02003716 * Fixed values for 2-key Triple DES in cipher layer
3717 * ssl_write_certificate_request() can handle empty ca_chain
3718
3719Security
3720 * A possible DoS during the SSL Handshake, due to faulty parsing of
3721 PEM-encoded certificates has been fixed (found by Jack Lloyd)
3722
3723= Version 1.1.6 released on 2013-03-11
3724Bugfix
3725 * Fixed net_bind() for specified IP addresses on little endian systems
3726
3727Changes
3728 * Allow enabling of dummy error_strerror() to support some use-cases
3729 * Debug messages about padding errors during SSL message decryption are
3730 disabled by default and can be enabled with POLARSSL_SSL_DEBUG_ALL
3731
3732Security
3733 * Removed timing differences during SSL message decryption in
3734 ssl_decrypt_buf()
3735 * Removed timing differences due to bad padding from
3736 rsa_rsaes_pkcs1_v15_decrypt() and rsa_pkcs1_decrypt() for PKCS#1 v1.5
3737 operations
3738
Paul Bakker9d2bb652013-01-25 16:07:49 +01003739= Version 1.1.5 released on 2013-01-16
3740Bugfix
3741 * Fixed MPI assembly for SPARC64 platform
3742 * Handle existence of OpenSSL Trust Extensions at end of X.509 DER blob
3743 * mpi_add_abs() now correctly handles adding short numbers to long numbers
3744 with carry rollover
3745 * Moved mpi_inv_mod() outside POLARSSL_GENPRIME
3746 * Prevent reading over buffer boundaries on X509 certificate parsing
3747 * mpi_exp_mod() now correctly handles negative base numbers (Closes ticket
3748 #52)
3749 * Fixed possible segfault in mpi_shift_r() (found by Manuel
3750 Pégourié-Gonnard)
3751 * Allow R and A to point to same mpi in mpi_div_mpi (found by Manuel
3752 Pégourié-Gonnard)
3753 * Added max length check for rsa_pkcs1_sign with PKCS#1 v2.1
3754 * Memory leak when using RSA_PKCS_V21 operations fixed
3755 * Handle encryption with private key and decryption with public key as per
3756 RFC 2313
3757 * Fixes for MSVC6
3758
3759Security
3760 * Fixed potential memory zeroization on miscrafted RSA key (found by Eloi
3761 Vanderbeken)
3762
Paul Bakkerd5834bb2012-10-02 14:38:56 +00003763= Version 1.1.4 released on 2012-05-31
3764Bugfix
3765 * Correctly handle empty SSL/TLS packets (Found by James Yonan)
3766 * Fixed potential heap corruption in x509_name allocation
3767 * Fixed single RSA test that failed on Big Endian systems (Closes ticket #54)
3768
Paul Bakkerfad38932012-05-08 09:04:04 +00003769= Version 1.1.3 released on 2012-04-29
3770Bugfix
3771 * Fixed random MPI generation to not generate more size than requested.
3772
3773= Version 1.1.2 released on 2012-04-26
3774Bugfix
3775 * Fixed handling error in mpi_cmp_mpi() on longer B values (found by
3776 Hui Dong)
3777
3778Security
3779 * Fixed potential memory corruption on miscrafted client messages (found by
3780 Frama-C team at CEA LIST)
3781 * Fixed generation of DHM parameters to correct length (found by Ruslan
3782 Yushchenko)
3783
Paul Bakker99955bf2012-01-23 09:31:41 +00003784= Version 1.1.1 released on 2012-01-23
Paul Bakkerb15b8512012-01-13 13:44:06 +00003785Bugfix
3786 * Check for failed malloc() in ssl_set_hostname() and x509_get_entries()
3787 (Closes ticket #47, found by Hugo Leisink)
Paul Bakker2ec0a562012-01-21 05:41:23 +00003788 * Fixed issues with Intel compiler on 64-bit systems (Closes ticket #50)
Paul Bakker99955bf2012-01-23 09:31:41 +00003789 * Fixed multiple compiler warnings for VS6 and armcc
3790 * Fixed bug in CTR_CRBG selftest
Paul Bakkerb15b8512012-01-13 13:44:06 +00003791
Paul Bakker08a50882011-12-22 09:43:57 +00003792= Version 1.1.0 released on 2011-12-22
Paul Bakker7eb013f2011-10-06 12:37:39 +00003793Features
3794 * Added ssl_session_reset() to allow better multi-connection pools of
3795 SSL contexts without needing to set all non-connection-specific
Darryl Green11999bb2018-03-13 15:22:58 +00003796 data and pointers again. Adapted ssl_server to use this functionality.
Paul Bakker490ecc82011-10-06 13:04:09 +00003797 * Added ssl_set_max_version() to allow clients to offer a lower maximum
3798 supported version to a server to help buggy server implementations.
