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mbedtls/tests/suites/test_suite_psa_crypto_slot_management.function
Jaeden Amero 70261c513a psa: Add initializers for key policies 
Add new initializers for key policies and use them in our docs, example
programs, tests, and library code. Prefer using the macro initializers
due to their straightforwardness.
2019-01-08 14:28:04 +00:00

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/* BEGIN_HEADER */
#include <stdint.h>
#if defined(MBEDTLS_PSA_CRYPTO_SPM)
#include "spm/psa_defs.h"
#endif
#include "psa/crypto.h"
#include "psa_crypto_storage.h"
typedef enum
{
CLOSE_BY_CLOSE,
CLOSE_BY_DESTROY,
CLOSE_BY_SHUTDOWN,
} close_method_t;
typedef enum
{
KEEP_OPEN,
CLOSE_BEFORE,
CLOSE_AFTER,
} reopen_policy_t;
/* All test functions that create persistent keys must call
* `TEST_MAX_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)
/* There is no API to purge all keys. For this test suite, require that
* all key IDs be less than a certain maximum, or a well-known value
* which corresponds to a file that does not contain a key. */
#define MAX_KEY_ID_FOR_TEST 32
#define KEY_ID_IS_WELL_KNOWN( key_id ) \
( ( key_id ) == PSA_CRYPTO_ITS_RANDOM_SEED_UID )
#define TEST_MAX_KEY_ID( key_id ) \
TEST_ASSERT( ( key_id ) <= MAX_KEY_ID_FOR_TEST || \
KEY_ID_IS_WELL_KNOWN( key_id ) )
void psa_purge_key_storage( void )
{
psa_key_id_t i;
/* The tests may have potentially created key ids from 1 to
* MAX_KEY_ID_FOR_TEST. In addition, run the destroy function on key id
* 0, which file-based storage uses as a temporary file. */
for( i = 0; i <= MAX_KEY_ID_FOR_TEST; i++ )
psa_destroy_persistent_key( i );
}
#else
#define TEST_MAX_KEY_ID( key_id ) ( (void) ( key_id ) )
#endif /* MBEDTLS_PSA_CRYPTO_STORAGE_C */
static int psa_key_policy_equal( psa_key_policy_t *p1,
psa_key_policy_t *p2 )
{
return( psa_key_policy_get_usage( p1 ) == psa_key_policy_get_usage( p2 ) &&
psa_key_policy_get_algorithm( p1 ) == psa_key_policy_get_algorithm( p2 ) );
}
/* END_HEADER */
/* BEGIN_DEPENDENCIES
* depends_on:MBEDTLS_PSA_CRYPTO_C
* END_DEPENDENCIES
*/
/* BEGIN_CASE */
void transient_slot_lifecycle( int type_arg, int max_bits_arg,
int alg_arg, int usage_arg,
data_t *key_data,
int close_method_arg )
{
psa_key_type_t type = type_arg;
size_t max_bits = max_bits_arg;
psa_algorithm_t alg = alg_arg;
psa_key_usage_t usage_flags = usage_arg;
close_method_t close_method = close_method_arg;
psa_key_type_t read_type;
psa_key_handle_t handle = 0;
psa_key_policy_t policy = PSA_KEY_POLICY_INIT;
PSA_ASSERT( psa_crypto_init( ) );
/* Get a handle and import a key. */
PSA_ASSERT( psa_allocate_key( type, max_bits, &handle ) );
TEST_ASSERT( handle != 0 );
psa_key_policy_set_usage( &policy, usage_flags, alg );
PSA_ASSERT( psa_set_key_policy( handle, &policy ) );
PSA_ASSERT( psa_import_key( handle, type, key_data->x, key_data->len ) );
PSA_ASSERT( psa_get_key_information( handle, &read_type, NULL ) );
