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psa: mac: Add driver delegation support for psa_mac_verify()

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Signed-off-by: Ronald Cron <ronald.cron@arm.com>
This commit is contained in:
Ronald Cron 2021-06-18 14:51:29 +02:00
parent cd989b5598
commit a587cbc3a4
1 changed files with 15 additions and 11 deletions
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26
library/psa_crypto.c
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@ -2536,25 +2536,29 @@ psa_status_t psa_mac_verify( mbedtls_svc_key_id_t key,
size_t mac_length)
{
psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
psa_mac_operation_t operation = PSA_MAC_OPERATION_INIT;
uint8_t actual_mac[PSA_MAC_MAX_SIZE];
size_t actual_mac_length;
status = psa_mac_verify_setup( &operation, key, alg );
status = psa_mac_compute_internal( key, alg,
input, input_length,
actual_mac, sizeof( actual_mac ),
&actual_mac_length, 0 );
if( status != PSA_SUCCESS )
goto exit;
status = psa_mac_update( &operation, input, input_length );
if( status != PSA_SUCCESS )
if( mac_length != actual_mac_length )
{
status = PSA_ERROR_INVALID_SIGNATURE;
goto exit;
status = psa_mac_verify_finish( &operation, mac, mac_length );
if( status != PSA_SUCCESS )
}
if( mbedtls_psa_safer_memcmp( mac, actual_mac, actual_mac_length ) != 0 )
{
status = PSA_ERROR_INVALID_SIGNATURE;
goto exit;
}
exit:
if ( status == PSA_SUCCESS )
status = psa_mac_abort( &operation );
else
psa_mac_abort( &operation );
mbedtls_platform_zeroize( actual_mac, sizeof( actual_mac ) );
return ( status );
}