Darryl Green11999bb2018-03-13 15:22:58 +00003799 (Closes ticket #36)
Paul Bakker03a30d32011-11-11 10:55:02 +00003800 * Added cipher_get_cipher_mode() and cipher_get_cipher_operation()
3801 introspection functions (Closes ticket #40)
Paul Bakker0e04d0e2011-11-27 14:46:59 +00003802 * Added CTR_DRBG based on AES-256-CTR (NIST SP 800-90) random generator
Paul Bakker6083fd22011-12-03 21:45:14 +00003803 * Added a generic entropy accumulator that provides support for adding
3804 custom entropy sources and added some generic and platform dependent
Darryl Green11999bb2018-03-13 15:22:58 +00003805 entropy sources
Paul Bakker7eb013f2011-10-06 12:37:39 +00003806
Paul Bakkerca6f3e22011-10-06 13:11:08 +00003807Changes
3808 * Documentation for AES and Camellia in modes CTR and CFB128 clarified.
Paul Bakkerd246ed32011-10-06 13:18:27 +00003809 * Fixed rsa_encrypt and rsa_decrypt examples to use public key for
3810 encryption and private key for decryption. (Closes ticket #34)
Paul Bakkerc4909d92011-10-12 09:52:22 +00003811 * Inceased maximum size of ASN1 length reads to 32-bits.
Paul Bakkerfbc09f32011-10-12 09:56:41 +00003812 * Added an EXPLICIT tag number parameter to x509_get_ext()
Paul Bakkerb5a11ab2011-10-12 09:58:41 +00003813 * Added a separate CRL entry extension parsing function
Paul Bakkerefc30292011-11-10 14:43:23 +00003814 * Separated the ASN.1 parsing code from the X.509 specific parsing code.
3815 So now there is a module that is controlled with POLARSSL_ASN1_PARSE_C.
Paul Bakker5e18aed2011-11-15 15:38:45 +00003816 * Changed the defined key-length of DES ciphers in cipher.h to include the
3817 parity bits, to prevent mistakes in copying data. (Closes ticket #33)
Paul Bakkercce9d772011-11-18 14:26:47 +00003818 * Loads of minimal changes to better support WINCE as a build target
Paul Bakker2e6d5322011-11-18 14:34:17 +00003819 (Credits go to Marco Lizza)
Paul Bakkerb6d5f082011-11-25 11:52:11 +00003820 * Added POLARSSL_MPI_WINDOW_SIZE definition to allow easier time to memory
3821 trade-off
Paul Bakkerfe3256e2011-11-25 12:11:43 +00003822 * Introduced POLARSSL_MPI_MAX_SIZE and POLARSSL_MPI_MAX_BITS for MPI size
3823 management (Closes ticket #44)
Paul Bakkera3d195c2011-11-27 21:07:34 +00003824 * Changed the used random function pointer to more flexible format. Renamed
3825 havege_rand() to havege_random() to prevent mistakes. Lots of changes as
Paul Bakkera35aa542013-03-06 17:06:21 +01003826 a consequence in library code and programs
Paul Bakker508ad5a2011-12-04 17:09:26 +00003827 * Moved all examples programs to use the new entropy and CTR_DRBG
Paul Bakker6c0ceb32011-12-04 12:24:18 +00003828 * Added permissive certificate parsing to x509parse_crt() and
3829 x509parse_crtfile(). With permissive parsing the parsing does not stop on
Paul Bakkera35aa542013-03-06 17:06:21 +01003830 encountering a parse-error. Beware that the meaning of return values has
3831 changed!
Paul Bakker69e095c2011-12-10 21:55:01 +00003832 * All error codes are now negative. Even on mermory failures and IO errors.
Paul Bakkerca6f3e22011-10-06 13:11:08 +00003833
Paul Bakkerfa1c5922011-10-06 14:18:49 +00003834Bugfix
3835 * Fixed faulty HMAC-MD2 implementation. Found by dibac. (Closes
3836 ticket #37)
Paul Bakker3329d1f2011-10-12 09:55:01 +00003837 * Fixed a bug where the CRL parser expected an EXPLICIT ASN.1 tag
3838 before version numbers
Paul Bakkercebdf172011-11-11 15:01:31 +00003839 * Allowed X509 key usage parsing to accept 4 byte values instead of the
3840 standard 1 byte version sometimes used by Microsoft. (Closes ticket #38)
Paul Bakker1fe7d9b2011-11-15 15:26:03 +00003841 * Fixed incorrect behaviour in case of RSASSA-PSS with a salt length
3842 smaller than the hash length. (Closes ticket #41)
Paul Bakker03c7c252011-11-25 12:37:37 +00003843 * If certificate serial is longer than 32 octets, serial number is now
3844 appended with '....' after first 28 octets
Paul Bakker44637402011-11-26 09:23:07 +00003845 * Improved build support for s390x and sparc64 in bignum.h
Paul Bakker4f5ae802011-12-04 22:10:28 +00003846 * Fixed MS Visual C++ name clash with int64 in sha4.h
Paul Bakkerc50132d2011-12-05 14:38:36 +00003847 * Corrected removal of leading "00:" in printing serial numbers in
Paul Bakkerc8ffbe72011-12-05 14:22:49 +00003848 certificates and CRLs
Paul Bakkerfa1c5922011-10-06 14:18:49 +00003849
Paul Bakker968bc982011-07-27 17:03:00 +00003850= Version 1.0.0 released on 2011-07-27
Paul Bakker343a8702011-06-09 14:27:58 +00003851Features
3852 * Expanded cipher layer with support for CFB128 and CTR mode
Paul Bakker7bc05ff2011-08-09 10:30:36 +00003853 * Added rsa_encrypt and rsa_decrypt simple example programs.
