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Sort out RSA mechanisms

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* PSS needs to be parametrized by a hash.
* Don't use `_MGF1` in the names of macros for OAEP and PSS. No one
  ever uses anything else.
* Add brief documentation for the RSA signature mechanisms.
This commit is contained in:
Gilles Peskine
2018-06-26 15:53:48 +02:00
committed by itayzafrir
parent 9e73ff17d4
commit 55bf3d1171
3 changed files with 55 additions and 15 deletions
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8
library/psa_crypto.c
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@@ -1690,7 +1690,7 @@ psa_status_t psa_asymmetric_sign( psa_key_slot_t key,
else
#endif /* MBEDTLS_PKCS1_V15 */
#if defined(MBEDTLS_PKCS1_V21)
if( alg == PSA_ALG_RSA_PSS_MGF1 )
if( PSA_ALG_IS_RSA_PSS( alg ) )
{
mbedtls_rsa_set_padding( rsa, MBEDTLS_RSA_PKCS_V21, md_alg );
ret = mbedtls_rsa_rsassa_pss_sign( rsa,
@@ -1789,7 +1789,7 @@ psa_status_t psa_asymmetric_verify( psa_key_slot_t key,
else
#endif /* MBEDTLS_PKCS1_V15 */
#if defined(MBEDTLS_PKCS1_V21)
if( alg == PSA_ALG_RSA_PSS_MGF1 )
if( PSA_ALG_IS_RSA_PSS( alg ) )
{
mbedtls_rsa_set_padding( rsa, MBEDTLS_RSA_PKCS_V21, md_alg );
ret = mbedtls_rsa_rsassa_pss_verify( rsa,
@@ -1872,7 +1872,7 @@ psa_status_t psa_asymmetric_encrypt( psa_key_slot_t key,
else
#endif /* MBEDTLS_PKCS1_V15 */
#if defined(MBEDTLS_PKCS1_V21)
if( PSA_ALG_IS_RSA_OAEP_MGF1( alg ) )
if( PSA_ALG_IS_RSA_OAEP( alg ) )
{
return( PSA_ERROR_NOT_SUPPORTED );
}
@@ -1941,7 +1941,7 @@ psa_status_t psa_asymmetric_decrypt( psa_key_slot_t key,
else
#endif /* MBEDTLS_PKCS1_V15 */
#if defined(MBEDTLS_PKCS1_V21)
if( PSA_ALG_IS_RSA_OAEP_MGF1( alg ) )
if( PSA_ALG_IS_RSA_OAEP( alg ) )
{
return( PSA_ERROR_NOT_SUPPORTED );
}