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Add support for key policies in addition to specific algorithms

Browse source 
Initially contributed: minimum-tag-length AEAD and MAC policies.
Includes tests.

Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>
This commit is contained in:
Steven Cooreman 2021-01-26 17:26:28 +01:00
parent a51e1dbe76
commit 95370ba50d
6 changed files with 226 additions and 40 deletions
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5
ChangeLog.d/psa-crypto-key-policies.txt Normal file
View file

@ -0,0 +1,5 @@
Features
* A key in PSA Crypto can now be defined with a policy instead of a specific
algorithm. Policies describe a collection of allowed specific algorithms.
Initial policies are PSA_ALG_AEAD_POLICY_WITH_MINIMUM_TAG_LENGTH and
PSA_ALG_MAC_POLICY_WITH_MINIMUM_TAG_LENGTH.

2
include/psa/crypto.h
View file

@ -260,6 +260,8 @@ static psa_key_usage_t psa_get_key_usage_flags(
* - An algorithm value permits this particular algorithm. * - An algorithm value permits this particular algorithm.
* - An algorithm wildcard built from #PSA_ALG_ANY_HASH allows the specified * - An algorithm wildcard built from #PSA_ALG_ANY_HASH allows the specified
* signature scheme with any hash algorithm. * signature scheme with any hash algorithm.
* - An algorithm with the #PSA_ALG_POLICY_FLAG bit set allows the
* algorithm collection specified by that algorithm policy definition.
* *
* This function overwrites any algorithm policy * This function overwrites any algorithm policy
* previously set in \p attributes. * previously set in \p attributes.

131
include/psa/crypto_values.h
View file

@ -608,7 +608,17 @@
*/ */
#define PSA_ALG_VENDOR_FLAG ((psa_algorithm_t)0x80000000) #define PSA_ALG_VENDOR_FLAG ((psa_algorithm_t)0x80000000)
#define PSA_ALG_CATEGORY_MASK ((psa_algorithm_t)0x7f000000) /** Policy-only flag.
*
* An algorithm defined by this standard can have the #PSA_ALG_POLICY_FLAG bit
* set to indicate the value can only be used in a usage policy definition.
* The use case is primarily defining key usage policies, where a policy can
* encompass more than one specific algorithm, e.g. AEAD or MAC algorithms
* with multiple tag lengths.
*/
#define PSA_ALG_POLICY_FLAG ((psa_algorithm_t)0x40000000)
#define PSA_ALG_CATEGORY_MASK ((psa_algorithm_t)0x3f000000)
#define PSA_ALG_CATEGORY_HASH ((psa_algorithm_t)0x02000000) #define PSA_ALG_CATEGORY_HASH ((psa_algorithm_t)0x02000000)
#define PSA_ALG_CATEGORY_MAC ((psa_algorithm_t)0x03000000) #define PSA_ALG_CATEGORY_MAC ((psa_algorithm_t)0x03000000)
#define PSA_ALG_CATEGORY_CIPHER ((psa_algorithm_t)0x04000000) #define PSA_ALG_CATEGORY_CIPHER ((psa_algorithm_t)0x04000000)
@ -625,6 +635,13 @@
#define PSA_ALG_IS_VENDOR_DEFINED(alg) \ #define PSA_ALG_IS_VENDOR_DEFINED(alg) \
(((alg) & PSA_ALG_VENDOR_FLAG) != 0) (((alg) & PSA_ALG_VENDOR_FLAG) != 0)
/** Whether an algorithm is a policy (collection of algorithms).
*
* See also #PSA_ALG_POLICY_FLAG.
*/
#define PSA_ALG_IS_POLICY(alg) \
(((alg) & PSA_ALG_POLICY_FLAG) != 0)
/** Whether the specified algorithm is a hash algorithm. /** Whether the specified algorithm is a hash algorithm.
* *
* \param alg An algorithm identifier (value of type #psa_algorithm_t). * \param alg An algorithm identifier (value of type #psa_algorithm_t).
@ -634,7 +651,8 @@
* algorithm identifier. * algorithm identifier.
*/ */
#define PSA_ALG_IS_HASH(alg) \ #define PSA_ALG_IS_HASH(alg) \
(((alg) & PSA_ALG_CATEGORY_MASK) == PSA_ALG_CATEGORY_HASH) ((((alg) & PSA_ALG_CATEGORY_MASK) == PSA_ALG_CATEGORY_HASH) && \
!PSA_ALG_IS_POLICY(alg))
/** Whether the specified algorithm is a MAC algorithm. /** Whether the specified algorithm is a MAC algorithm.