Paul Bakker343a8702011-06-09 14:27:58 +00003854
Paul Bakker42e59812011-06-09 15:55:41 +00003855Changes
3856 * The generic cipher and message digest layer now have normal error
3857 codes instead of integers
3858
Paul Bakker887bd502011-06-08 13:10:54 +00003859Bugfix
3860 * Undid faulty bug fix in ssl_write() when flushing old data (Ticket
3861 #18)
3862
Paul Bakker828acb22011-05-27 09:25:42 +00003863= Version 0.99-pre5 released on 2011-05-26
Paul Bakkerb6ecaf52011-04-19 14:29:23 +00003864Features
3865 * Added additional Cipher Block Modes to symmetric ciphers
3866 (AES CTR, Camellia CTR, XTEA CBC) including the option to
Paul Bakkera35aa542013-03-06 17:06:21 +01003867 enable and disable individual modes when needed
Paul Bakker335db3f2011-04-25 15:28:35 +00003868 * Functions requiring File System functions can now be disabled
3869 by undefining POLARSSL_FS_IO
Paul Bakker9d781402011-05-09 16:17:09 +00003870 * A error_strerror function() has been added to translate between
3871 error codes and their description.
Paul Bakker2f5947e2011-05-18 15:47:11 +00003872 * Added mpi_get_bit() and mpi_set_bit() individual bit setter/getter
3873 functions.
Paul Bakker1496d382011-05-23 12:07:29 +00003874 * Added ssl_mail_client and ssl_fork_server as example programs.
Paul Bakkerb6ecaf52011-04-19 14:29:23 +00003875
Paul Bakker23986e52011-04-24 08:57:21 +00003876Changes
3877 * Major argument / variable rewrite. Introduced use of size_t
3878 instead of int for buffer lengths and loop variables for
Paul Bakkera35aa542013-03-06 17:06:21 +01003879 better unsigned / signed use. Renamed internal bigint types
3880 t_int and t_dbl to t_uint and t_udbl in the process
Paul Bakker6c591fa2011-05-05 11:49:20 +00003881 * mpi_init() and mpi_free() now only accept a single MPI
3882 argument and do not accept variable argument lists anymore.
Paul Bakker9d781402011-05-09 16:17:09 +00003883 * The error codes have been remapped and combining error codes
3884 is now done with a PLUS instead of an OR as error codes
Paul Bakkera35aa542013-03-06 17:06:21 +01003885 used are negative.
Paul Bakker831a7552011-05-18 13:32:51 +00003886 * Changed behaviour of net_read(), ssl_fetch_input() and ssl_recv().
3887 net_recv() now returns 0 on EOF instead of
Paul Bakkera35aa542013-03-06 17:06:21 +01003888 POLARSSL_ERR_NET_CONN_RESET. ssl_fetch_input() returns
3889 POLARSSL_ERR_SSL_CONN_EOF on an EOF from its f_recv() function.
3890 ssl_read() returns 0 if a POLARSSL_ERR_SSL_CONN_EOF is received
3891 after the handshake.
Paul Bakker831a7552011-05-18 13:32:51 +00003892 * Network functions now return POLARSSL_ERR_NET_WANT_READ or
3893 POLARSSL_ERR_NET_WANT_WRITE instead of the ambiguous
Paul Bakkera35aa542013-03-06 17:06:21 +01003894 POLARSSL_ERR_NET_TRY_AGAIN
Paul Bakker23986e52011-04-24 08:57:21 +00003895
Paul Bakker3efa5752011-04-01 12:23:26 +00003896= Version 0.99-pre4 released on 2011-04-01
Paul Bakker9dcc3222011-03-08 14:16:06 +00003897Features
3898 * Added support for PKCS#1 v2.1 encoding and thus support
3899 for the RSAES-OAEP and RSASSA-PSS operations.
