diff --git a/library/ssl_tls.c b/library/ssl_tls.c index 65e43a1677..e9a4d1b34b 100644 --- a/library/ssl_tls.c +++ b/library/ssl_tls.c @@ -1009,82 +1009,6 @@ static void ssl_update_checksum_sha384( mbedtls_ssl_context *ssl, #if defined(MBEDTLS_SSL_PROTO_TLS1_2) -#if defined(MBEDTLS_SHA256_C) -static void ssl_calc_finished_tls_sha256( - mbedtls_ssl_context *ssl, unsigned char *buf, int from ) -{ - int len = 12; - const char *sender; - unsigned char padbuf[32]; -#if defined(MBEDTLS_USE_PSA_CRYPTO) - size_t hash_size; - psa_hash_operation_t sha256_psa = PSA_HASH_OPERATION_INIT; - psa_status_t status; -#else - mbedtls_sha256_context sha256; -#endif - - mbedtls_ssl_session *session = ssl->session_negotiate; - if( !session ) - session = ssl->session; - - sender = ( from == MBEDTLS_SSL_IS_CLIENT ) - ? "client finished" - : "server finished"; - -#if defined(MBEDTLS_USE_PSA_CRYPTO) - sha256_psa = psa_hash_operation_init(); - - MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> calc PSA finished tls sha256" ) ); - - status = psa_hash_clone( &ssl->handshake->fin_sha256_psa, &sha256_psa ); - if( status != PSA_SUCCESS ) - { - MBEDTLS_SSL_DEBUG_MSG( 2, ( "PSA hash clone failed" ) ); - return; - } - - status = psa_hash_finish( &sha256_psa, padbuf, sizeof( padbuf ), &hash_size ); - if( status != PSA_SUCCESS ) - { - MBEDTLS_SSL_DEBUG_MSG( 2, ( "PSA hash finish failed" ) ); - return; - } - MBEDTLS_SSL_DEBUG_BUF( 3, "PSA calculated padbuf", padbuf, 32 ); -#else - - mbedtls_sha256_init( &sha256 ); - - MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> calc finished tls sha256" ) ); - - mbedtls_sha256_clone( &sha256, &ssl->handshake->fin_sha256 ); - - /* - * TLSv1.2: - * hash = PRF( master, finished_label, - * Hash( handshake ) )[0.11] - */ - -#if !defined(MBEDTLS_SHA256_ALT) - MBEDTLS_SSL_DEBUG_BUF( 4, "finished sha2 state", (unsigned char *) - sha256.state, sizeof( sha256.state ) ); -#endif - - mbedtls_sha256_finish( &sha256, padbuf ); - mbedtls_sha256_free( &sha256 ); -#endif /* MBEDTLS_USE_PSA_CRYPTO */ - - ssl->handshake->tls_prf( session->master, 48, sender, - padbuf, 32, buf, len ); - - MBEDTLS_SSL_DEBUG_BUF( 3, "calc finished result", buf, len ); - - mbedtls_platform_zeroize( padbuf, sizeof( padbuf ) ); - - MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= calc finished" ) ); -} -#endif /* MBEDTLS_SHA256_C */ - #if defined(MBEDTLS_SHA384_C) static void ssl_calc_finished_tls_sha384( @@ -7967,6 +7891,83 @@ exit: } #endif /* MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED */ + +#if defined(MBEDTLS_SHA256_C) +static void ssl_calc_finished_tls_sha256( + mbedtls_ssl_context *ssl, unsigned char *buf, int from ) +{ + int len = 12; + const char *sender; + unsigned char padbuf[32]; +#if defined(MBEDTLS_USE_PSA_CRYPTO) + size_t hash_size; + psa_hash_operation_t sha256_psa = PSA_HASH_OPERATION_INIT; + psa_status_t status; +#else + mbedtls_sha256_context sha256; +#endif + + mbedtls_ssl_session *session = ssl->session_negotiate; + if( !session ) + session = ssl->session; + + sender = ( from == MBEDTLS_SSL_IS_CLIENT ) + ? "client finished" + : "server finished"; + +#if defined(MBEDTLS_USE_PSA_CRYPTO) + sha256_psa = psa_hash_operation_init(); + + MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> calc PSA finished tls sha256" ) ); + + status = psa_hash_clone( &ssl->handshake->fin_sha256_psa, &sha256_psa ); + if( status != PSA_SUCCESS ) + { + MBEDTLS_SSL_DEBUG_MSG( 2, ( "PSA hash clone failed" ) ); + return; + } + + status = psa_hash_finish( &sha256_psa, padbuf, sizeof( padbuf ), &hash_size ); + if( status != PSA_SUCCESS ) + { + MBEDTLS_SSL_DEBUG_MSG( 2, ( "PSA hash finish failed" ) ); + return; + } + MBEDTLS_SSL_DEBUG_BUF( 3, "PSA calculated padbuf", padbuf, 32 ); +#else + + mbedtls_sha256_init( &sha256 ); + + MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> calc finished tls sha256" ) ); + + mbedtls_sha256_clone( &sha256, &ssl->handshake->fin_sha256 ); + + /* + * TLSv1.2: + * hash = PRF( master, finished_label, + * Hash( handshake ) )[0.11] + */ + +#if !defined(MBEDTLS_SHA256_ALT) + MBEDTLS_SSL_DEBUG_BUF( 4, "finished sha2 state", (unsigned char *) + sha256.state, sizeof( sha256.state ) ); +#endif + + mbedtls_sha256_finish( &sha256, padbuf ); + mbedtls_sha256_free( &sha256 ); +#endif /* MBEDTLS_USE_PSA_CRYPTO */ + + ssl->handshake->tls_prf( session->master, 48, sender, + padbuf, 32, buf, len ); + + MBEDTLS_SSL_DEBUG_BUF( 3, "calc finished result", buf, len ); + + mbedtls_platform_zeroize( padbuf, sizeof( padbuf ) ); + + MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= calc finished" ) ); +} +#endif /* MBEDTLS_SHA256_C */ + #endif /* MBEDTLS_SSL_PROTO_TLS1_2 */ #endif /* MBEDTLS_SSL_TLS_C */