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create sig_alg decode function

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Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
This commit is contained in:
Jerry Yu
2022-03-23 13:34:04 +08:00
parent 0c23fc39c3
commit 8c3388620d
2 changed files with 139 additions and 146 deletions
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90
library/ssl_tls13_generic.c
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@ -336,48 +336,14 @@ static int ssl_tls13_parse_certificate_verify( mbedtls_ssl_context *ssl,
}
/* We currently only support ECDSA-based signatures */
switch( algorithm )
if( mbedtls_ssl_tls13_get_pk_type_and_md_alg_from_sig_alg(
algorithm, &sig_alg, &md_alg ) == 0 )
{
#if defined(MBEDTLS_ECDSA_C)
case MBEDTLS_TLS1_3_SIG_ECDSA_SECP256R1_SHA256:
md_alg = MBEDTLS_MD_SHA256;
sig_alg = MBEDTLS_PK_ECDSA;
break;
case MBEDTLS_TLS1_3_SIG_ECDSA_SECP384R1_SHA384:
md_alg = MBEDTLS_MD_SHA384;
sig_alg = MBEDTLS_PK_ECDSA;
break;
case MBEDTLS_TLS1_3_SIG_ECDSA_SECP521R1_SHA512:
md_alg = MBEDTLS_MD_SHA512;
sig_alg = MBEDTLS_PK_ECDSA;
break;
#endif /* MBEDTLS_ECDSA_C */
#if defined(MBEDTLS_X509_RSASSA_PSS_SUPPORT)
#if defined(MBEDTLS_SHA256_C)
case MBEDTLS_TLS1_3_SIG_RSA_PSS_RSAE_SHA256:
md_alg = MBEDTLS_MD_SHA256;
sig_alg = MBEDTLS_PK_RSASSA_PSS;
break;
#endif /* MBEDTLS_SHA256_C */
#if defined(MBEDTLS_SHA384_C)
case MBEDTLS_TLS1_3_SIG_RSA_PSS_RSAE_SHA384:
md_alg = MBEDTLS_MD_SHA384;
sig_alg = MBEDTLS_PK_RSASSA_PSS;
break;
#endif /* MBEDTLS_SHA384_C */
#if defined(MBEDTLS_SHA512_C)
case MBEDTLS_TLS1_3_SIG_RSA_PSS_RSAE_SHA512:
md_alg = MBEDTLS_MD_SHA256;
sig_alg = MBEDTLS_PK_RSASSA_PSS;
break;
#endif /* MBEDTLS_SHA512_C */
#endif /* MBEDTLS_X509_RSASSA_PSS_SUPPORT */
default:
MBEDTLS_SSL_DEBUG_MSG( 1, ( "Certificate Verify: Unknown signature algorithm." ) );
goto error;
/* algorithm not in offered signature algorithms list */
MBEDTLS_SSL_DEBUG_MSG( 1, ( "Get pk type and md algorithm from "
"signature algorithm(%04x) fail.",
( unsigned int ) algorithm ) );
goto error;
}
MBEDTLS_SSL_DEBUG_MSG( 3, ( "Certificate Verify: Signature algorithm ( %04x )",
@ -987,9 +953,7 @@ cleanup:
*/
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 *pk_type,
mbedtls_md_type_t *md_alg)
uint16_t *algorithm )
{
mbedtls_pk_type_t sig = mbedtls_ssl_sig_from_pk( own_key );
/* Determine the size of the key */
@ -1005,18 +969,12 @@ static int ssl_tls13_get_sig_alg_from_pk( mbedtls_ssl_context *ssl,
{
case 256:
*algorithm = MBEDTLS_TLS1_3_SIG_ECDSA_SECP256R1_SHA256;
*md_alg = MBEDTLS_MD_SHA256;
*pk_type = MBEDTLS_PK_ECDSA;
return( 0 );
case 384:
*algorithm = MBEDTLS_TLS1_3_SIG_ECDSA_SECP384R1_SHA384;
*md_alg = MBEDTLS_MD_SHA384;
*pk_type = MBEDTLS_PK_ECDSA;
return( 0 );