Paul Bakkere77db2e2011-03-25 14:01:32 +00003900 * Reading of Public Key files incorporated into default x509
3901 functionality as well.
Paul Bakker287781a2011-03-26 13:18:49 +00003902 * Added mpi_fill_random() for centralized filling of big numbers
3903 with random data (Fixed ticket #10)
Paul Bakker9dcc3222011-03-08 14:16:06 +00003904
Paul Bakkerbe4e7dc2011-03-14 20:41:31 +00003905Changes
Hanno Becker01a0e072017-07-26 11:49:40 +01003906 * Debug print of MPI now removes leading zero octets and
Paul Bakkerbe4e7dc2011-03-14 20:41:31 +00003907 displays actual bit size of the value.
Hanno Becker01a0e072017-07-26 11:49:40 +01003908 * x509parse_key() (and as a consequence x509parse_keyfile())
Paul Bakker98675492011-03-26 13:17:12 +00003909 does not zeroize memory in advance anymore. Use rsa_init()
Paul Bakkera35aa542013-03-06 17:06:21 +01003910 before parsing a key or keyfile!
Paul Bakkerbe4e7dc2011-03-14 20:41:31 +00003911
3912Bugfix
3913 * Debug output of MPI's now the same independent of underlying
3914 platform (32-bit / 64-bit) (Fixes ticket #19, found by Mads
Paul Bakkera35aa542013-03-06 17:06:21 +01003915 Kiilerich and Mihai Militaru)
Paul Bakker1fd00bf2011-03-14 20:50:15 +00003916 * Fixed bug in ssl_write() when flushing old data (Fixed ticket
3917 #18, found by Nikolay Epifanov)
Paul Bakkere77db2e2011-03-25 14:01:32 +00003918 * Fixed proper handling of RSASSA-PSS verification with variable
3919 length salt lengths
Paul Bakkerbe4e7dc2011-03-14 20:41:31 +00003920
Paul Bakker345a6fe2011-02-28 21:20:02 +00003921= Version 0.99-pre3 released on 2011-02-28
3922This release replaces version 0.99-pre2 which had possible copyright issues.
Paul Bakker96743fc2011-02-12 14:30:57 +00003923Features
3924 * Parsing PEM private keys encrypted with DES and AES
3925 are now supported as well (Fixes ticket #5)
Paul Bakkera9507c02011-02-12 15:27:28 +00003926 * Added crl_app program to allow easy reading and
3927 printing of X509 CRLs from file
Paul Bakker96743fc2011-02-12 14:30:57 +00003928
3929Changes
Hanno Becker01a0e072017-07-26 11:49:40 +01003930 * Parsing of PEM files moved to separate module (Fixes
Paul Bakker96743fc2011-02-12 14:30:57 +00003931 ticket #13). Also possible to remove PEM support for
Paul Bakkera35aa542013-03-06 17:06:21 +01003932 systems only using DER encoding
Paul Bakker96743fc2011-02-12 14:30:57 +00003933
Paul Bakker400ff6f2011-02-20 10:40:16 +00003934Bugfixes
3935 * Corrected parsing of UTCTime dates before 1990 and
3936 after 1950
3937 * Support more exotic OID's when parsing certificates
Darryl Green11999bb2018-03-13 15:22:58 +00003938 (found by Mads Kiilerich)
Paul Bakker400ff6f2011-02-20 10:40:16 +00003939 * Support more exotic name representations when parsing
Paul Bakkere2a39cc2011-02-20 13:49:27 +00003940 certificates (found by Mads Kiilerich)
Paul Bakker400ff6f2011-02-20 10:40:16 +00003941 * Replaced the expired test certificates
Paul Bakkere2a39cc2011-02-20 13:49:27 +00003942 * Do not bail out if no client certificate specified. Try
3943 to negotiate anonymous connection (Fixes ticket #12,
Paul Bakkera35aa542013-03-06 17:06:21 +01003944 found by Boris Krasnovskiy)
Paul Bakker400ff6f2011-02-20 10:40:16 +00003945
Paul Bakker345a6fe2011-02-28 21:20:02 +00003946Security fixes
3947 * Fixed a possible Man-in-the-Middle attack on the
3948 Diffie Hellman key exchange (thanks to Larry Highsmith,
Paul Bakkera35aa542013-03-06 17:06:21 +01003949 Subreption LLC)
Paul Bakker345a6fe2011-02-28 21:20:02 +00003950
Paul Bakker9fc46592011-01-30 16:59:02 +00003951= Version 0.99-pre1 released on 2011-01-30
Paul Bakker37ca75d2011-01-06 12:28:03 +00003952Features
Paul Bakkerb63b0af2011-01-13 17:54:59 +00003953Note: Most of these features have been donated by Fox-IT
3954 * Added Doxygen source code documentation parts
Paul Bakker1b57b062011-01-06 15:48:19 +00003955 * Added reading of DHM context from memory and file
Paul Bakker74111d32011-01-15 16:57:55 +00003956 * Improved X509 certificate parsing to include extended
