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mbedtls/tests/suites/test_suite_psa_crypto_slot_management.function
Ronald Cron 3a4f0e3cc4 tests: psa: Reset key attributes where needed 
After a call to psa_get_key_attributes() to retrieve
the attributes of a key into a psa_key_attributes_t
structure, a call to psa_reset_key_attributes() is
mandated to free the resources that may be
referenced by the psa_key_attributes_t structure.
Not calling psa_reset_key_attributes() may result in
a memory leak.

When a test function calls psa_get_key_parameters()
the associated key attributes are systematically
reset in the clean-up part of the function with a
comment to emphasize the need for the reset and make
it more visible.

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
2020-11-20 13:57:26 +01:00

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/* BEGIN_HEADER */
#include <stdint.h>
#include "test/psa_crypto_helpers.h"
#include "psa_crypto_slot_management.h"
#include "psa_crypto_storage.h"
typedef enum
{
/**< Close key(s) */
INVALIDATE_BY_CLOSING,
/**< Destroy key(s) */
INVALIDATE_BY_DESTROYING,
/**< Purge key(s) */
INVALIDATE_BY_PURGING,
/**< Terminate and reinitialize without closing/destroying keys */
INVALIDATE_BY_SHUTDOWN,
/**< Close key(s) then terminate and re-initialize */
INVALIDATE_BY_CLOSING_WITH_SHUTDOWN,
/**< Destroy key(s) then terminate and re-initialize */
INVALIDATE_BY_DESTROYING_WITH_SHUTDOWN,
/**< Purge key(s) then terminate and re-initialize */
INVALIDATE_BY_PURGING_WITH_SHUTDOWN,
} invalidate_method_t;
typedef enum
{
KEEP_OPEN,
CLOSE_BEFORE,
CLOSE_AFTER,
} reopen_policy_t;
typedef enum
{
INVALID_HANDLE_0,
INVALID_HANDLE_UNOPENED,
INVALID_HANDLE_CLOSED,
INVALID_HANDLE_HUGE,
} invalid_handle_construction_t;
/* All test functions that create persistent keys must call
* `TEST_USES_KEY_ID( key_id )` before creating a persistent key with this
* identifier, and must call psa_purge_key_storage() in their cleanup
* code. */
#if defined(MBEDTLS_PSA_CRYPTO_STORAGE_C)
static mbedtls_svc_key_id_t key_ids_used_in_test[9];
static size_t num_key_ids_used;
/* Record a key id as potentially used in a test case. */
static int test_uses_key_id( mbedtls_svc_key_id_t key_id )
{
size_t i;
if( MBEDTLS_SVC_KEY_ID_GET_KEY_ID( key_id ) >
PSA_MAX_PERSISTENT_KEY_IDENTIFIER )
{
/* Don't touch key id values that designate non-key files. */
return( 1 );
}
for( i = 0; i < num_key_ids_used ; i++ )
{
if( mbedtls_svc_key_id_equal( key_id, key_ids_used_in_test[i] ) )
return( 1 );
}
if( num_key_ids_used == ARRAY_LENGTH( key_ids_used_in_test ) )
return( 0 );
key_ids_used_in_test[num_key_ids_used] = key_id;
++num_key_ids_used;
return( 1 );
}
#define TEST_USES_KEY_ID( key_id ) \
TEST_ASSERT( test_uses_key_id( key_id ) )
/* Destroy all key ids that may have been created by the current test case. */
static void psa_purge_key_storage( void )
{
size_t i;
for( i = 0; i < num_key_ids_used; i++ )
psa_destroy_persistent_key( key_ids_used_in_test[i] );
num_key_ids_used = 0;
}
#else
#define TEST_USES_KEY_ID( key_id ) ( (void) ( key_id ) )
#endif /* MBEDTLS_PSA_CRYPTO_STORAGE_C */
/** Apply \p invalidate_method to invalidate the specified key:
* close it, destroy it, or do nothing;
*/
static int invalidate_key( invalidate_method_t invalidate_method,
mbedtls_svc_key_id_t key )
{
switch( invalidate_method )
{
/* Closing the key invalidate only volatile keys, not persistent ones. */
case INVALIDATE_BY_CLOSING:
case INVALIDATE_BY_CLOSING_WITH_SHUTDOWN:
PSA_ASSERT( psa_close_key( key ) );
break;
case INVALIDATE_BY_DESTROYING:
case INVALIDATE_BY_DESTROYING_WITH_SHUTDOWN:
PSA_ASSERT( psa_destroy_key( key ) );
break;
/* Purging the key just purges RAM data of persistent keys. */
case INVALIDATE_BY_PURGING:
case INVALIDATE_BY_PURGING_WITH_SHUTDOWN:
PSA_ASSERT( psa_purge_key( key ) );
break;
case INVALIDATE_BY_SHUTDOWN:
break;
}
return( 1 );
exit:
return( 0 );
}
/** Restart the PSA subsystem if \p invalidate_method says so. */
static int invalidate_psa( invalidate_method_t invalidate_method )
{
