From ce0e6a9dea61fa7153c189b2c3b3a07a82e322db Mon Sep 17 00:00:00 2001 From: Mateusz Starzyk Date: Tue, 17 Aug 2021 15:24:32 +0200 Subject: [PATCH 1/4] Require MESSAGE flag in PSA MAC setup. Signed-off-by: Mateusz Starzyk --- library/psa_crypto.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/library/psa_crypto.c b/library/psa_crypto.c index 3574b9842a..f87323c497 100644 --- a/library/psa_crypto.c +++ b/library/psa_crypto.c @@ -2329,7 +2329,7 @@ static psa_status_t psa_mac_setup( psa_mac_operation_t *operation, status = psa_get_and_lock_key_slot_with_policy( key, &slot, - is_sign ? PSA_KEY_USAGE_SIGN_HASH : PSA_KEY_USAGE_VERIFY_HASH, + is_sign ? PSA_KEY_USAGE_SIGN_MESSAGE : PSA_KEY_USAGE_VERIFY_MESSAGE, alg ); if( status != PSA_SUCCESS ) goto exit; @@ -2514,8 +2514,9 @@ static psa_status_t psa_mac_compute_internal( mbedtls_svc_key_id_t key, uint8_t operation_mac_size = 0; status = psa_get_and_lock_key_slot_with_policy( - key, &slot, - is_sign ? PSA_KEY_USAGE_SIGN_HASH : PSA_KEY_USAGE_VERIFY_HASH, + key, + &slot, + is_sign ? PSA_KEY_USAGE_SIGN_MESSAGE : PSA_KEY_USAGE_VERIFY_MESSAGE, alg ); if( status != PSA_SUCCESS ) goto exit; From cb0a7cd142257658c116a10c9d2926ba1b46bab6 Mon Sep 17 00:00:00 2001 From: Mateusz Starzyk Date: Thu, 19 Aug 2021 15:11:50 +0200 Subject: [PATCH 2/4] Fix mac_key_policy test function Signed-off-by: Mateusz Starzyk --- tests/suites/test_suite_psa_crypto.function | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tests/suites/test_suite_psa_crypto.function b/tests/suites/test_suite_psa_crypto.function index 150a3f43e3..3fe512e8e7 100644 --- a/tests/suites/test_suite_psa_crypto.function +++ b/tests/suites/test_suite_psa_crypto.function @@ -818,7 +818,7 @@ void mac_key_policy( int policy_usage_arg, mbedtls_test_update_key_usage_flags( policy_usage ) ); status = psa_mac_sign_setup( &operation, key, exercise_alg ); - if( ( policy_usage & PSA_KEY_USAGE_SIGN_HASH ) == 0 ) + if( ( mbedtls_test_update_key_usage_flags(policy_usage) & PSA_KEY_USAGE_SIGN_MESSAGE ) == 0 ) TEST_EQUAL( status, PSA_ERROR_NOT_PERMITTED ); else TEST_EQUAL( status, expected_status ); @@ -827,7 +827,7 @@ void mac_key_policy( int policy_usage_arg, memset( mac, 0, sizeof( mac ) ); status = psa_mac_verify_setup( &operation, key, exercise_alg ); - if( ( policy_usage & PSA_KEY_USAGE_VERIFY_HASH ) == 0 ) + if( ( mbedtls_test_update_key_usage_flags(policy_usage) & PSA_KEY_USAGE_VERIFY_MESSAGE ) == 0 ) TEST_EQUAL( status, PSA_ERROR_NOT_PERMITTED ); else TEST_EQUAL( status, expected_status ); From d07f4fc30fec6dcb6d79313b13ebd928559eef24 Mon Sep 17 00:00:00 2001 From: Mateusz Starzyk Date: Tue, 24 Aug 2021 11:01:23 +0200 Subject: [PATCH 3/4] Use separate expected results for MAC sign and verify key policy. Signed-off-by: Mateusz Starzyk --- tests/suites/test_suite_psa_crypto.data | 54 ++++++++++----------- tests/suites/test_suite_psa_crypto.function | 16 +++--- 2 files changed, 33 insertions(+), 37 deletions(-) diff --git a/tests/suites/test_suite_psa_crypto.data b/tests/suites/test_suite_psa_crypto.data index e3e9a5225a..bc4edb2b7b 100644 --- a/tests/suites/test_suite_psa_crypto.data +++ b/tests/suites/test_suite_psa_crypto.data @@ -418,111 +418,111 @@ key_attributes_init: PSA key policy: MAC, SIGN_HASH -> SIGN_HASH+MESSAGE depends_on:PSA_WANT_ALG_HMAC:PSA_WANT_ALG_SHA_256:PSA_WANT_KEY_TYPE_HMAC -mac_key_policy:PSA_KEY_USAGE_SIGN_HASH:PSA_ALG_HMAC(PSA_ALG_SHA_256):PSA_KEY_TYPE_HMAC:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_HMAC(PSA_ALG_SHA_256):PSA_SUCCESS +mac_key_policy:PSA_KEY_USAGE_SIGN_HASH:PSA_ALG_HMAC(PSA_ALG_SHA_256):PSA_KEY_TYPE_HMAC:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_HMAC(PSA_ALG_SHA_256):PSA_SUCCESS:PSA_ERROR_NOT_PERMITTED PSA key policy: MAC, VERIFY_HASH -> VERIFY_HASH+MESSAGE depends_on:PSA_WANT_ALG_HMAC:PSA_WANT_ALG_SHA_256:PSA_WANT_KEY_TYPE_HMAC -mac_key_policy:PSA_KEY_USAGE_VERIFY_HASH:PSA_ALG_HMAC(PSA_ALG_SHA_256):PSA_KEY_TYPE_HMAC:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_HMAC(PSA_ALG_SHA_256):PSA_SUCCESS +mac_key_policy:PSA_KEY_USAGE_VERIFY_HASH:PSA_ALG_HMAC(PSA_ALG_SHA_256):PSA_KEY_TYPE_HMAC:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_HMAC(PSA_ALG_SHA_256):PSA_ERROR_NOT_PERMITTED:PSA_SUCCESS PSA key policy: MAC, SIGN+VERIFY_HASH -> {SIGN,VERIFY}_{HASH,MESSAGE} depends_on:PSA_WANT_ALG_HMAC:PSA_WANT_ALG_SHA_256:PSA_WANT_KEY_TYPE_HMAC -mac_key_policy:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH:PSA_ALG_HMAC(PSA_ALG_SHA_256):PSA_KEY_TYPE_HMAC:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_HMAC(PSA_ALG_SHA_256):PSA_SUCCESS +mac_key_policy:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH:PSA_ALG_HMAC(PSA_ALG_SHA_256):PSA_KEY_TYPE_HMAC:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_HMAC(PSA_ALG_SHA_256):PSA_SUCCESS:PSA_SUCCESS PSA key policy: MAC, {SIGN,VERIFY}_{HASH,MESSAGE} depends_on:PSA_WANT_ALG_HMAC:PSA_WANT_ALG_SHA_256:PSA_WANT_KEY_TYPE_HMAC -mac_key_policy:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH | PSA_KEY_USAGE_SIGN_MESSAGE | PSA_KEY_USAGE_VERIFY_MESSAGE:PSA_ALG_HMAC(PSA_ALG_SHA_256):PSA_KEY_TYPE_HMAC:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_HMAC(PSA_ALG_SHA_256):PSA_SUCCESS +mac_key_policy:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH | PSA_KEY_USAGE_SIGN_MESSAGE | PSA_KEY_USAGE_VERIFY_MESSAGE:PSA_ALG_HMAC(PSA_ALG_SHA_256):PSA_KEY_TYPE_HMAC:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_HMAC(PSA_ALG_SHA_256):PSA_SUCCESS:PSA_SUCCESS PSA key policy: MAC, SIGN_MESSAGE depends_on:PSA_WANT_ALG_HMAC:PSA_WANT_ALG_SHA_256:PSA_WANT_KEY_TYPE_HMAC -mac_key_policy:PSA_KEY_USAGE_SIGN_MESSAGE:PSA_ALG_HMAC(PSA_ALG_SHA_256):PSA_KEY_TYPE_HMAC:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_HMAC(PSA_ALG_SHA_256):PSA_SUCCESS +mac_key_policy:PSA_KEY_USAGE_SIGN_MESSAGE:PSA_ALG_HMAC(PSA_ALG_SHA_256):PSA_KEY_TYPE_HMAC:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_HMAC(PSA_ALG_SHA_256):PSA_SUCCESS:PSA_ERROR_NOT_PERMITTED PSA key policy: MAC, VERIFY_MESSAGE depends_on:PSA_WANT_ALG_HMAC:PSA_WANT_ALG_SHA_256:PSA_WANT_KEY_TYPE_HMAC -mac_key_policy:PSA_KEY_USAGE_VERIFY_MESSAGE:PSA_ALG_HMAC(PSA_ALG_SHA_256):PSA_KEY_TYPE_HMAC:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_HMAC(PSA_ALG_SHA_256):PSA_SUCCESS +mac_key_policy:PSA_KEY_USAGE_VERIFY_MESSAGE:PSA_ALG_HMAC(PSA_ALG_SHA_256):PSA_KEY_TYPE_HMAC:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_HMAC(PSA_ALG_SHA_256):PSA_ERROR_NOT_PERMITTED:PSA_SUCCESS