mbedtls/tests/suites/test_suite_psa_crypto.function

/* BEGIN_HEADER */
#include "psa/crypto.h"

#include "mbedtls/md.h"
/* END_HEADER */

/* BEGIN_DEPENDENCIES
 * depends_on:MBEDTLS_PSA_CRYPTO_C
 * END_DEPENDENCIES
 */

/* BEGIN_CASE */
void init_deinit()
{
    psa_status_t status;
    int i;
    for( i = 0; i <= 1; i++ )
    {
        status = psa_crypto_init( );
        TEST_ASSERT( status == PSA_SUCCESS );
        status = psa_crypto_init( );
        TEST_ASSERT( status == PSA_SUCCESS );
        mbedtls_psa_crypto_free( );
    }
}
/* END_CASE */

/* BEGIN_CASE */
void import( char *hex, int type, int expected_status )
{
    int slot = 1;
    psa_status_t status;
    unsigned char *data = NULL;
    size_t data_size;

    data = unhexify_alloc( hex, &data_size );
    TEST_ASSERT( data != NULL );
    TEST_ASSERT( psa_crypto_init( ) == PSA_SUCCESS );

    status = psa_import_key( slot, type, data, data_size );
    TEST_ASSERT( status == (psa_status_t) expected_status );
    if( status == PSA_SUCCESS )
        TEST_ASSERT( psa_destroy_key( slot ) == PSA_SUCCESS );

exit:
    mbedtls_free( data );
    mbedtls_psa_crypto_free( );
}
/* END_CASE */

/* BEGIN_CASE */
void import_export( char *hex, int type_arg,
                    int expected_bits,
                    int export_size_delta,
                    int expected_export_status,
                    int canonical_input )
{
    int slot = 1;
    int slot2 = slot + 1;
    psa_key_type_t type = type_arg;
    psa_status_t status;
    unsigned char *data = NULL;
    unsigned char *exported = NULL;
    unsigned char *reexported = NULL;
    size_t data_size;
    size_t export_size;
    size_t exported_length;
    size_t reexported_length;
    psa_key_type_t got_type;
    size_t got_bits;
    psa_key_policy_t policy = {0};

    data = unhexify_alloc( hex, &data_size );
    TEST_ASSERT( data != NULL );
    export_size = (ssize_t) data_size + export_size_delta;
    exported = mbedtls_calloc( 1, export_size );
    TEST_ASSERT( exported != NULL );
    if( ! canonical_input )
    {
        reexported = mbedtls_calloc( 1, export_size );
        TEST_ASSERT( reexported != NULL );
    }
    TEST_ASSERT( psa_crypto_init( ) == PSA_SUCCESS );

    psa_key_policy_init( &policy );

    psa_key_policy_set_usage( &policy, PSA_KEY_USAGE_EXPORT, 
                              PSA_ALG_VENDOR_FLAG );

    TEST_ASSERT( psa_set_key_policy( slot, &policy ) == PSA_SUCCESS );

    /* Import the key */
    TEST_ASSERT( psa_import_key( slot, type,
                                 data, data_size ) == PSA_SUCCESS );

    /* Test the key information */
    TEST_ASSERT( psa_get_key_information( slot,
                                          &got_type, &got_bits ) ==
                 PSA_SUCCESS );
    TEST_ASSERT( got_type == type );
    TEST_ASSERT( got_bits == (size_t) expected_bits );

    /* Export the key */
    status = psa_export_key( slot,
                             exported, export_size,
                             &exported_length );
    TEST_ASSERT( status == (psa_status_t) expected_export_status );
    if( status != PSA_SUCCESS )
        goto destroy;

    if( canonical_input )
    {
        TEST_ASSERT( exported_length == data_size );
        TEST_ASSERT( memcmp( exported, data, data_size ) == 0 );
    }
    else
    {
        TEST_ASSERT( psa_set_key_policy( slot2, &policy ) == PSA_SUCCESS );