switch( invalidate_method )
{
case INVALIDATE_BY_CLOSING:
case INVALIDATE_BY_DESTROYING:
case INVALIDATE_BY_PURGING:
return( 1 );
case INVALIDATE_BY_CLOSING_WITH_SHUTDOWN:
case INVALIDATE_BY_DESTROYING_WITH_SHUTDOWN:
case INVALIDATE_BY_PURGING_WITH_SHUTDOWN:
/* All keys must have been closed. */
PSA_DONE( );
break;
case INVALIDATE_BY_SHUTDOWN:
/* Some keys may remain behind, and we're testing that this
* properly closes them. */
mbedtls_psa_crypto_free( );
break;
}
PSA_ASSERT( psa_crypto_init( ) );
ASSERT_PSA_PRISTINE( );
return( 1 );
exit:
return( 0 );
}
/* END_HEADER */
/* BEGIN_DEPENDENCIES
* depends_on:MBEDTLS_PSA_CRYPTO_C
* END_DEPENDENCIES
*/
/* BEGIN_CASE */
void transient_slot_lifecycle( int owner_id_arg,
int usage_arg, int alg_arg,
int type_arg, data_t *key_data,
int invalidate_method_arg )
{
psa_algorithm_t alg = alg_arg;
psa_key_usage_t usage_flags = usage_arg;
psa_key_type_t type = type_arg;
invalidate_method_t invalidate_method = invalidate_method_arg;
mbedtls_svc_key_id_t key = MBEDTLS_SVC_KEY_ID_INIT;
psa_key_attributes_t attributes = PSA_KEY_ATTRIBUTES_INIT;
PSA_ASSERT( psa_crypto_init( ) );
/* Import a key. */
#if defined(MBEDTLS_PSA_CRYPTO_KEY_ID_ENCODES_OWNER)
mbedtls_key_owner_id_t owner_id = owner_id_arg;
mbedtls_set_key_owner_id( &attributes, owner_id );
#else
(void)owner_id_arg;
#endif
psa_set_key_usage_flags( &attributes, usage_flags );
psa_set_key_algorithm( &attributes, alg );
psa_set_key_type( &attributes, type );
PSA_ASSERT( psa_import_key( &attributes, key_data->x, key_data->len,
&key ) );
TEST_ASSERT( ! mbedtls_svc_key_id_is_null( key ) );
PSA_ASSERT( psa_get_key_attributes( key, &attributes ) );
TEST_EQUAL( psa_get_key_type( &attributes ), type );
psa_reset_key_attributes( &attributes );
#if defined(MBEDTLS_PSA_CRYPTO_KEY_ID_ENCODES_OWNER)
{
psa_key_handle_t handle;
mbedtls_svc_key_id_t key_with_invalid_owner =
mbedtls_svc_key_id_make( owner_id + 1,
MBEDTLS_SVC_KEY_ID_GET_KEY_ID( key ) );
TEST_ASSERT( mbedtls_key_owner_id_equal(
owner_id,
MBEDTLS_SVC_KEY_ID_GET_OWNER_ID( key ) ) );
TEST_EQUAL( psa_open_key( key_with_invalid_owner, &handle ),
PSA_ERROR_DOES_NOT_EXIST );
}
#endif
/*
* Purge the key and make sure that it is still valid, as purging a
* volatile key shouldn't invalidate/destroy it.
*/
PSA_ASSERT( psa_purge_key( key ) );
PSA_ASSERT( psa_get_key_attributes( key, &attributes ) );
TEST_EQUAL( psa_get_key_type( &attributes ), type );
psa_reset_key_attributes( &attributes );
/* Do something that invalidates the key. */
if( ! invalidate_key( invalidate_method, key ) )
goto exit;
if( ! invalidate_psa( invalidate_method ) )
goto exit;
/* Test that the key is now invalid. */
TEST_EQUAL( psa_get_key_attributes( key, &attributes ),
PSA_ERROR_DOES_NOT_EXIST );
TEST_EQUAL( psa_close_key( key ), PSA_ERROR_DOES_NOT_EXIST );
exit:
/*
* Key attributes may have been returned by psa_get_key_attributes()
* thus reset them as required.
*/
psa_reset_key_attributes( &attributes );
PSA_DONE( );
}
/* END_CASE */
/* BEGIN_CASE depends_on:MBEDTLS_PSA_CRYPTO_STORAGE_C */
void persistent_slot_lifecycle( int lifetime_arg, int owner_id_arg, int id_arg,
int usage_arg, int alg_arg, int alg2_arg,
int type_arg, data_t *key_data,
int invalidate_method_arg )
{
psa_key_lifetime_t lifetime = lifetime_arg;
mbedtls_svc_key_id_t id = mbedtls_svc_key_id_make( owner_id_arg, id_arg );
psa_algorithm_t alg = alg_arg;
psa_algorithm_t alg2 = alg2_arg;
psa_key_usage_t usage_flags = usage_arg;
psa_key_type_t type = type_arg;
invalidate_method_t invalidate_method = invalidate_method_arg;
mbedtls_svc_key_id_t returned_id = MBEDTLS_SVC_KEY_ID_INIT;
psa_key_handle_t handle = PSA_KEY_HANDLE_INIT;
psa_key_attributes_t attributes = PSA_KEY_ATTRIBUTES_INIT;
psa_key_attributes_t read_attributes = PSA_KEY_ATTRIBUTES_INIT;
uint8_t *reexported = NULL;
size_t reexported_length = -1;
#if defined(MBEDTLS_PSA_CRYPTO_KEY_ID_ENCODES_OWNER)
mbedtls_svc_key_id_t wrong_owner_id =
mbedtls_svc_key_id_make( owner_id_arg + 1, id_arg );
mbedtls_svc_key_id_t invalid_svc_key_id = MBEDTLS_SVC_KEY_ID_INIT;
#endif
TEST_USES_KEY_ID( id );
