diff --git a/configs/config-no-entropy.h b/configs/config-no-entropy.h
index d40b48c..6f44899 100644
--- a/configs/config-no-entropy.h
+++ b/configs/config-no-entropy.h
@@ -51,8 +51,6 @@
 #define MBEDTLS_PKCS1_V21
 #define MBEDTLS_SELF_TEST
 #define MBEDTLS_VERSION_FEATURES
-#define MBEDTLS_X509_CHECK_KEY_USAGE
-#define MBEDTLS_X509_CHECK_EXTENDED_KEY_USAGE
 
 /* mbed TLS modules */
 #define MBEDTLS_AES_C
@@ -78,9 +76,6 @@
 #define MBEDTLS_SHA256_C
 #define MBEDTLS_SHA512_C
 #define MBEDTLS_VERSION_C
-#define MBEDTLS_X509_USE_C
-#define MBEDTLS_X509_CRT_PARSE_C
-#define MBEDTLS_X509_CRL_PARSE_C
 //#define MBEDTLS_CMAC_C
 
 /* Miscellaneous options */
diff --git a/configs/config-psa-crypto.h b/configs/config-psa-crypto.h
index 2e85819..682fa87 100644
--- a/configs/config-psa-crypto.h
+++ b/configs/config-psa-crypto.h
@@ -1024,64 +1024,6 @@
  */
 #define MBEDTLS_VERSION_FEATURES
 
-/**
- * \def MBEDTLS_X509_ALLOW_EXTENSIONS_NON_V3
- *
- * If set, the X509 parser will not break-off when parsing an X509 certificate
- * and encountering an extension in a v1 or v2 certificate.
- *
- * Uncomment to prevent an error.
- */
-//#define MBEDTLS_X509_ALLOW_EXTENSIONS_NON_V3
-
-/**
- * \def MBEDTLS_X509_ALLOW_UNSUPPORTED_CRITICAL_EXTENSION
- *
- * If set, the X509 parser will not break-off when parsing an X509 certificate
- * and encountering an unknown critical extension.
- *
- * \warning Depending on your PKI use, enabling this can be a security risk!
- *
- * Uncomment to prevent an error.
- */
-//#define MBEDTLS_X509_ALLOW_UNSUPPORTED_CRITICAL_EXTENSION
-
-/**
- * \def MBEDTLS_X509_CHECK_KEY_USAGE
- *
- * Enable verification of the keyUsage extension (CA and leaf certificates).
- *
- * Disabling this avoids problems with mis-issued and/or misused
- * (intermediate) CA and leaf certificates.
- *
- * \warning Depending on your PKI use, disabling this can be a security risk!
- *
- * Comment to skip keyUsage checking for both CA and leaf certificates.
- */
-#define MBEDTLS_X509_CHECK_KEY_USAGE
-
-/**
- * \def MBEDTLS_X509_CHECK_EXTENDED_KEY_USAGE
- *
- * Enable verification of the extendedKeyUsage extension (leaf certificates).
- *
- * Disabling this avoids problems with mis-issued and/or misused certificates.
- *
- * \warning Depending on your PKI use, disabling this can be a security risk!
- *
- * Comment to skip extendedKeyUsage checking for certificates.
- */
-#define MBEDTLS_X509_CHECK_EXTENDED_KEY_USAGE
-
-/**
- * \def MBEDTLS_X509_RSASSA_PSS_SUPPORT
- *
- * Enable parsing and verification of X.509 certificates, CRLs and CSRS
- * signed with RSASSA-PSS (aka PKCS#1 v2.1).
- *
- * Comment this macro to disallow using RSASSA-PSS in certificates.
- */
-#define MBEDTLS_X509_RSASSA_PSS_SUPPORT
 /* \} name SECTION: mbed TLS feature support */
 
 /**
@@ -1212,8 +1154,7 @@
  * Enable the generic ASN1 parser.
  *
  * Module:  library/asn1.c
- * Caller:  library/x509.c
- *          library/dhm.c
+ * Caller:  library/dhm.c
  *          library/pkcs12.c
  *          library/pkcs5.c
  *          library/pkparse.c
@@ -1228,9 +1169,6 @@
  * Module:  library/asn1write.c
  * Caller:  library/ecdsa.c
  *          library/pkwrite.c
- *          library/x509_create.c
- *          library/x509write_crt.c
- *          library/x509write_csr.c
  */
 #define MBEDTLS_ASN1_WRITE_C
 