* *
@ -645,7 +663,23 @@
* algorithm identifier. * algorithm identifier.
*/ */
#define PSA_ALG_IS_MAC(alg) \ #define PSA_ALG_IS_MAC(alg) \
(((alg) & PSA_ALG_CATEGORY_MASK) == PSA_ALG_CATEGORY_MAC) ((((alg) & PSA_ALG_CATEGORY_MASK) == PSA_ALG_CATEGORY_MAC) && \
!PSA_ALG_IS_POLICY(alg))
/** Whether the specified algorithm is a policy containing a MAC
* algorithm collection, sharing the same base algorithm but multiple
* allowed tag lengths.
*
* \param alg An algorithm identifier (value of type #psa_algorithm_t).
*
* \return 1 if \p alg is a MAC algorithm policy with minimum tag length,
* 0 otherwise.
* This macro may return either 0 or 1 if \p alg is not a supported
* algorithm identifier.
*/
#define PSA_ALG_IS_MAC_POLICY_WITH_MINIMUM_TAG_LENGTH(alg) \
((((alg) & PSA_ALG_CATEGORY_MASK) == PSA_ALG_CATEGORY_MAC) && \
PSA_ALG_IS_POLICY(alg))
/** Whether the specified algorithm is a symmetric cipher algorithm. /** Whether the specified algorithm is a symmetric cipher algorithm.
* *
@ -656,7 +690,8 @@
* algorithm identifier. * algorithm identifier.
*/ */
#define PSA_ALG_IS_CIPHER(alg) \ #define PSA_ALG_IS_CIPHER(alg) \
(((alg) & PSA_ALG_CATEGORY_MASK) == PSA_ALG_CATEGORY_CIPHER) ((((alg) & PSA_ALG_CATEGORY_MASK) == PSA_ALG_CATEGORY_CIPHER) && \
!PSA_ALG_IS_POLICY(alg))
/** Whether the specified algorithm is an authenticated encryption /** Whether the specified algorithm is an authenticated encryption
* with associated data (AEAD) algorithm. * with associated data (AEAD) algorithm.
@ -668,7 +703,23 @@
* algorithm identifier. * algorithm identifier.
*/ */
#define PSA_ALG_IS_AEAD(alg) \ #define PSA_ALG_IS_AEAD(alg) \
(((alg) & PSA_ALG_CATEGORY_MASK) == PSA_ALG_CATEGORY_AEAD) ((((alg) & PSA_ALG_CATEGORY_MASK) == PSA_ALG_CATEGORY_AEAD) && \
!PSA_ALG_IS_POLICY(alg))
/** Whether the specified algorithm is a policy containing an authenticated
* encryption with associated data (AEAD) algorithm collection, sharing the
* same base algorithm but multiple allowed tag lengths.
*
* \param alg An algorithm identifier (value of type #psa_algorithm_t).
*
* \return 1 if \p alg is an AEAD algorithm policy with minimum tag length,
* 0 otherwise.
* This macro may return either 0 or 1 if \p alg is not a supported
* algorithm identifier.
*/
#define PSA_ALG_IS_AEAD_POLICY_WITH_MINIMUM_TAG_LENGTH(alg) \
((((alg) & PSA_ALG_CATEGORY_MASK) == PSA_ALG_CATEGORY_AEAD) && \
PSA_ALG_IS_POLICY(alg))
/** Whether the specified algorithm is an asymmetric signature algorithm, /** Whether the specified algorithm is an asymmetric signature algorithm,
* also known as public-key signature algorithm. * also known as public-key signature algorithm.
@ -680,7 +731,8 @@
* algorithm identifier. * algorithm identifier.
*/ */
#define PSA_ALG_IS_SIGN(alg) \ #define PSA_ALG_IS_SIGN(alg) \
(((alg) & PSA_ALG_CATEGORY_MASK) == PSA_ALG_CATEGORY_SIGN) ((((alg) & PSA_ALG_CATEGORY_MASK) == PSA_ALG_CATEGORY_SIGN) && \
!PSA_ALG_IS_POLICY(alg))
/** Whether the specified algorithm is an asymmetric encryption algorithm, /** Whether the specified algorithm is an asymmetric encryption algorithm,
* also known as public-key encryption algorithm. * also known as public-key encryption algorithm.