Paul Bakker76fd75a2011-01-16 21:12:10 +00003957 certificate fields, including Key Usage
3958 * Improved certificate verification and verification
3959 against the available CRLs
Paul Bakker1f87fb62011-01-15 17:32:24 +00003960 * Detection for DES weak keys and parity bits added
Paul Bakker72f62662011-01-16 21:27:44 +00003961 * Improvements to support integration in other
3962 applications:
3963 + Added generic message digest and cipher wrapper
3964 + Improved information about current capabilities,
3965 status, objects and configuration
3966 + Added verification callback on certificate chain
3967 verification to allow external blacklisting
Darryl Green11999bb2018-03-13 15:22:58 +00003968 + Additional example programs to show usage
Paul Bakker43b7e352011-01-18 15:27:19 +00003969 * Added support for PKCS#11 through the use of the
3970 libpkcs11-helper library
Paul Bakker37ca75d2011-01-06 12:28:03 +00003971
Paul Bakkerb6194992011-01-16 21:40:22 +00003972Changes
3973 * x509parse_time_expired() checks time in addition to
3974 the existing date check
Paul Bakkere3166ce2011-01-27 17:40:50 +00003975 * The ciphers member of ssl_context and the cipher member
3976 of ssl_session have been renamed to ciphersuites and
Paul Bakkera35aa542013-03-06 17:06:21 +01003977 ciphersuite respectively. This clarifies the difference
3978 with the generic cipher layer and is better naming
3979 altogether
Paul Bakkerb6194992011-01-16 21:40:22 +00003980
Paul Bakker99ed6782011-01-05 14:48:42 +00003981= Version 0.14.0 released on 2010-08-16
3982Features
3983 * Added support for SSL_EDH_RSA_AES_128_SHA and
3984 SSL_EDH_RSA_CAMELLIA_128_SHA ciphersuites
3985 * Added compile-time and run-time version information
3986 * Expanded ssl_client2 arguments for more flexibility
3987 * Added support for TLS v1.1
3988
3989Changes
3990 * Made Makefile cleaner
3991 * Removed dependency on rand() in rsa_pkcs1_encrypt().
3992 Now using random fuction provided to function and
Paul Bakkera35aa542013-03-06 17:06:21 +01003993 changed the prototype of rsa_pkcs1_encrypt(),
3994 rsa_init() and rsa_gen_key().
Paul Bakker99ed6782011-01-05 14:48:42 +00003995 * Some SSL defines were renamed in order to avoid
3996 future confusion
3997
3998Bug fixes
3999 * Fixed CMake out of source build for tests (found by
4000 kkert)
4001 * rsa_check_private() now supports PKCS1v2 keys as well
4002 * Fixed deadlock in rsa_pkcs1_encrypt() on failing random
4003 generator
4004
4005= Version 0.13.1 released on 2010-03-24
4006Bug fixes
4007 * Fixed Makefile in library that was mistakenly merged
4008 * Added missing const string fixes
4009
4010= Version 0.13.0 released on 2010-03-21
4011Features
4012 * Added option parsing for host and port selection to
4013 ssl_client2
4014 * Added support for GeneralizedTime in X509 parsing
4015 * Added cert_app program to allow easy reading and
4016 printing of X509 certificates from file or SSL
4017 connection.
4018
4019Changes
4020 * Added const correctness for main code base
4021 * X509 signature algorithm determination is now
4022 in a function to allow easy future expansion
4023 * Changed symmetric cipher functions to
4024 identical interface (returning int result values)
Paul Bakker60b1d102013-10-29 10:02:51 +01004025 * Changed ARC4 to use separate input/output buffer
Paul Bakker99ed6782011-01-05 14:48:42 +00004026 * Added reset function for HMAC context as speed-up
4027 for specific use-cases
4028
4029Bug fixes
4030 * Fixed bug resulting in failure to send the last
4031 certificate in the chain in ssl_write_certificate() and
4032 ssl_write_certificate_request() (found by fatbob)
4033 * Added small fixes for compiler warnings on a Mac
4034 (found by Frank de Brabander)
4035 * Fixed algorithmic bug in mpi_is_prime() (found by
4036 Smbat Tonoyan)
4037
4038= Version 0.12.1 released on 2009-10-04
4039Changes
4040 * Coverage test definitions now support 'depends_on'
4041 tagging system.
4042 * Tests requiring specific hashing algorithms now honor
4043 the defines.