PSA_ASSERT( psa_crypto_init( ) );
psa_set_key_id( &attributes, id );
psa_set_key_lifetime( &attributes, lifetime );
psa_set_key_type( &attributes, type );
psa_set_key_usage_flags( &attributes, usage_flags );
psa_set_key_algorithm( &attributes, alg );
psa_set_key_enrollment_algorithm( &attributes, alg2 );
PSA_ASSERT( psa_import_key( &attributes, key_data->x, key_data->len,
&returned_id ) );
TEST_ASSERT( mbedtls_svc_key_id_equal( id, returned_id ) );
#if defined(MBEDTLS_PSA_CRYPTO_KEY_ID_ENCODES_OWNER)
TEST_EQUAL( psa_open_key( wrong_owner_id, &invalid_svc_key_id ),
PSA_ERROR_DOES_NOT_EXIST );
#endif
PSA_ASSERT( psa_get_key_attributes( id, &attributes ) );
TEST_EQUAL( psa_get_key_lifetime( &attributes ), lifetime );
TEST_ASSERT( mbedtls_svc_key_id_equal(
psa_get_key_id( &attributes ), id ) );
TEST_EQUAL( psa_get_key_usage_flags( &attributes ), usage_flags );
TEST_EQUAL( psa_get_key_algorithm( &attributes ), alg );
TEST_EQUAL( psa_get_key_enrollment_algorithm( &attributes ), alg2 );
TEST_EQUAL( psa_get_key_type( &attributes ), type );
/* Close the key and then open it. */
PSA_ASSERT( psa_close_key( id ) );
#if defined(MBEDTLS_PSA_CRYPTO_KEY_ID_ENCODES_OWNER)
TEST_EQUAL( psa_open_key( wrong_owner_id, &invalid_svc_key_id ),
PSA_ERROR_DOES_NOT_EXIST );
#endif
PSA_ASSERT( psa_open_key( id, &handle ) );
TEST_ASSERT( ! psa_key_handle_is_null( handle ) );
PSA_ASSERT( psa_get_key_attributes( handle, &attributes ) );
TEST_EQUAL( psa_get_key_lifetime( &attributes ), lifetime );
TEST_ASSERT( mbedtls_svc_key_id_equal(
psa_get_key_id( &attributes ), id ) );
TEST_EQUAL( psa_get_key_usage_flags( &attributes ), usage_flags );
TEST_EQUAL( psa_get_key_algorithm( &attributes ), alg );
TEST_EQUAL( psa_get_key_enrollment_algorithm( &attributes ), alg2 );
TEST_EQUAL( psa_get_key_type( &attributes ), type );
/*
* Do something that wipes key data in volatile memory or destroy the
* key.
*/
if( ! invalidate_key( invalidate_method, id ) )
goto exit;
if( ! invalidate_psa( invalidate_method ) )
goto exit;
/* Try to reaccess the key. If we destroyed it, check that it doesn't
* exist. Otherwise check that it still exists and has the expected
* content. */
switch( invalidate_method )
{
case INVALIDATE_BY_CLOSING:
case INVALIDATE_BY_CLOSING_WITH_SHUTDOWN:
case INVALIDATE_BY_PURGING:
case INVALIDATE_BY_PURGING_WITH_SHUTDOWN:
case INVALIDATE_BY_SHUTDOWN:
PSA_ASSERT( psa_open_key( id, &handle ) );
PSA_ASSERT( psa_get_key_attributes( id, &read_attributes ) );
TEST_EQUAL( psa_get_key_lifetime( &attributes ),
psa_get_key_lifetime( &read_attributes ) );
TEST_ASSERT( mbedtls_svc_key_id_equal(
psa_get_key_id( &attributes ),
psa_get_key_id( &read_attributes ) ) );
TEST_EQUAL( psa_get_key_usage_flags( &attributes ), usage_flags );
TEST_EQUAL( psa_get_key_algorithm( &attributes ),
psa_get_key_algorithm( &read_attributes ) );
TEST_EQUAL( psa_get_key_enrollment_algorithm( &attributes ),
psa_get_key_enrollment_algorithm( &read_attributes ) );
TEST_EQUAL( psa_get_key_type( &attributes ),
psa_get_key_type( &read_attributes ) );
TEST_EQUAL( psa_get_key_bits( &attributes ),
psa_get_key_bits( &read_attributes ) );
if( usage_flags & PSA_KEY_USAGE_EXPORT )
{
ASSERT_ALLOC( reexported, key_data->len );
PSA_ASSERT( psa_export_key( id, reexported, key_data->len,
&reexported_length ) );
ASSERT_COMPARE( key_data->x, key_data->len,
reexported, reexported_length );
}
else
{
TEST_EQUAL( psa_export_key( id, NULL, 0, &reexported_length ),
PSA_ERROR_NOT_PERMITTED );
}
PSA_ASSERT( psa_close_key( handle ) );
break;
case INVALIDATE_BY_DESTROYING:
case INVALIDATE_BY_DESTROYING_WITH_SHUTDOWN:
/*
* Test that the key handle and identifier are now not refering to an
* existing key.
*/
TEST_EQUAL( psa_get_key_attributes( handle, &read_attributes ),
PSA_ERROR_DOES_NOT_EXIST );
TEST_EQUAL( psa_close_key( handle ), PSA_ERROR_DOES_NOT_EXIST );
TEST_EQUAL( psa_get_key_attributes( id, &read_attributes ),
PSA_ERROR_DOES_NOT_EXIST );
break;
}
exit:
/*
* Key attributes may have been returned by psa_get_key_attributes()
* thus reset them as required.
