diff options
Diffstat (limited to 'thirdparty/mbedtls/library/ssl_tls.c')
| -rw-r--r-- | thirdparty/mbedtls/library/ssl_tls.c | 50 |
1 files changed, 34 insertions, 16 deletions
diff --git a/thirdparty/mbedtls/library/ssl_tls.c b/thirdparty/mbedtls/library/ssl_tls.c index 617dedb1b0..236e52d767 100644 --- a/thirdparty/mbedtls/library/ssl_tls.c +++ b/thirdparty/mbedtls/library/ssl_tls.c @@ -501,6 +501,7 @@ int mbedtls_ssl_derive_keys( mbedtls_ssl_context *ssl ) unsigned char *key2; unsigned char *mac_enc; unsigned char *mac_dec; + size_t mac_key_len; size_t iv_copy_len; const mbedtls_cipher_info_t *cipher_info; const mbedtls_md_info_t *md_info; @@ -692,6 +693,7 @@ int mbedtls_ssl_derive_keys( mbedtls_ssl_context *ssl ) cipher_info->mode == MBEDTLS_MODE_CCM ) { transform->maclen = 0; + mac_key_len = 0; transform->ivlen = 12; transform->fixed_ivlen = 4; @@ -712,7 +714,8 @@ int mbedtls_ssl_derive_keys( mbedtls_ssl_context *ssl ) } /* Get MAC length */ - transform->maclen = mbedtls_md_get_size( md_info ); + mac_key_len = mbedtls_md_get_size( md_info ); + transform->maclen = mac_key_len; #if defined(MBEDTLS_SSL_TRUNCATED_HMAC) /* @@ -721,7 +724,16 @@ int mbedtls_ssl_derive_keys( mbedtls_ssl_context *ssl ) * so we only need to adjust the length here. */ if( session->trunc_hmac == MBEDTLS_SSL_TRUNC_HMAC_ENABLED ) + { transform->maclen = MBEDTLS_SSL_TRUNCATED_HMAC_LEN; + +#if defined(MBEDTLS_SSL_TRUNCATED_HMAC_COMPAT) + /* Fall back to old, non-compliant version of the truncated + * HMAC implementation which also truncates the key + * (Mbed TLS versions from 1.3 to 2.6.0) */ + mac_key_len = transform->maclen; +#endif + } #endif /* MBEDTLS_SSL_TRUNCATED_HMAC */ /* IV length */ @@ -783,11 +795,11 @@ int mbedtls_ssl_derive_keys( mbedtls_ssl_context *ssl ) #if defined(MBEDTLS_SSL_CLI_C) if( ssl->conf->endpoint == MBEDTLS_SSL_IS_CLIENT ) { - key1 = keyblk + transform->maclen * 2; - key2 = keyblk + transform->maclen * 2 + transform->keylen; + key1 = keyblk + mac_key_len * 2; + key2 = keyblk + mac_key_len * 2 + transform->keylen; mac_enc = keyblk; - mac_dec = keyblk + transform->maclen; + mac_dec = keyblk + mac_key_len; /* * This is not used in TLS v1.1. @@ -803,10 +815,10 @@ int mbedtls_ssl_derive_keys( mbedtls_ssl_context *ssl ) #if defined(MBEDTLS_SSL_SRV_C) if( ssl->conf->endpoint == MBEDTLS_SSL_IS_SERVER ) { - key1 = keyblk + transform->maclen * 2 + transform->keylen; - key2 = keyblk + transform->maclen * 2; + key1 = keyblk + mac_key_len * 2 + transform->keylen; + key2 = keyblk + mac_key_len * 2; - mac_enc = keyblk + transform->maclen; + mac_enc = keyblk + mac_key_len; mac_dec = keyblk; /* @@ -828,14 +840,14 @@ int mbedtls_ssl_derive_keys( mbedtls_ssl_context *ssl ) #if defined(MBEDTLS_SSL_PROTO_SSL3) if( ssl->minor_ver == MBEDTLS_SSL_MINOR_VERSION_0 ) { - if( transform->maclen > sizeof transform->mac_enc ) + if( mac_key_len > sizeof transform->mac_enc ) { MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) ); return( MBEDTLS_ERR_SSL_INTERNAL_ERROR ); } - memcpy( transform->mac_enc, mac_enc, transform->maclen ); - memcpy( transform->mac_dec, mac_dec, transform->maclen ); + memcpy( transform->mac_enc, mac_enc, mac_key_len ); + memcpy( transform->mac_dec, mac_dec, mac_key_len ); } else #endif /* MBEDTLS_SSL_PROTO_SSL3 */ @@ -843,8 +855,8 @@ int mbedtls_ssl_derive_keys( mbedtls_ssl_context *ssl ) defined(MBEDTLS_SSL_PROTO_TLS1_2) if( ssl->minor_ver >= MBEDTLS_SSL_MINOR_VERSION_1 ) { - mbedtls_md_hmac_starts( &transform->md_ctx_enc, mac_enc, transform->maclen ); - mbedtls_md_hmac_starts( &transform->md_ctx_dec, mac_dec, transform->maclen ); + mbedtls_md_hmac_starts( &transform->md_ctx_enc, mac_enc, mac_key_len ); + mbedtls_md_hmac_starts( &transform->md_ctx_dec, mac_dec, mac_key_len ); } else #endif @@ -864,7 +876,7 @@ int mbedtls_ssl_derive_keys( mbedtls_ssl_context *ssl ) transform->iv_enc, transform->iv_dec, iv_copy_len, mac_enc, mac_dec, - transform->maclen ) ) != 0 ) + mac_key_len ) ) != 0 ) { MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_hw_record_init", ret ); return( MBEDTLS_ERR_SSL_HW_ACCEL_FAILED ); @@ -877,7 +889,7 @@ int mbedtls_ssl_derive_keys( mbedtls_ssl_context *ssl ) { ssl->conf->f_export_keys( ssl->conf->p_export_keys, session->master, keyblk, - transform->maclen, transform->keylen, + mac_key_len, transform->keylen, iv_copy_len ); } #endif @@ -7673,8 +7685,14 @@ int mbedtls_ssl_config_defaults( mbedtls_ssl_config *conf, * Default */ default: - conf->min_major_ver = MBEDTLS_SSL_MAJOR_VERSION_3; - conf->min_minor_ver = MBEDTLS_SSL_MINOR_VERSION_1; /* TLS 1.0 */ + conf->min_major_ver = ( MBEDTLS_SSL_MIN_MAJOR_VERSION > + MBEDTLS_SSL_MIN_VALID_MAJOR_VERSION ) ? + MBEDTLS_SSL_MIN_MAJOR_VERSION : + MBEDTLS_SSL_MIN_VALID_MAJOR_VERSION; + conf->min_minor_ver = ( MBEDTLS_SSL_MIN_MINOR_VERSION > + MBEDTLS_SSL_MIN_VALID_MINOR_VERSION ) ? + MBEDTLS_SSL_MIN_MINOR_VERSION : + MBEDTLS_SSL_MIN_VALID_MINOR_VERSION; conf->max_major_ver = MBEDTLS_SSL_MAX_MAJOR_VERSION; conf->max_minor_ver = MBEDTLS_SSL_MAX_MINOR_VERSION; |