| /* BEGIN_HEADER */ |
| |
| #include <psa/crypto.h> |
| |
| #include <test/psa_crypto_helpers.h> |
| #include <test/psa_exercise_key.h> |
| |
| #include <psa_crypto_its.h> |
| |
| #define TEST_FLAG_EXERCISE 0x00000001 |
| #define TEST_FLAG_READ_ONLY 0x00000002 |
| |
| /** Write a key with the given attributes and key material to storage. |
| * Test that it has the expected representation. |
| * |
| * On error, including if the key representation in storage differs, |
| * mark the test case as failed and return 0. On success, return 1. |
| */ |
| static int test_written_key( const psa_key_attributes_t *attributes, |
| const data_t *material, |
| psa_storage_uid_t uid, |
| const data_t *expected_representation ) |
| { |
| mbedtls_svc_key_id_t created_key_id = MBEDTLS_SVC_KEY_ID_INIT; |
| uint8_t *actual_representation = NULL; |
| size_t length; |
| struct psa_storage_info_t storage_info; |
| int ok = 0; |
| |
| /* Create a key with the given parameters. */ |
| PSA_ASSERT( psa_import_key( attributes, material->x, material->len, |
| &created_key_id ) ); |
| TEST_ASSERT( mbedtls_svc_key_id_equal( psa_get_key_id( attributes ), |
| created_key_id ) ); |
| |
| /* Check that the key is represented as expected. */ |
| PSA_ASSERT( psa_its_get_info( uid, &storage_info ) ); |
| TEST_EQUAL( storage_info.size, expected_representation->len ); |
| ASSERT_ALLOC( actual_representation, storage_info.size ); |
| PSA_ASSERT( psa_its_get( uid, 0, storage_info.size, |
| actual_representation, &length ) ); |
| ASSERT_COMPARE( expected_representation->x, expected_representation->len, |
| actual_representation, length ); |
| |
| ok = 1; |
| |
| exit: |
| mbedtls_free( actual_representation ); |
| return( ok ); |
| } |
| |
| /** Check if a key is exportable. */ |
| static int can_export( const psa_key_attributes_t *attributes ) |
| { |
| if( psa_get_key_usage_flags( attributes ) & PSA_KEY_USAGE_EXPORT ) |
| return( 1 ); |
| else if( PSA_KEY_TYPE_IS_PUBLIC_KEY( psa_get_key_type( attributes ) ) ) |
| return( 1 ); |
| else |
| return( 0 ); |
| } |
| |
| /** Write a key with the given representation to storage, then check |
| * that it has the given attributes and (if exportable) key material. |
| * |
| * On error, including if the key representation in storage differs, |
| * mark the test case as failed and return 0. On success, return 1. |
| */ |
| static int test_read_key( const psa_key_attributes_t *expected_attributes, |
| const data_t *expected_material, |
| psa_storage_uid_t uid, |
| const data_t *representation, |
| int flags ) |
| { |
| psa_key_attributes_t actual_attributes = PSA_KEY_ATTRIBUTES_INIT; |
| mbedtls_svc_key_id_t key_id = psa_get_key_id( expected_attributes ); |
| struct psa_storage_info_t storage_info; |
| int ok = 0; |
| uint8_t *exported_material = NULL; |
| size_t length; |
| |
| /* Prime the storage with a key file. */ |
| PSA_ASSERT( psa_its_set( uid, representation->len, representation->x, 0 ) ); |
| |
| /* Check that the injected key exists and looks as expected. */ |
| PSA_ASSERT( psa_get_key_attributes( key_id, &actual_attributes ) ); |
| TEST_ASSERT( mbedtls_svc_key_id_equal( key_id, |
| psa_get_key_id( &actual_attributes ) ) ); |
| TEST_EQUAL( psa_get_key_lifetime( expected_attributes ), |
| psa_get_key_lifetime( &actual_attributes ) ); |
| TEST_EQUAL( psa_get_key_type( expected_attributes ), |
| psa_get_key_type( &actual_attributes ) ); |
| TEST_EQUAL( psa_get_key_bits( expected_attributes ), |
| psa_get_key_bits( &actual_attributes ) ); |
| TEST_EQUAL( psa_get_key_usage_flags( expected_attributes ), |
| psa_get_key_usage_flags( &actual_attributes ) ); |
| TEST_EQUAL( psa_get_key_algorithm( expected_attributes ), |
| psa_get_key_algorithm( &actual_attributes ) ); |
| TEST_EQUAL( psa_get_key_enrollment_algorithm( expected_attributes ), |
| psa_get_key_enrollment_algorithm( &actual_attributes ) ); |
| if( can_export( expected_attributes ) ) |
| { |
| ASSERT_ALLOC( exported_material, expected_material->len ); |
| PSA_ASSERT( psa_export_key( key_id, |
| exported_material, expected_material->len, |
| &length ) ); |
| ASSERT_COMPARE( expected_material->x, expected_material->len, |