PSA key policy: MAC, SIGN+VERIFY_MESSAGE depends_on:PSA_WANT_ALG_HMAC:PSA_WANT_ALG_SHA_256:PSA_WANT_KEY_TYPE_HMAC -mac_key_policy:PSA_KEY_USAGE_SIGN_MESSAGE | PSA_KEY_USAGE_VERIFY_MESSAGE:PSA_ALG_HMAC(PSA_ALG_SHA_256):PSA_KEY_TYPE_HMAC:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_HMAC(PSA_ALG_SHA_256):PSA_SUCCESS +mac_key_policy:PSA_KEY_USAGE_SIGN_MESSAGE | PSA_KEY_USAGE_VERIFY_MESSAGE:PSA_ALG_HMAC(PSA_ALG_SHA_256):PSA_KEY_TYPE_HMAC:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_HMAC(PSA_ALG_SHA_256):PSA_SUCCESS:PSA_SUCCESS PSA key policy: MAC, neither sign nor verify depends_on:PSA_WANT_ALG_HMAC:PSA_WANT_ALG_SHA_256:PSA_WANT_KEY_TYPE_HMAC -mac_key_policy:0:PSA_ALG_HMAC(PSA_ALG_SHA_256):PSA_KEY_TYPE_HMAC:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_HMAC(PSA_ALG_SHA_256):PSA_ERROR_NOT_PERMITTED +mac_key_policy:0:PSA_ALG_HMAC(PSA_ALG_SHA_256):PSA_KEY_TYPE_HMAC:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_HMAC(PSA_ALG_SHA_256):PSA_ERROR_NOT_PERMITTED:PSA_ERROR_NOT_PERMITTED PSA key policy: MAC, wrong algorithm depends_on:PSA_WANT_ALG_HMAC:PSA_WANT_ALG_SHA_224:PSA_WANT_ALG_SHA_256:PSA_WANT_KEY_TYPE_HMAC -mac_key_policy:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH | PSA_KEY_USAGE_SIGN_MESSAGE | PSA_KEY_USAGE_VERIFY_MESSAGE:PSA_ALG_HMAC(PSA_ALG_SHA_256):PSA_KEY_TYPE_HMAC:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_HMAC(PSA_ALG_SHA_224):PSA_ERROR_NOT_PERMITTED +mac_key_policy:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH | PSA_KEY_USAGE_SIGN_MESSAGE | PSA_KEY_USAGE_VERIFY_MESSAGE:PSA_ALG_HMAC(PSA_ALG_SHA_256):PSA_KEY_TYPE_HMAC:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_HMAC(PSA_ALG_SHA_224):PSA_ERROR_NOT_PERMITTED:PSA_ERROR_NOT_PERMITTED PSA key policy: MAC, alg=0 in policy depends_on:PSA_WANT_ALG_HMAC:PSA_WANT_ALG_SHA_256:PSA_WANT_KEY_TYPE_HMAC -mac_key_policy:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH | PSA_KEY_USAGE_SIGN_MESSAGE | PSA_KEY_USAGE_VERIFY_MESSAGE:0:PSA_KEY_TYPE_HMAC:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_HMAC(PSA_ALG_SHA_256):PSA_ERROR_NOT_PERMITTED +mac_key_policy:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH | PSA_KEY_USAGE_SIGN_MESSAGE | PSA_KEY_USAGE_VERIFY_MESSAGE:0:PSA_KEY_TYPE_HMAC:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_HMAC(PSA_ALG_SHA_256):PSA_ERROR_NOT_PERMITTED:PSA_ERROR_NOT_PERMITTED PSA key policy: MAC, ANY_HASH in policy is not meaningful depends_on:PSA_WANT_ALG_HMAC:PSA_WANT_ALG_SHA_256:PSA_WANT_KEY_TYPE_HMAC -mac_key_policy:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH | PSA_KEY_USAGE_SIGN_MESSAGE | PSA_KEY_USAGE_VERIFY_MESSAGE:PSA_ALG_HMAC(PSA_ALG_ANY_HASH):PSA_KEY_TYPE_HMAC:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_HMAC(PSA_ALG_SHA_256):PSA_ERROR_NOT_PERMITTED +mac_key_policy:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH | PSA_KEY_USAGE_SIGN_MESSAGE | PSA_KEY_USAGE_VERIFY_MESSAGE:PSA_ALG_HMAC(PSA_ALG_ANY_HASH):PSA_KEY_TYPE_HMAC:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_HMAC(PSA_ALG_SHA_256):PSA_ERROR_NOT_PERMITTED:PSA_ERROR_NOT_PERMITTED PSA key policy: HMAC, sign-verify, tag length > min-length policy depends_on:PSA_WANT_ALG_HMAC:PSA_WANT_ALG_SHA_256:PSA_WANT_KEY_TYPE_HMAC -mac_key_policy:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH | PSA_KEY_USAGE_SIGN_MESSAGE | PSA_KEY_USAGE_VERIFY_MESSAGE:PSA_ALG_AT_LEAST_THIS_LENGTH_MAC(PSA_ALG_HMAC(PSA_ALG_SHA_256), 20):PSA_KEY_TYPE_HMAC:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_TRUNCATED_MAC(PSA_ALG_HMAC(PSA_ALG_SHA_256), 30):PSA_SUCCESS +mac_key_policy:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH | PSA_KEY_USAGE_SIGN_MESSAGE | PSA_KEY_USAGE_VERIFY_MESSAGE:PSA_ALG_AT_LEAST_THIS_LENGTH_MAC(PSA_ALG_HMAC(PSA_ALG_SHA_256), 20):PSA_KEY_TYPE_HMAC:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_TRUNCATED_MAC(PSA_ALG_HMAC(PSA_ALG_SHA_256), 30):PSA_SUCCESS:PSA_SUCCESS PSA key policy: HMAC, sign-verify, tag length = min-length policy depends_on:PSA_WANT_ALG_HMAC:PSA_WANT_ALG_SHA_256:PSA_WANT_KEY_TYPE_HMAC -mac_key_policy:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH | PSA_KEY_USAGE_SIGN_MESSAGE | PSA_KEY_USAGE_VERIFY_MESSAGE:PSA_ALG_AT_LEAST_THIS_LENGTH_MAC(PSA_ALG_HMAC(PSA_ALG_SHA_256), 20):PSA_KEY_TYPE_HMAC:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_TRUNCATED_MAC(PSA_ALG_HMAC(PSA_ALG_SHA_256), 20):PSA_SUCCESS +mac_key_policy:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH | PSA_KEY_USAGE_SIGN_MESSAGE | PSA_KEY_USAGE_VERIFY_MESSAGE:PSA_ALG_AT_LEAST_THIS_LENGTH_MAC(PSA_ALG_HMAC(PSA_ALG_SHA_256), 20):PSA_KEY_TYPE_HMAC:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_TRUNCATED_MAC(PSA_ALG_HMAC(PSA_ALG_SHA_256), 20):PSA_SUCCESS:PSA_SUCCESS PSA key policy: HMAC, sign-verify, tag length < min-length policy depends_on:PSA_WANT_ALG_HMAC:PSA_WANT_ALG_SHA_256:PSA_WANT_KEY_TYPE_HMAC -mac_key_policy:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH | PSA_KEY_USAGE_SIGN_MESSAGE | PSA_KEY_USAGE_VERIFY_MESSAGE:PSA_ALG_AT_LEAST_THIS_LENGTH_MAC(PSA_ALG_HMAC(PSA_ALG_SHA_256), 20):PSA_KEY_TYPE_HMAC:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_TRUNCATED_MAC(PSA_ALG_HMAC(PSA_ALG_SHA_256), 10):PSA_ERROR_NOT_PERMITTED +mac_key_policy:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH | PSA_KEY_USAGE_SIGN_MESSAGE | PSA_KEY_USAGE_VERIFY_MESSAGE:PSA_ALG_AT_LEAST_THIS_LENGTH_MAC(PSA_ALG_HMAC(PSA_ALG_SHA_256), 20):PSA_KEY_TYPE_HMAC:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_TRUNCATED_MAC(PSA_ALG_HMAC(PSA_ALG_SHA_256), 10):PSA_ERROR_NOT_PERMITTED:PSA_ERROR_NOT_PERMITTED PSA key policy: CMAC, sign-verify, tag length > min-length policy depends_on:PSA_WANT_ALG_CMAC:PSA_WANT_KEY_TYPE_AES -mac_key_policy:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH | PSA_KEY_USAGE_SIGN_MESSAGE | PSA_KEY_USAGE_VERIFY_MESSAGE:PSA_ALG_AT_LEAST_THIS_LENGTH_MAC(PSA_ALG_CMAC, 10):PSA_KEY_TYPE_AES:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_TRUNCATED_MAC(PSA_ALG_CMAC, 16):PSA_SUCCESS +mac_key_policy:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH | PSA_KEY_USAGE_SIGN_MESSAGE | PSA_KEY_USAGE_VERIFY_MESSAGE:PSA_ALG_AT_LEAST_THIS_LENGTH_MAC(PSA_ALG_CMAC, 10):PSA_KEY_TYPE_AES:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_TRUNCATED_MAC(PSA_ALG_CMAC, 16):PSA_SUCCESS:PSA_SUCCESS PSA key policy: CMAC, sign-verify, tag length = min-length policy depends_on:PSA_WANT_ALG_CMAC:PSA_WANT_KEY_TYPE_AES -mac_key_policy:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH | PSA_KEY_USAGE_SIGN_MESSAGE | PSA_KEY_USAGE_VERIFY_MESSAGE:PSA_ALG_AT_LEAST_THIS_LENGTH_MAC(PSA_ALG_CMAC, 10):PSA_KEY_TYPE_AES:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_TRUNCATED_MAC(PSA_ALG_CMAC, 10):PSA_SUCCESS +mac_key_policy:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH | PSA_KEY_USAGE_SIGN_MESSAGE | PSA_KEY_USAGE_VERIFY_MESSAGE:PSA_ALG_AT_LEAST_THIS_LENGTH_MAC(PSA_ALG_CMAC, 10):PSA_KEY_TYPE_AES:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_TRUNCATED_MAC(PSA_ALG_CMAC, 10):PSA_SUCCESS:PSA_SUCCESS PSA key policy: CMAC, sign-verify, tag length < min-length policy depends_on:PSA_WANT_ALG_CMAC:PSA_WANT_KEY_TYPE_AES -mac_key_policy:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH | PSA_KEY_USAGE_SIGN_MESSAGE | PSA_KEY_USAGE_VERIFY_MESSAGE:PSA_ALG_AT_LEAST_THIS_LENGTH_MAC(PSA_ALG_CMAC, 10):PSA_KEY_TYPE_AES:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_TRUNCATED_MAC(PSA_ALG_CMAC, 8):PSA_ERROR_NOT_PERMITTED +mac_key_policy:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH | PSA_KEY_USAGE_SIGN_MESSAGE | PSA_KEY_USAGE_VERIFY_MESSAGE:PSA_ALG_AT_LEAST_THIS_LENGTH_MAC(PSA_ALG_CMAC, 10):PSA_KEY_TYPE_AES:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_TRUNCATED_MAC(PSA_ALG_CMAC, 8):PSA_ERROR_NOT_PERMITTED:PSA_ERROR_NOT_PERMITTED PSA key policy: HMAC, sign-verify, default tag length > min-length policy depends_on:PSA_WANT_ALG_HMAC:PSA_WANT_ALG_SHA_256:PSA_WANT_KEY_TYPE_HMAC -mac_key_policy:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH | PSA_KEY_USAGE_SIGN_MESSAGE | PSA_KEY_USAGE_VERIFY_MESSAGE:PSA_ALG_AT_LEAST_THIS_LENGTH_MAC(PSA_ALG_HMAC(PSA_ALG_SHA_256), 31):PSA_KEY_TYPE_HMAC:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_HMAC(PSA_ALG_SHA_256):PSA_SUCCESS +mac_key_policy:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH | PSA_KEY_USAGE_SIGN_MESSAGE | PSA_KEY_USAGE_VERIFY_MESSAGE:PSA_ALG_AT_LEAST_THIS_LENGTH_MAC(PSA_ALG_HMAC(PSA_ALG_SHA_256), 31):PSA_KEY_TYPE_HMAC:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_HMAC(PSA_ALG_SHA_256):PSA_SUCCESS:PSA_SUCCESS PSA key policy: HMAC, sign-verify, default tag length = min-length policy depends_on:PSA_WANT_ALG_HMAC:PSA_WANT_ALG_SHA_256:PSA_WANT_KEY_TYPE_HMAC -mac_key_policy:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH | PSA_KEY_USAGE_SIGN_MESSAGE | PSA_KEY_USAGE_VERIFY_MESSAGE:PSA_ALG_AT_LEAST_THIS_LENGTH_MAC(PSA_ALG_HMAC(PSA_ALG_SHA_256), 32):PSA_KEY_TYPE_HMAC:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_HMAC(PSA_ALG_SHA_256):PSA_SUCCESS +mac_key_policy:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH | PSA_KEY_USAGE_SIGN_MESSAGE | PSA_KEY_USAGE_VERIFY_MESSAGE:PSA_ALG_AT_LEAST_THIS_LENGTH_MAC(PSA_ALG_HMAC(PSA_ALG_SHA_256), 32):PSA_KEY_TYPE_HMAC:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_HMAC(PSA_ALG_SHA_256):PSA_SUCCESS:PSA_SUCCESS PSA key policy: HMAC, sign-verify, default tag length < min-length policy depends_on:PSA_WANT_ALG_HMAC:PSA_WANT_ALG_SHA_256:PSA_WANT_KEY_TYPE_HMAC -mac_key_policy:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH | PSA_KEY_USAGE_SIGN_MESSAGE | PSA_KEY_USAGE_VERIFY_MESSAGE:PSA_ALG_AT_LEAST_THIS_LENGTH_MAC(PSA_ALG_HMAC(PSA_ALG_SHA_256), 