TEST_EQUAL( read_type, type );
/* Do something that invalidates the handle. */
switch( close_method )
{
case CLOSE_BY_CLOSE:
PSA_ASSERT( psa_close_key( handle ) );
break;
case CLOSE_BY_DESTROY:
PSA_ASSERT( psa_destroy_key( handle ) );
break;
case CLOSE_BY_SHUTDOWN:
mbedtls_psa_crypto_free( );
PSA_ASSERT( psa_crypto_init( ) );
break;
}
/* Test that the handle is now invalid. */
TEST_EQUAL( psa_get_key_information( handle, &read_type, NULL ),
PSA_ERROR_INVALID_HANDLE );
TEST_EQUAL( psa_close_key( handle ), PSA_ERROR_INVALID_HANDLE );
exit:
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE depends_on:MBEDTLS_PSA_CRYPTO_STORAGE_C */
void persistent_slot_lifecycle( int lifetime_arg, int id_arg,
int type_arg, int max_bits_arg,
int alg_arg, int usage_arg,
data_t *key_data,
int close_method_arg )
{
psa_key_lifetime_t lifetime = lifetime_arg;
psa_key_id_t id = id_arg;
psa_key_type_t type = type_arg;
size_t max_bits = max_bits_arg;
psa_algorithm_t alg = alg_arg;
psa_key_usage_t usage_flags = usage_arg;
close_method_t close_method = close_method_arg;
psa_key_type_t read_type;
psa_key_handle_t handle = 0;
psa_key_policy_t policy = PSA_KEY_POLICY_INIT;
TEST_MAX_KEY_ID( id );
PSA_ASSERT( psa_crypto_init( ) );
/* Get a handle and import a key. */
PSA_ASSERT( psa_create_key( lifetime, id, type, max_bits, &handle ) );
TEST_ASSERT( handle != 0 );
psa_key_policy_set_usage( &policy, usage_flags, alg );
PSA_ASSERT( psa_set_key_policy( handle, &policy ) );
PSA_ASSERT( psa_import_key( handle, type, key_data->x, key_data->len ) );
PSA_ASSERT( psa_get_key_information( handle, &read_type, NULL ) );
TEST_EQUAL( read_type, type );
/* Close the key and reopen it. */
PSA_ASSERT( psa_close_key( handle ) );
PSA_ASSERT( psa_open_key( lifetime, id, &handle ) );
PSA_ASSERT( psa_get_key_information( handle, &read_type, NULL ) );
TEST_EQUAL( read_type, type );
/* Do something that invalidates the handle. */
switch( close_method )
{
case CLOSE_BY_CLOSE:
PSA_ASSERT( psa_close_key( handle ) );
break;
case CLOSE_BY_DESTROY:
PSA_ASSERT( psa_destroy_key( handle ) );
break;
case CLOSE_BY_SHUTDOWN:
mbedtls_psa_crypto_free( );
PSA_ASSERT( psa_crypto_init( ) );
break;
}
/* Test that the handle is now invalid. */
TEST_EQUAL( psa_get_key_information( handle, &read_type, NULL ),
PSA_ERROR_INVALID_HANDLE );
TEST_EQUAL( psa_close_key( handle ), PSA_ERROR_INVALID_HANDLE );
/* Try to reopen the key. If we destroyed it, check that it doesn't
* exist, otherwise check that it still exists. */
switch( close_method )
{
case CLOSE_BY_CLOSE:
case CLOSE_BY_SHUTDOWN:
PSA_ASSERT( psa_open_key( lifetime, id, &handle ) );
PSA_ASSERT( psa_get_key_information( handle, &read_type, NULL ) );
TEST_EQUAL( read_type, type );
break;
case CLOSE_BY_DESTROY:
TEST_EQUAL( psa_open_key( lifetime, id, &handle ),
PSA_ERROR_EMPTY_SLOT );
break;
}
exit:
mbedtls_psa_crypto_free( );
psa_purge_key_storage( );
}
/* END_CASE */
/* BEGIN_CASE depends_on:MBEDTLS_PSA_CRYPTO_STORAGE_C */
