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refactor get sig algo from pk

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Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
This commit is contained in:
Jerry Yu 2022-06-15 17:23:33 +08:00
parent 7898fd456a
commit f249ef7821
3 changed files with 118 additions and 122 deletions
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102
library/ssl_misc.h
View File

@ -2058,6 +2058,8 @@ static inline int mbedtls_ssl_tls13_get_pk_type_and_md_alg_from_sig_alg(
}
return( 0 );
}
#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
static inline int mbedtls_ssl_sig_alg_is_supported(
@ -2141,6 +2143,102 @@ static inline int mbedtls_ssl_sig_alg_is_supported(
((void) sig_alg);
return( 0 );
}
#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
static inline int mbedtls_ssl_tls13_sig_alg_is_available_for_pk(
mbedtls_ssl_context *ssl,
uint16_t sig_alg,
mbedtls_pk_context *key)
{
mbedtls_pk_type_t pk_type = mbedtls_ssl_sig_from_pk( key );
size_t key_size = mbedtls_pk_get_bitlen( key );
if( !mbedtls_ssl_sig_alg_is_supported( ssl, sig_alg ) )
return( 0 );
switch( pk_type )
{
#if defined(MBEDTLS_ECDSA_C)
case MBEDTLS_SSL_SIG_ECDSA:
switch( key_size )
{
#if defined(MBEDTLS_SHA256_C) && defined(MBEDTLS_ECP_DP_SECP256R1_ENABLED)
case 256:
return(
sig_alg == MBEDTLS_TLS1_3_SIG_ECDSA_SECP256R1_SHA256 );
#endif /* MBEDTLS_SHA256_C && MBEDTLS_ECP_DP_SECP256R1_ENABLED */
#if defined(MBEDTLS_SHA384_C) && defined(MBEDTLS_ECP_DP_SECP384R1_ENABLED)
case 384:
return(
sig_alg == MBEDTLS_TLS1_3_SIG_ECDSA_SECP384R1_SHA384 );
#endif /* MBEDTLS_SHA384_C && MBEDTLS_ECP_DP_SECP384R1_ENABLED */
#if defined(MBEDTLS_SHA512_C) && defined(MBEDTLS_ECP_DP_SECP521R1_ENABLED)
case 521:
return(
sig_alg == MBEDTLS_TLS1_3_SIG_ECDSA_SECP521R1_SHA512 );
#endif /* MBEDTLS_SHA512_C && MBEDTLS_ECP_DP_SECP521R1_ENABLED */
default:
break;
}
break;
#endif /* MBEDTLS_ECDSA_C */
#if defined(MBEDTLS_RSA_C)
case MBEDTLS_SSL_SIG_RSA:
switch( sig_alg )
{
#if defined(MBEDTLS_PKCS1_V21)
#if defined(MBEDTLS_SHA256_C)
case MBEDTLS_TLS1_3_SIG_RSA_PSS_RSAE_SHA256:
return( key_size <= 2048 );
#endif /* MBEDTLS_SHA256_C */
#if defined(MBEDTLS_SHA384_C)
case MBEDTLS_TLS1_3_SIG_RSA_PSS_RSAE_SHA384:
return( key_size <= 3072 );
#endif /* MBEDTLS_SHA384_C */
#if defined(MBEDTLS_SHA512_C)
case MBEDTLS_TLS1_3_SIG_RSA_PSS_RSAE_SHA512:
return( key_size <= 4096 );
#endif /* MBEDTLS_SHA512_C */
#endif /* MBEDTLS_PKCS1_V21 */
#if defined(MBEDTLS_PKCS1_V15)
#if defined(MBEDTLS_SHA256_C)
case MBEDTLS_TLS1_3_SIG_RSA_PKCS1_SHA256:
return( key_size <= 2048 );
#endif /* MBEDTLS_SHA256_C */
#if defined(MBEDTLS_SHA384_C)
case MBEDTLS_TLS1_3_SIG_RSA_PKCS1_SHA384:
return( key_size <= 3072 );
#endif /* MBEDTLS_SHA384_C */
#if defined(MBEDTLS_SHA512_C)
case MBEDTLS_TLS1_3_SIG_RSA_PKCS1_SHA512:
return( key_size <= 4096 );
#endif /* MBEDTLS_SHA512_C */
#endif /* MBEDTLS_PKCS1_V15 */
default:
break;
}
break;
#endif /* MBEDTLS_RSA_C */
default:
break;
}
return( 0 );
}
#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
#endif /* MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED */
#if defined(MBEDTLS_USE_PSA_CRYPTO) || defined(MBEDTLS_SSL_PROTO_TLS1_3)
@ -2276,10 +2374,6 @@ int mbedtls_ssl_parse_server_name_ext( mbedtls_ssl_context *ssl,
const unsigned char *end );
#endif /* MBEDTLS_SSL_SERVER_NAME_INDICATION */
int mbedtls_ssl_tls13_get_sig_alg_from_pk( mbedtls_ssl_context *ssl,
mbedtls_pk_context *own_key,
uint16_t *algorithm );
#if defined(MBEDTLS_SSL_ALPN)
int mbedtls_ssl_parse_alpn_ext( mbedtls_ssl_context *ssl,
const unsigned char *buf,