@ -692,7 +744,8 @@
* algorithm identifier. * algorithm identifier.
*/ */
#define PSA_ALG_IS_ASYMMETRIC_ENCRYPTION(alg) \ #define PSA_ALG_IS_ASYMMETRIC_ENCRYPTION(alg) \
(((alg) & PSA_ALG_CATEGORY_MASK) == PSA_ALG_CATEGORY_ASYMMETRIC_ENCRYPTION) ((((alg) & PSA_ALG_CATEGORY_MASK) == PSA_ALG_CATEGORY_ASYMMETRIC_ENCRYPTION) && \
!PSA_ALG_IS_POLICY(alg))
/** Whether the specified algorithm is a key agreement algorithm. /** Whether the specified algorithm is a key agreement algorithm.
* *
@ -703,7 +756,8 @@
* algorithm identifier. * algorithm identifier.
*/ */
#define PSA_ALG_IS_KEY_AGREEMENT(alg) \ #define PSA_ALG_IS_KEY_AGREEMENT(alg) \
(((alg) & PSA_ALG_CATEGORY_MASK) == PSA_ALG_CATEGORY_KEY_AGREEMENT) ((((alg) & PSA_ALG_CATEGORY_MASK) == PSA_ALG_CATEGORY_KEY_AGREEMENT) && \
!PSA_ALG_IS_POLICY(alg))
/** Whether the specified algorithm is a key derivation algorithm. /** Whether the specified algorithm is a key derivation algorithm.
* *
@ -714,7 +768,8 @@
* algorithm identifier. * algorithm identifier.
*/ */
#define PSA_ALG_IS_KEY_DERIVATION(alg) \ #define PSA_ALG_IS_KEY_DERIVATION(alg) \
(((alg) & PSA_ALG_CATEGORY_MASK) == PSA_ALG_CATEGORY_KEY_DERIVATION) ((((alg) & PSA_ALG_CATEGORY_MASK) == PSA_ALG_CATEGORY_KEY_DERIVATION) && \
!PSA_ALG_IS_POLICY(alg))
#define PSA_ALG_HASH_MASK ((psa_algorithm_t)0x000000ff) #define PSA_ALG_HASH_MASK ((psa_algorithm_t)0x000000ff)
/** MD2 */ /** MD2 */
@ -914,6 +969,27 @@
(((alg) & (PSA_ALG_CATEGORY_MASK | PSA_ALG_MAC_SUBCATEGORY_MASK)) == \ (((alg) & (PSA_ALG_CATEGORY_MASK | PSA_ALG_MAC_SUBCATEGORY_MASK)) == \
PSA_ALG_CIPHER_MAC_BASE) PSA_ALG_CIPHER_MAC_BASE)
/** Macro to build a MAC minimum-tag-length algorithm policy.
*
* A mininimum-tag-length MAC algorithm policy contains all MAC algorithms
* sharing the same base algorithm, and where the tag length of the specific
* algorithm is equal to or larger then the policy's minimum tag length.
*
* \param mac_alg A MAC algorithm identifier (value of type
* #psa_algorithm_t such that #PSA_ALG_IS_MAC(\p alg)
* is true).
* \param tag_length Desired minimum length of the authentication tag in
* bytes.
*
* \return The corresponding MAC algorithm policy with the
* specified minimum length.
* \return Unspecified if \p alg is not a supported
* MAC algorithm or if \p tag_length is not valid
* for the specified MAC algorithm.
*/
#define PSA_ALG_MAC_POLICY_WITH_MINIMUM_TAG_LENGTH(mac_alg, tag_length) \
( PSA_ALG_TRUNCATED_MAC(mac_alg, tag_length) | PSA_ALG_POLICY_FLAG )
#define PSA_ALG_CIPHER_STREAM_FLAG ((psa_algorithm_t)0x00800000) #define PSA_ALG_CIPHER_STREAM_FLAG ((psa_algorithm_t)0x00800000)
#define PSA_ALG_CIPHER_FROM_BLOCK_FLAG ((psa_algorithm_t)0x00400000) #define PSA_ALG_CIPHER_FROM_BLOCK_FLAG ((psa_algorithm_t)0x00400000)
@ -1075,6 +1151,21 @@
((tag_length) << PSA_AEAD_TAG_LENGTH_OFFSET & \ ((tag_length) << PSA_AEAD_TAG_LENGTH_OFFSET & \
PSA_ALG_AEAD_TAG_LENGTH_MASK)) PSA_ALG_AEAD_TAG_LENGTH_MASK))
/** Retrieve the tag length of a specified AEAD algorithm
*
* \param aead_alg An AEAD algorithm identifier (value of type
* #psa_algorithm_t such that #PSA_ALG_IS_AEAD(\p alg)
* is true).
