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Merge pull request #2176 from miyazakh/no_signature_algo

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Add macro definition to disable signature algorithms extension
This commit is contained in:
Chris Conlon
2019-04-04 15:35:00 -07:00
committed by GitHub
parent db83e6dd31 f81446bf69
commit 9c3cb2fbba
3 changed files with 29 additions and 14 deletions
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38
src/tls.c
View File

@ -6007,7 +6007,7 @@ int TLSX_Cookie_Use(WOLFSSL* ssl, byte* data, word16 len, byte* mac,
#define CKE_PARSE(a, b, c, d) 0 #define CKE_PARSE(a, b, c, d) 0
#endif #endif
#if !defined(WOLFSSL_NO_SIGALG)
/******************************************************************************/ /******************************************************************************/
/* Signature Algorithms */ /* Signature Algorithms */
/******************************************************************************/ /******************************************************************************/
@ -6017,6 +6017,7 @@ int TLSX_Cookie_Use(WOLFSSL* ssl, byte* data, word16 len, byte* mac,
* data Unused * data Unused
* returns the length of data that will be in the extension. * returns the length of data that will be in the extension.
*/ */
static word16 TLSX_SignatureAlgorithms_GetSize(void* data) static word16 TLSX_SignatureAlgorithms_GetSize(void* data)
{ {
WOLFSSL* ssl = (WOLFSSL*)data; WOLFSSL* ssl = (WOLFSSL*)data;
@ -6127,7 +6128,7 @@ static int TLSX_SetSignatureAlgorithms(TLSX** extensions, const void* data,
#define SA_GET_SIZE TLSX_SignatureAlgorithms_GetSize #define SA_GET_SIZE TLSX_SignatureAlgorithms_GetSize
#define SA_WRITE TLSX_SignatureAlgorithms_Write #define SA_WRITE TLSX_SignatureAlgorithms_Write
#define SA_PARSE TLSX_SignatureAlgorithms_Parse #define SA_PARSE TLSX_SignatureAlgorithms_Parse
#endif
/******************************************************************************/ /******************************************************************************/
/* Signature Algorithms Certificate */ /* Signature Algorithms Certificate */
/******************************************************************************/ /******************************************************************************/
@ -8621,10 +8622,10 @@ void TLSX_FreeAll(TLSX* list, void* heap)
case TLSX_APPLICATION_LAYER_PROTOCOL: case TLSX_APPLICATION_LAYER_PROTOCOL:
ALPN_FREE_ALL((ALPN*)extension->data, heap); ALPN_FREE_ALL((ALPN*)extension->data, heap);
break; break;
#if !defined(WOLFSSL_NO_SIGALG)
case TLSX_SIGNATURE_ALGORITHMS: case TLSX_SIGNATURE_ALGORITHMS:
break; break;
#endif
#ifdef WOLFSSL_TLS13 #ifdef WOLFSSL_TLS13
case TLSX_SUPPORTED_VERSIONS: case TLSX_SUPPORTED_VERSIONS:
break; break;
@ -8756,11 +8757,11 @@ static int TLSX_GetSize(TLSX* list, byte* semaphore, byte msgType, word16* pLeng