127
library/ssl_tls13_generic.c
View File

@ -854,120 +854,25 @@ cleanup:
/*
* STATE HANDLING: Output Certificate Verify
*/
int mbedtls_ssl_tls13_get_sig_alg_from_pk( mbedtls_ssl_context *ssl,
mbedtls_pk_context *own_key,
uint16_t *algorithm )
static int ssl_tls13_get_sig_alg_from_pk( mbedtls_ssl_context *ssl,
mbedtls_pk_context *own_key,
uint16_t *algorithm )
{
mbedtls_pk_type_t sig = mbedtls_ssl_sig_from_pk( own_key );
/* Determine the size of the key */
size_t own_key_size = mbedtls_pk_get_bitlen( own_key );
uint16_t *sig_alg = ssl->handshake->received_sig_algs;
*algorithm = MBEDTLS_TLS1_3_SIG_NONE;
((void) own_key_size);
switch( sig )
for( ; *sig_alg != MBEDTLS_TLS1_3_SIG_NONE ; sig_alg++ )
{
#if defined(MBEDTLS_ECDSA_C)
case MBEDTLS_SSL_SIG_ECDSA:
switch( own_key_size )
{
case 256:
*algorithm = MBEDTLS_TLS1_3_SIG_ECDSA_SECP256R1_SHA256;
return( 0 );
case 384:
*algorithm = MBEDTLS_TLS1_3_SIG_ECDSA_SECP384R1_SHA384;
return( 0 );
case 521:
*algorithm = MBEDTLS_TLS1_3_SIG_ECDSA_SECP521R1_SHA512;
return( 0 );
default:
MBEDTLS_SSL_DEBUG_MSG( 3,
( "unknown key size: %"
MBEDTLS_PRINTF_SIZET " bits",
own_key_size ) );
break;
}
break;
#endif /* MBEDTLS_ECDSA_C */
#if defined(MBEDTLS_RSA_C)
case MBEDTLS_SSL_SIG_RSA:
#if defined(MBEDTLS_PKCS1_V21)
#if defined(MBEDTLS_SHA256_C)
if( own_key_size <= 2048 &&
mbedtls_ssl_sig_alg_is_received( ssl,
MBEDTLS_TLS1_3_SIG_RSA_PSS_RSAE_SHA256 ) )
{
*algorithm = MBEDTLS_TLS1_3_SIG_RSA_PSS_RSAE_SHA256;
return( 0 );
}
else
#endif /* MBEDTLS_SHA256_C */
#if defined(MBEDTLS_SHA384_C)
if( own_key_size <= 3072 &&
mbedtls_ssl_sig_alg_is_received( ssl,
MBEDTLS_TLS1_3_SIG_RSA_PSS_RSAE_SHA384 ) )
{
*algorithm = MBEDTLS_TLS1_3_SIG_RSA_PSS_RSAE_SHA384;
return( 0 );
}
else
#endif /* MBEDTLS_SHA384_C */
#if defined(MBEDTLS_SHA512_C)
if( own_key_size <= 4096 &&
mbedtls_ssl_sig_alg_is_received( ssl,
MBEDTLS_TLS1_3_SIG_RSA_PSS_RSAE_SHA512 ) )
{
*algorithm = MBEDTLS_TLS1_3_SIG_RSA_PSS_RSAE_SHA512;
return( 0 );
}
else
#endif /* MBEDTLS_SHA512_C */
#endif /* MBEDTLS_PKCS1_V21 */
#if defined(MBEDTLS_PKCS1_V15)
#if defined(MBEDTLS_SHA256_C)
if( own_key_size <= 2048 &&
mbedtls_ssl_sig_alg_is_received( ssl,
MBEDTLS_TLS1_3_SIG_RSA_PKCS1_SHA256 ) )
{
*algorithm = MBEDTLS_TLS1_3_SIG_RSA_PKCS1_SHA256;
return( 0 );
}
else
#endif /* MBEDTLS_SHA256_C */
#if defined(MBEDTLS_SHA384_C)
if( own_key_size <= 3072 &&
mbedtls_ssl_sig_alg_is_received( ssl,
MBEDTLS_TLS1_3_SIG_RSA_PKCS1_SHA384 ) )
{
*algorithm = MBEDTLS_TLS1_3_SIG_RSA_PKCS1_SHA384;
return( 0 );
}
else
#endif /* MBEDTLS_SHA384_C */
#if defined(MBEDTLS_SHA512_C)
if( own_key_size <= 4096 &&
mbedtls_ssl_sig_alg_is_received( ssl,
MBEDTLS_TLS1_3_SIG_RSA_PKCS1_SHA512 ) )
{
*algorithm = MBEDTLS_TLS1_3_SIG_RSA_PKCS1_SHA512;
return( 0 );
}
else
#endif /* MBEDTLS_SHA512_C */
#endif /* MBEDTLS_PKCS1_V15 */
{
MBEDTLS_SSL_DEBUG_MSG( 3,
( "unknown key size: %"
MBEDTLS_PRINTF_SIZET " bits",
own_key_size ) );
}
break;
#endif /* MBEDTLS_RSA_C */
default:
MBEDTLS_SSL_DEBUG_MSG( 1,
( "unknown signature type : %u", sig ) );
break;
if( mbedtls_ssl_sig_alg_is_supported( ssl, *sig_alg) &&
mbedtls_ssl_tls13_sig_alg_is_available_for_pk(
ssl, *sig_alg, own_key ) )
{
*algorithm = *sig_alg;
return( 0 );
}
}
return( -1 );
}
@ -1024,7 +929,7 @@ static int ssl_tls13_write_certificate_verify_body( mbedtls_ssl_context *ssl,
* opaque signature<0..2^16-1>;
* } CertificateVerify;
*/
ret = mbedtls_ssl_tls13_get_sig_alg_from_pk( ssl, own_key, &algorithm );
ret = ssl_tls13_get_sig_alg_from_pk( ssl, own_key, &algorithm );
if( ret != 0 || ! mbedtls_ssl_sig_alg_is_received( ssl, algorithm ) )
{
MBEDTLS_SSL_DEBUG_MSG( 1,