@@ -1389,18 +1327,6 @@
 #define MBEDTLS_CCM_C
 
 /**
- * \def MBEDTLS_CERTS_C
- *
- * Enable the test certificates.
- *
- * Module:  library/certs.c
- * Caller:
- *
- * This module is used for testing (ssl_client/server).
- */
-#define MBEDTLS_CERTS_C
-
-/**
  * \def MBEDTLS_CHACHA20_C
  *
  * Enable the ChaCha20 stream cipher.
@@ -1768,13 +1694,6 @@
  *          library/pkparse.c
  *          library/pkwrite.c
  *          library/rsa.c
- *          library/x509.c
- *          library/x509_create.c
- *          library/x509_crl.c
- *          library/x509_crt.c
- *          library/x509_csr.c
- *          library/x509write_crt.c
- *          library/x509write_csr.c
  *
  * This modules translates between OIDs and internal values.
  */
@@ -1802,9 +1721,6 @@
  * Module:  library/pem.c
  * Caller:  library/dhm.c
  *          library/pkparse.c
- *          library/x509_crl.c
- *          library/x509_crt.c
- *          library/x509_csr.c
  *
  * Requires: MBEDTLS_BASE64_C
  *
@@ -1819,8 +1735,6 @@
  *
  * Module:  library/pem.c
  * Caller:  library/pkwrite.c
- *          library/x509write_crt.c
- *          library/x509write_csr.c
  *
  * Requires: MBEDTLS_BASE64_C
  *
@@ -1847,8 +1761,6 @@
  * Enable the generic public (asymetric) key parser.
  *
  * Module:  library/pkparse.c
- * Caller:  library/x509_crt.c
- *          library/x509_csr.c
  *
  * Requires: MBEDTLS_PK_C
  *
@@ -1862,7 +1774,6 @@
  * Enable the generic public (asymetric) key writer.
  *
  * Module:  library/pkwrite.c
- * Caller:  library/x509write.c
  *
  * Requires: MBEDTLS_PK_C
  *
@@ -1884,21 +1795,6 @@
 #define MBEDTLS_PKCS5_C
 
 /**
- * \def MBEDTLS_PKCS11_C
- *
- * Enable wrapper for PKCS#11 smartcard support.
- *
- * Module:  library/pkcs11.c
- * Caller:  library/pk.c
- *
- * Requires: MBEDTLS_PK_C
- *
- * This module enables SSL/TLS PKCS #11 smartcard support.
- * Requires the presence of the PKCS#11 helper library (libpkcs11-helper)
- */
-//#define MBEDTLS_PKCS11_C
-
-/**
  * \def MBEDTLS_PKCS12_C
  *
  * Enable PKCS#12 PBE functions.
@@ -1999,7 +1895,6 @@
  *
  * Module:  library/rsa.c
  *          library/rsa_internal.c
- * Caller:  library/x509.c
  *
  * This module is used by the following key exchanges:
  *      RSA, DHE-RSA, ECDHE-RSA, RSA-PSK
@@ -2015,7 +1910,6 @@
  *
  * Module:  library/sha1.c
  * Caller:  library/md.c
- *          library/x509write_crt.c
  *
  * This module is required for SSL/TLS up to version 1.1, for TLS 1.2
  * depending on the handshake parameters, and for SHA1-signed certificates.
@@ -2111,106 +2005,6 @@
 #define MBEDTLS_VERSION_C
 
 /**
- * \def MBEDTLS_X509_USE_C
- *
- * Enable X.509 core for using certificates.
- *
- * Module:  library/x509.c
- * Caller:  library/x509_crl.c
- *          library/x509_crt.c
- *          library/x509_csr.c
- *
- * Requires: MBEDTLS_ASN1_PARSE_C, MBEDTLS_BIGNUM_C, MBEDTLS_OID_C,
- *           MBEDTLS_PK_PARSE_C
- *
- * This module is required for the X.509 parsing modules.
- */
-#define MBEDTLS_X509_USE_C
-
-/**
- * \def MBEDTLS_X509_CRT_PARSE_C
- *
- * Enable X.509 certificate parsing.
- *
- * Module:  library/x509_crt.c
- * Caller:  library/ssl_cli.c
- *          library/ssl_srv.c
- *          library/ssl_tls.c
- *
- * Requires: MBEDTLS_X509_USE_C
- *
- * This module is required for X.509 certificate parsing.
- */
-#define MBEDTLS_X509_CRT_PARSE_C
-
-/**
- * \def MBEDTLS_X509_CRL_PARSE_C
- *
- * Enable X.509 CRL parsing.
- *
- * Module:  library/x509_crl.c
- * Caller:  library/x509_crt.c
- *
- * Requires: MBEDTLS_X509_USE_C
- *
- * This module is required for X.509 CRL parsing.
- */
-#define MBEDTLS_X509_CRL_PARSE_C
-
-/**
- * \def MBEDTLS_X509_CSR_PARSE_C
- *
- * Enable X.509 Certificate Signing Request (CSR) parsing.
- *
- * Module:  library/x509_csr.c
- * Caller:  library/x509_crt_write.c
- *
- * Requires: MBEDTLS_X509_USE_C
- *
- * This module is used for reading X.509 certificate request.
- */
-#define MBEDTLS_X509_CSR_PARSE_C
-
-/**
- * \def MBEDTLS_X509_CREATE_C
- *
- * Enable X.509 core for creating certificates.
- *
- * Module:  library/x509_create.c
- *
- * Requires: MBEDTLS_BIGNUM_C, MBEDTLS_OID_C, MBEDTLS_PK_WRITE_C
- *
- * This module is the basis for creating X.509 certificates and CSRs.
- */
-#define MBEDTLS_X509_CREATE_C
-
-/**
- * \def MBEDTLS_X509_CRT_WRITE_C
- *
- * Enable creating X.509 certificates.
- *
- * Module:  library/x509_crt_write.c
- *
- * Requires: MBEDTLS_X509_CREATE_C
- *
- * This module is required for X.509 certificate creation.
- */
-#define MBEDTLS_X509_CRT_WRITE_C
-
-/**
- * \def MBEDTLS_X509_CSR_WRITE_C
- *
- * Enable creating X.509 Certificate Signing Requests (CSR).
- *
- * Module:  library/x509_csr_write.c
- *
- * Requires: MBEDTLS_X509_CREATE_C
- *
- * This module is required for X.509 certificate request writing.
- */
-#define MBEDTLS_X509_CSR_WRITE_C
-
-/**
  * \def MBEDTLS_XTEA_C
  *
  * Enable the XTEA block cipher.
diff --git a/configs/config-suite-b.h b/configs/config-suite-b.h
index dd9a2a0..4faaa77 100644
--- a/configs/config-suite-b.h
+++ b/configs/config-suite-b.h
@@ -66,12 +66,9 @@
 #define MBEDTLS_PK_PARSE_C
 #define MBEDTLS_SHA256_C
 #define MBEDTLS_SHA512_C
-#define MBEDTLS_X509_CRT_PARSE_C
-#define MBEDTLS_X509_USE_C
 