*
* \return The tag length specified by the input algorithm.
* \return Unspecified if \p alg is not a supported
* AEAD algorithm or if \p tag_length is not valid
* for the specified AEAD algorithm.
*/
#define PSA_ALG_AEAD_GET_TAG_LENGTH(aead_alg) \
(((aead_alg) & PSA_ALG_AEAD_TAG_LENGTH_MASK) >> \
PSA_AEAD_TAG_LENGTH_OFFSET )
/** Calculate the corresponding AEAD algorithm with the default tag length. /** Calculate the corresponding AEAD algorithm with the default tag length.
* *
* \param aead_alg An AEAD algorithm (\c PSA_ALG_XXX value such that * \param aead_alg An AEAD algorithm (\c PSA_ALG_XXX value such that
@ -1094,6 +1185,28 @@
PSA_ALG_AEAD_WITH_TAG_LENGTH(ref, 0) ? \ PSA_ALG_AEAD_WITH_TAG_LENGTH(ref, 0) ? \
ref : ref :
/** Macro to build an AEAD minimum-tag-length algorithm policy.
*
* A mininimum-tag-length AEAD algorithm policy contains all AEAD algorithms
* sharing the same base algorithm, and where the tag length of the specific
* algorithm is equal to or larger then the policy's minimum tag length.
*
* \param aead_alg An AEAD algorithm identifier (value of type
* #psa_algorithm_t such that #PSA_ALG_IS_AEAD(\p alg)
* is true).
* \param tag_length Desired minimum length of the authentication tag in
* bytes.
*
* \return The corresponding AEAD algorithm policy with the
* specified minimum length.
* \return Unspecified if \p alg is not a supported
* AEAD algorithm or if \p tag_length is not valid
* for the specified AEAD algorithm.
*/
#define PSA_ALG_AEAD_POLICY_WITH_MINIMUM_TAG_LENGTH(aead_alg, tag_length) \
( PSA_ALG_AEAD_WITH_TAG_LENGTH(aead_alg, tag_length) | \
PSA_ALG_POLICY_FLAG )
#define PSA_ALG_RSA_PKCS1V15_SIGN_BASE ((psa_algorithm_t)0x06000200) #define PSA_ALG_RSA_PKCS1V15_SIGN_BASE ((psa_algorithm_t)0x06000200)
/** RSA PKCS#1 v1.5 signature with hashing. /** RSA PKCS#1 v1.5 signature with hashing.
* *

23
library/psa_crypto.c
View file

@ -1179,6 +1179,9 @@ static psa_algorithm_t psa_key_policy_algorithm_intersection(
static int psa_key_algorithm_permits( psa_algorithm_t policy_alg, static int psa_key_algorithm_permits( psa_algorithm_t policy_alg,
psa_algorithm_t requested_alg ) psa_algorithm_t requested_alg )
{ {
/* A requested algorithm cannot be a collection. */
if( PSA_ALG_IS_POLICY( requested_alg ) )
return( 0 );
/* Common case: the policy only allows requested_alg. */ /* Common case: the policy only allows requested_alg. */
if( requested_alg == policy_alg ) if( requested_alg == policy_alg )
return( 1 ); return( 1 );
@ -1200,6 +1203,26 @@ static int psa_key_algorithm_permits( psa_algorithm_t policy_alg,
return( PSA_ALG_KEY_AGREEMENT_GET_BASE( requested_alg ) == return( PSA_ALG_KEY_AGREEMENT_GET_BASE( requested_alg ) ==
policy_alg ); policy_alg );
} }
/* If policy_alg is a policy, then special rules apply. */
if( PSA_ALG_IS_POLICY( policy_alg ) )
{
if( PSA_ALG_IS_AEAD_POLICY_WITH_MINIMUM_TAG_LENGTH( policy_alg ) &&
PSA_ALG_IS_AEAD( requested_alg ) &&
( PSA_ALG_AEAD_POLICY_WITH_MINIMUM_TAG_LENGTH( requested_alg, 0 ) ==
PSA_ALG_AEAD_POLICY_WITH_MINIMUM_TAG_LENGTH( policy_alg, 0 ) ) )
{
return( PSA_ALG_AEAD_GET_TAG_LENGTH( policy_alg ) <=
PSA_ALG_AEAD_GET_TAG_LENGTH( requested_alg ) );
}
if( PSA_ALG_IS_MAC_POLICY_WITH_MINIMUM_TAG_LENGTH( policy_alg ) &&
PSA_ALG_IS_MAC( requested_alg ) &&
( PSA_ALG_MAC_POLICY_WITH_MINIMUM_TAG_LENGTH( requested_alg, 0 ) ==
