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Using a wildcard as a specific algorithm now reports invalid argument

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Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>
This commit is contained in:
Steven Cooreman 2021-02-23 14:18:32 +01:00
parent ae3f13bf5e
commit 7e39f05929
2 changed files with 27 additions and 15 deletions
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32
library/psa_crypto.c
View file

@ -744,9 +744,6 @@ static psa_algorithm_t psa_key_policy_algorithm_intersection(
static int psa_key_algorithm_permits( psa_algorithm_t policy_alg,
psa_algorithm_t requested_alg )
{
/* A requested algorithm cannot be a wildcard. */
if( PSA_ALG_IS_WILDCARD( requested_alg ) )
return( 0 );
/* Common case: the policy only allows requested_alg. */
if( requested_alg == policy_alg )
return( 1 );
@ -804,12 +801,25 @@ static int psa_key_algorithm_permits( psa_algorithm_t policy_alg,
/** Test whether a policy permits an algorithm.
*
* The caller must test usage flags separately.
*
* \retval PSA_SUCCESS When \p alg is a specific algorithm
* allowed by the \p policy.
* \retval PSA_ERROR_INVALID_ARGUMENT When \p alg is not a specific algorithm
* \retval PSA_ERROR_NOT_PERMITTED When \p alg is a specific algorithm, but
* the \p policy does not allow it.
*/
static int psa_key_policy_permits( const psa_key_policy_t *policy,
psa_algorithm_t alg )
static psa_status_t psa_key_policy_permits( const psa_key_policy_t *policy,
psa_algorithm_t alg )
{
return( psa_key_algorithm_permits( policy->alg, alg ) ||
psa_key_algorithm_permits( policy->alg2, alg ) );
/* A requested algorithm cannot be a wildcard. */
if( PSA_ALG_IS_WILDCARD( alg ) )
return( PSA_ERROR_INVALID_ARGUMENT );
if( psa_key_algorithm_permits( policy->alg, alg ) ||
psa_key_algorithm_permits( policy->alg2, alg ) )
return( PSA_SUCCESS );
else
return( PSA_ERROR_NOT_PERMITTED );
}
/** Restrict a key policy based on a constraint.
@ -880,8 +890,12 @@ static psa_status_t psa_get_and_lock_key_slot_with_policy(
goto error;
/* Enforce that the usage policy permits the requested algortihm. */
if( alg != 0 && ! psa_key_policy_permits( &slot->attr.policy, alg ) )
goto error;
if( alg != 0 )
{
status = psa_key_policy_permits( &slot->attr.policy, alg );
if( status != PSA_SUCCESS )
goto error;
}
return( PSA_SUCCESS );

10
tests/suites/test_suite_psa_crypto.data
View file

@ -454,7 +454,7 @@ mac_key_policy:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH:PSA_ALG_AT_LE
PSA key policy: MAC, 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_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_NOT_PERMITTED
mac_key_policy:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH: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 key policy: MAC, sign-verify, tag length > exact-length policy
depends_on:PSA_WANT_ALG_HMAC:PSA_WANT_ALG_SHA_256:PSA_WANT_KEY_TYPE_HMAC
@ -558,7 +558,7 @@ aead_key_policy:PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_DECRYPT:PSA_ALG_AEAD_WITH_
PSA key policy: AEAD, min-length policy used as algorithm
depends_on:MBEDTLS_AES_C:MBEDTLS_CCM_C
aead_key_policy:PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_DECRYPT:PSA_ALG_AEAD_WITH_AT_LEAST_THIS_LENGTH_TAG(PSA_ALG_CCM, 8):PSA_KEY_TYPE_AES:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":13:8:PSA_ALG_AEAD_WITH_AT_LEAST_THIS_LENGTH_TAG(PSA_ALG_CCM, 8):PSA_ERROR_NOT_PERMITTED
aead_key_policy:PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_DECRYPT:PSA_ALG_AEAD_WITH_AT_LEAST_THIS_LENGTH_TAG(PSA_ALG_CCM, 8):PSA_KEY_TYPE_AES:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":13:8:PSA_ALG_AEAD_WITH_AT_LEAST_THIS_LENGTH_TAG(PSA_ALG_CCM, 8):PSA_ERROR_INVALID_ARGUMENT
PSA key policy: AEAD, tag length > exact-length policy
depends_on:MBEDTLS_AES_C:MBEDTLS_CCM_C
@ -2118,9 +2118,7 @@ sign_fail:PSA_KEY_TYPE_RSA_KEY_PAIR:"3082025e02010002818100af057d396ee84fb75fdbb
PSA sign: RSA PKCS#1 v1.5, invalid hash (wildcard)
depends_on:MBEDTLS_PK_PARSE_C:MBEDTLS_RSA_C:MBEDTLS_MD_C:MBEDTLS_PKCS1_V15
# Arguably the error should be INVALID_ARGUMENT, but NOT_SUPPORTED is simpler
# to implement.
sign_fail:PSA_KEY_TYPE_RSA_KEY_PAIR:"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":PSA_ALG_RSA_PKCS1V15_SIGN(PSA_ALG_ANY_HASH):"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":128:PSA_ERROR_NOT_PERMITTED
sign_fail:PSA_KEY_TYPE_RSA_KEY_PAIR:"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":PSA_ALG_RSA_PKCS1V15_SIGN(PSA_ALG_ANY_HASH):"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":128:PSA_ERROR_INVALID_ARGUMENT
PSA sign: RSA PKCS#1 v1.5 raw, input too large
depends_on:PSA_WANT_ALG_RSA_PKCS1V15_SIGN:PSA_WANT_KEY_TYPE_RSA_KEY_PAIR:MBEDTLS_PK_PARSE_C:MBEDTLS_MD_C
@ -2148,7 +2146,7 @@ sign_fail:PSA_KEY_TYPE_ECC_KEY_PAIR(PSA_ECC_FAMILY_SECP_R1):"ab45435712649cb30bb
PSA sign: deterministic ECDSA SECP256R1, invalid hash algorithm (wildcard)
depends_on:PSA_WANT_ALG_DETERMINISTIC_ECDSA:PSA_WANT_KEY_TYPE_ECC_KEY_PAIR:MBEDTLS_PK_PARSE_C:MBEDTLS_ECP_DP_SECP256R1_ENABLED:MBEDTLS_MD_C
sign_fail:PSA_KEY_TYPE_ECC_KEY_PAIR(PSA_ECC_FAMILY_SECP_R1):"ab45435712649cb30bbddac49197eebf2740ffc7f874d9244c3460f54f322d3a":PSA_ALG_DETERMINISTIC_ECDSA( PSA_ALG_ANY_HASH ):"9ac4335b469bbd791439248504dd0d49c71349a295fee5a1c68507f45a9e1c7b":72:PSA_ERROR_NOT_PERMITTED
sign_fail:PSA_KEY_TYPE_ECC_KEY_PAIR(PSA_ECC_FAMILY_SECP_R1):"ab45435712649cb30bbddac49197eebf2740ffc7f874d9244c3460f54f322d3a":PSA_ALG_DETERMINISTIC_ECDSA( PSA_ALG_ANY_HASH ):"9ac4335b469bbd791439248504dd0d49c71349a295fee5a1c68507f45a9e1c7b":72:PSA_ERROR_INVALID_ARGUMENT
PSA sign: invalid key type, signing with a public key
depends_on:PSA_WANT_ALG_RSA_PKCS1V15_SIGN:PSA_WANT_KEY_TYPE_RSA_PUBLIC_KEY:MBEDTLS_PK_PARSE_C