 /* For test certificates */
 #define MBEDTLS_BASE64_C
-#define MBEDTLS_CERTS_C
 #define MBEDTLS_PEM_PARSE_C
 
 /* Save RAM at the expense of ROM */
diff --git a/include/mbedtls/check_config.h b/include/mbedtls/check_config.h
index 933e460..8f6ff5f 100644
--- a/include/mbedtls/check_config.h
+++ b/include/mbedtls/check_config.h
@@ -255,10 +255,6 @@
 #error "MBEDTLS_PK_WRITE_C defined, but not all prerequisites"
 #endif
 
-#if defined(MBEDTLS_PKCS11_C) && !defined(MBEDTLS_PK_C)
-#error "MBEDTLS_PKCS11_C defined, but not all prerequisites"
-#endif
-
 #if defined(MBEDTLS_PLATFORM_EXIT_ALT) && !defined(MBEDTLS_PLATFORM_C)
 #error "MBEDTLS_PLATFORM_EXIT_ALT defined, but not all prerequisites"
 #endif
@@ -493,11 +489,6 @@
 #error "MBEDTLS_RSA_C defined, but none of the PKCS1 versions enabled"
 #endif
 
-#if defined(MBEDTLS_X509_RSASSA_PSS_SUPPORT) &&                        \
-    ( !defined(MBEDTLS_RSA_C) || !defined(MBEDTLS_PKCS1_V21) )
-#error "MBEDTLS_X509_RSASSA_PSS_SUPPORT defined, but not all prerequisites"
-#endif
-
 #if defined(MBEDTLS_THREADING_PTHREAD)
 #if !defined(MBEDTLS_THREADING_C) || defined(MBEDTLS_THREADING_IMPL)
 #error "MBEDTLS_THREADING_PTHREAD defined, but not all prerequisites"
@@ -525,38 +516,6 @@
 #error "MBEDTLS_VERSION_FEATURES defined, but not all prerequisites"
 #endif
 
-#if defined(MBEDTLS_X509_USE_C) && ( !defined(MBEDTLS_BIGNUM_C) ||  \
-    !defined(MBEDTLS_OID_C) || !defined(MBEDTLS_ASN1_PARSE_C) ||      \
-    !defined(MBEDTLS_PK_PARSE_C) )
-#error "MBEDTLS_X509_USE_C defined, but not all prerequisites"
-#endif
-
-#if defined(MBEDTLS_X509_CREATE_C) && ( !defined(MBEDTLS_BIGNUM_C) ||  \
-    !defined(MBEDTLS_OID_C) || !defined(MBEDTLS_ASN1_WRITE_C) ||       \
-    !defined(MBEDTLS_PK_WRITE_C) )
-#error "MBEDTLS_X509_CREATE_C defined, but not all prerequisites"
-#endif
-
-#if defined(MBEDTLS_X509_CRT_PARSE_C) && ( !defined(MBEDTLS_X509_USE_C) )
-#error "MBEDTLS_X509_CRT_PARSE_C defined, but not all prerequisites"
-#endif
-
-#if defined(MBEDTLS_X509_CRL_PARSE_C) && ( !defined(MBEDTLS_X509_USE_C) )
-#error "MBEDTLS_X509_CRL_PARSE_C defined, but not all prerequisites"
-#endif
-
-#if defined(MBEDTLS_X509_CSR_PARSE_C) && ( !defined(MBEDTLS_X509_USE_C) )
-#error "MBEDTLS_X509_CSR_PARSE_C defined, but not all prerequisites"
-#endif
-
-#if defined(MBEDTLS_X509_CRT_WRITE_C) && ( !defined(MBEDTLS_X509_CREATE_C) )
-#error "MBEDTLS_X509_CRT_WRITE_C defined, but not all prerequisites"
-#endif
-
-#if defined(MBEDTLS_X509_CSR_WRITE_C) && ( !defined(MBEDTLS_X509_CREATE_C) )
-#error "MBEDTLS_X509_CSR_WRITE_C defined, but not all prerequisites"
-#endif
-
 #if defined(MBEDTLS_HAVE_INT32) && defined(MBEDTLS_HAVE_INT64)
 #error "MBEDTLS_HAVE_INT32 and MBEDTLS_HAVE_INT64 cannot be defined simultaneously"
 #endif /* MBEDTLS_HAVE_INT32 && MBEDTLS_HAVE_INT64 */
diff --git a/include/mbedtls/config.h b/include/mbedtls/config.h
index be0f192..4c86e90 100644
--- a/include/mbedtls/config.h
+++ b/include/mbedtls/config.h
@@ -1053,83 +1053,6 @@
  */
 #define MBEDTLS_VERSION_FEATURES
 