void create_existent( int lifetime_arg, int id_arg,
int new_type_arg,
int reopen_policy_arg )
{
psa_key_lifetime_t lifetime = lifetime_arg;
psa_key_id_t id = id_arg;
psa_key_handle_t handle1 = 0, handle2 = 0;
psa_key_policy_t policy1 = PSA_KEY_POLICY_INIT;
psa_key_policy_t read_policy = PSA_KEY_POLICY_INIT;
psa_key_type_t type1 = PSA_KEY_TYPE_RAW_DATA;
psa_key_type_t type2 = new_type_arg;
psa_key_type_t read_type;
const uint8_t material1[16] = "test material #1";
size_t bits1 = PSA_BYTES_TO_BITS( sizeof( material1 ) );
size_t read_bits;
uint8_t reexported[sizeof( material1 )];
size_t reexported_length;
reopen_policy_t reopen_policy = reopen_policy_arg;
TEST_MAX_KEY_ID( id );
PSA_ASSERT( psa_crypto_init( ) );
/* Create a key. */
PSA_ASSERT( psa_create_key( lifetime, id, type1, bits1, &handle1 ) );
TEST_ASSERT( handle1 != 0 );
psa_key_policy_set_usage( &policy1, PSA_KEY_USAGE_EXPORT, 0 );
PSA_ASSERT( psa_set_key_policy( handle1, &policy1 ) );
PSA_ASSERT( psa_import_key( handle1, type1,
material1, sizeof( material1 ) ) );
if( reopen_policy == CLOSE_BEFORE )
PSA_ASSERT( psa_close_key( handle1 ) );
/* Attempt to create a new key in the same slot. */
TEST_EQUAL( psa_create_key( lifetime, id, type2, bits1, &handle2 ),
PSA_ERROR_OCCUPIED_SLOT );
TEST_EQUAL( handle2, 0 );
if( reopen_policy == CLOSE_AFTER )
PSA_ASSERT( psa_close_key( handle1 ) );
if( reopen_policy == CLOSE_BEFORE || reopen_policy == CLOSE_AFTER )
PSA_ASSERT( psa_open_key( lifetime, id, &handle1 ) );
/* Check that the original key hasn't changed. */
PSA_ASSERT( psa_get_key_policy( handle1, &read_policy ) );
TEST_ASSERT( psa_key_policy_equal( &read_policy, &policy1 ) );
PSA_ASSERT( psa_get_key_information( handle1, &read_type, &read_bits ) );
TEST_EQUAL( read_type, type1 );
TEST_EQUAL( read_bits, bits1 );
PSA_ASSERT( psa_export_key( handle1,
reexported, sizeof( reexported ),
&reexported_length ) );
ASSERT_COMPARE( material1, sizeof( material1 ),
reexported, reexported_length );
exit:
mbedtls_psa_crypto_free( );
psa_purge_key_storage( );
}
/* END_CASE */
/* BEGIN_CASE */
void open_fail( int lifetime_arg, int id_arg,
int expected_status_arg )
{
psa_key_lifetime_t lifetime = lifetime_arg;
psa_key_id_t id = id_arg;
psa_status_t expected_status = expected_status_arg;
psa_key_handle_t handle = 0xdead;
PSA_ASSERT( psa_crypto_init( ) );
TEST_EQUAL( psa_open_key( lifetime, id, &handle ), expected_status );
TEST_EQUAL( handle, 0 );
exit:
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE */
void create_fail( int lifetime_arg, int id_arg,
int type_arg, int max_bits_arg,
int expected_status_arg )
{
psa_key_lifetime_t lifetime = lifetime_arg;
psa_key_id_t id = id_arg;
psa_key_type_t type = type_arg;
size_t max_bits = max_bits_arg;
psa_status_t expected_status = expected_status_arg;
psa_key_handle_t handle = 0xdead;
TEST_MAX_KEY_ID( id );
PSA_ASSERT( psa_crypto_init( ) );
TEST_EQUAL( psa_create_key( lifetime, id, type, max_bits, &handle ),
