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Add exercise_key for raw key agreement

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This commit is contained in:
Gilles Peskine 2019-04-11 21:24:55 +02:00
parent 0216fe16b7
commit 2e46e9cf21
1 changed files with 56 additions and 0 deletions
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56
tests/suites/test_suite_psa_crypto.function
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@ -597,6 +597,60 @@ exit:
return( status ); return( status );
} }
/* We need two keys to exercise key agreement. Exercise the
* private key against its own public key. */
static psa_status_t raw_key_agreement_with_self( psa_algorithm_t alg,
psa_key_handle_t handle )
{
psa_key_type_t private_key_type;
psa_key_type_t public_key_type;
size_t key_bits;
uint8_t *public_key = NULL;
size_t public_key_length;
uint8_t output[1024];
size_t output_length;
/* Return GENERIC_ERROR if something other than the final call to
* psa_key_agreement fails. This isn't fully satisfactory, but it's
* good enough: callers will report it as a failed test anyway. */
psa_status_t status = PSA_ERROR_GENERIC_ERROR;
PSA_ASSERT( psa_get_key_information( handle,
&private_key_type,
&key_bits ) );
public_key_type = PSA_KEY_TYPE_PUBLIC_KEY_OF_KEYPAIR( private_key_type );
public_key_length = PSA_KEY_EXPORT_MAX_SIZE( public_key_type, key_bits );
ASSERT_ALLOC( public_key, public_key_length );
PSA_ASSERT( psa_export_public_key( handle,
public_key, public_key_length,
&public_key_length ) );
status = psa_key_agreement_raw_shared_secret(
alg, handle,
public_key, public_key_length,
output, sizeof( output ), &output_length );
exit:
mbedtls_free( public_key );
return( status );
}
static int exercise_raw_key_agreement_key( psa_key_handle_t handle,
psa_key_usage_t usage,
psa_algorithm_t alg )
{
int ok = 0;
if( usage & PSA_KEY_USAGE_DERIVE )
{
/* We need two keys to exercise key agreement. Exercise the
* private key against its own public key. */
PSA_ASSERT( raw_key_agreement_with_self( alg, handle ) );
}
ok = 1;
exit:
return( ok );
}
static int exercise_key_agreement_key( psa_key_handle_t handle, static int exercise_key_agreement_key( psa_key_handle_t handle,
psa_key_usage_t usage, psa_key_usage_t usage,
psa_algorithm_t alg ) psa_algorithm_t alg )
@ -973,6 +1027,8 @@ static int exercise_key( psa_key_handle_t handle,
ok = exercise_asymmetric_encryption_key( handle, usage, alg ); ok = exercise_asymmetric_encryption_key( handle, usage, alg );
else if( PSA_ALG_IS_KEY_DERIVATION( alg ) ) else if( PSA_ALG_IS_KEY_DERIVATION( alg ) )
ok = exercise_key_derivation_key( handle, usage, alg ); ok = exercise_key_derivation_key( handle, usage, alg );
else if( PSA_ALG_IS_RAW_KEY_AGREEMENT( alg ) )
ok = exercise_raw_key_agreement_key( handle, usage, alg );
else if( PSA_ALG_IS_KEY_AGREEMENT( alg ) ) else if( PSA_ALG_IS_KEY_AGREEMENT( alg ) )
ok = exercise_key_agreement_key( handle, usage, alg ); ok = exercise_key_agreement_key( handle, usage, alg );
else else