-/**
- * \def MBEDTLS_X509_ALLOW_EXTENSIONS_NON_V3
- *
- * If set, the X509 parser will not break-off when parsing an X509 certificate
- * and encountering an extension in a v1 or v2 certificate.
- *
- * Uncomment to prevent an error.
- */
-//#define MBEDTLS_X509_ALLOW_EXTENSIONS_NON_V3
-
-/**
- * \def MBEDTLS_X509_ALLOW_UNSUPPORTED_CRITICAL_EXTENSION
- *
- * If set, the X509 parser will not break-off when parsing an X509 certificate
- * and encountering an unknown critical extension.
- *
- * \warning Depending on your PKI use, enabling this can be a security risk!
- *
- * Uncomment to prevent an error.
- */
-//#define MBEDTLS_X509_ALLOW_UNSUPPORTED_CRITICAL_EXTENSION
-
-/**
- * \def MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK
- *
- * If set, this enables the X.509 API `mbedtls_x509_crt_verify_with_ca_cb()`
- * and the SSL API `mbedtls_ssl_conf_ca_cb()` which allow users to configure
- * the set of trusted certificates through a callback instead of a linked
- * list.
- *
- * This is useful for example in environments where a large number of trusted
- * certificates is present and storing them in a linked list isn't efficient
- * enough, or when the set of trusted certificates changes frequently.
- *
- * See the documentation of `mbedtls_x509_crt_verify_with_ca_cb()` and
- * `mbedtls_ssl_conf_ca_cb()` for more information.
- *
- * Uncomment to enable trusted certificate callbacks.
- */
-//#define MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK
-
-/**
- * \def MBEDTLS_X509_CHECK_KEY_USAGE
- *
- * Enable verification of the keyUsage extension (CA and leaf certificates).
- *
- * Disabling this avoids problems with mis-issued and/or misused
- * (intermediate) CA and leaf certificates.
- *
- * \warning Depending on your PKI use, disabling this can be a security risk!
- *
- * Comment to skip keyUsage checking for both CA and leaf certificates.
- */
-#define MBEDTLS_X509_CHECK_KEY_USAGE
-
-/**
- * \def MBEDTLS_X509_CHECK_EXTENDED_KEY_USAGE
- *
- * Enable verification of the extendedKeyUsage extension (leaf certificates).
- *
- * Disabling this avoids problems with mis-issued and/or misused certificates.
- *
- * \warning Depending on your PKI use, disabling this can be a security risk!
- *
- * Comment to skip extendedKeyUsage checking for certificates.
- */
-#define MBEDTLS_X509_CHECK_EXTENDED_KEY_USAGE
-
-/**
- * \def MBEDTLS_X509_RSASSA_PSS_SUPPORT
- *
- * Enable parsing and verification of X.509 certificates, CRLs and CSRS
- * signed with RSASSA-PSS (aka PKCS#1 v2.1).
- *
- * Comment this macro to disallow using RSASSA-PSS in certificates.
- */
-#define MBEDTLS_X509_RSASSA_PSS_SUPPORT
 /* \} name SECTION: mbed TLS feature support */
 
 /**
@@ -1260,8 +1183,7 @@
  * Enable the generic ASN1 parser.
  *
  * Module:  library/asn1.c
- * Caller:  library/x509.c
- *          library/dhm.c
+ * Caller:  library/dhm.c
  *          library/pkcs12.c
  *          library/pkcs5.c
  *          library/pkparse.c
@@ -1276,9 +1198,6 @@
  * Module:  library/asn1write.c
  * Caller:  library/ecdsa.c
  *          library/pkwrite.c
- *          library/x509_create.c
- *          library/x509write_crt.c
- *          library/x509write_csr.c
  */
 #define MBEDTLS_ASN1_WRITE_C
 