33):PSA_KEY_TYPE_HMAC:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_HMAC(PSA_ALG_SHA_256):PSA_ERROR_NOT_PERMITTED +mac_key_policy:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH | PSA_KEY_USAGE_SIGN_MESSAGE | PSA_KEY_USAGE_VERIFY_MESSAGE:PSA_ALG_AT_LEAST_THIS_LENGTH_MAC(PSA_ALG_HMAC(PSA_ALG_SHA_256), 33):PSA_KEY_TYPE_HMAC:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_HMAC(PSA_ALG_SHA_256):PSA_ERROR_NOT_PERMITTED:PSA_ERROR_NOT_PERMITTED PSA key policy: HMAC, sign-verify, min-length policy, unmatched base alg depends_on:PSA_WANT_ALG_CMAC:PSA_WANT_ALG_HMAC:PSA_WANT_ALG_SHA_256:PSA_WANT_KEY_TYPE_HMAC -mac_key_policy:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH | PSA_KEY_USAGE_SIGN_MESSAGE | PSA_KEY_USAGE_VERIFY_MESSAGE:PSA_ALG_AT_LEAST_THIS_LENGTH_MAC(PSA_ALG_HMAC(PSA_ALG_SHA_256), 20):PSA_KEY_TYPE_HMAC:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_TRUNCATED_MAC(PSA_ALG_CMAC, 20):PSA_ERROR_NOT_PERMITTED +mac_key_policy:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH | PSA_KEY_USAGE_SIGN_MESSAGE | PSA_KEY_USAGE_VERIFY_MESSAGE:PSA_ALG_AT_LEAST_THIS_LENGTH_MAC(PSA_ALG_HMAC(PSA_ALG_SHA_256), 20):PSA_KEY_TYPE_HMAC:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_TRUNCATED_MAC(PSA_ALG_CMAC, 20):PSA_ERROR_NOT_PERMITTED:PSA_ERROR_NOT_PERMITTED PSA key policy: HMAC, sign-verify, min-length policy, unmatched base alg (different hash base) depends_on:PSA_WANT_ALG_HMAC:PSA_WANT_ALG_SHA_224:PSA_WANT_ALG_SHA_256:PSA_WANT_KEY_TYPE_HMAC -mac_key_policy:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH | PSA_KEY_USAGE_SIGN_MESSAGE | PSA_KEY_USAGE_VERIFY_MESSAGE:PSA_ALG_AT_LEAST_THIS_LENGTH_MAC(PSA_ALG_HMAC(PSA_ALG_SHA_256), 20):PSA_KEY_TYPE_HMAC:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_TRUNCATED_MAC(PSA_ALG_HMAC(PSA_ALG_SHA_224), 20):PSA_ERROR_NOT_PERMITTED +mac_key_policy:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH | PSA_KEY_USAGE_SIGN_MESSAGE | PSA_KEY_USAGE_VERIFY_MESSAGE:PSA_ALG_AT_LEAST_THIS_LENGTH_MAC(PSA_ALG_HMAC(PSA_ALG_SHA_256), 20):PSA_KEY_TYPE_HMAC:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_TRUNCATED_MAC(PSA_ALG_HMAC(PSA_ALG_SHA_224), 20):PSA_ERROR_NOT_PERMITTED:PSA_ERROR_NOT_PERMITTED PSA key policy: HMAC, sign-verify, min-length policy, unmatched base alg (different algorithm) depends_on:PSA_WANT_ALG_CMAC:PSA_WANT_ALG_HMAC:PSA_WANT_ALG_SHA_256:PSA_WANT_KEY_TYPE_HMAC -mac_key_policy:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH | PSA_KEY_USAGE_SIGN_MESSAGE | PSA_KEY_USAGE_VERIFY_MESSAGE:PSA_ALG_AT_LEAST_THIS_LENGTH_MAC(PSA_ALG_HMAC(PSA_ALG_SHA_256), 10):PSA_KEY_TYPE_HMAC:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_CMAC:PSA_ERROR_NOT_PERMITTED +mac_key_policy:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH | PSA_KEY_USAGE_SIGN_MESSAGE | PSA_KEY_USAGE_VERIFY_MESSAGE:PSA_ALG_AT_LEAST_THIS_LENGTH_MAC(PSA_ALG_HMAC(PSA_ALG_SHA_256), 10):PSA_KEY_TYPE_HMAC:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_CMAC:PSA_ERROR_NOT_PERMITTED:PSA_ERROR_NOT_PERMITTED PSA key policy: HMAC, sign-verify, min-length policy used as algorithm depends_on:PSA_WANT_ALG_HMAC:PSA_WANT_ALG_SHA_256:PSA_WANT_KEY_TYPE_HMAC -mac_key_policy:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH | PSA_KEY_USAGE_SIGN_MESSAGE | PSA_KEY_USAGE_VERIFY_MESSAGE:PSA_ALG_AT_LEAST_THIS_LENGTH_MAC(PSA_ALG_HMAC(PSA_ALG_SHA_256), 20):PSA_KEY_TYPE_HMAC:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_AT_LEAST_THIS_LENGTH_MAC(PSA_ALG_HMAC(PSA_ALG_SHA_256), 20):PSA_ERROR_INVALID_ARGUMENT +mac_key_policy:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH | PSA_KEY_USAGE_SIGN_MESSAGE | PSA_KEY_USAGE_VERIFY_MESSAGE:PSA_ALG_AT_LEAST_THIS_LENGTH_MAC(PSA_ALG_HMAC(PSA_ALG_SHA_256), 20):PSA_KEY_TYPE_HMAC:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_AT_LEAST_THIS_LENGTH_MAC(PSA_ALG_HMAC(PSA_ALG_SHA_256), 20):PSA_ERROR_INVALID_ARGUMENT:PSA_ERROR_INVALID_ARGUMENT PSA key policy: HMAC, sign-verify, tag length > exact-length policy depends_on:PSA_WANT_ALG_HMAC:PSA_WANT_ALG_SHA_256:PSA_WANT_KEY_TYPE_HMAC -mac_key_policy:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH | PSA_KEY_USAGE_SIGN_MESSAGE | PSA_KEY_USAGE_VERIFY_MESSAGE:PSA_ALG_TRUNCATED_MAC(PSA_ALG_HMAC(PSA_ALG_SHA_256), 10):PSA_KEY_TYPE_HMAC:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_TRUNCATED_MAC(PSA_ALG_HMAC(PSA_ALG_SHA_256), 20):PSA_ERROR_NOT_PERMITTED +mac_key_policy:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH | PSA_KEY_USAGE_SIGN_MESSAGE | PSA_KEY_USAGE_VERIFY_MESSAGE:PSA_ALG_TRUNCATED_MAC(PSA_ALG_HMAC(PSA_ALG_SHA_256), 10):PSA_KEY_TYPE_HMAC:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_TRUNCATED_MAC(PSA_ALG_HMAC(PSA_ALG_SHA_256), 20):PSA_ERROR_NOT_PERMITTED:PSA_ERROR_NOT_PERMITTED PSA key policy: HMAC, sign-verify, tag length = exact-length policy depends_on:PSA_WANT_ALG_HMAC:PSA_WANT_ALG_SHA_256:PSA_WANT_KEY_TYPE_HMAC -mac_key_policy:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH | PSA_KEY_USAGE_SIGN_MESSAGE | PSA_KEY_USAGE_VERIFY_MESSAGE:PSA_ALG_TRUNCATED_MAC(PSA_ALG_HMAC(PSA_ALG_SHA_256), 20):PSA_KEY_TYPE_HMAC:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_TRUNCATED_MAC(PSA_ALG_HMAC(PSA_ALG_SHA_256), 20):PSA_SUCCESS +mac_key_policy:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH | PSA_KEY_USAGE_SIGN_MESSAGE | PSA_KEY_USAGE_VERIFY_MESSAGE:PSA_ALG_TRUNCATED_MAC(PSA_ALG_HMAC(PSA_ALG_SHA_256), 20):PSA_KEY_TYPE_HMAC:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_TRUNCATED_MAC(PSA_ALG_HMAC(PSA_ALG_SHA_256), 20):PSA_SUCCESS:PSA_SUCCESS PSA key policy: HMAC, sign-verify, tag length < exact-length policy depends_on:PSA_WANT_ALG_HMAC:PSA_WANT_ALG_SHA_256:PSA_WANT_KEY_TYPE_HMAC -mac_key_policy:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH | PSA_KEY_USAGE_SIGN_MESSAGE | PSA_KEY_USAGE_VERIFY_MESSAGE:PSA_ALG_TRUNCATED_MAC(PSA_ALG_HMAC(PSA_ALG_SHA_256), 20):PSA_KEY_TYPE_HMAC:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_TRUNCATED_MAC(PSA_ALG_HMAC(PSA_ALG_SHA_256), 10):PSA_ERROR_NOT_PERMITTED +mac_key_policy:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH | PSA_KEY_USAGE_SIGN_MESSAGE | PSA_KEY_USAGE_VERIFY_MESSAGE:PSA_ALG_TRUNCATED_MAC(PSA_ALG_HMAC(PSA_ALG_SHA_256), 20):PSA_KEY_TYPE_HMAC:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_TRUNCATED_MAC(PSA_ALG_HMAC(PSA_ALG_SHA_256), 10):PSA_ERROR_NOT_PERMITTED:PSA_ERROR_NOT_PERMITTED PSA key policy: cipher, encrypt | decrypt