        TEST_ASSERT( psa_import_key( slot2, type,
                                     exported, export_size ) ==
                     PSA_SUCCESS );
        TEST_ASSERT( psa_export_key( slot2,
                                     reexported, export_size,
                                     &reexported_length ) ==
                     PSA_SUCCESS );
        TEST_ASSERT( reexported_length == exported_length );
        TEST_ASSERT( memcmp( reexported, exported,
                             exported_length ) == 0 );
    }

destroy:
    /* Destroy the key */
    TEST_ASSERT( psa_destroy_key( slot ) == PSA_SUCCESS );
    TEST_ASSERT( psa_get_key_information(
                     slot, NULL, NULL ) == PSA_ERROR_EMPTY_SLOT );

exit:
    mbedtls_free( data );
    mbedtls_psa_crypto_free( );
}
/* END_CASE */

/* BEGIN_CASE */
void hash_finish( int alg_arg, char *input_hex, char *hash_hex )
{
    psa_algorithm_t alg = alg_arg;
    unsigned char *input = NULL;
    size_t input_size;
    unsigned char expected_hash[MBEDTLS_MD_MAX_SIZE];
    size_t expected_hash_length;
    unsigned char actual_hash[MBEDTLS_MD_MAX_SIZE];
    size_t actual_hash_length;
    psa_hash_operation_t operation;

    input = unhexify_alloc( input_hex, &input_size );
    TEST_ASSERT( input != NULL );
    expected_hash_length = unhexify( expected_hash, hash_hex );

    TEST_ASSERT( psa_crypto_init( ) == PSA_SUCCESS );

    TEST_ASSERT( psa_hash_start( &operation, alg ) == PSA_SUCCESS );
    TEST_ASSERT( psa_hash_update( &operation,
                                  input, input_size ) == PSA_SUCCESS );
    TEST_ASSERT( psa_hash_finish( &operation,
                                  actual_hash, sizeof( actual_hash ),
                                  &actual_hash_length ) == PSA_SUCCESS );
    TEST_ASSERT( actual_hash_length == expected_hash_length );
    TEST_ASSERT( memcmp( expected_hash, actual_hash,
                         expected_hash_length ) == 0 );

exit:
    mbedtls_free( input );
    mbedtls_psa_crypto_free( );
}
/* END_CASE */

/* BEGIN_CASE */
void hash_verify( int alg_arg, char *input_hex, char *hash_hex )
{
    psa_algorithm_t alg = alg_arg;
    unsigned char *input = NULL;
    size_t input_size;
    unsigned char expected_hash[MBEDTLS_MD_MAX_SIZE];
    size_t expected_hash_length;
    psa_hash_operation_t operation;

    input = unhexify_alloc( input_hex, &input_size );
    TEST_ASSERT( input != NULL );
    expected_hash_length = unhexify( expected_hash, hash_hex );

    TEST_ASSERT( psa_crypto_init( ) == PSA_SUCCESS );

    TEST_ASSERT( psa_hash_start( &operation, alg ) == PSA_SUCCESS );
    TEST_ASSERT( psa_hash_update( &operation,
                                  input, input_size ) == PSA_SUCCESS );
    TEST_ASSERT( psa_hash_verify( &operation,
                                  expected_hash,
                                  expected_hash_length ) == PSA_SUCCESS );

exit:
    mbedtls_free( input );
    mbedtls_psa_crypto_free( );
}
/* END_CASE */

/* BEGIN_CASE */
void mac_verify( int key_type_arg, char *key_hex,
                 int alg_arg, char *iv_hex,
                 char *input_hex, char *mac_hex )
{
    int key_slot = 1;
    psa_key_type_t key_type = key_type_arg;
    psa_algorithm_t alg = alg_arg;
    unsigned char *key = NULL;
    size_t key_size;
    unsigned char *iv = NULL;
    size_t iv_size;
    unsigned char *input = NULL;
    size_t input_size;
    unsigned char *expected_mac = NULL;
    size_t expected_mac_size;
    psa_mac_operation_t operation;
    psa_key_policy_t policy;

    key = unhexify_alloc( key_hex, &key_size );
    TEST_ASSERT( key != NULL );
    if( iv_hex[0] != 0 )
    {
        iv = unhexify_alloc( iv_hex, &iv_size );
        TEST_ASSERT( iv != NULL );
    }
    input = unhexify_alloc( input_hex, &input_size );
    TEST_ASSERT( input != NULL );
    expected_mac = unhexify_alloc( mac_hex, &expected_mac_size );
    TEST_ASSERT( expected_mac != NULL );

    TEST_ASSERT( psa_crypto_init( ) == PSA_SUCCESS );

    psa_key_policy_init( &policy );

    psa_key_policy_set_usage( &policy, PSA_KEY_USAGE_VERIFY, alg_arg );