@@ -1437,18 +1356,6 @@
 #define MBEDTLS_CCM_C
 
 /**
- * \def MBEDTLS_CERTS_C
- *
- * Enable the test certificates.
- *
- * Module:  library/certs.c
- * Caller:
- *
- * This module is used for testing (ssl_client/server).
- */
-#define MBEDTLS_CERTS_C
-
-/**
  * \def MBEDTLS_CHACHA20_C
  *
  * Enable the ChaCha20 stream cipher.
@@ -1816,13 +1723,6 @@
  *          library/pkparse.c
  *          library/pkwrite.c
  *          library/rsa.c
- *          library/x509.c
- *          library/x509_create.c
- *          library/x509_crl.c
- *          library/x509_crt.c
- *          library/x509_csr.c
- *          library/x509write_crt.c
- *          library/x509write_csr.c
  *
  * This modules translates between OIDs and internal values.
  */
@@ -1850,9 +1750,6 @@
  * Module:  library/pem.c
  * Caller:  library/dhm.c
  *          library/pkparse.c
- *          library/x509_crl.c
- *          library/x509_crt.c
- *          library/x509_csr.c
  *
  * Requires: MBEDTLS_BASE64_C
  *
@@ -1867,8 +1764,6 @@
  *
  * Module:  library/pem.c
  * Caller:  library/pkwrite.c
- *          library/x509write_crt.c
- *          library/x509write_csr.c
  *
  * Requires: MBEDTLS_BASE64_C
  *
@@ -1895,8 +1790,6 @@
  * Enable the generic public (asymetric) key parser.
  *
  * Module:  library/pkparse.c
- * Caller:  library/x509_crt.c
- *          library/x509_csr.c
  *
  * Requires: MBEDTLS_PK_C
  *
@@ -1910,7 +1803,6 @@
  * Enable the generic public (asymetric) key writer.
  *
  * Module:  library/pkwrite.c
- * Caller:  library/x509write.c
  *
  * Requires: MBEDTLS_PK_C
  *
@@ -1932,21 +1824,6 @@
 #define MBEDTLS_PKCS5_C
 
 /**
- * \def MBEDTLS_PKCS11_C
- *
- * Enable wrapper for PKCS#11 smartcard support.
- *
- * Module:  library/pkcs11.c
- * Caller:  library/pk.c
- *
- * Requires: MBEDTLS_PK_C
- *
- * This module enables SSL/TLS PKCS #11 smartcard support.
- * Requires the presence of the PKCS#11 helper library (libpkcs11-helper)
- */
-//#define MBEDTLS_PKCS11_C
-
-/**
  * \def MBEDTLS_PKCS12_C
  *
  * Enable PKCS#12 PBE functions.
@@ -2047,7 +1924,6 @@
  *
  * Module:  library/rsa.c
  *          library/rsa_internal.c
- * Caller:  library/x509.c
  *
  * This module is used by the following key exchanges:
  *      RSA, DHE-RSA, ECDHE-RSA, RSA-PSK
@@ -2063,7 +1939,6 @@
  *
  * Module:  library/sha1.c
  * Caller:  library/md.c
- *          library/x509write_crt.c
  *
  * This module is required for SSL/TLS up to version 1.1, for TLS 1.2
  * depending on the handshake parameters, and for SHA1-signed certificates.
@@ -2159,106 +2034,6 @@
 #define MBEDTLS_VERSION_C
 