11
library/ssl_tls13_server.c
View File

@ -352,7 +352,6 @@ static int ssl_tls13_pick_key_cert( mbedtls_ssl_context *ssl )
{
mbedtls_ssl_key_cert *key_cert, *key_cert_list;
const uint16_t *sig_alg = ssl->handshake->received_sig_algs;
uint16_t key_sig_alg;
#if defined(MBEDTLS_SSL_SERVER_NAME_INDICATION)
if( ssl->handshake->sni_key_cert != NULL )
@ -372,7 +371,6 @@ static int ssl_tls13_pick_key_cert( mbedtls_ssl_context *ssl )
for( key_cert = key_cert_list; key_cert != NULL;
key_cert = key_cert->next )
{
int ret;
MBEDTLS_SSL_DEBUG_CRT( 3, "certificate (chain) candidate",
key_cert->cert );
@ -391,11 +389,9 @@ static int ssl_tls13_pick_key_cert( mbedtls_ssl_context *ssl )
continue;
}
ret = mbedtls_ssl_tls13_get_sig_alg_from_pk(
ssl, &key_cert->cert->pk, &key_sig_alg );
if( ret != 0 )
continue;
if( *sig_alg == key_sig_alg )
MBEDTLS_SSL_DEBUG_MSG( 2,("Try get sig alg %04x",*sig_alg));
if( mbedtls_ssl_tls13_sig_alg_is_available_for_pk(
ssl, *sig_alg, &key_cert->cert->pk ) )
{
ssl->handshake->key_cert = key_cert;
MBEDTLS_SSL_DEBUG_CRT(
@ -406,6 +402,7 @@ static int ssl_tls13_pick_key_cert( mbedtls_ssl_context *ssl )
}
}
MBEDTLS_SSL_DEBUG_MSG( 2,("No signature algorithm found"));
return( -1 );
}
#endif /* MBEDTLS_X509_CRT_PARSE_C &&