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add mbedtls_pk_sign_ext

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Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
This commit is contained in:
Jerry Yu 2022-02-24 15:52:15 +08:00
parent 3a58b462b6
commit d69439aa61
2 changed files with 109 additions and 0 deletions
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70
library/pk.c
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@ -518,6 +518,76 @@ int mbedtls_pk_sign( mbedtls_pk_context *ctx, mbedtls_md_type_t md_alg,
f_rng, p_rng, NULL ) );
}
/*
* Make a signature with options
*/
int mbedtls_pk_sign_ext( mbedtls_pk_type_t type, const void *options,
mbedtls_pk_context *ctx, mbedtls_md_type_t md_alg,
const unsigned char *hash, size_t hash_len,
unsigned char *sig, size_t sig_size, size_t *sig_len,
int (*f_rng)(void *, unsigned char *, size_t), void *p_rng )
{
PK_VALIDATE_RET( ctx != NULL );
PK_VALIDATE_RET( ( md_alg == MBEDTLS_MD_NONE && hash_len == 0 ) ||
hash != NULL );
PK_VALIDATE_RET( sig != NULL );
*sig_len = 0;
if( ctx->pk_info == NULL )
return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
if( ! mbedtls_pk_can_do( ctx, type ) )
return( MBEDTLS_ERR_PK_TYPE_MISMATCH );
if( type != MBEDTLS_PK_RSASSA_PSS )
{
/* General case: no options */
if( options != NULL )
return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
return( mbedtls_pk_sign_restartable( ctx, md_alg, hash, hash_len,
sig, sig_size, sig_len,
f_rng, p_rng, NULL ) );
}
#if defined(MBEDTLS_RSA_C) && defined(MBEDTLS_PKCS1_V21)
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
const mbedtls_pk_rsassa_pss_options *pss_opts;
#if SIZE_MAX > UINT_MAX
if( md_alg == MBEDTLS_MD_NONE && UINT_MAX < hash_len )
return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
#endif /* SIZE_MAX > UINT_MAX */
if( options == NULL )
return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
pss_opts = (const mbedtls_pk_rsassa_pss_options *) options;
if( sig_size < mbedtls_pk_get_len( ctx ) )
return( MBEDTLS_ERR_RSA_VERIFY_FAILED );
if( mbedtls_rsa_set_padding( mbedtls_pk_rsa( *ctx ),
MBEDTLS_RSA_PKCS_V21,
md_alg ) != 0 )
{
return( MBEDTLS_ERR_PK_BAD_INPUT_DATA );
}
*sig_len = mbedtls_pk_get_len( ctx );
ret = mbedtls_rsa_rsassa_pss_sign_ext( mbedtls_pk_rsa( *ctx ),
f_rng, p_rng,
md_alg,
(unsigned int) hash_len,
hash,pss_opts->expected_salt_len,
sig
);
return( ret );
#else
return( MBEDTLS_ERR_PK_FEATURE_UNAVAILABLE );
#endif /* MBEDTLS_RSA_C && MBEDTLS_PKCS1_V21 */
}
/*
* Decrypt message
*/