    TEST_ASSERT( psa_set_key_policy( key_slot, &policy ) == PSA_SUCCESS );

    TEST_ASSERT( psa_import_key( key_slot, key_type,
                                 key, key_size ) == PSA_SUCCESS );
    // TODO: support IV
    TEST_ASSERT( psa_mac_start( &operation, key_slot, alg ) == PSA_SUCCESS );
    TEST_ASSERT( psa_destroy_key( key_slot ) == PSA_SUCCESS );
    TEST_ASSERT( psa_mac_update( &operation,
                                 input, input_size ) == PSA_SUCCESS );
    TEST_ASSERT( psa_mac_verify( &operation,
                                 expected_mac,
                                 expected_mac_size ) == PSA_SUCCESS );

exit:
    mbedtls_free( key );
    mbedtls_free( iv );
    mbedtls_free( input );
    mbedtls_free( expected_mac );
    psa_destroy_key( key_slot );
    mbedtls_psa_crypto_free( );
}
/* END_CASE */

/* BEGIN_CASE */
void signature_size( int type_arg, int bits, int alg_arg, int expected_size_arg )
{
    psa_key_type_t type = type_arg;
    psa_algorithm_t alg = alg_arg;
    size_t actual_size = PSA_ASYMMETRIC_SIGN_OUTPUT_SIZE(type, bits, alg);
    TEST_ASSERT( actual_size == (size_t) expected_size_arg );
exit:
    ;
}
/* END_CASE */

/* BEGIN_CASE */
void sign_deterministic( int key_type_arg, char *key_hex,
                         int alg_arg, char *input_hex, char *output_hex )
{
    int slot = 1;
    psa_key_type_t key_type = key_type_arg;
    psa_algorithm_t alg = alg_arg;
    unsigned char *key_data = NULL;
    size_t key_size;
    size_t key_bits;
    unsigned char *input_data = NULL;
    size_t input_size;
    unsigned char *output_data = NULL;
    size_t output_size;
    unsigned char *signature = NULL;
    size_t signature_size;
    size_t signature_length = 0xdeadbeef;
    psa_key_policy_t policy = {0};

    key_data = unhexify_alloc( key_hex, &key_size );
    TEST_ASSERT( key_data != NULL );
    input_data = unhexify_alloc( input_hex, &input_size );
    TEST_ASSERT( input_data != NULL );
    output_data = unhexify_alloc( output_hex, &output_size );
    TEST_ASSERT( output_data != NULL );

    TEST_ASSERT( psa_crypto_init( ) == PSA_SUCCESS );

    psa_key_policy_init( &policy );

    psa_key_policy_set_usage( &policy, PSA_KEY_USAGE_SIGN, alg_arg );

    TEST_ASSERT( psa_set_key_policy( slot, &policy ) == PSA_SUCCESS );

    TEST_ASSERT( psa_import_key( slot, key_type,
                                 key_data, key_size ) == PSA_SUCCESS );
    TEST_ASSERT( psa_get_key_information( slot,
                                          NULL,
                                          &key_bits ) == PSA_SUCCESS );

    signature_size = PSA_ASYMMETRIC_SIGN_OUTPUT_SIZE( key_type, alg, key_bits );
    TEST_ASSERT( signature_size != 0 );
    signature = mbedtls_calloc( 1, signature_size );
    TEST_ASSERT( signature != NULL );

    TEST_ASSERT( psa_asymmetric_sign( slot, alg,
                                      input_data, input_size,
                                      NULL, 0,
                                      signature, signature_size,
                                      &signature_length ) == PSA_SUCCESS );
    TEST_ASSERT( signature_length == output_size );
    TEST_ASSERT( memcmp( signature, output_data, output_size ) == 0 );

exit:
    psa_destroy_key( slot );
    mbedtls_free( key_data );
    mbedtls_free( input_data );
    mbedtls_free( output_data );
    mbedtls_free( signature );
    mbedtls_psa_crypto_free( );
}
/* END_CASE */

