Declare ChaCha-Poly ciphersuites
Prefer them over AES-GCM as they have better performance and fewer side
channel considerations in software implementations.
diff --git a/library/ssl_ciphersuites.c b/library/ssl_ciphersuites.c
index 2e9a0fd..59cdc7a 100644
--- a/library/ssl_ciphersuites.c
+++ b/library/ssl_ciphersuites.c
@@ -47,7 +47,7 @@
* 1. By key exchange:
* Forward-secure non-PSK > forward-secure PSK > ECJPAKE > other non-PSK > other PSK
* 2. By key length and cipher:
- * AES-256 > Camellia-256 > ARIA-256 > AES-128 > Camellia-128 > ARIA-128 > 3DES
+ * ChaCha > AES-256 > Camellia-256 > ARIA-256 > AES-128 > Camellia-128 > ARIA-128 > 3DES
* 3. By cipher mode when relevant GCM > CCM > CBC > CCM_8
* 4. By hash function used when relevant
* 5. By key exchange/auth again: EC > non-EC
@@ -57,6 +57,11 @@
#if defined(MBEDTLS_SSL_CIPHERSUITES)
MBEDTLS_SSL_CIPHERSUITES,
#else
+ /* Chacha-Poly ephemeral suites */
+ MBEDTLS_TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256,
+ MBEDTLS_TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256,
+ MBEDTLS_TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256,
+
/* All AES-256 ephemeral suites */
MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,
MBEDTLS_TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
@@ -127,6 +132,8 @@
MBEDTLS_TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA,
/* The PSK ephemeral suites */
+ MBEDTLS_TLS_ECDHE_PSK_WITH_CHACHA20_POLY1305_SHA256,
+ MBEDTLS_TLS_DHE_PSK_WITH_CHACHA20_POLY1305_SHA256,
MBEDTLS_TLS_DHE_PSK_WITH_AES_256_GCM_SHA384,
MBEDTLS_TLS_DHE_PSK_WITH_AES_256_CCM,
MBEDTLS_TLS_ECDHE_PSK_WITH_AES_256_CBC_SHA384,
@@ -227,6 +234,7 @@
MBEDTLS_TLS_ECDH_ECDSA_WITH_3DES_EDE_CBC_SHA,
/* The RSA PSK suites */
+ MBEDTLS_TLS_RSA_PSK_WITH_CHACHA20_POLY1305_SHA256,
MBEDTLS_TLS_RSA_PSK_WITH_AES_256_GCM_SHA384,
MBEDTLS_TLS_RSA_PSK_WITH_AES_256_CBC_SHA384,
MBEDTLS_TLS_RSA_PSK_WITH_AES_256_CBC_SHA,
@@ -246,6 +254,7 @@
MBEDTLS_TLS_RSA_PSK_WITH_3DES_EDE_CBC_SHA,
/* The PSK suites */
+ MBEDTLS_TLS_PSK_WITH_CHACHA20_POLY1305_SHA256,
MBEDTLS_TLS_PSK_WITH_AES_256_GCM_SHA384,
MBEDTLS_TLS_PSK_WITH_AES_256_CCM,
MBEDTLS_TLS_PSK_WITH_AES_256_CBC_SHA384,
@@ -312,6 +321,75 @@
static const mbedtls_ssl_ciphersuite_t ciphersuite_definitions[] =
{
+#if defined(MBEDTLS_CHACHAPOLY_C) && \
+ defined(MBEDTLS_SHA256_C) && \
+ defined(MBEDTLS_SSL_PROTO_TLS1_2)
+#if defined(MBEDTLS_KEY_EXCHANGE_ECDHE_RSA_ENABLED)
+ { MBEDTLS_TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256,
+ "TLS-ECDHE-RSA-WITH-CHACHA20-POLY1305-SHA256",
+ MBEDTLS_CIPHER_CHACHA20_POLY1305, MBEDTLS_MD_SHA256,
+ MBEDTLS_KEY_EXCHANGE_ECDHE_RSA,
+ MBEDTLS_SSL_MAJOR_VERSION_3, MBEDTLS_SSL_MINOR_VERSION_3,