case 521:
*algorithm = MBEDTLS_TLS1_3_SIG_ECDSA_SECP521R1_SHA512;
*md_alg = MBEDTLS_MD_SHA512;
*pk_type = MBEDTLS_PK_ECDSA;
return( 0 );
default:
MBEDTLS_SSL_DEBUG_MSG( 3,
@ -1037,8 +995,6 @@ static int ssl_tls13_get_sig_alg_from_pk( mbedtls_ssl_context *ssl,
MBEDTLS_TLS1_3_SIG_RSA_PSS_RSAE_SHA256 ) )
{
*algorithm = MBEDTLS_TLS1_3_SIG_RSA_PSS_RSAE_SHA256;
*md_alg = MBEDTLS_MD_SHA256;
*pk_type = MBEDTLS_PK_RSASSA_PSS;
return( 0 );
}
else
@ -1049,8 +1005,6 @@ static int ssl_tls13_get_sig_alg_from_pk( mbedtls_ssl_context *ssl,
MBEDTLS_TLS1_3_SIG_RSA_PSS_RSAE_SHA384 ) )
{
*algorithm = MBEDTLS_TLS1_3_SIG_RSA_PSS_RSAE_SHA384;
*md_alg = MBEDTLS_MD_SHA384;
*pk_type = MBEDTLS_PK_RSASSA_PSS;
return( 0 );
}
else
@ -1061,8 +1015,6 @@ static int ssl_tls13_get_sig_alg_from_pk( mbedtls_ssl_context *ssl,
MBEDTLS_TLS1_3_SIG_RSA_PSS_RSAE_SHA512 ) )
{
*algorithm = MBEDTLS_TLS1_3_SIG_RSA_PSS_RSAE_SHA512;
*md_alg = MBEDTLS_MD_SHA512;
*pk_type = MBEDTLS_PK_RSASSA_PSS;
return( 0 );
}
else
@ -1075,8 +1027,6 @@ static int ssl_tls13_get_sig_alg_from_pk( mbedtls_ssl_context *ssl,
MBEDTLS_TLS1_3_SIG_RSA_PKCS1_SHA256 ) )
{
*algorithm = MBEDTLS_TLS1_3_SIG_RSA_PKCS1_SHA256;
*md_alg = MBEDTLS_MD_SHA256;
*pk_type = MBEDTLS_PK_RSA;
return( 0 );
}
else
@ -1087,8 +1037,6 @@ static int ssl_tls13_get_sig_alg_from_pk( mbedtls_ssl_context *ssl,
MBEDTLS_TLS1_3_SIG_RSA_PKCS1_SHA384 ) )
{
*algorithm = MBEDTLS_TLS1_3_SIG_RSA_PKCS1_SHA384;
*md_alg = MBEDTLS_MD_SHA384;
*pk_type = MBEDTLS_PK_RSA;
return( 0 );
}
else
@ -1099,8 +1047,6 @@ static int ssl_tls13_get_sig_alg_from_pk( mbedtls_ssl_context *ssl,
MBEDTLS_TLS1_3_SIG_RSA_PKCS1_SHA512 ) )
{
*algorithm = MBEDTLS_TLS1_3_SIG_RSA_PKCS1_SHA512;
*md_alg = MBEDTLS_MD_SHA512;
*pk_type = MBEDTLS_PK_RSA;
return( 0 );
}
else
@ -1174,8 +1120,7 @@ static int ssl_tls13_write_certificate_verify_body( mbedtls_ssl_context *ssl,
* opaque signature<0..2^16-1>;
* } CertificateVerify;
*/
ret = ssl_tls13_get_sig_alg_from_pk( ssl, own_key, &algorithm,
&pk_type, &md_alg );
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,
@ -1189,6 +1134,23 @@ static int ssl_tls13_write_certificate_verify_body( mbedtls_ssl_context *ssl,
return( MBEDTLS_ERR_SSL_HANDSHAKE_FAILURE );
}
ret = mbedtls_ssl_tls13_get_pk_type_and_md_alg_from_sig_alg( algorithm,
&pk_type,
&md_alg );
if( ret == 0 )
{
MBEDTLS_SSL_DEBUG_MSG( 1,
( "signature algorithm is not supported." ) );
MBEDTLS_SSL_DEBUG_MSG( 1, ( "Signature algorithm is %s",
mbedtls_ssl_sig_alg_to_str( algorithm ) ) );
MBEDTLS_SSL_PEND_FATAL_ALERT( MBEDTLS_SSL_ALERT_MSG_HANDSHAKE_FAILURE,
MBEDTLS_ERR_SSL_HANDSHAKE_FAILURE );
return( MBEDTLS_ERR_SSL_HANDSHAKE_FAILURE );
}
/* Check there is space for the algorithm identifier (2 bytes) and the
* signature length (2 bytes).
*/