case TLSX_APPLICATION_LAYER_PROTOCOL: case TLSX_APPLICATION_LAYER_PROTOCOL:
length += ALPN_GET_SIZE((ALPN*)extension->data); length += ALPN_GET_SIZE((ALPN*)extension->data);
break; break;
#if !defined(WOLFSSL_NO_SIGALG)
case TLSX_SIGNATURE_ALGORITHMS: case TLSX_SIGNATURE_ALGORITHMS:
length += SA_GET_SIZE(extension->data); length += SA_GET_SIZE(extension->data);
break; break;
#endif
#ifdef WOLFSSL_TLS13 #ifdef WOLFSSL_TLS13
case TLSX_SUPPORTED_VERSIONS: case TLSX_SUPPORTED_VERSIONS:
ret = SV_GET_SIZE(extension->data, msgType, &length); ret = SV_GET_SIZE(extension->data, msgType, &length);
@ -8917,12 +8918,12 @@ static int TLSX_Write(TLSX* list, byte* output, byte* semaphore,
WOLFSSL_MSG("ALPN extension to write"); WOLFSSL_MSG("ALPN extension to write");
offset += ALPN_WRITE((ALPN*)extension->data, output + offset); offset += ALPN_WRITE((ALPN*)extension->data, output + offset);
break; break;
#if !defined(WOLFSSL_NO_SIGALG)
case TLSX_SIGNATURE_ALGORITHMS: case TLSX_SIGNATURE_ALGORITHMS:
WOLFSSL_MSG("Signature Algorithms extension to write"); WOLFSSL_MSG("Signature Algorithms extension to write");
offset += SA_WRITE(extension->data, output + offset); offset += SA_WRITE(extension->data, output + offset);
break; break;
#endif
#ifdef WOLFSSL_TLS13 #ifdef WOLFSSL_TLS13
case TLSX_SUPPORTED_VERSIONS: case TLSX_SUPPORTED_VERSIONS:
WOLFSSL_MSG("Supported Versions extension to write"); WOLFSSL_MSG("Supported Versions extension to write");
@ -9481,12 +9482,15 @@ int TLSX_PopulateExtensions(WOLFSSL* ssl, byte isServer)
#endif /* (HAVE_ECC || HAVE_CURVE25519) && HAVE_SUPPORTED_CURVES */ #endif /* (HAVE_ECC || HAVE_CURVE25519) && HAVE_SUPPORTED_CURVES */
} /* is not server */ } /* is not server */
#if !defined(WOLFSSL_NO_SIGALG)
WOLFSSL_MSG("Adding signature algorithms extension"); WOLFSSL_MSG("Adding signature algorithms extension");
if ((ret = TLSX_SetSignatureAlgorithms(&ssl->extensions, ssl, ssl->heap)) if ((ret = TLSX_SetSignatureAlgorithms(&ssl->extensions, ssl, ssl->heap))
!= 0) { != 0) {
return ret; return ret;
} }
#else
ret = 0;
#endif
#ifdef WOLFSSL_TLS13 #ifdef WOLFSSL_TLS13
if (!isServer && IsAtLeastTLSv1_3(ssl->version)) { if (!isServer && IsAtLeastTLSv1_3(ssl->version)) {
/* Add mandatory TLS v1.3 extension: supported version */ /* Add mandatory TLS v1.3 extension: supported version */
@ -9668,8 +9672,10 @@ int TLSX_GetRequestSize(WOLFSSL* ssl, byte msgType, word16* pLength)
PF_VALIDATE_REQUEST(ssl, semaphore); PF_VALIDATE_REQUEST(ssl, semaphore);
QSH_VALIDATE_REQUEST(ssl, semaphore); QSH_VALIDATE_REQUEST(ssl, semaphore);
WOLF_STK_VALIDATE_REQUEST(ssl); WOLF_STK_VALIDATE_REQUEST(ssl);
#if !defined(WOLFSSL_NO_SIGALG)
if (ssl->suites->hashSigAlgoSz == 0) if (ssl->suites->hashSigAlgoSz == 0)