*/
psa_reset_key_attributes( &attributes );
psa_reset_key_attributes( &read_attributes );
PSA_DONE( );
psa_purge_key_storage( );
mbedtls_free( reexported );
}
/* END_CASE */
/* BEGIN_CASE depends_on:MBEDTLS_PSA_CRYPTO_STORAGE_C */
void create_existent( int lifetime_arg, int owner_id_arg, int id_arg,
int reopen_policy_arg )
{
psa_key_lifetime_t lifetime = lifetime_arg;
mbedtls_svc_key_id_t id = mbedtls_svc_key_id_make( owner_id_arg, id_arg );
mbedtls_svc_key_id_t returned_id = MBEDTLS_SVC_KEY_ID_INIT;
psa_key_attributes_t attributes = PSA_KEY_ATTRIBUTES_INIT;
psa_key_type_t type1 = PSA_KEY_TYPE_RAW_DATA;
const uint8_t material1[5] = "a key";
const uint8_t material2[5] = "b key";
size_t bits1 = PSA_BYTES_TO_BITS( sizeof( material1 ) );
uint8_t reexported[sizeof( material1 )];
size_t reexported_length;
reopen_policy_t reopen_policy = reopen_policy_arg;
TEST_USES_KEY_ID( id );
PSA_ASSERT( psa_crypto_init( ) );
/* Create a key. */
psa_set_key_id( &attributes, id );
psa_set_key_lifetime( &attributes, lifetime );
psa_set_key_type( &attributes, type1 );
psa_set_key_usage_flags( &attributes, PSA_KEY_USAGE_EXPORT );
psa_set_key_algorithm( &attributes, 0 );
PSA_ASSERT( psa_import_key( &attributes, material1, sizeof( material1 ),
&returned_id ) );
TEST_ASSERT( mbedtls_svc_key_id_equal( id, returned_id ) );
if( reopen_policy == CLOSE_BEFORE )
PSA_ASSERT( psa_close_key( id ) );
/* Attempt to create a new key in the same slot. */
TEST_EQUAL( psa_import_key( &attributes, material2, sizeof( material2 ),
&returned_id ),
PSA_ERROR_ALREADY_EXISTS );
TEST_ASSERT( mbedtls_svc_key_id_is_null( returned_id ) );
if( reopen_policy == CLOSE_AFTER )
PSA_ASSERT( psa_close_key( id ) );
/* Check that the original key hasn't changed. */
psa_reset_key_attributes( &attributes );
PSA_ASSERT( psa_get_key_attributes( id, &attributes ) );
TEST_ASSERT( mbedtls_svc_key_id_equal(
psa_get_key_id( &attributes ), id ) );
TEST_EQUAL( psa_get_key_lifetime( &attributes ), lifetime );
TEST_EQUAL( psa_get_key_type( &attributes ), type1 );
TEST_EQUAL( psa_get_key_bits( &attributes ), bits1 );
TEST_EQUAL( psa_get_key_usage_flags( &attributes ), PSA_KEY_USAGE_EXPORT );
TEST_EQUAL( psa_get_key_algorithm( &attributes ), 0 );
PSA_ASSERT( psa_export_key( id,
reexported, sizeof( reexported ),
&reexported_length ) );
ASSERT_COMPARE( material1, sizeof( material1 ),
reexported, reexported_length );
PSA_ASSERT( psa_close_key( id ) );
exit:
/*
* Key attributes may have been returned by psa_get_key_attributes()
* thus reset them as required.
*/
psa_reset_key_attributes( &attributes );
PSA_DONE( );
psa_purge_key_storage( );
}
/* END_CASE */
/* BEGIN_CASE */
void open_fail( int id_arg,
int expected_status_arg )
{
mbedtls_svc_key_id_t id = mbedtls_svc_key_id_make( 1, id_arg );
psa_status_t expected_status = expected_status_arg;
psa_key_handle_t handle = mbedtls_svc_key_id_make( 0xdead, 0xdead );
PSA_ASSERT( psa_crypto_init( ) );
TEST_EQUAL( psa_open_key( id, &handle ), expected_status );
TEST_ASSERT( psa_key_handle_is_null( handle ) );
exit:
PSA_DONE( );
}
/* END_CASE */
/* BEGIN_CASE */
void create_fail( int lifetime_arg, int id_arg,
int expected_status_arg )
{
psa_key_lifetime_t lifetime = lifetime_arg;
mbedtls_svc_key_id_t id = mbedtls_svc_key_id_make( 1, id_arg );
psa_key_attributes_t attributes = PSA_KEY_ATTRIBUTES_INIT;
psa_status_t expected_status = expected_status_arg;
mbedtls_svc_key_id_t returned_id =
mbedtls_svc_key_id_make( 0xdead, 0xdead );
uint8_t material[1] = {'k'};
TEST_USES_KEY_ID( id );
PSA_ASSERT( psa_crypto_init( ) );
psa_set_key_lifetime( &attributes, lifetime );
if( PSA_KEY_LIFETIME_IS_VOLATILE( lifetime ) )
{
/*
* Not possible to set a key identifier different from 0 through
* PSA key attributes APIs thus accessing to the attributes
* directly.
*/
attributes.core.id = id;
}
else
psa_set_key_id( &attributes, id );
psa_set_key_type( &attributes, PSA_KEY_TYPE_RAW_DATA );
TEST_EQUAL( psa_import_key( &attributes, material, sizeof( material ),
&returned_id ),
expected_status );
TEST_ASSERT( mbedtls_svc_key_id_is_null( returned_id ) );
exit:
PSA_DONE( );
#if defined(MBEDTLS_PSA_CRYPTO_STORAGE_C)
psa_purge_key_storage( );
#endif
}
/* END_CASE */
/* BEGIN_CASE */
void copy_across_lifetimes( int source_lifetime_arg, int source_owner_id_arg,
int source_id_arg, int source_usage_arg,
int source_alg_arg, int source_alg2_arg,
int type_arg, data_t *material,