depends_on:PSA_WANT_ALG_CTR:PSA_WANT_KEY_TYPE_AES diff --git a/tests/suites/test_suite_psa_crypto.function b/tests/suites/test_suite_psa_crypto.function index 3fe512e8e7..cde28a8e75 100644 --- a/tests/suites/test_suite_psa_crypto.function +++ b/tests/suites/test_suite_psa_crypto.function @@ -792,7 +792,8 @@ void mac_key_policy( int policy_usage_arg, int key_type_arg, data_t *key_data, int exercise_alg_arg, - int expected_status_arg ) + int expected_status_sign_arg, + int expected_status_verify_arg ) { mbedtls_svc_key_id_t key = MBEDTLS_SVC_KEY_ID_INIT; psa_key_attributes_t attributes = PSA_KEY_ATTRIBUTES_INIT; @@ -802,7 +803,8 @@ void mac_key_policy( int policy_usage_arg, psa_algorithm_t exercise_alg = exercise_alg_arg; psa_key_usage_t policy_usage = policy_usage_arg; psa_status_t status; - psa_status_t expected_status = expected_status_arg; + psa_status_t expected_status_sign = expected_status_sign_arg; + psa_status_t expected_status_verify = expected_status_verify_arg; unsigned char mac[PSA_MAC_MAX_SIZE]; PSA_ASSERT( psa_crypto_init( ) ); @@ -818,19 +820,13 @@ void mac_key_policy( int policy_usage_arg, mbedtls_test_update_key_usage_flags( policy_usage ) ); status = psa_mac_sign_setup( &operation, key, exercise_alg ); - if( ( mbedtls_test_update_key_usage_flags(policy_usage) & PSA_KEY_USAGE_SIGN_MESSAGE ) == 0 ) - TEST_EQUAL( status, PSA_ERROR_NOT_PERMITTED ); - else - TEST_EQUAL( status, expected_status ); + TEST_EQUAL( status, expected_status_sign ); psa_mac_abort( &operation ); memset( mac, 0, sizeof( mac ) ); status = psa_mac_verify_setup( &operation, key, exercise_alg ); - if( ( mbedtls_test_update_key_usage_flags(policy_usage) & PSA_KEY_USAGE_VERIFY_MESSAGE ) == 0 ) - TEST_EQUAL( status, PSA_ERROR_NOT_PERMITTED ); - else - TEST_EQUAL( status, expected_status ); + TEST_EQUAL( status, expected_status_verify ); exit: psa_mac_abort( &operation ); From 1ebcd55aface9312859044d43f3b3ae6decc59fa Mon Sep 17 00:00:00 2001 From: Mateusz Starzyk Date: Mon, 30 Aug 2021 17:09:03 +0200 Subject: [PATCH 4/4] Extend mac_key_policy test. Add checks for psa_mac_compute and psa_mac_verify. Signed-off-by: Mateusz Starzyk --- tests/suites/test_suite_psa_crypto.function | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/tests/suites/test_suite_psa_crypto.function b/tests/suites/test_suite_psa_crypto.function index cde28a8e75..8df2ceafef 100644 --- a/tests/suites/test_suite_psa_crypto.function +++ b/tests/suites/test_suite_psa_crypto.function @@ -822,6 +822,23 @@ void mac_key_policy( int policy_usage_arg, status = psa_mac_sign_setup( &operation, key, exercise_alg ); TEST_EQUAL( status, expected_status_sign ); + /* Calculate the MAC, one-shot case. */ + uint8_t input[128] = {0}; + size_t mac_len; + TEST_EQUAL( psa_mac_compute( key, exercise_alg, + input, 128, + mac, PSA_MAC_MAX_SIZE, &mac_len ), + expected_status_sign ); + + /* Verify correct MAC, one-shot case. */ + status = psa_mac_verify( key, exercise_alg, input, 128, + mac, mac_len ); + + if( expected_status_sign != PSA_SUCCESS && expected_status_verify == PSA_SUCCESS ) + TEST_EQUAL( status, PSA_ERROR_INVALID_SIGNATURE ); + else + TEST_EQUAL( status, expected_status_verify ); + psa_mac_abort( &operation ); memset( mac, 0, sizeof( mac ) );