TURN_ON(semaphore, TLSX_ToSemaphore(TLSX_SIGNATURE_ALGORITHMS)); TURN_ON(semaphore, TLSX_ToSemaphore(TLSX_SIGNATURE_ALGORITHMS));
#endif
#if defined(WOLFSSL_TLS13) #if defined(WOLFSSL_TLS13)
if (!IsAtLeastTLSv1_2(ssl)) if (!IsAtLeastTLSv1_2(ssl))
TURN_ON(semaphore, TLSX_ToSemaphore(TLSX_SUPPORTED_VERSIONS)); TURN_ON(semaphore, TLSX_ToSemaphore(TLSX_SUPPORTED_VERSIONS));
@ -9709,11 +9715,14 @@ int TLSX_GetRequestSize(WOLFSSL* ssl, byte msgType, word16* pLength)
} }
#endif #endif
} }
#ifdef WOLFSSL_TLS13 #ifdef WOLFSSL_TLS13
#ifndef NO_CERTS #ifndef NO_CERTS
else if (msgType == certificate_request) { else if (msgType == certificate_request) {
XMEMSET(semaphore, 0xff, SEMAPHORE_SIZE); XMEMSET(semaphore, 0xff, SEMAPHORE_SIZE);
#if !defined(WOLFSSL_NO_SIGALG)
TURN_OFF(semaphore, TLSX_ToSemaphore(TLSX_SIGNATURE_ALGORITHMS)); TURN_OFF(semaphore, TLSX_ToSemaphore(TLSX_SIGNATURE_ALGORITHMS));
#endif
/* TODO: TLSX_SIGNED_CERTIFICATE_TIMESTAMP, /* TODO: TLSX_SIGNED_CERTIFICATE_TIMESTAMP,
* TLSX_CERTIFICATE_AUTHORITIES, OID_FILTERS * TLSX_CERTIFICATE_AUTHORITIES, OID_FILTERS
* TLSX_STATUS_REQUEST * TLSX_STATUS_REQUEST
@ -9721,7 +9730,6 @@ int TLSX_GetRequestSize(WOLFSSL* ssl, byte msgType, word16* pLength)
} }
#endif #endif
#endif #endif
if (ssl->extensions) if (ssl->extensions)
ret = TLSX_GetSize(ssl->extensions, semaphore, msgType, &length); ret = TLSX_GetSize(ssl->extensions, semaphore, msgType, &length);
if (ssl->ctx && ssl->ctx->extensions) if (ssl->ctx && ssl->ctx->extensions)
@ -9759,8 +9767,10 @@ int TLSX_WriteRequest(WOLFSSL* ssl, byte* output, byte msgType, word16* pOffset)
PF_VALIDATE_REQUEST(ssl, semaphore); PF_VALIDATE_REQUEST(ssl, semaphore);
WOLF_STK_VALIDATE_REQUEST(ssl); WOLF_STK_VALIDATE_REQUEST(ssl);
QSH_VALIDATE_REQUEST(ssl, semaphore); QSH_VALIDATE_REQUEST(ssl, semaphore);
#if !defined(WOLFSSL_NO_SIGALG)
if (ssl->suites->hashSigAlgoSz == 0) if (ssl->suites->hashSigAlgoSz == 0)
TURN_ON(semaphore, TLSX_ToSemaphore(TLSX_SIGNATURE_ALGORITHMS)); TURN_ON(semaphore, TLSX_ToSemaphore(TLSX_SIGNATURE_ALGORITHMS));
#endif
#ifdef WOLFSSL_TLS13 #ifdef WOLFSSL_TLS13
if (!IsAtLeastTLSv1_2(ssl)) if (!IsAtLeastTLSv1_2(ssl))
TURN_ON(semaphore, TLSX_ToSemaphore(TLSX_SUPPORTED_VERSIONS)); TURN_ON(semaphore, TLSX_ToSemaphore(TLSX_SUPPORTED_VERSIONS));
@ -9810,7 +9820,9 @@ int TLSX_WriteRequest(WOLFSSL* ssl, byte* output, byte msgType, word16* pOffset)
#ifndef NO_CERTS #ifndef NO_CERTS
else if (msgType == certificate_request) { else if (msgType == certificate_request) {
XMEMSET(semaphore, 0xff, SEMAPHORE_SIZE); XMEMSET(semaphore, 0xff, SEMAPHORE_SIZE);
#if !defined(WOLFSSL_NO_SIGALG)
TURN_OFF(semaphore, TLSX_ToSemaphore(TLSX_SIGNATURE_ALGORITHMS)); TURN_OFF(semaphore, TLSX_ToSemaphore(TLSX_SIGNATURE_ALGORITHMS));
#endif
/* TODO: TLSX_SIGNED_CERTIFICATE_TIMESTAMP, /* TODO: TLSX_SIGNED_CERTIFICATE_TIMESTAMP,
* TLSX_CERTIFICATE_AUTHORITIES, TLSX_OID_FILTERS * TLSX_CERTIFICATE_AUTHORITIES, TLSX_OID_FILTERS