PSA_ALG_MAC_POLICY_WITH_MINIMUM_TAG_LENGTH( policy_alg, 0 ) ) )
{
return( PSA_MAC_TRUNCATED_LENGTH( policy_alg ) <=
PSA_MAC_TRUNCATED_LENGTH( requested_alg ) );
}
}
/* If it isn't permitted, it's forbidden. */ /* If it isn't permitted, it's forbidden. */
return( 0 ); return( 0 );
} }

66
tests/suites/test_suite_psa_crypto.data
View file

@ -393,31 +393,51 @@ key_attributes_init:
PSA key policy: MAC, sign | verify PSA key policy: MAC, sign | verify
depends_on:MBEDTLS_SHA256_C depends_on:MBEDTLS_SHA256_C
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) 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 key policy: MAC, wrong algorithm PSA key policy: MAC, wrong algorithm
depends_on:MBEDTLS_SHA256_C depends_on:MBEDTLS_SHA256_C
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_224) 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_224):PSA_ERROR_NOT_PERMITTED
PSA key policy: MAC, alg=0 in policy PSA key policy: MAC, alg=0 in policy
depends_on:MBEDTLS_SHA256_C depends_on:MBEDTLS_SHA256_C
mac_key_policy:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH:0:PSA_KEY_TYPE_HMAC:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_HMAC(PSA_ALG_SHA_256) mac_key_policy:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH:0:PSA_KEY_TYPE_HMAC:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_HMAC(PSA_ALG_SHA_256):PSA_ERROR_NOT_PERMITTED
PSA key policy: MAC, ANY_HASH in policy is not meaningful PSA key policy: MAC, ANY_HASH in policy is not meaningful
depends_on:MBEDTLS_SHA256_C depends_on:MBEDTLS_SHA256_C
mac_key_policy:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH:PSA_ALG_HMAC(PSA_ALG_ANY_HASH):PSA_KEY_TYPE_HMAC:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_HMAC(PSA_ALG_SHA_256) mac_key_policy:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH:PSA_ALG_HMAC(PSA_ALG_ANY_HASH):PSA_KEY_TYPE_HMAC:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_HMAC(PSA_ALG_SHA_256):PSA_ERROR_NOT_PERMITTED
PSA key policy: MAC, sign but not verify PSA key policy: MAC, sign but not verify
depends_on:MBEDTLS_SHA256_C depends_on:MBEDTLS_SHA256_C
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) 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 key policy: MAC, verify but not sign PSA key policy: MAC, verify but not sign
depends_on:MBEDTLS_SHA256_C depends_on:MBEDTLS_SHA256_C
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) 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
PSA key policy: MAC, neither sign nor verify PSA key policy: MAC, neither sign nor verify
depends_on:MBEDTLS_SHA256_C depends_on:MBEDTLS_SHA256_C
mac_key_policy:0:PSA_ALG_HMAC(PSA_ALG_SHA_256):PSA_KEY_TYPE_HMAC:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_HMAC(PSA_ALG_SHA_256) 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 key policy: MAC, sign-verify, policy smaller than alg
depends_on:MBEDTLS_SHA256_C
mac_key_policy:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH:PSA_ALG_MAC_POLICY_WITH_MINIMUM_TAG_LENGTH(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 key policy: MAC, sign-verify, policy same-length as alg
depends_on:MBEDTLS_SHA256_C
mac_key_policy:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH:PSA_ALG_MAC_POLICY_WITH_MINIMUM_TAG_LENGTH(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 key policy: MAC, sign-verify, policy larger than alg
depends_on:MBEDTLS_SHA256_C