expected_status );
TEST_EQUAL( handle, 0 );
exit:
mbedtls_psa_crypto_free( );
#if defined(MBEDTLS_PSA_CRYPTO_STORAGE_C)
psa_purge_key_storage( );
#endif
}
/* END_CASE */
/* BEGIN_CASE */
void invalid_handle( )
{
psa_key_handle_t handle1 = 0;
psa_key_policy_t policy = PSA_KEY_POLICY_INIT;
psa_key_type_t read_type;
size_t read_bits;
uint8_t material[1] = "a";
PSA_ASSERT( psa_crypto_init( ) );
/* Allocate a handle and store a key in it. */
PSA_ASSERT( psa_allocate_key( PSA_KEY_TYPE_RAW_DATA, 1, &handle1 ) );
TEST_ASSERT( handle1 != 0 );
psa_key_policy_set_usage( &policy, 0, 0 );
PSA_ASSERT( psa_set_key_policy( handle1, &policy ) );
PSA_ASSERT( psa_import_key( handle1, PSA_KEY_TYPE_RAW_DATA,
material, sizeof( material ) ) );
/* Attempt to close and destroy some invalid handles. */
TEST_EQUAL( psa_close_key( 0 ), PSA_ERROR_INVALID_HANDLE );
TEST_EQUAL( psa_close_key( handle1 - 1 ), PSA_ERROR_INVALID_HANDLE );
TEST_EQUAL( psa_close_key( handle1 + 1 ), PSA_ERROR_INVALID_HANDLE );
TEST_EQUAL( psa_destroy_key( 0 ), PSA_ERROR_INVALID_HANDLE );
TEST_EQUAL( psa_destroy_key( handle1 - 1 ), PSA_ERROR_INVALID_HANDLE );
TEST_EQUAL( psa_destroy_key( handle1 + 1 ), PSA_ERROR_INVALID_HANDLE );
/* After all this, check that the original handle is intact. */
PSA_ASSERT( psa_get_key_information( handle1, &read_type, &read_bits ) );
TEST_EQUAL( read_type, PSA_KEY_TYPE_RAW_DATA );
TEST_EQUAL( read_bits, PSA_BYTES_TO_BITS( sizeof( material ) ) );
PSA_ASSERT( psa_close_key( handle1 ) );
exit:
mbedtls_psa_crypto_free( );
}
/* END_CASE */
/* BEGIN_CASE */
void many_transient_handles( int max_handles_arg )
{
psa_key_handle_t *handles = NULL;
size_t max_handles = max_handles_arg;
size_t i, j;
psa_status_t status;
psa_key_policy_t policy = PSA_KEY_POLICY_INIT;
uint8_t exported[sizeof( size_t )];
size_t exported_length;
size_t max_bits = PSA_BITS_TO_BYTES( sizeof( exported ) );
ASSERT_ALLOC( handles, max_handles );
PSA_ASSERT( psa_crypto_init( ) );
psa_key_policy_set_usage( &policy, PSA_KEY_USAGE_EXPORT, 0 );
for( i = 0; i < max_handles; i++ )
{
status = psa_allocate_key( PSA_KEY_TYPE_RAW_DATA, max_bits,
&handles[i] );
if( status == PSA_ERROR_INSUFFICIENT_MEMORY )
break;
PSA_ASSERT( status );
TEST_ASSERT( handles[i] != 0 );
for( j = 0; j < i; j++ )
TEST_ASSERT( handles[i] != handles[j] );
PSA_ASSERT( psa_set_key_policy( handles[i], &policy ) );
PSA_ASSERT( psa_import_key( handles[i], PSA_KEY_TYPE_RAW_DATA,
(uint8_t *) &i, sizeof( i ) ) );
}
max_handles = i;
for( i = 1; i < max_handles; i++ )
{
PSA_ASSERT( psa_close_key( handles[i - 1] ) );
PSA_ASSERT( psa_export_key( handles[i],
exported, sizeof( exported ),
&exported_length ) );
ASSERT_COMPARE( exported, exported_length,
(uint8_t *) &i, sizeof( i ) );
}
PSA_ASSERT( psa_close_key( handles[i - 1] ) );
exit:
mbedtls_psa_crypto_free( );
mbedtls_free( handles );
}
/* END_CASE */
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