* TLSX_STATUS_REQUEST * TLSX_STATUS_REQUEST
@ -9818,7 +9830,6 @@ int TLSX_WriteRequest(WOLFSSL* ssl, byte* output, byte msgType, word16* pOffset)
} }
#endif #endif
#endif #endif
if (ssl->extensions) { if (ssl->extensions) {
ret = TLSX_Write(ssl->extensions, output + offset, semaphore, ret = TLSX_Write(ssl->extensions, output + offset, semaphore,
msgType, &offset); msgType, &offset);
@ -10351,13 +10362,12 @@ int TLSX_Parse(WOLFSSL* ssl, byte* input, word16 length, byte msgType,
#endif #endif
ret = ALPN_PARSE(ssl, input + offset, size, isRequest); ret = ALPN_PARSE(ssl, input + offset, size, isRequest);
break; break;
#if !defined(WOLFSSL_NO_SIGALG)
case TLSX_SIGNATURE_ALGORITHMS: case TLSX_SIGNATURE_ALGORITHMS:
WOLFSSL_MSG("Signature Algorithms extension received"); WOLFSSL_MSG("Signature Algorithms extension received");
if (!IsAtLeastTLSv1_2(ssl)) if (!IsAtLeastTLSv1_2(ssl))
break; break;
#ifdef WOLFSSL_TLS13 #ifdef WOLFSSL_TLS13
if (IsAtLeastTLSv1_3(ssl->version) && if (IsAtLeastTLSv1_3(ssl->version) &&
msgType != client_hello && msgType != client_hello &&
@ -10367,7 +10377,7 @@ int TLSX_Parse(WOLFSSL* ssl, byte* input, word16 length, byte msgType,
#endif #endif
ret = SA_PARSE(ssl, input + offset, size, isRequest, suites); ret = SA_PARSE(ssl, input + offset, size, isRequest, suites);
break; break;
#endif
#ifdef WOLFSSL_TLS13 #ifdef WOLFSSL_TLS13
case TLSX_SUPPORTED_VERSIONS: case TLSX_SUPPORTED_VERSIONS:
WOLFSSL_MSG("Skipping Supported Versions - already processed"); WOLFSSL_MSG("Skipping Supported Versions - already processed");

2
wolfssl/internal.h
View File

@ -2045,7 +2045,9 @@ typedef enum {
TLSX_STATUS_REQUEST = 0x0005, /* a.k.a. OCSP stapling */ TLSX_STATUS_REQUEST = 0x0005, /* a.k.a. OCSP stapling */
TLSX_SUPPORTED_GROUPS = 0x000a, /* a.k.a. Supported Curves */ TLSX_SUPPORTED_GROUPS = 0x000a, /* a.k.a. Supported Curves */
TLSX_EC_POINT_FORMATS = 0x000b, TLSX_EC_POINT_FORMATS = 0x000b,
#if !defined(WOLFSSL_NO_SIGALG)
TLSX_SIGNATURE_ALGORITHMS = 0x000d, TLSX_SIGNATURE_ALGORITHMS = 0x000d,
#endif
TLSX_APPLICATION_LAYER_PROTOCOL = 0x0010, /* a.k.a. ALPN */ TLSX_APPLICATION_LAYER_PROTOCOL = 0x0010, /* a.k.a. ALPN */
TLSX_STATUS_REQUEST_V2 = 0x0011, /* a.k.a. OCSP stapling v2 */ TLSX_STATUS_REQUEST_V2 = 0x0011, /* a.k.a. OCSP stapling v2 */
TLSX_QUANTUM_SAFE_HYBRID = 0x0018, /* a.k.a. QSH */ TLSX_QUANTUM_SAFE_HYBRID = 0x0018, /* a.k.a. QSH */

3
wolfssl/wolfcrypt/settings.h
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@ -1989,6 +1989,9 @@ extern void uITRON4_free(void *p) ;
#define WOLF_CRYPTO_CB #define WOLF_CRYPTO_CB
#endif #endif
#if defined(WOLFSSL_TLS13) && defined(WOLFSSL_NO_SIGALG)
#error TLS 1.3 requires the Signature Algorithms extension to be enabled
#endif
#ifdef __cplusplus #ifdef __cplusplus
} /* extern "C" */ } /* extern "C" */