+ MBEDTLS_SSL_MAJOR_VERSION_3, MBEDTLS_SSL_MINOR_VERSION_3,
+ 0 },
+#endif
+#if defined(MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA_ENABLED)
+ { MBEDTLS_TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256,
+ "TLS-ECDHE-ECDSA-WITH-CHACHA20-POLY1305-SHA256",
+ MBEDTLS_CIPHER_CHACHA20_POLY1305, MBEDTLS_MD_SHA256,
+ MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA,
+ MBEDTLS_SSL_MAJOR_VERSION_3, MBEDTLS_SSL_MINOR_VERSION_3,
+ MBEDTLS_SSL_MAJOR_VERSION_3, MBEDTLS_SSL_MINOR_VERSION_3,
+ 0 },
+#endif
+#if defined(MBEDTLS_KEY_EXCHANGE_DHE_RSA_ENABLED)
+ { MBEDTLS_TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256,
+ "TLS-DHE-RSA-WITH-CHACHA20-POLY1305-SHA256",
+ MBEDTLS_CIPHER_CHACHA20_POLY1305, MBEDTLS_MD_SHA256,
+ MBEDTLS_KEY_EXCHANGE_DHE_RSA,
+ MBEDTLS_SSL_MAJOR_VERSION_3, MBEDTLS_SSL_MINOR_VERSION_3,
+ MBEDTLS_SSL_MAJOR_VERSION_3, MBEDTLS_SSL_MINOR_VERSION_3,
+ 0 },
+#endif
+#if defined(MBEDTLS_KEY_EXCHANGE_PSK_ENABLED)
+ { MBEDTLS_TLS_PSK_WITH_CHACHA20_POLY1305_SHA256,
+ "TLS-PSK-WITH-CHACHA20-POLY1305-SHA256",
+ MBEDTLS_CIPHER_CHACHA20_POLY1305, MBEDTLS_MD_SHA256,
+ MBEDTLS_KEY_EXCHANGE_PSK,
+ MBEDTLS_SSL_MAJOR_VERSION_3, MBEDTLS_SSL_MINOR_VERSION_3,
+ MBEDTLS_SSL_MAJOR_VERSION_3, MBEDTLS_SSL_MINOR_VERSION_3,
+ 0 },
+#endif
+#if defined(MBEDTLS_KEY_EXCHANGE_ECDHE_PSK_ENABLED)
+ { MBEDTLS_TLS_ECDHE_PSK_WITH_CHACHA20_POLY1305_SHA256,
+ "TLS-ECDHE-PSK-WITH-CHACHA20-POLY1305-SHA256",
+ MBEDTLS_CIPHER_CHACHA20_POLY1305, MBEDTLS_MD_SHA256,
+ MBEDTLS_KEY_EXCHANGE_ECDHE_PSK,
+ MBEDTLS_SSL_MAJOR_VERSION_3, MBEDTLS_SSL_MINOR_VERSION_3,
+ MBEDTLS_SSL_MAJOR_VERSION_3, MBEDTLS_SSL_MINOR_VERSION_3,
+ 0 },
+#endif
+#if defined(MBEDTLS_KEY_EXCHANGE_DHE_PSK_ENABLED)
+ { MBEDTLS_TLS_DHE_PSK_WITH_CHACHA20_POLY1305_SHA256,
+ "TLS-DHE-PSK-WITH-CHACHA20-POLY1305-SHA256",
+ MBEDTLS_CIPHER_CHACHA20_POLY1305, MBEDTLS_MD_SHA256,
+ MBEDTLS_KEY_EXCHANGE_DHE_PSK,
+ MBEDTLS_SSL_MAJOR_VERSION_3, MBEDTLS_SSL_MINOR_VERSION_3,
+ MBEDTLS_SSL_MAJOR_VERSION_3, MBEDTLS_SSL_MINOR_VERSION_3,
+ 0 },
+#endif
+#if defined(MBEDTLS_KEY_EXCHANGE_RSA_PSK_ENABLED)
+ { MBEDTLS_TLS_RSA_PSK_WITH_CHACHA20_POLY1305_SHA256,
+ "TLS-RSA-PSK-WITH-CHACHA20-POLY1305-SHA256",
+ MBEDTLS_CIPHER_CHACHA20_POLY1305, MBEDTLS_MD_SHA256,
+ MBEDTLS_KEY_EXCHANGE_RSA_PSK,
+ MBEDTLS_SSL_MAJOR_VERSION_3, MBEDTLS_SSL_MINOR_VERSION_3,
+ MBEDTLS_SSL_MAJOR_VERSION_3, MBEDTLS_SSL_MINOR_VERSION_3,
+ 0 },
+#endif
+#endif /* MBEDTLS_CHACHAPOLY_C &&
+ MBEDTLS_SHA256_C &&
+ MBEDTLS_SSL_PROTO_TLS1_2 */
#if defined(MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA_ENABLED)
#if defined(MBEDTLS_AES_C)
#if defined(MBEDTLS_SHA1_C)