mac_key_policy:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH:PSA_ALG_MAC_POLICY_WITH_MINIMUM_TAG_LENGTH(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 key policy: MAC, sign-verify, policy alg does not match base alg
depends_on:MBEDTLS_SHA256_C:MBEDTLS_CMAC_C
mac_key_policy:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH:PSA_ALG_MAC_POLICY_WITH_MINIMUM_TAG_LENGTH(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 key policy: MAC, sign-verify, exercise with policy
depends_on:MBEDTLS_SHA256_C
mac_key_policy:PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_VERIFY_HASH:PSA_ALG_MAC_POLICY_WITH_MINIMUM_TAG_LENGTH(PSA_ALG_HMAC(PSA_ALG_SHA_256), 20):PSA_KEY_TYPE_HMAC:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":PSA_ALG_MAC_POLICY_WITH_MINIMUM_TAG_LENGTH(PSA_ALG_HMAC(PSA_ALG_SHA_256), 20):PSA_ERROR_NOT_PERMITTED
PSA key policy: cipher, encrypt | decrypt PSA key policy: cipher, encrypt | decrypt
depends_on:MBEDTLS_AES_C:MBEDTLS_CIPHER_MODE_CTR depends_on:MBEDTLS_AES_C:MBEDTLS_CIPHER_MODE_CTR
@ -445,27 +465,47 @@ cipher_key_policy:PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_DECRYPT:0:PSA_KEY_TYPE_A
PSA key policy: AEAD, encrypt | decrypt PSA key policy: AEAD, encrypt | decrypt
depends_on:MBEDTLS_AES_C:MBEDTLS_CCM_C depends_on:MBEDTLS_AES_C:MBEDTLS_CCM_C
aead_key_policy:PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_DECRYPT:PSA_ALG_CCM:PSA_KEY_TYPE_AES:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":13:16:PSA_ALG_CCM aead_key_policy:PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_DECRYPT:PSA_ALG_CCM:PSA_KEY_TYPE_AES:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":13:16:PSA_ALG_CCM:PSA_SUCCESS
PSA key policy: AEAD, wrong algorithm PSA key policy: AEAD, wrong algorithm
depends_on:MBEDTLS_AES_C:MBEDTLS_CCM_C:MBEDTLS_GCM_C depends_on:MBEDTLS_AES_C:MBEDTLS_CCM_C:MBEDTLS_GCM_C
aead_key_policy:PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_DECRYPT:PSA_ALG_CCM:PSA_KEY_TYPE_AES:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":16:16:PSA_ALG_GCM aead_key_policy:PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_DECRYPT:PSA_ALG_CCM:PSA_KEY_TYPE_AES:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":16:16:PSA_ALG_GCM:PSA_ERROR_NOT_PERMITTED
PSA key policy: AEAD, alg=0 in policy PSA key policy: AEAD, alg=0 in policy
depends_on:MBEDTLS_AES_C:MBEDTLS_CCM_C depends_on:MBEDTLS_AES_C:MBEDTLS_CCM_C
aead_key_policy:PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_DECRYPT:0:PSA_KEY_TYPE_AES:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":16:16:PSA_ALG_CCM aead_key_policy:PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_DECRYPT:0:PSA_KEY_TYPE_AES:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":16:16:PSA_ALG_CCM:PSA_ERROR_NOT_PERMITTED
PSA key policy: AEAD, encrypt but not decrypt PSA key policy: AEAD, encrypt but not decrypt
depends_on:MBEDTLS_AES_C:MBEDTLS_CCM_C depends_on:MBEDTLS_AES_C:MBEDTLS_CCM_C
aead_key_policy:PSA_KEY_USAGE_ENCRYPT:PSA_ALG_CCM:PSA_KEY_TYPE_AES:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":13:16:PSA_ALG_CCM aead_key_policy:PSA_KEY_USAGE_ENCRYPT:PSA_ALG_CCM:PSA_KEY_TYPE_AES:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":13:16:PSA_ALG_CCM:PSA_SUCCESS
PSA key policy: AEAD, decrypt but not encrypt PSA key policy: AEAD, decrypt but not encrypt
depends_on:MBEDTLS_AES_C:MBEDTLS_CCM_C depends_on:MBEDTLS_AES_C:MBEDTLS_CCM_C