int target_lifetime_arg, int target_owner_id_arg,
int target_id_arg, int target_usage_arg,
int target_alg_arg, int target_alg2_arg,
int expected_usage_arg,
int expected_alg_arg, int expected_alg2_arg )
{
psa_key_lifetime_t source_lifetime = source_lifetime_arg;
mbedtls_svc_key_id_t source_id =
mbedtls_svc_key_id_make( source_owner_id_arg, source_id_arg );
psa_key_usage_t source_usage = source_usage_arg;
psa_algorithm_t source_alg = source_alg_arg;
psa_key_attributes_t source_attributes = PSA_KEY_ATTRIBUTES_INIT;
psa_key_type_t source_type = type_arg;
mbedtls_svc_key_id_t returned_source_id = MBEDTLS_SVC_KEY_ID_INIT;
psa_key_lifetime_t target_lifetime = target_lifetime_arg;
mbedtls_svc_key_id_t target_id =
mbedtls_svc_key_id_make( target_owner_id_arg, target_id_arg );
psa_key_usage_t target_usage = target_usage_arg;
psa_algorithm_t target_alg = target_alg_arg;
psa_key_attributes_t target_attributes = PSA_KEY_ATTRIBUTES_INIT;
mbedtls_svc_key_id_t returned_target_id = MBEDTLS_SVC_KEY_ID_INIT;
psa_key_handle_t target_handle = PSA_KEY_HANDLE_INIT;
psa_key_usage_t expected_usage = expected_usage_arg;
psa_algorithm_t expected_alg = expected_alg_arg;
psa_algorithm_t expected_alg2 = expected_alg2_arg;
uint8_t *export_buffer = NULL;
TEST_USES_KEY_ID( source_id );
TEST_USES_KEY_ID( target_id );
PSA_ASSERT( psa_crypto_init( ) );
/* Populate the source slot. */
psa_set_key_id( &source_attributes, source_id );
psa_set_key_lifetime( &source_attributes, source_lifetime );
psa_set_key_type( &source_attributes, source_type );
psa_set_key_usage_flags( &source_attributes, source_usage );
psa_set_key_algorithm( &source_attributes, source_alg );
psa_set_key_enrollment_algorithm( &source_attributes, source_alg2_arg );
PSA_ASSERT( psa_import_key( &source_attributes,
material->x, material->len,
&returned_source_id ) );
/* Update the attributes with the bit size. */
PSA_ASSERT( psa_get_key_attributes( returned_source_id,
&source_attributes ) );
/* Prepare the target slot. */
psa_set_key_id( &target_attributes, target_id );
psa_set_key_lifetime( &target_attributes, target_lifetime );
psa_set_key_usage_flags( &target_attributes, target_usage );
psa_set_key_algorithm( &target_attributes, target_alg );
psa_set_key_enrollment_algorithm( &target_attributes, target_alg2_arg );
/* Copy the key. */
PSA_ASSERT( psa_copy_key( returned_source_id,
&target_attributes, &returned_target_id ) );
/* Destroy the source to ensure that this doesn't affect the target. */
PSA_ASSERT( psa_destroy_key( returned_source_id ) );
/* If the target key is persistent, restart the system to make
* sure that the material is still alive. */
if( ! PSA_KEY_LIFETIME_IS_VOLATILE( target_lifetime ) )
{
mbedtls_psa_crypto_free( );
PSA_ASSERT( psa_crypto_init( ) );
PSA_ASSERT( psa_open_key( target_id, &target_handle ) );
}
/* Test that the target slot has the expected content. */
psa_reset_key_attributes( &target_attributes );
PSA_ASSERT( psa_get_key_attributes( returned_target_id,
&target_attributes ) );
if( ! PSA_KEY_LIFETIME_IS_VOLATILE( target_lifetime ) )
{
TEST_ASSERT( mbedtls_svc_key_id_equal(
target_id, psa_get_key_id( &target_attributes ) ) );
}
else
{
#if defined(MBEDTLS_PSA_CRYPTO_KEY_ID_ENCODES_OWNER)
TEST_EQUAL( MBEDTLS_SVC_KEY_ID_GET_OWNER_ID( returned_target_id ),
target_owner_id_arg );
#endif
}
TEST_EQUAL( target_lifetime, psa_get_key_lifetime( &target_attributes ) );
TEST_EQUAL( source_type, psa_get_key_type( &target_attributes ) );
TEST_EQUAL( psa_get_key_bits( &source_attributes ),
psa_get_key_bits( &target_attributes ) );
TEST_EQUAL( expected_usage, psa_get_key_usage_flags( &target_attributes ) );
TEST_EQUAL( expected_alg, psa_get_key_algorithm( &target_attributes ) );
TEST_EQUAL( expected_alg2,
psa_get_key_enrollment_algorithm( &target_attributes ) );
if( expected_usage & PSA_KEY_USAGE_EXPORT )
{
size_t length;
ASSERT_ALLOC( export_buffer, material->len );
PSA_ASSERT( psa_export_key( returned_target_id, export_buffer,
material->len, &length ) );
ASSERT_COMPARE( material->x, material->len,
export_buffer, length );
}
else
{
size_t length;
/* Check that the key is actually non-exportable. */
TEST_EQUAL( psa_export_key( returned_target_id, export_buffer,
material->len, &length ),
PSA_ERROR_NOT_PERMITTED );
}
PSA_ASSERT( psa_destroy_key( returned_target_id ) );
exit:
/*
* Source and target key attributes may have been returned by
* psa_get_key_attributes() thus reset them as required.