/* BEGIN_CASE */
void sign_fail( int key_type_arg, char *key_hex,
                int alg_arg, char *input_hex,
                int signature_size, int expected_status_arg )
{
    int slot = 1;
    psa_key_type_t key_type = key_type_arg;
    psa_algorithm_t alg = alg_arg;
    unsigned char *key_data = NULL;
    size_t key_size;
    unsigned char *input_data = NULL;
    size_t input_size;
    psa_status_t actual_status;
    psa_status_t expected_status = expected_status_arg;
    unsigned char *signature = NULL;
    size_t signature_length = 0xdeadbeef;
    psa_key_policy_t policy = {0};

    key_data = unhexify_alloc( key_hex, &key_size );
    TEST_ASSERT( key_data != NULL );
    input_data = unhexify_alloc( input_hex, &input_size );
    TEST_ASSERT( input_data != NULL );
    signature = mbedtls_calloc( 1, signature_size );
    TEST_ASSERT( signature != NULL );

    TEST_ASSERT( psa_crypto_init( ) == PSA_SUCCESS );

    psa_key_policy_init( &policy );

    psa_key_policy_set_usage( &policy, PSA_KEY_USAGE_SIGN, alg_arg );

    TEST_ASSERT( psa_set_key_policy( slot, &policy ) == PSA_SUCCESS );

    TEST_ASSERT( psa_import_key( slot, key_type,
                                 key_data, key_size ) == PSA_SUCCESS );

    actual_status = psa_asymmetric_sign( slot, alg,
                                         input_data, input_size,
                                         NULL, 0,
                                         signature, signature_size,
                                         &signature_length );
    TEST_ASSERT( actual_status == expected_status );
    TEST_ASSERT( signature_length == 0 );

exit:
    psa_destroy_key( slot );
    mbedtls_free( key_data );
    mbedtls_free( input_data );
    mbedtls_free( signature );
    mbedtls_psa_crypto_free( );
}
/* END_CASE */

/* BEGIN_CASE */
void key_policy( int usage_arg, int alg_arg )
{
    int key_slot = 1;
    psa_key_type_t key_type = PSA_KEY_TYPE_AES;
    unsigned char key[32] = {0};
    psa_key_policy_t policy_set = {0};
    psa_key_policy_t policy_get = {0};
        

    memset( key, 0x2a, sizeof( key ) );
 
    TEST_ASSERT( psa_crypto_init( ) == PSA_SUCCESS );

    psa_key_policy_init(& policy_set );
    psa_key_policy_init(& policy_get );

    psa_key_policy_set_usage( &policy_set, usage_arg, alg_arg );

    TEST_ASSERT( psa_key_policy_get_usage( &policy_set ) == ( psa_key_usage_t )usage_arg );

    TEST_ASSERT( psa_key_policy_get_algorithm( &policy_set) == ( psa_algorithm_t )alg_arg );

    TEST_ASSERT( psa_set_key_policy( key_slot, &policy_set ) == PSA_SUCCESS );

    TEST_ASSERT( psa_import_key( key_slot, key_type,
                                 key, sizeof( key ) ) == PSA_SUCCESS );

    TEST_ASSERT( psa_get_key_policy( key_slot, &policy_get ) == PSA_SUCCESS );

    TEST_ASSERT( policy_get.usage == policy_set.usage );
    TEST_ASSERT( policy_get.alg == policy_set.alg );

    


exit:
    psa_destroy_key( key_slot );
    mbedtls_psa_crypto_free( );
}
/* END_CASE */

/* BEGIN_CASE */
void key_policy_fail( int usage_arg, int alg_arg, int expected_status, char *key_hex )
{
    int key_slot = 1;
    unsigned char* keypair = NULL;
    size_t key_size = 0;
    size_t signature_length = 0;
    psa_key_policy_t policy = {0};
    int actual_status = PSA_SUCCESS;
 
    TEST_ASSERT( psa_crypto_init( ) == PSA_SUCCESS );

    psa_key_policy_init( &policy );

    psa_key_policy_set_usage( &policy, usage_arg, alg_arg );

