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tests: psa: Refine choice of default hash algorithm for signature

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As PSA signatures rely on built-in hash implementations
(cannot take an advantage of an accelerator for the
time being), chose an available built-in hash for
tests exercising a signature key.

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
This commit is contained in:
Ronald Cron 2021-08-31 19:08:55 +02:00
parent d2c53e60ca
commit ef14af04c7
2 changed files with 30 additions and 2 deletions
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28
tests/include/test/psa_exercise_key.h
View File

@ -56,6 +56,34 @@
#undef KNOWN_SUPPORTED_HASH_ALG #undef KNOWN_SUPPORTED_HASH_ALG
#endif #endif
/** \def KNOWN_MBEDTLS_SUPPORTED_HASH_ALG
*
* A hash algorithm that is known to be supported by Mbed TLS APIs.
*
* This is used in some smoke tests where the hash algorithm is used as
* part of another algorithm like a signature algorithm and the hashing is
* completed through an Mbed TLS hash API, not the PSA one.
*/
#if defined(MBEDTLS_MD2_C)
#define KNOWN_MBEDTLS_SUPPORTED_HASH_ALG PSA_ALG_MD2
#elif defined(MBEDTLS_MD4_C)
#define KNOWN_MBEDTLS_SUPPORTED_HASH_ALG PSA_ALG_MD4
#elif defined(MBEDTLS_MD5_C)
#define KNOWN_MBEDTLS_SUPPORTED_HASH_ALG PSA_ALG_MD5
/* MBEDTLS_RIPEMD160_C omitted. This is necessary for the sake of
* exercise_signature_key() because Mbed TLS doesn't support RIPEMD160
* in RSA PKCS#1v1.5 signatures. A RIPEMD160-only configuration would be
* implausible anyway. */
#elif defined(MBEDTLS_SHA1_C)
#define KNOWN_MBEDTLS_SUPPORTED_HASH_ALG PSA_ALG_SHA_1
#elif defined(MBEDTLS_SHA256_C)
#define KNOWN_MBEDTLS_SUPPORTED_HASH_ALG PSA_ALG_SHA_256
#elif defined(MBEDTLS_SHA512_C)
#define KNOWN_MBEDTLS_SUPPORTED_HASH_ALG PSA_ALG_SHA_512
#else
#undef KNOWN_MBEDLTS_SUPPORTED_HASH_ALG
#endif
/** \def KNOWN_SUPPORTED_BLOCK_CIPHER /** \def KNOWN_SUPPORTED_BLOCK_CIPHER
* *
* A block cipher that is known to be supported. * A block cipher that is known to be supported.

4
tests/src/psa_exercise_key.c
View File

@ -309,8 +309,8 @@ static int exercise_signature_key( mbedtls_svc_key_id_t key,
/* If the policy allows signing with any hash, just pick one. */ /* If the policy allows signing with any hash, just pick one. */
if( PSA_ALG_IS_SIGN_HASH( alg ) && hash_alg == PSA_ALG_ANY_HASH ) if( PSA_ALG_IS_SIGN_HASH( alg ) && hash_alg == PSA_ALG_ANY_HASH )
{ {
#if defined(KNOWN_SUPPORTED_HASH_ALG) #if defined(KNOWN_MBEDTLS_SUPPORTED_HASH_ALG)
hash_alg = KNOWN_SUPPORTED_HASH_ALG; hash_alg = KNOWN_MBEDTLS_SUPPORTED_HASH_ALG;
alg ^= PSA_ALG_ANY_HASH ^ hash_alg; alg ^= PSA_ALG_ANY_HASH ^ hash_alg;
#else #else
TEST_ASSERT( ! "No hash algorithm for hash-and-sign testing" ); TEST_ASSERT( ! "No hash algorithm for hash-and-sign testing" );