Remove superfluous checking from MAC driver
The PSA core checks the key type and algorithm combination before
calling the driver, so the driver doesn't have to do this once more.
The PSA core will also not start an operation with a requested length
which is larger than the full MAC output size, so the output length check
in the driver isn't needed as long as the driver returns an error on
mac_setup if it doesn't support the underlying hash algorithm.
Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>
diff --git a/library/psa_crypto_mac.c b/library/psa_crypto_mac.c
index 6753ded..32ab885 100644
--- a/library/psa_crypto_mac.c
+++ b/library/psa_crypto_mac.c
@@ -329,20 +329,6 @@
#if defined(BUILTIN_ALG_HMAC)
if( PSA_ALG_IS_HMAC( alg ) )
{
- /* Sanity check. This shouldn't fail on a valid configuration. */
- if( PSA_MAC_LENGTH( psa_get_key_type( attributes ), 0, alg ) >
- sizeof( operation->ctx.hmac.opad ) )
- {
- status = PSA_ERROR_NOT_SUPPORTED;
- goto exit;
- }
-
- if( psa_get_key_type( attributes ) != PSA_KEY_TYPE_HMAC )
- {
- status = PSA_ERROR_INVALID_ARGUMENT;
- goto exit;
- }
-
status = psa_hmac_setup_internal( &operation->ctx.hmac,
key_buffer,
key_buffer_size,