    TEST_ASSERT( psa_set_key_policy( key_slot, &policy ) == PSA_SUCCESS );

    if( usage_arg & PSA_KEY_USAGE_EXPORT )
    {
        keypair = unhexify_alloc( key_hex, &key_size );
        TEST_ASSERT( keypair != NULL );
        TEST_ASSERT( psa_import_key( key_slot, PSA_KEY_TYPE_RSA_KEYPAIR,
                                keypair, key_size ) == PSA_SUCCESS );
        actual_status = psa_asymmetric_sign( key_slot, 
                        ( psa_algorithm_t )alg_arg, NULL, 0, NULL, 0, 
                        NULL, 0, &signature_length );
    }
    
    if( usage_arg & PSA_KEY_USAGE_SIGN )
    {
        keypair = unhexify_alloc( key_hex, &key_size );
        TEST_ASSERT( keypair != NULL );
        TEST_ASSERT( psa_import_key( key_slot, PSA_KEY_TYPE_RSA_KEYPAIR,
                                keypair, key_size ) == PSA_SUCCESS );
        actual_status = psa_export_key( key_slot, NULL, 0, NULL );
    }

    TEST_ASSERT( actual_status == expected_status );

exit:
    psa_destroy_key( key_slot );
    mbedtls_free( keypair );
    mbedtls_psa_crypto_free( );
}
/* END_CASE */

/* BEGIN_CASE */
void key_lifetime( int lifetime_arg )
{
    int key_slot = 1;
    psa_key_type_t key_type = PSA_ALG_CBC_BASE;
    unsigned char key[32] = {0};
    psa_key_lifetime_t lifetime_set = (psa_key_lifetime_t) lifetime_arg;
    psa_key_lifetime_t lifetime_get;
    memset( key, 0x2a, sizeof( key ) );
    TEST_ASSERT( psa_crypto_init( ) == PSA_SUCCESS );
    TEST_ASSERT( psa_set_key_lifetime( key_slot, 
                                 lifetime_set ) == PSA_SUCCESS );
    TEST_ASSERT( psa_import_key( key_slot, key_type,
                                 key, sizeof( key ) ) == PSA_SUCCESS );
    TEST_ASSERT( psa_get_key_lifetime( key_slot, 
                                 &lifetime_get ) == PSA_SUCCESS );
    TEST_ASSERT( lifetime_get == lifetime_set ); 
exit:
    psa_destroy_key( key_slot );
    mbedtls_psa_crypto_free( );
}
/* END_CASE */

/* BEGIN_CASE */
void key_lifetime_set_fail( int key_slot_arg, int lifetime_arg, int expected_status_arg )
{
    int key_slot = 1;
    psa_key_lifetime_t lifetime_set = (psa_key_lifetime_t) lifetime_arg;
    psa_status_t actual_status;
    psa_status_t expected_status = expected_status_arg;

    TEST_ASSERT( psa_crypto_init( ) == PSA_SUCCESS );

    actual_status = psa_set_key_lifetime( key_slot_arg, lifetime_set );

    if( actual_status == PSA_SUCCESS )
        actual_status = psa_set_key_lifetime( key_slot_arg, lifetime_set );
    
    TEST_ASSERT( expected_status == actual_status );

exit:
    psa_destroy_key( key_slot );
    mbedtls_psa_crypto_free( );
}
/* END_CASE */

/* BEGIN_CASE */
void asymmetric_verify( int key_type_arg, char *key_hex,
                         int alg_arg, char *hash_hex, char *signature_hex )
{
    int slot = 1;
    psa_key_type_t key_type = key_type_arg;
    psa_algorithm_t alg = alg_arg;
    unsigned char *key_data = NULL;
    size_t key_size;
    unsigned char *hash_data = NULL;
    size_t hash_size;
    unsigned char *signature_data = NULL;
    size_t signature_size;
    psa_key_policy_t policy = {0};

    key_data = unhexify_alloc( key_hex, &key_size );
    TEST_ASSERT( key_data != NULL );
    hash_data = unhexify_alloc( hash_hex, &hash_size );
    TEST_ASSERT( hash_data != NULL );
    signature_data = unhexify_alloc( signature_hex, &signature_size );
    TEST_ASSERT( signature_data != NULL );

    TEST_ASSERT( psa_crypto_init( ) == PSA_SUCCESS );

    psa_key_policy_init( &policy );

    psa_key_policy_set_usage( &policy, PSA_KEY_USAGE_VERIFY, alg_arg );

    TEST_ASSERT( psa_set_key_policy( slot, &policy ) == PSA_SUCCESS );

    TEST_ASSERT( psa_import_key( slot, key_type,
                                 key_data, key_size ) == PSA_SUCCESS );