*/
psa_reset_key_attributes( &source_attributes );
psa_reset_key_attributes( &target_attributes );
PSA_DONE( );
mbedtls_free( export_buffer );
#if defined(MBEDTLS_PSA_CRYPTO_STORAGE_C)
psa_purge_key_storage( );
#endif
}
/* END_CASE */
/* BEGIN_CASE */
void copy_to_occupied( int source_lifetime_arg, int source_id_arg,
int source_usage_arg, int source_alg_arg,
int source_type_arg, data_t *source_material,
int target_lifetime_arg, int target_id_arg,
int target_usage_arg, int target_alg_arg,
int target_type_arg, data_t *target_material )
{
psa_key_lifetime_t source_lifetime = source_lifetime_arg;
mbedtls_svc_key_id_t source_id =
mbedtls_svc_key_id_make( 1, source_id_arg );
psa_key_usage_t source_usage = source_usage_arg;
psa_algorithm_t source_alg = source_alg_arg;
psa_key_type_t source_type = source_type_arg;
mbedtls_svc_key_id_t returned_source_id = MBEDTLS_SVC_KEY_ID_INIT;
psa_key_lifetime_t target_lifetime = target_lifetime_arg;
mbedtls_svc_key_id_t target_id =
mbedtls_svc_key_id_make( 1, target_id_arg );
psa_key_usage_t target_usage = target_usage_arg;
psa_algorithm_t target_alg = target_alg_arg;
psa_key_type_t target_type = target_type_arg;
mbedtls_svc_key_id_t returned_target_id = MBEDTLS_SVC_KEY_ID_INIT;
mbedtls_svc_key_id_t new_key = MBEDTLS_SVC_KEY_ID_INIT;
uint8_t *export_buffer = NULL;
psa_key_attributes_t attributes = PSA_KEY_ATTRIBUTES_INIT;
psa_key_attributes_t attributes1 = PSA_KEY_ATTRIBUTES_INIT;
psa_key_attributes_t attributes2 = PSA_KEY_ATTRIBUTES_INIT;
TEST_USES_KEY_ID( source_id );
TEST_USES_KEY_ID( target_id );
PSA_ASSERT( psa_crypto_init( ) );
/* Populate the source slot. */
if( ! PSA_KEY_LIFETIME_IS_VOLATILE( source_lifetime ) )
{
psa_set_key_id( &attributes, source_id );
psa_set_key_lifetime( &attributes, source_lifetime );
}
psa_set_key_type( &attributes, source_type );
psa_set_key_usage_flags( &attributes, source_usage );
psa_set_key_algorithm( &attributes, source_alg );
PSA_ASSERT( psa_import_key( &attributes,
source_material->x, source_material->len,
&returned_source_id ) );
/* Populate the target slot. */
if( mbedtls_svc_key_id_equal( target_id, source_id ) )
{
returned_target_id = returned_source_id;
}
else
{
psa_set_key_id( &attributes1, target_id );
psa_set_key_lifetime( &attributes1, target_lifetime );
psa_set_key_type( &attributes1, target_type );
psa_set_key_usage_flags( &attributes1, target_usage );
psa_set_key_algorithm( &attributes1, target_alg );
PSA_ASSERT( psa_import_key( &attributes1,
target_material->x, target_material->len,
&returned_target_id ) );
}
PSA_ASSERT( psa_get_key_attributes( returned_target_id, &attributes1 ) );
/* Make a copy attempt. */
psa_set_key_id( &attributes, target_id );
psa_set_key_lifetime( &attributes, target_lifetime );
TEST_EQUAL( psa_copy_key( returned_source_id,
&attributes, &new_key ),
PSA_ERROR_ALREADY_EXISTS );
TEST_ASSERT( mbedtls_svc_key_id_is_null( new_key ) );
/* Test that the target slot is unaffected. */
PSA_ASSERT( psa_get_key_attributes( returned_target_id, &attributes2 ) );
TEST_ASSERT( mbedtls_svc_key_id_equal(
psa_get_key_id( &attributes1 ),
psa_get_key_id( &attributes2 ) ) );
TEST_EQUAL( psa_get_key_lifetime( &attributes1 ),
psa_get_key_lifetime( &attributes2 ) );
TEST_EQUAL( psa_get_key_type( &attributes1 ),
psa_get_key_type( &attributes2 ) );
TEST_EQUAL( psa_get_key_bits( &attributes1 ),
psa_get_key_bits( &attributes2 ) );
TEST_EQUAL( psa_get_key_usage_flags( &attributes1 ),
psa_get_key_usage_flags( &attributes2 ) );
TEST_EQUAL( psa_get_key_algorithm( &attributes1 ),
psa_get_key_algorithm( &attributes2 ) );
if( target_usage & PSA_KEY_USAGE_EXPORT )
{
size_t length;
ASSERT_ALLOC( export_buffer, target_material->len );
PSA_ASSERT( psa_export_key( returned_target_id, export_buffer,
target_material->len, &length ) );
ASSERT_COMPARE( target_material->x, target_material->len,
export_buffer, length );
}
PSA_ASSERT( psa_destroy_key( returned_source_id ) );
if( ! mbedtls_svc_key_id_equal( target_id, source_id ) )
PSA_ASSERT( psa_destroy_key( returned_target_id ) );
exit:
/*
* Key attributes may have been returned by psa_get_key_attributes()
* thus reset them as required.
*/
psa_reset_key_attributes( &attributes1 );
psa_reset_key_attributes( &attributes2 );
PSA_DONE( );
mbedtls_free( export_buffer );
#if defined(MBEDTLS_PSA_CRYPTO_STORAGE_C)
psa_purge_key_storage( );
#endif
}
/* END_CASE */
/* BEGIN_CASE */
void invalid_handle( int handle_construction,
int close_status_arg, int usage_status_arg )
{
psa_key_handle_t valid_handle = PSA_KEY_HANDLE_INIT;
psa_key_handle_t invalid_handle = PSA_KEY_HANDLE_INIT;
psa_key_id_t key_id;
psa_status_t close_status = close_status_arg;
psa_status_t usage_status = usage_status_arg;
psa_key_attributes_t attributes = PSA_KEY_ATTRIBUTES_INIT;
uint8_t material[1] = "a";
PSA_ASSERT( psa_crypto_init( ) );
/* Allocate a handle and store a key in it. */
psa_set_key_type( &attributes, PSA_KEY_TYPE_RAW_DATA );
psa_set_key_usage_flags( &attributes, 0 );
psa_set_key_algorithm( &attributes, 0 );
PSA_ASSERT( psa_import_key( &attributes,
material, sizeof( material ),
&valid_handle ) );
TEST_ASSERT( ! psa_key_handle_is_null( valid_handle ) );
/* Construct an invalid handle as specified in the test case data. */
switch( handle_construction )
{
case INVALID_HANDLE_0:
invalid_handle = PSA_KEY_HANDLE_INIT;
break;
case INVALID_HANDLE_UNOPENED:
/*
* MBEDTLS_SVC_KEY_ID_GET_KEY_ID( valid_handle ) is a volatile
* key identifier as the imported key is a volatile key. Volatile
* key identifiers are in the range from PSA_KEY_ID_VOLATILE_MIN
* to PSA_KEY_ID_VOLATILE_MAX included. Thus pick a key identifier
* in the range from PSA_KEY_ID_VOLATILE_MIN to
* PSA_KEY_ID_VOLATILE_MAX different from
* MBEDTLS_SVC_KEY_ID_GET_KEY_ID( valid_handle ) to build an
* unopened and thus invalid identifier.