4044
4045Bug fixes
4046 * Changed typo in #ifdef in x509parse.c (found
4047 by Eduardo)
4048
4049= Version 0.12.0 released on 2009-07-28
4050Features
4051 * Added CMake makefiles as alternative to regular Makefiles.
4052 * Added preliminary Code Coverage tests for AES, ARC4,
4053 Base64, MPI, SHA-family, MD-family, HMAC-SHA-family,
4054 Camellia, DES, 3-DES, RSA PKCS#1, XTEA, Diffie-Hellman
4055 and X509parse.
4056
4057Changes
4058 * Error codes are not (necessarily) negative. Keep
4059 this is mind when checking for errors.
4060 * RSA_RAW renamed to SIG_RSA_RAW for consistency.
4061 * Fixed typo in name of POLARSSL_ERR_RSA_OUTPUT_TOO_LARGE.
4062 * Changed interface for AES and Camellia setkey functions
4063 to indicate invalid key lengths.
4064
4065Bug fixes
4066 * Fixed include location of endian.h on FreeBSD (found by
4067 Gabriel)
4068 * Fixed include location of endian.h and name clash on
4069 Apples (found by Martin van Hensbergen)
4070 * Fixed HMAC-MD2 by modifying md2_starts(), so that the
4071 required HMAC ipad and opad variables are not cleared.
4072 (found by code coverage tests)
Hanno Becker01a0e072017-07-26 11:49:40 +01004073 * Prevented use of long long in bignum if
Paul Bakker99ed6782011-01-05 14:48:42 +00004074 POLARSSL_HAVE_LONGLONG not defined (found by Giles
4075 Bathgate).
4076 * Fixed incorrect handling of negative strings in
4077 mpi_read_string() (found by code coverage tests).
4078 * Fixed segfault on handling empty rsa_context in
4079 rsa_check_pubkey() and rsa_check_privkey() (found by
4080 code coverage tests).
4081 * Fixed incorrect handling of one single negative input
4082 value in mpi_add_abs() (found by code coverage tests).
4083 * Fixed incorrect handling of negative first input
4084 value in mpi_sub_abs() (found by code coverage tests).
4085 * Fixed incorrect handling of negative first input
4086 value in mpi_mod_mpi() and mpi_mod_int(). Resulting
4087 change also affects mpi_write_string() (found by code
4088 coverage tests).
4089 * Corrected is_prime() results for 0, 1 and 2 (found by
4090 code coverage tests).
4091 * Fixed Camellia and XTEA for 64-bit Windows systems.
4092
4093= Version 0.11.1 released on 2009-05-17
4094 * Fixed missing functionality for SHA-224, SHA-256, SHA384,
4095 SHA-512 in rsa_pkcs1_sign()
4096
4097= Version 0.11.0 released on 2009-05-03
4098 * Fixed a bug in mpi_gcd() so that it also works when both
4099 input numbers are even and added testcases to check
4100 (found by Pierre Habouzit).
4101 * Added support for SHA-224, SHA-256, SHA-384 and SHA-512
4102 one way hash functions with the PKCS#1 v1.5 signing and
4103 verification.
4104 * Fixed minor bug regarding mpi_gcd located within the
4105 POLARSSL_GENPRIME block.
4106 * Fixed minor memory leak in x509parse_crt() and added better
4107 handling of 'full' certificate chains (found by Mathias
4108 Olsson).
4109 * Centralized file opening and reading for x509 files into
4110 load_file()
4111 * Made definition of net_htons() endian-clean for big endian
4112 systems (Found by Gernot).
4113 * Undefining POLARSSL_HAVE_ASM now also handles prevents asm in
Hanno Becker01a0e072017-07-26 11:49:40 +01004114 padlock and timing code.
Paul Bakker99ed6782011-01-05 14:48:42 +00004115 * Fixed an off-by-one buffer allocation in ssl_set_hostname()
4116 responsible for crashes and unwanted behaviour.
4117 * Added support for Certificate Revocation List (CRL) parsing.
4118 * Added support for CRL revocation to x509parse_verify() and
4119 SSL/TLS code.
4120 * Fixed compatibility of XTEA and Camellia on a 64-bit system
4121 (found by Felix von Leitner).