| exported_material, length ); |
| } |
| |
| if( flags & TEST_FLAG_EXERCISE ) |
| { |
| TEST_ASSERT( mbedtls_test_psa_exercise_key( |
| key_id, |
| psa_get_key_usage_flags( expected_attributes ), |
| psa_get_key_algorithm( expected_attributes ) ) ); |
| } |
| |
| |
| if( flags & TEST_FLAG_READ_ONLY ) |
| { |
| /* Read-only keys cannot be removed through the API. |
| * The key will be removed through ITS in the cleanup code below. */ |
| TEST_EQUAL( PSA_ERROR_NOT_PERMITTED, psa_destroy_key( key_id ) ); |
| } |
| else |
| { |
| /* Destroy the key. Confirm through direct access to the storage. */ |
| PSA_ASSERT( psa_destroy_key( key_id ) ); |
| TEST_EQUAL( PSA_ERROR_DOES_NOT_EXIST, |
| psa_its_get_info( uid, &storage_info ) ); |
| } |
| |
| ok = 1; |
| |
| exit: |
| psa_reset_key_attributes( &actual_attributes ); |
| psa_its_remove( uid ); |
| mbedtls_free( exported_material ); |
| return( ok ); |
| } |
| |
| /* END_HEADER */ |
| |
| /* BEGIN_DEPENDENCIES |
| * depends_on:MBEDTLS_PSA_CRYPTO_C:MBEDTLS_PSA_CRYPTO_STORAGE_C |
| * END_DEPENDENCIES |
| */ |
| |
| /* BEGIN_CASE */ |
| void key_storage_save( int lifetime_arg, int type_arg, int bits_arg, |
| int usage_arg, int alg_arg, int alg2_arg, |
| data_t *material, |
| data_t *representation ) |
| { |
| /* Forward compatibility: save a key in the current format and |
| * check that it has the expected format so that future versions |
| * will still be able to read it. */ |
| |
| psa_key_lifetime_t lifetime = lifetime_arg; |
| psa_key_type_t type = type_arg; |
| size_t bits = bits_arg; |
| psa_key_usage_t usage = usage_arg; |
| psa_algorithm_t alg = alg_arg; |
| psa_algorithm_t alg2 = alg2_arg; |
| mbedtls_svc_key_id_t key_id = mbedtls_svc_key_id_make( 0, 1 ); |
| psa_storage_uid_t uid = 1; |
| psa_key_attributes_t attributes = PSA_KEY_ATTRIBUTES_INIT; |
| |
| PSA_INIT( ); |
| TEST_USES_KEY_ID( key_id ); |
| |
| psa_set_key_lifetime( &attributes, lifetime ); |
| psa_set_key_id( &attributes, key_id ); |
| psa_set_key_type( &attributes, type ); |
| psa_set_key_bits( &attributes, bits ); |
| psa_set_key_usage_flags( &attributes, usage ); |
| psa_set_key_algorithm( &attributes, alg ); |
| psa_set_key_enrollment_algorithm( &attributes, alg2 ); |
| |
| /* This is the current storage format. Test that we know exactly how |
| * the key is stored. The stability of the test data in future |
| * versions of Mbed TLS will guarantee that future versions |
| * can read back what this version wrote. */ |
| TEST_ASSERT( test_written_key( &attributes, material, |
| uid, representation ) ); |
| |
| exit: |
| psa_reset_key_attributes( &attributes ); |
| psa_destroy_key( key_id ); |
| PSA_DONE( ); |
| } |
| /* END_CASE */ |
| |
| /* BEGIN_CASE */ |
| void key_storage_read( int lifetime_arg, int type_arg, int bits_arg, |
| int usage_arg, int alg_arg, int alg2_arg, |
| data_t *material, |
| data_t *representation, int flags ) |
| { |
| /* Backward compatibility: read a key in the format of a past version |
| * and check that this version can use it. */ |
| |
| psa_key_lifetime_t lifetime = lifetime_arg; |
| psa_key_type_t type = type_arg; |
| size_t bits = bits_arg; |
| psa_key_usage_t usage = usage_arg; |
| psa_algorithm_t alg = alg_arg; |
| psa_algorithm_t alg2 = alg2_arg; |
| mbedtls_svc_key_id_t key_id = mbedtls_svc_key_id_make( 0, 1 ); |
| psa_storage_uid_t uid = 1; |
| psa_key_attributes_t attributes = PSA_KEY_ATTRIBUTES_INIT; |
| |
| PSA_INIT( ); |
| TEST_USES_KEY_ID( key_id ); |
| |
| psa_set_key_lifetime( &attributes, lifetime ); |
| psa_set_key_id( &attributes, key_id ); |
| psa_set_key_type( &attributes, type ); |
| psa_set_key_bits( &attributes, bits ); |
| psa_set_key_usage_flags( &attributes, usage ); |
| psa_set_key_algorithm( &attributes, alg ); |
| psa_set_key_enrollment_algorithm( &attributes, alg2 ); |
| |
| /* Test that we can use a key with the given representation. This |
| * guarantees backward compatibility with keys that were stored by |
| * past versions of Mbed TLS. */ |
| TEST_ASSERT( test_read_key( &attributes, material, |
| uid, representation, flags ) ); |
| |
| exit: |
| psa_reset_key_attributes( &attributes ); |
| PSA_DONE( ); |
| } |
| /* END_CASE */ |