 /**
- * \def MBEDTLS_X509_USE_C
- *
- * Enable X.509 core for using certificates.
- *
- * Module:  library/x509.c
- * Caller:  library/x509_crl.c
- *          library/x509_crt.c
- *          library/x509_csr.c
- *
- * Requires: MBEDTLS_ASN1_PARSE_C, MBEDTLS_BIGNUM_C, MBEDTLS_OID_C,
- *           MBEDTLS_PK_PARSE_C
- *
- * This module is required for the X.509 parsing modules.
- */
-#define MBEDTLS_X509_USE_C
-
-/**
- * \def MBEDTLS_X509_CRT_PARSE_C
- *
- * Enable X.509 certificate parsing.
- *
- * Module:  library/x509_crt.c
- * Caller:  library/ssl_cli.c
- *          library/ssl_srv.c
- *          library/ssl_tls.c
- *
- * Requires: MBEDTLS_X509_USE_C
- *
- * This module is required for X.509 certificate parsing.
- */
-#define MBEDTLS_X509_CRT_PARSE_C
-
-/**
- * \def MBEDTLS_X509_CRL_PARSE_C
- *
- * Enable X.509 CRL parsing.
- *
- * Module:  library/x509_crl.c
- * Caller:  library/x509_crt.c
- *
- * Requires: MBEDTLS_X509_USE_C
- *
- * This module is required for X.509 CRL parsing.
- */
-#define MBEDTLS_X509_CRL_PARSE_C
-
-/**
- * \def MBEDTLS_X509_CSR_PARSE_C
- *
- * Enable X.509 Certificate Signing Request (CSR) parsing.
- *
- * Module:  library/x509_csr.c
- * Caller:  library/x509_crt_write.c
- *
- * Requires: MBEDTLS_X509_USE_C
- *
- * This module is used for reading X.509 certificate request.
- */
-#define MBEDTLS_X509_CSR_PARSE_C
-
-/**
- * \def MBEDTLS_X509_CREATE_C
- *
- * Enable X.509 core for creating certificates.
- *
- * Module:  library/x509_create.c
- *
- * Requires: MBEDTLS_BIGNUM_C, MBEDTLS_OID_C, MBEDTLS_PK_WRITE_C
- *
- * This module is the basis for creating X.509 certificates and CSRs.
- */
-#define MBEDTLS_X509_CREATE_C
-
-/**
- * \def MBEDTLS_X509_CRT_WRITE_C
- *
- * Enable creating X.509 certificates.
- *
- * Module:  library/x509_crt_write.c
- *
- * Requires: MBEDTLS_X509_CREATE_C
- *
- * This module is required for X.509 certificate creation.
- */
-#define MBEDTLS_X509_CRT_WRITE_C
-
-/**
- * \def MBEDTLS_X509_CSR_WRITE_C
- *
- * Enable creating X.509 Certificate Signing Requests (CSR).
- *
- * Module:  library/x509_csr_write.c
- *
- * Requires: MBEDTLS_X509_CREATE_C
- *
- * This module is required for X.509 certificate request writing.
- */
-#define MBEDTLS_X509_CSR_WRITE_C
-
-/**
  * \def MBEDTLS_XTEA_C
  *
  * Enable the XTEA block cipher.
diff --git a/library/version_features.c b/library/version_features.c
index b355b2b..4f1da6a 100644
--- a/library/version_features.c
+++ b/library/version_features.c
@@ -417,24 +417,6 @@
 #if defined(MBEDTLS_VERSION_FEATURES)
     "MBEDTLS_VERSION_FEATURES",
 #endif /* MBEDTLS_VERSION_FEATURES */
-#if defined(MBEDTLS_X509_ALLOW_EXTENSIONS_NON_V3)
-    "MBEDTLS_X509_ALLOW_EXTENSIONS_NON_V3",
-#endif /* MBEDTLS_X509_ALLOW_EXTENSIONS_NON_V3 */
-#if defined(MBEDTLS_X509_ALLOW_UNSUPPORTED_CRITICAL_EXTENSION)
-    "MBEDTLS_X509_ALLOW_UNSUPPORTED_CRITICAL_EXTENSION",
-#endif /* MBEDTLS_X509_ALLOW_UNSUPPORTED_CRITICAL_EXTENSION */
-#if defined(MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK)
-    "MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK",
-#endif /* MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK */
-#if defined(MBEDTLS_X509_CHECK_KEY_USAGE)
-    "MBEDTLS_X509_CHECK_KEY_USAGE",
-#endif /* MBEDTLS_X509_CHECK_KEY_USAGE */
-#if defined(MBEDTLS_X509_CHECK_EXTENDED_KEY_USAGE)
-    "MBEDTLS_X509_CHECK_EXTENDED_KEY_USAGE",
-#endif /* MBEDTLS_X509_CHECK_EXTENDED_KEY_USAGE */
-#if defined(MBEDTLS_X509_RSASSA_PSS_SUPPORT)
-    "MBEDTLS_X509_RSASSA_PSS_SUPPORT",
-#endif /* MBEDTLS_X509_RSASSA_PSS_SUPPORT */
 #if defined(MBEDTLS_AESNI_C)
     "MBEDTLS_AESNI_C",
 #endif /* MBEDTLS_AESNI_C */
@@ -468,9 +450,6 @@
 #if defined(MBEDTLS_CCM_C)
     "MBEDTLS_CCM_C",
 #endif /* MBEDTLS_CCM_C */
-#if defined(MBEDTLS_CERTS_C)
-    "MBEDTLS_CERTS_C",
-#endif /* MBEDTLS_CERTS_C */
 #if defined(MBEDTLS_CHACHA20_C)
     "MBEDTLS_CHACHA20_C",
 #endif /* MBEDTLS_CHACHA20_C */
@@ -564,9 +543,6 @@
 #if defined(MBEDTLS_PKCS5_C)
     "MBEDTLS_PKCS5_C",
 #endif /* MBEDTLS_PKCS5_C */
-#if defined(MBEDTLS_PKCS11_C)
-    "MBEDTLS_PKCS11_C",
-#endif /* MBEDTLS_PKCS11_C */
 #if defined(MBEDTLS_PKCS12_C)
     "MBEDTLS_PKCS12_C",
 #endif /* MBEDTLS_PKCS12_C */
@@ -609,27 +585,6 @@
 #if defined(MBEDTLS_VERSION_C)
     "MBEDTLS_VERSION_C",
 #endif /* MBEDTLS_VERSION_C */
-#if defined(MBEDTLS_X509_USE_C)
-    "MBEDTLS_X509_USE_C",
-#endif /* MBEDTLS_X509_USE_C */
-#if defined(MBEDTLS_X509_CRT_PARSE_C)
-    "MBEDTLS_X509_CRT_PARSE_C",
-#endif /* MBEDTLS_X509_CRT_PARSE_C */
-#if defined(MBEDTLS_X509_CRL_PARSE_C)
-    "MBEDTLS_X509_CRL_PARSE_C",
-#endif /* MBEDTLS_X509_CRL_PARSE_C */
-#if defined(MBEDTLS_X509_CSR_PARSE_C)
-    "MBEDTLS_X509_CSR_PARSE_C",
-#endif /* MBEDTLS_X509_CSR_PARSE_C */
-#if defined(MBEDTLS_X509_CREATE_C)
-    "MBEDTLS_X509_CREATE_C",
-#endif /* MBEDTLS_X509_CREATE_C */
-#if defined(MBEDTLS_X509_CRT_WRITE_C)
-    "MBEDTLS_X509_CRT_WRITE_C",
-#endif /* MBEDTLS_X509_CRT_WRITE_C */
-#if defined(MBEDTLS_X509_CSR_WRITE_C)
-    "MBEDTLS_X509_CSR_WRITE_C",
-#endif /* MBEDTLS_X509_CSR_WRITE_C */
 #if defined(MBEDTLS_XTEA_C)
     "MBEDTLS_XTEA_C",
 #endif /* MBEDTLS_XTEA_C */
diff --git a/programs/test/query_config.c b/programs/test/query_config.c
index bffe9f8..94c8ec16 100644
--- a/programs/test/query_config.c
+++ b/programs/test/query_config.c
@@ -1154,54 +1154,6 @@
     }
 #endif /* MBEDTLS_VERSION_FEATURES */
 