4122
4123= Version 0.10.0 released on 2009-01-12
4124 * Migrated XySSL to PolarSSL
4125 * Added XTEA symmetric cipher
4126 * Added Camellia symmetric cipher
4127 * Added support for ciphersuites: SSL_RSA_CAMELLIA_128_SHA,
4128 SSL_RSA_CAMELLIA_256_SHA and SSL_EDH_RSA_CAMELLIA_256_SHA
4129 * Fixed dangerous bug that can cause a heap overflow in
4130 rsa_pkcs1_decrypt (found by Christophe Devine)
4131
4132================================================================
4133XySSL ChangeLog
4134
4135= Version 0.9 released on 2008-03-16
4136
4137 * Added support for ciphersuite: SSL_RSA_AES_128_SHA
4138 * Enabled support for large files by default in aescrypt2.c
4139 * Preliminary openssl wrapper contributed by David Barrett
4140 * Fixed a bug in ssl_write() that caused the same payload to
4141 be sent twice in non-blocking mode when send returns EAGAIN
4142 * Fixed ssl_parse_client_hello(): session id and challenge must
4143 not be swapped in the SSLv2 ClientHello (found by Greg Robson)
4144 * Added user-defined callback debug function (Krystian Kolodziej)
4145 * Before freeing a certificate, properly zero out all cert. data
4146 * Fixed the "mode" parameter so that encryption/decryption are
4147 not swapped on PadLock; also fixed compilation on older versions
4148 of gcc (bug reported by David Barrett)
4149 * Correctly handle the case in padlock_xcryptcbc() when input or
Antonin Décimo36e89b52019-01-23 15:24:37 +01004150 output data is non-aligned by falling back to the software
Paul Bakker99ed6782011-01-05 14:48:42 +00004151 implementation, as VIA Nehemiah cannot handle non-aligned buffers
4152 * Fixed a memory leak in x509parse_crt() which was reported by Greg
4153 Robson-Garth; some x509write.c fixes by Pascal Vizeli, thanks to
4154 Matthew Page who reported several bugs
4155 * Fixed x509_get_ext() to accept some rare certificates which have
4156 an INTEGER instead of a BOOLEAN for BasicConstraints::cA.
4157 * Added support on the client side for the TLS "hostname" extension
4158 (patch contributed by David Patino)
4159 * Make x509parse_verify() return BADCERT_CN_MISMATCH when an empty
4160 string is passed as the CN (bug reported by spoofy)
4161 * Added an option to enable/disable the BN assembly code
4162 * Updated rsa_check_privkey() to verify that (D*E) = 1 % (P-1)*(Q-1)
4163 * Disabled obsolete hash functions by default (MD2, MD4); updated
4164 selftest and benchmark to not test ciphers that have been disabled
4165 * Updated x509parse_cert_info() to correctly display byte 0 of the
4166 serial number, setup correct server port in the ssl client example
4167 * Fixed a critical denial-of-service with X.509 cert. verification:
4168 peer may cause xyssl to loop indefinitely by sending a certificate
4169 for which the RSA signature check fails (bug reported by Benoit)
4170 * Added test vectors for: AES-CBC, AES-CFB, DES-CBC and 3DES-CBC,
4171 HMAC-MD5, HMAC-SHA1, HMAC-SHA-256, HMAC-SHA-384, and HMAC-SHA-512
4172 * Fixed HMAC-SHA-384 and HMAC-SHA-512 (thanks to Josh Sinykin)
4173 * Modified ssl_parse_client_key_exchange() to protect against
4174 Daniel Bleichenbacher attack on PKCS#1 v1.5 padding, as well
4175 as the Klima-Pokorny-Rosa extension of Bleichenbacher's attack
4176 * Updated rsa_gen_key() so that ctx->N is always nbits in size
4177 * Fixed assembly PPC compilation errors on Mac OS X, thanks to
4178 David Barrett and Dusan Semen
4179
4180= Version 0.8 released on 2007-10-20
4181
4182 * Modified the HMAC functions to handle keys larger
4183 than 64 bytes, thanks to Stephane Desneux and gary ng
4184 * Fixed ssl_read_record() to properly update the handshake
4185 message digests, which fixes IE6/IE7 client authentication
4186 * Cleaned up the XYSSL* #defines, suggested by Azriel Fasten
4187 * Fixed net_recv(), thanks to Lorenz Schori and Egon Kocjan
4188 * Added user-defined callbacks for handling I/O and sessions
4189 * Added lots of debugging output in the SSL/TLS functions
4190 * Added preliminary X.509 cert. writing by Pascal Vizeli
4191 * Added preliminary support for the VIA PadLock routines
4192 * Added AES-CFB mode of operation, contributed by chmike
4193 * Added an SSL/TLS stress testing program (ssl_test.c)
4194 * Updated the RSA PKCS#1 code to allow choosing between
4195 RSA_PUBLIC and RSA_PRIVATE, as suggested by David Barrett
4196 * Updated ssl_read() to skip 0-length records from OpenSSL
4197 * Fixed the make install target to comply with *BSD make