aead_key_policy:PSA_KEY_USAGE_DECRYPT:PSA_ALG_CCM:PSA_KEY_TYPE_AES:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":13:16:PSA_ALG_CCM aead_key_policy:PSA_KEY_USAGE_DECRYPT:PSA_ALG_CCM:PSA_KEY_TYPE_AES:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":13:16:PSA_ALG_CCM:PSA_SUCCESS
PSA key policy: AEAD, neither encrypt nor decrypt PSA key policy: AEAD, neither encrypt nor decrypt
depends_on:MBEDTLS_AES_C:MBEDTLS_CCM_C depends_on:MBEDTLS_AES_C:MBEDTLS_CCM_C
aead_key_policy:0:PSA_ALG_CCM:PSA_KEY_TYPE_AES:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":13:16:PSA_ALG_CCM aead_key_policy:0:PSA_ALG_CCM:PSA_KEY_TYPE_AES:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":13:16:PSA_ALG_CCM:PSA_ERROR_NOT_PERMITTED
PSA key policy: AEAD, exercise policy with larger tag length alg
depends_on:MBEDTLS_AES_C:MBEDTLS_CCM_C
aead_key_policy:PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_DECRYPT:PSA_ALG_AEAD_POLICY_WITH_MINIMUM_TAG_LENGTH(PSA_ALG_CCM, 4):PSA_KEY_TYPE_AES:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":13:8:PSA_ALG_AEAD_WITH_TAG_LENGTH(PSA_ALG_CCM, 8):PSA_SUCCESS
PSA key policy: AEAD, exercise policy with same-length alg
depends_on:MBEDTLS_AES_C:MBEDTLS_CCM_C
aead_key_policy:PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_DECRYPT:PSA_ALG_AEAD_POLICY_WITH_MINIMUM_TAG_LENGTH(PSA_ALG_CCM, 4):PSA_KEY_TYPE_AES:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":13:4:PSA_ALG_AEAD_WITH_TAG_LENGTH(PSA_ALG_CCM, 4):PSA_SUCCESS
PSA key policy: AEAD, exercise policy with lesser-length alg
depends_on:MBEDTLS_AES_C:MBEDTLS_CCM_C
aead_key_policy:PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_DECRYPT:PSA_ALG_AEAD_POLICY_WITH_MINIMUM_TAG_LENGTH(PSA_ALG_CCM, 8):PSA_KEY_TYPE_AES:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":13:4:PSA_ALG_AEAD_WITH_TAG_LENGTH(PSA_ALG_CCM, 4):PSA_ERROR_NOT_PERMITTED
PSA key policy: AEAD, exercise policy with different base alg
depends_on:MBEDTLS_AES_C:MBEDTLS_CCM_C:MBEDTLS_GCM_C
aead_key_policy:PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_DECRYPT:PSA_ALG_AEAD_POLICY_WITH_MINIMUM_TAG_LENGTH(PSA_ALG_CCM, 4):PSA_KEY_TYPE_AES:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":13:4:PSA_ALG_AEAD_WITH_TAG_LENGTH(PSA_ALG_GCM, 4):PSA_ERROR_NOT_PERMITTED
PSA key policy: AEAD, exercise algorithm with a policy
depends_on:MBEDTLS_AES_C:MBEDTLS_CCM_C
aead_key_policy:PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_DECRYPT:PSA_ALG_AEAD_POLICY_WITH_MINIMUM_TAG_LENGTH(PSA_ALG_CCM, 8):PSA_KEY_TYPE_AES:"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa":13:8:PSA_ALG_AEAD_POLICY_WITH_MINIMUM_TAG_LENGTH(PSA_ALG_CCM, 8):PSA_ERROR_NOT_PERMITTED
PSA key policy: asymmetric encryption, encrypt | decrypt PSA key policy: asymmetric encryption, encrypt | decrypt
depends_on:MBEDTLS_RSA_C:MBEDTLS_PKCS1_V15 depends_on:MBEDTLS_RSA_C:MBEDTLS_PKCS1_V15

35
tests/suites/test_suite_psa_crypto.function
View file

@ -1956,12 +1956,14 @@ void mac_key_policy( int policy_usage,
int policy_alg, int policy_alg,
int key_type, int key_type,
data_t *key_data, data_t *key_data,
int exercise_alg ) int exercise_alg,
int expected_status_arg )
{ {
mbedtls_svc_key_id_t key = MBEDTLS_SVC_KEY_ID_INIT; mbedtls_svc_key_id_t key = MBEDTLS_SVC_KEY_ID_INIT;
psa_key_attributes_t attributes = PSA_KEY_ATTRIBUTES_INIT; psa_key_attributes_t attributes = PSA_KEY_ATTRIBUTES_INIT;