-#if defined(MBEDTLS_X509_ALLOW_EXTENSIONS_NON_V3)
-    if( strcmp( "MBEDTLS_X509_ALLOW_EXTENSIONS_NON_V3", config ) == 0 )
-    {
-        MACRO_EXPANSION_TO_STR( MBEDTLS_X509_ALLOW_EXTENSIONS_NON_V3 );
-        return( 0 );
-    }
-#endif /* MBEDTLS_X509_ALLOW_EXTENSIONS_NON_V3 */
-
-#if defined(MBEDTLS_X509_ALLOW_UNSUPPORTED_CRITICAL_EXTENSION)
-    if( strcmp( "MBEDTLS_X509_ALLOW_UNSUPPORTED_CRITICAL_EXTENSION", config ) == 0 )
-    {
-        MACRO_EXPANSION_TO_STR( MBEDTLS_X509_ALLOW_UNSUPPORTED_CRITICAL_EXTENSION );
-        return( 0 );
-    }
-#endif /* MBEDTLS_X509_ALLOW_UNSUPPORTED_CRITICAL_EXTENSION */
-
-#if defined(MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK)
-    if( strcmp( "MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK", config ) == 0 )
-    {
-        MACRO_EXPANSION_TO_STR( MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK );
-        return( 0 );
-    }
-#endif /* MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK */
-
-#if defined(MBEDTLS_X509_CHECK_KEY_USAGE)
-    if( strcmp( "MBEDTLS_X509_CHECK_KEY_USAGE", config ) == 0 )
-    {
-        MACRO_EXPANSION_TO_STR( MBEDTLS_X509_CHECK_KEY_USAGE );
-        return( 0 );
-    }
-#endif /* MBEDTLS_X509_CHECK_KEY_USAGE */
-
-#if defined(MBEDTLS_X509_CHECK_EXTENDED_KEY_USAGE)
-    if( strcmp( "MBEDTLS_X509_CHECK_EXTENDED_KEY_USAGE", config ) == 0 )
-    {
-        MACRO_EXPANSION_TO_STR( MBEDTLS_X509_CHECK_EXTENDED_KEY_USAGE );
-        return( 0 );
-    }
-#endif /* MBEDTLS_X509_CHECK_EXTENDED_KEY_USAGE */
-
-#if defined(MBEDTLS_X509_RSASSA_PSS_SUPPORT)
-    if( strcmp( "MBEDTLS_X509_RSASSA_PSS_SUPPORT", config ) == 0 )
-    {
-        MACRO_EXPANSION_TO_STR( MBEDTLS_X509_RSASSA_PSS_SUPPORT );
-        return( 0 );
-    }
-#endif /* MBEDTLS_X509_RSASSA_PSS_SUPPORT */
-
 #if defined(MBEDTLS_AESNI_C)
     if( strcmp( "MBEDTLS_AESNI_C", config ) == 0 )
     {
@@ -1290,14 +1242,6 @@
     }
 #endif /* MBEDTLS_CCM_C */
 
-#if defined(MBEDTLS_CERTS_C)
-    if( strcmp( "MBEDTLS_CERTS_C", config ) == 0 )
-    {
-        MACRO_EXPANSION_TO_STR( MBEDTLS_CERTS_C );
-        return( 0 );
-    }
-#endif /* MBEDTLS_CERTS_C */
-
 #if defined(MBEDTLS_CHACHA20_C)
     if( strcmp( "MBEDTLS_CHACHA20_C", config ) == 0 )
     {
@@ -1546,14 +1490,6 @@
     }
 #endif /* MBEDTLS_PKCS5_C */
 
-#if defined(MBEDTLS_PKCS11_C)
-    if( strcmp( "MBEDTLS_PKCS11_C", config ) == 0 )
-    {
-        MACRO_EXPANSION_TO_STR( MBEDTLS_PKCS11_C );
-        return( 0 );
-    }
-#endif /* MBEDTLS_PKCS11_C */
-
 #if defined(MBEDTLS_PKCS12_C)
     if( strcmp( "MBEDTLS_PKCS12_C", config ) == 0 )
     {
@@ -1666,62 +1602,6 @@
     }
 #endif /* MBEDTLS_VERSION_C */
 