*/
if( MBEDTLS_SVC_KEY_ID_GET_KEY_ID( valid_handle ) ==
PSA_KEY_ID_VOLATILE_MIN )
key_id = PSA_KEY_ID_VOLATILE_MIN + 1;
else
key_id = MBEDTLS_SVC_KEY_ID_GET_KEY_ID( valid_handle ) - 1;
invalid_handle =
mbedtls_svc_key_id_make( 0, key_id );
break;
case INVALID_HANDLE_CLOSED:
PSA_ASSERT( psa_import_key( &attributes,
material, sizeof( material ),
&invalid_handle ) );
PSA_ASSERT( psa_destroy_key( invalid_handle ) );
break;
case INVALID_HANDLE_HUGE:
invalid_handle =
mbedtls_svc_key_id_make( 0, PSA_KEY_ID_VENDOR_MAX + 1 );
break;
default:
TEST_ASSERT( ! "unknown handle construction" );
}
/* Attempt to use the invalid handle. */
TEST_EQUAL( psa_get_key_attributes( invalid_handle, &attributes ),
usage_status );
TEST_EQUAL( psa_close_key( invalid_handle ), close_status );
TEST_EQUAL( psa_destroy_key( invalid_handle ), close_status );
/* After all this, check that the original handle is intact. */
PSA_ASSERT( psa_get_key_attributes( valid_handle, &attributes ) );
TEST_EQUAL( psa_get_key_type( &attributes ), PSA_KEY_TYPE_RAW_DATA );
TEST_EQUAL( psa_get_key_bits( &attributes ),
PSA_BYTES_TO_BITS( sizeof( material ) ) );
PSA_ASSERT( psa_close_key( valid_handle ) );
exit:
/*
* Key attributes may have been returned by psa_get_key_attributes()
* thus reset them as required.
*/
psa_reset_key_attributes( &attributes );
PSA_DONE( );
}
/* END_CASE */
/* BEGIN_CASE */
void many_transient_keys( int max_keys_arg )
{
mbedtls_svc_key_id_t *keys = NULL;
size_t max_keys = max_keys_arg;
size_t i, j;
psa_status_t status;
psa_key_attributes_t attributes = PSA_KEY_ATTRIBUTES_INIT;
uint8_t exported[sizeof( size_t )];
size_t exported_length;
ASSERT_ALLOC( keys, max_keys );
PSA_ASSERT( psa_crypto_init( ) );
psa_set_key_usage_flags( &attributes, PSA_KEY_USAGE_EXPORT );
psa_set_key_algorithm( &attributes, 0 );
psa_set_key_type( &attributes, PSA_KEY_TYPE_RAW_DATA );
for( i = 0; i < max_keys; i++ )
{
status = psa_import_key( &attributes,
(uint8_t *) &i, sizeof( i ),
&keys[i] );
if( status == PSA_ERROR_INSUFFICIENT_MEMORY )
break;
PSA_ASSERT( status );
TEST_ASSERT( ! mbedtls_svc_key_id_is_null( keys[i] ) );
for( j = 0; j < i; j++ )
TEST_ASSERT( ! mbedtls_svc_key_id_equal( keys[i], keys[j] ) );
}
max_keys = i;
for( i = 1; i < max_keys; i++ )
{
PSA_ASSERT( psa_close_key( keys[i - 1] ) );
PSA_ASSERT( psa_export_key( keys[i],
exported, sizeof( exported ),
&exported_length ) );
ASSERT_COMPARE( exported, exported_length,
(uint8_t *) &i, sizeof( i ) );
}
PSA_ASSERT( psa_close_key( keys[i - 1] ) );
exit:
PSA_DONE( );
mbedtls_free( keys );
}
/* END_CASE */
/* BEGIN_CASE depends_on:MBEDTLS_PSA_CRYPTO_STORAGE_C */
void key_slot_eviction_to_import_new_key( int lifetime_arg )
{
psa_key_lifetime_t lifetime = (psa_key_lifetime_t)lifetime_arg;
size_t i;
psa_key_attributes_t attributes = PSA_KEY_ATTRIBUTES_INIT;
uint8_t exported[sizeof( size_t )];
size_t exported_length;
mbedtls_svc_key_id_t key, returned_key_id;
PSA_ASSERT( psa_crypto_init( ) );
psa_set_key_usage_flags( &attributes, PSA_KEY_USAGE_EXPORT );
psa_set_key_algorithm( &attributes, 0 );
psa_set_key_type( &attributes, PSA_KEY_TYPE_RAW_DATA );
/*
* Create PSA_KEY_SLOT_COUNT persistent keys.
*/
for( i = 0; i < PSA_KEY_SLOT_COUNT; i++ )
{
key = mbedtls_svc_key_id_make( i, i + 1 );
psa_set_key_id( &attributes, key );
PSA_ASSERT( psa_import_key( &attributes,
(uint8_t *) &i, sizeof( i ),
&returned_key_id ) );
TEST_ASSERT( mbedtls_svc_key_id_equal( returned_key_id, key ) );
}
/*
* Create a new persistent or volatile key. When creating the key,
* one of the descriptions of the previously created persistent keys
* is removed from the RAM key slots. This makes room to store its
* description in RAM.
*/
i = PSA_KEY_SLOT_COUNT;
key = mbedtls_svc_key_id_make( i, i + 1 );
psa_set_key_id( &attributes, key );
psa_set_key_lifetime( &attributes, lifetime );
PSA_ASSERT( psa_import_key( &attributes,
(uint8_t *) &i, sizeof( i ),
&returned_key_id ) );
if( lifetime != PSA_KEY_LIFETIME_VOLATILE )
TEST_ASSERT( mbedtls_svc_key_id_equal( returned_key_id, key ) );
else
TEST_ASSERT( psa_key_id_is_volatile(
MBEDTLS_SVC_KEY_ID_GET_KEY_ID( returned_key_id ) ) );
/*
* Check that we can export all ( PSA_KEY_SLOT_COUNT + 1 ) keys,
* that they have the expected value and destroy them. In that process,
* the description of the persistent key that was evicted from the RAM
* slots when creating the last key is restored in a RAM slot to export
* its value.