psa_mac_operation_t operation = PSA_MAC_OPERATION_INIT; psa_mac_operation_t operation = PSA_MAC_OPERATION_INIT;
psa_status_t status; psa_status_t status;
psa_status_t expected_status = expected_status_arg;
unsigned char mac[PSA_MAC_MAX_SIZE]; unsigned char mac[PSA_MAC_MAX_SIZE];
PSA_ASSERT( psa_crypto_init( ) ); PSA_ASSERT( psa_crypto_init( ) );
@ -1974,20 +1976,19 @@ void mac_key_policy( int policy_usage,
&key ) ); &key ) );
status = psa_mac_sign_setup( &operation, key, exercise_alg ); status = psa_mac_sign_setup( &operation, key, exercise_alg );
if( policy_alg == exercise_alg && if( ( policy_usage & PSA_KEY_USAGE_SIGN_HASH ) == 0 )
( policy_usage & PSA_KEY_USAGE_SIGN_HASH ) != 0 )
PSA_ASSERT( status );
else
TEST_EQUAL( status, PSA_ERROR_NOT_PERMITTED ); TEST_EQUAL( status, PSA_ERROR_NOT_PERMITTED );
else
TEST_EQUAL( status, expected_status );
psa_mac_abort( &operation ); psa_mac_abort( &operation );
memset( mac, 0, sizeof( mac ) ); memset( mac, 0, sizeof( mac ) );
status = psa_mac_verify_setup( &operation, key, exercise_alg ); status = psa_mac_verify_setup( &operation, key, exercise_alg );
if( policy_alg == exercise_alg && if( ( policy_usage & PSA_KEY_USAGE_VERIFY_HASH ) == 0 )
( policy_usage & PSA_KEY_USAGE_VERIFY_HASH ) != 0 )
PSA_ASSERT( status );
else
TEST_EQUAL( status, PSA_ERROR_NOT_PERMITTED ); TEST_EQUAL( status, PSA_ERROR_NOT_PERMITTED );
else
TEST_EQUAL( status, expected_status );
exit: exit:
psa_mac_abort( &operation ); psa_mac_abort( &operation );
@ -2046,11 +2047,13 @@ void aead_key_policy( int policy_usage,
data_t *key_data, data_t *key_data,
int nonce_length_arg, int nonce_length_arg,
int tag_length_arg, int tag_length_arg,
int exercise_alg ) int exercise_alg,
int expected_status_arg )
{ {
mbedtls_svc_key_id_t key = MBEDTLS_SVC_KEY_ID_INIT; mbedtls_svc_key_id_t key = MBEDTLS_SVC_KEY_ID_INIT;
psa_key_attributes_t attributes = PSA_KEY_ATTRIBUTES_INIT; psa_key_attributes_t attributes = PSA_KEY_ATTRIBUTES_INIT;
psa_status_t status; psa_status_t status;
psa_status_t expected_status = expected_status_arg;
unsigned char nonce[16] = {0}; unsigned char nonce[16] = {0};
size_t nonce_length = nonce_length_arg; size_t nonce_length = nonce_length_arg;
unsigned char tag[16]; unsigned char tag[16];
@ -2075,9 +2078,8 @@ void aead_key_policy( int policy_usage,
NULL, 0, NULL, 0,
tag, tag_length, tag, tag_length,
&output_length ); &output_length );
if( policy_alg == exercise_alg && if( ( policy_usage & PSA_KEY_USAGE_ENCRYPT ) != 0 )
( policy_usage & PSA_KEY_USAGE_ENCRYPT ) != 0 ) TEST_EQUAL( status, expected_status );
PSA_ASSERT( status );
else else
TEST_EQUAL( status, PSA_ERROR_NOT_PERMITTED ); TEST_EQUAL( status, PSA_ERROR_NOT_PERMITTED );
@ -2088,11 +2090,12 @@ void aead_key_policy( int policy_usage,
tag, tag_length, tag, tag_length,
NULL, 0, NULL, 0,
&output_length ); &output_length );
if( policy_alg == exercise_alg && if( ( policy_usage & PSA_KEY_USAGE_DECRYPT ) == 0 )
( policy_usage & PSA_KEY_USAGE_DECRYPT ) != 0 ) TEST_EQUAL( status, PSA_ERROR_NOT_PERMITTED );
else if( expected_status == PSA_SUCCESS )
TEST_EQUAL( status, PSA_ERROR_INVALID_SIGNATURE ); TEST_EQUAL( status, PSA_ERROR_INVALID_SIGNATURE );
else else
TEST_EQUAL( status, PSA_ERROR_NOT_PERMITTED ); TEST_EQUAL( status, expected_status );
exit: exit:
psa_destroy_key( key ); psa_destroy_key( key );