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psa_validate_tag_length(): use PSA_WANT_ALG_xxx instead MBEDTLS_PSA_BUILTIN_ALG_xxx guards

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Signed-off-by: Przemek Stekiel <przemyslaw.stekiel@mobica.com>
This commit is contained in:
Przemek Stekiel 2022-10-06 17:06:56 +02:00
parent 8a05a646f4
commit 86679c7bd8
1 changed files with 8 additions and 9 deletions
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17
library/psa_crypto.c
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@ -3709,35 +3709,34 @@ exit:
return( status );
}
static psa_status_t psa_validate_tag_length( psa_aead_operation_t *operation,
psa_algorithm_t alg ) {
static psa_status_t psa_validate_tag_length( psa_algorithm_t alg ) {
const uint8_t tag_len = PSA_ALG_AEAD_GET_TAG_LENGTH( alg );
switch( PSA_ALG_AEAD_WITH_SHORTENED_TAG( alg, 0 ) )
{
#if defined(MBEDTLS_PSA_BUILTIN_ALG_CCM)
#if defined(PSA_WANT_ALG_CCM)
case PSA_ALG_AEAD_WITH_SHORTENED_TAG( PSA_ALG_CCM, 0 ):
/* CCM allows the following tag lengths: 4, 6, 8, 10, 12, 14, 16.*/
if( tag_len < 4 || tag_len > 16 || tag_len % 2 )
return( PSA_ERROR_INVALID_ARGUMENT );
break;
#endif /* MBEDTLS_PSA_BUILTIN_ALG_CCM */
#endif /* PSA_WANT_ALG_CCM */
#if defined(MBEDTLS_PSA_BUILTIN_ALG_GCM)
#if defined(PSA_WANT_ALG_GCM)
case PSA_ALG_AEAD_WITH_SHORTENED_TAG( PSA_ALG_GCM, 0 ):
/* GCM allows the following tag lengths: 4, 8, 12, 13, 14, 15, 16. */
if( tag_len != 4 && tag_len != 8 && ( tag_len < 12 || tag_len > 16 ) )
return( PSA_ERROR_INVALID_ARGUMENT );
break;
#endif /* MBEDTLS_PSA_BUILTIN_ALG_GCM */
#endif /* PSA_WANT_ALG_GCM */
#if defined(MBEDTLS_PSA_BUILTIN_ALG_CHACHA20_POLY1305)
#if defined(PSA_WANT_ALG_CHACHA20_POLY1305)
case PSA_ALG_AEAD_WITH_SHORTENED_TAG( PSA_ALG_CHACHA20_POLY1305, 0 ):
/* We only support the default tag length. */
if( tag_len != 16 )
return( PSA_ERROR_INVALID_ARGUMENT );
break;
#endif /* MBEDTLS_PSA_BUILTIN_ALG_CHACHA20_POLY1305 */
#endif /* PSA_WANT_ALG_CHACHA20_POLY1305 */
default:
(void) tag_len;
@ -3803,7 +3802,7 @@ static psa_status_t psa_aead_setup( psa_aead_operation_t *operation,
if( status != PSA_SUCCESS )
goto exit;
if( ( status = psa_validate_tag_length( operation, alg ) ) != PSA_SUCCESS )
if( ( status = psa_validate_tag_length( alg ) ) != PSA_SUCCESS )
goto exit;
operation->key_type = psa_get_key_type( &attributes );