-#if defined(MBEDTLS_X509_USE_C)
-    if( strcmp( "MBEDTLS_X509_USE_C", config ) == 0 )
-    {
-        MACRO_EXPANSION_TO_STR( MBEDTLS_X509_USE_C );
-        return( 0 );
-    }
-#endif /* MBEDTLS_X509_USE_C */
-
-#if defined(MBEDTLS_X509_CRT_PARSE_C)
-    if( strcmp( "MBEDTLS_X509_CRT_PARSE_C", config ) == 0 )
-    {
-        MACRO_EXPANSION_TO_STR( MBEDTLS_X509_CRT_PARSE_C );
-        return( 0 );
-    }
-#endif /* MBEDTLS_X509_CRT_PARSE_C */
-
-#if defined(MBEDTLS_X509_CRL_PARSE_C)
-    if( strcmp( "MBEDTLS_X509_CRL_PARSE_C", config ) == 0 )
-    {
-        MACRO_EXPANSION_TO_STR( MBEDTLS_X509_CRL_PARSE_C );
-        return( 0 );
-    }
-#endif /* MBEDTLS_X509_CRL_PARSE_C */
-
-#if defined(MBEDTLS_X509_CSR_PARSE_C)
-    if( strcmp( "MBEDTLS_X509_CSR_PARSE_C", config ) == 0 )
-    {
-        MACRO_EXPANSION_TO_STR( MBEDTLS_X509_CSR_PARSE_C );
-        return( 0 );
-    }
-#endif /* MBEDTLS_X509_CSR_PARSE_C */
-
-#if defined(MBEDTLS_X509_CREATE_C)
-    if( strcmp( "MBEDTLS_X509_CREATE_C", config ) == 0 )
-    {
-        MACRO_EXPANSION_TO_STR( MBEDTLS_X509_CREATE_C );
-        return( 0 );
-    }
-#endif /* MBEDTLS_X509_CREATE_C */
-
-#if defined(MBEDTLS_X509_CRT_WRITE_C)
-    if( strcmp( "MBEDTLS_X509_CRT_WRITE_C", config ) == 0 )
-    {
-        MACRO_EXPANSION_TO_STR( MBEDTLS_X509_CRT_WRITE_C );
-        return( 0 );
-    }
-#endif /* MBEDTLS_X509_CRT_WRITE_C */
-
-#if defined(MBEDTLS_X509_CSR_WRITE_C)
-    if( strcmp( "MBEDTLS_X509_CSR_WRITE_C", config ) == 0 )
-    {
-        MACRO_EXPANSION_TO_STR( MBEDTLS_X509_CSR_WRITE_C );
-        return( 0 );
-    }
-#endif /* MBEDTLS_X509_CSR_WRITE_C */
-
 #if defined(MBEDTLS_XTEA_C)
     if( strcmp( "MBEDTLS_XTEA_C", config ) == 0 )
     {
diff --git a/scripts/config.pl b/scripts/config.pl
index bdd2090..b667905 100755
--- a/scripts/config.pl
+++ b/scripts/config.pl
@@ -29,10 +29,6 @@
 #   MBEDTLS_NO_DEFAULT_ENTROPY_SOURCES
 #   MBEDTLS_NO_PLATFORM_ENTROPY
 #   MBEDTLS_RSA_NO_CRT
-#   MBEDTLS_X509_ALLOW_EXTENSIONS_NON_V3
-#   MBEDTLS_X509_ALLOW_UNSUPPORTED_CRITICAL_EXTENSION
-#       - this could be enabled if the respective tests were adapted
-#   MBEDTLS_PKCS11_C
 #   MBEDTLS_USE_PSA_CRYPTO
 #       - experimental, and more an alternative implementation than a feature
 #   and any symbol beginning _ALT
@@ -87,9 +83,6 @@
 MBEDTLS_NO_DEFAULT_ENTROPY_SOURCES
 MBEDTLS_NO_PLATFORM_ENTROPY
 MBEDTLS_RSA_NO_CRT
-MBEDTLS_X509_ALLOW_EXTENSIONS_NON_V3
-MBEDTLS_X509_ALLOW_UNSUPPORTED_CRITICAL_EXTENSION
-MBEDTLS_PKCS11_C
 MBEDTLS_NO_UDBL_DIVISION
 MBEDTLS_NO_64BIT_MULTIPLICATION
 MBEDTLS_PSA_CRYPTO_SPM
diff --git a/tests/scripts/depends-pkalgs.pl b/tests/scripts/depends-pkalgs.pl
index 3522aa5..72c7f41 100755
--- a/tests/scripts/depends-pkalgs.pl
+++ b/tests/scripts/depends-pkalgs.pl
@@ -39,10 +39,9 @@
     'MBEDTLS_ECP_C'     => ['MBEDTLS_ECDSA_C',
                             'MBEDTLS_ECDH_C',
                             'MBEDTLS_ECJPAKE_C'],
-    'MBEDTLS_X509_RSASSA_PSS_SUPPORT'   => [],
-    'MBEDTLS_PKCS1_V21' => ['MBEDTLS_X509_RSASSA_PSS_SUPPORT'],
+    'MBEDTLS_PKCS1_V21' => [],
     'MBEDTLS_PKCS1_V15' => [],
-    'MBEDTLS_RSA_C'     => ['MBEDTLS_X509_RSASSA_PSS_SUPPORT'],
+    'MBEDTLS_RSA_C'     => [],
 );
 
 system( "cp $config_h $config_h.bak" ) and die;