4198 * Fixed a bug in mpi_read_binary() on 64-bit platforms
4199 * mpi_is_prime() speedups, thanks to Kevin McLaughlin
4200 * Fixed a long standing memory leak in mpi_is_prime()
4201 * Replaced realloc with malloc in mpi_grow(), and set
4202 the sign of zero as positive in mpi_init() (reported
4203 by Jonathan M. McCune)
4204
4205= Version 0.7 released on 2007-07-07
4206
4207 * Added support for the MicroBlaze soft-core processor
4208 * Fixed a bug in ssl_tls.c which sometimes prevented SSL
4209 connections from being established with non-blocking I/O
4210 * Fixed a couple bugs in the VS6 and UNIX Makefiles
4211 * Fixed the "PIC register ebx clobbered in asm" bug
4212 * Added HMAC starts/update/finish support functions
4213 * Added the SHA-224, SHA-384 and SHA-512 hash functions
4214 * Fixed the net_set_*block routines, thanks to Andreas
4215 * Added a few demonstration programs: md5sum, sha1sum,
4216 dh_client, dh_server, rsa_genkey, rsa_sign, rsa_verify
4217 * Added new bignum import and export helper functions
4218 * Rewrote README.txt in program/ssl/ca to better explain
4219 how to create a test PKI
4220
4221= Version 0.6 released on 2007-04-01
4222
4223 * Ciphers used in SSL/TLS can now be disabled at compile
4224 time, to reduce the memory footprint on embedded systems
4225 * Added multiply assembly code for the TriCore and modified
4226 havege_struct for this processor, thanks to David Patiño
4227 * Added multiply assembly code for 64-bit PowerPCs,
4228 thanks to Peking University and the OSU Open Source Lab
4229 * Added experimental support of Quantum Cryptography
4230 * Added support for autoconf, contributed by Arnaud Cornet
4231 * Fixed "long long" compilation issues on IA-64 and PPC64
4232 * Fixed a bug introduced in xyssl-0.5/timing.c: hardclock
4233 was not being correctly defined on ARM and MIPS
4234
4235= Version 0.5 released on 2007-03-01
4236
4237 * Added multiply assembly code for SPARC and Alpha
4238 * Added (beta) support for non-blocking I/O operations
4239 * Implemented session resuming and client authentication
4240 * Fixed some portability issues on WinCE, MINIX 3, Plan9
4241 (thanks to Benjamin Newman), HP-UX, FreeBSD and Solaris
4242 * Improved the performance of the EDH key exchange
4243 * Fixed a bug that caused valid packets with a payload
4244 size of 16384 bytes to be rejected
4245
4246= Version 0.4 released on 2007-02-01
4247
4248 * Added support for Ephemeral Diffie-Hellman key exchange
4249 * Added multiply asm code for SSE2, ARM, PPC, MIPS and M68K
4250 * Various improvement to the modular exponentiation code
4251 * Rewrote the headers to generate the API docs with doxygen
4252 * Fixed a bug in ssl_encrypt_buf (incorrect padding was
4253 generated) and in ssl_parse_client_hello (max. client
4254 version was not properly set), thanks to Didier Rebeix
4255 * Fixed another bug in ssl_parse_client_hello: clients with
4256 cipherlists larger than 96 bytes were incorrectly rejected
4257 * Fixed a couple memory leak in x509_read.c
4258
4259= Version 0.3 released on 2007-01-01
4260
4261 * Added server-side SSLv3 and TLSv1.0 support
4262 * Multiple fixes to enhance the compatibility with g++,
4263 thanks to Xosé Antón Otero Ferreira
4264 * Fixed a bug in the CBC code, thanks to dowst; also,
Paul Bakker60b1d102013-10-29 10:02:51 +01004265 the bignum code is no longer dependent on long long
Paul Bakker99ed6782011-01-05 14:48:42 +00004266 * Updated rsa_pkcs1_sign to handle arbitrary large inputs
4267 * Updated timing.c for improved compatibility with i386
4268 and 486 processors, thanks to Arnaud Cornet
4269
4270= Version 0.2 released on 2006-12-01
4271
4272 * Updated timing.c to support ARM and MIPS arch
4273 * Updated the MPI code to support 8086 on MSVC 1.5
4274 * Added the copyright notice at the top of havege.h
4275 * Fixed a bug in sha2_hmac, thanks to newsoft/Wenfang Zhang
4276 * Fixed a bug reported by Adrian Rüegsegger in x509_read_key
4277 * Fixed a bug reported by Torsten Lauter in ssl_read_record
4278 * Fixed a bug in rsa_check_privkey that would wrongly cause
4279 valid RSA keys to be dismissed (thanks to oldwolf)
4280 * Fixed a bug in mpi_is_prime that caused some primes to fail
4281 the Miller-Rabin primality test
4282
4283 I'd also like to thank Younès Hafri for the CRUX linux port,
4284 Khalil Petit who added XySSL into pkgsrc and Arnaud Cornet
4285 who maintains the Debian package :-)
4286
4287= Version 0.1 released on 2006-11-01