*/
for( i = 0; i <= PSA_KEY_SLOT_COUNT; i++ )
{
if( i < PSA_KEY_SLOT_COUNT )
key = mbedtls_svc_key_id_make( i, i + 1 );
else
key = returned_key_id;
PSA_ASSERT( psa_export_key( key,
exported, sizeof( exported ),
&exported_length ) );
ASSERT_COMPARE( exported, exported_length,
(uint8_t *) &i, sizeof( i ) );
PSA_ASSERT( psa_destroy_key( key ) );
}
exit:
PSA_DONE( );
}
/* END_CASE */
/* BEGIN_CASE depends_on:MBEDTLS_PSA_CRYPTO_STORAGE_C */
void non_reusable_key_slots_integrity_in_case_of_key_slot_starvation( )
{
psa_status_t status;
size_t i;
psa_key_attributes_t attributes = PSA_KEY_ATTRIBUTES_INIT;
uint8_t exported[sizeof( size_t )];
size_t exported_length;
mbedtls_svc_key_id_t persistent_key = MBEDTLS_SVC_KEY_ID_INIT;
mbedtls_svc_key_id_t persistent_key2 = MBEDTLS_SVC_KEY_ID_INIT;
mbedtls_svc_key_id_t returned_key_id = MBEDTLS_SVC_KEY_ID_INIT;
mbedtls_svc_key_id_t *keys = NULL;
TEST_ASSERT( PSA_KEY_SLOT_COUNT >= 1 );
ASSERT_ALLOC( keys, PSA_KEY_SLOT_COUNT );
PSA_ASSERT( psa_crypto_init( ) );
psa_set_key_usage_flags( &attributes,
PSA_KEY_USAGE_EXPORT | PSA_KEY_USAGE_COPY );
psa_set_key_algorithm( &attributes, 0 );
psa_set_key_type( &attributes, PSA_KEY_TYPE_RAW_DATA );
/*
* Create a persistent key
*/
persistent_key = mbedtls_svc_key_id_make( 0x100, 0x205 );
psa_set_key_id( &attributes, persistent_key );
PSA_ASSERT( psa_import_key( &attributes,
(uint8_t *) &persistent_key,
sizeof( persistent_key ),
&returned_key_id ) );
TEST_ASSERT( mbedtls_svc_key_id_equal( returned_key_id, persistent_key ) );
/*
* Create PSA_KEY_SLOT_COUNT volatile keys
*/
psa_set_key_lifetime( &attributes, PSA_KEY_LIFETIME_VOLATILE );
for( i = 0; i < PSA_KEY_SLOT_COUNT; i++ )
{
PSA_ASSERT( psa_import_key( &attributes,
(uint8_t *) &i, sizeof( i ),
&keys[i]) );
}
psa_reset_key_attributes( &attributes );
/*
* Check that we cannot access the persistent key as all slots are
* occupied by volatile keys and the implementation needs to load the
* persistent key description in a slot to be able to access it.
*/
status = psa_get_key_attributes( persistent_key, &attributes );
TEST_EQUAL( status, PSA_ERROR_INSUFFICIENT_MEMORY );
/*
* Check we can export the volatile key created last and that it has the
* expected value. Then, destroy it.
*/
PSA_ASSERT( psa_export_key( keys[PSA_KEY_SLOT_COUNT - 1],
exported, sizeof( exported ),
&exported_length ) );
i = PSA_KEY_SLOT_COUNT - 1;
ASSERT_COMPARE( exported, exported_length, (uint8_t *) &i, sizeof( i ) );
PSA_ASSERT( psa_destroy_key( keys[PSA_KEY_SLOT_COUNT - 1] ) );
/*
* Check that we can now access the persistent key again.
*/
PSA_ASSERT( psa_get_key_attributes( persistent_key, &attributes ) );
TEST_ASSERT( mbedtls_svc_key_id_equal( attributes.core.id,
persistent_key ) );
/*
* Check that we cannot copy the persistent key as all slots are occupied
* by the persistent key and the volatile keys and the slot containing the
* persistent key cannot be reclaimed as it contains the key to copy.
*/
persistent_key2 = mbedtls_svc_key_id_make( 0x100, 0x204 );
psa_set_key_id( &attributes, persistent_key2 );
status = psa_copy_key( persistent_key, &attributes, &returned_key_id );
TEST_EQUAL( status, PSA_ERROR_INSUFFICIENT_MEMORY );
/*
* Check we can export the remaining volatile keys and that they have the
* expected values.
*/
for( i = 0; i < ( PSA_KEY_SLOT_COUNT - 1 ); i++ )
{
PSA_ASSERT( psa_export_key( keys[i],
exported, sizeof( exported ),
&exported_length ) );
ASSERT_COMPARE( exported, exported_length,
(uint8_t *) &i, sizeof( i ) );
PSA_ASSERT( psa_destroy_key( keys[i] ) );
}
/*
* Check we can export the persistent key and that it have the expected
* value.
*/
PSA_ASSERT( psa_export_key( persistent_key, exported, sizeof( exported ),
&exported_length ) );
ASSERT_COMPARE( exported, exported_length,
(uint8_t *) &persistent_key, sizeof( persistent_key ) );
exit:
/*
* Key attributes may have been returned by psa_get_key_attributes()
* thus reset them as required.
*/
psa_reset_key_attributes( &attributes );
psa_destroy_key( persistent_key );
PSA_DONE( );
mbedtls_free( keys );
}
/* END_CASE */
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