    TEST_ASSERT( psa_asymmetric_verify( slot, alg,
                                        hash_data, hash_size,
                                        NULL, 0,
                                        signature_data, signature_size ) ==
                                        PSA_SUCCESS );
exit:
    psa_destroy_key( slot );
    mbedtls_free( key_data );
    mbedtls_free( hash_data );
    mbedtls_free( signature_data );
    mbedtls_psa_crypto_free( );
}
/* END_CASE */

/* BEGIN_CASE */
void aead_encrypt_decrypt( int key_type_arg, char * key_hex,
                int alg_arg, char * input_hex,
                char * add_data, int expected_result_arg )
{
    int slot = 1;
    psa_key_type_t key_type = key_type_arg;
    psa_algorithm_t alg = alg_arg;
    unsigned char *key_data = NULL;
    size_t key_size;
    unsigned char *input_data = NULL;
    size_t input_size;
    unsigned char *output_data = NULL;
    size_t output_size = 0;
    size_t output_length = 0;
    unsigned char *output_data2 = NULL;
    size_t output_length2 = 0;
    uint8_t nonce[16];
    size_t nonce_length = 16;
    size_t tag_length = 16;
    unsigned char *additional_data = NULL;
    size_t additional_data_length = 0;
    size_t i = 0;
    psa_status_t expected_result = (psa_status_t) expected_result_arg;
    psa_key_policy_t policy = {0};


    key_data = unhexify_alloc( key_hex, &key_size );
    TEST_ASSERT( key_data != NULL );
    input_data = unhexify_alloc( input_hex, &input_size );
    TEST_ASSERT( input_data != NULL );
    additional_data = unhexify_alloc( add_data, &additional_data_length );
    TEST_ASSERT( input_data != NULL );
    output_size = input_size + tag_length;
    output_data = mbedtls_calloc( 1, output_size );
    TEST_ASSERT( output_data != NULL );
    if( alg == PSA_ALG_CCM )
    {
        nonce_length = 12;
    }

    for( ; i < nonce_length; ++i )
        nonce[i] = i;

    TEST_ASSERT( psa_crypto_init( ) == PSA_SUCCESS );

    psa_key_policy_init( &policy );

    psa_key_policy_set_usage( &policy, PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_DECRYPT , alg );

    TEST_ASSERT( psa_set_key_policy( slot, &policy ) == PSA_SUCCESS );

    TEST_ASSERT( psa_import_key( slot, key_type,
                                 key_data, key_size ) == PSA_SUCCESS );

    TEST_ASSERT( psa_aead_encrypt( slot, alg,
                               nonce, nonce_length,
                               additional_data, additional_data_length,
                               input_data, input_size, output_data,
                               output_size, &output_length ) == expected_result );

    if( PSA_SUCCESS == expected_result )
    {
        output_data2 = mbedtls_calloc( 1, output_length );
        TEST_ASSERT( output_data2 != NULL );

        TEST_ASSERT( psa_aead_decrypt( slot, alg,
                                nonce, nonce_length,
                                additional_data, additional_data_length,
                                output_data, output_length, output_data2,
                                output_length, &output_length2 ) == expected_result );
        

        TEST_ASSERT( memcmp( input_data, output_data2,
                                input_size ) == 0 );
    }
    

exit:
    psa_destroy_key( slot );
    mbedtls_free( key_data );
    mbedtls_free( input_data );
    mbedtls_free( additional_data );
    mbedtls_free( output_data );
    mbedtls_free( output_data2 );
    mbedtls_psa_crypto_free( );
}
/* END_CASE */

/* BEGIN_CASE */
void aead_encrypt( int key_type_arg, char * key_hex,
                int alg_arg, char * input_hex,
                char * add_data, char * nonce_hex,
                char * expected_result_hex )
{
    int slot = 1;
    psa_key_type_t key_type = key_type_arg;
    psa_algorithm_t alg = alg_arg;
    unsigned char *key_data = NULL;
    size_t key_size;
    unsigned char *input_data = NULL;
    size_t input_size;
    unsigned char *output_data = NULL;
    size_t output_size = 0;
    size_t output_length = 0;
    unsigned char *expected_result = NULL;
    size_t expected_result_length = 0;
    uint8_t* nonce = NULL;
    size_t nonce_length = 0;
    size_t tag_length = 16;
    unsigned char *additional_data = NULL;
    size_t additional_data_length = 0;
    psa_key_policy_t policy = {0};


    key_data = unhexify_alloc( key_hex, &key_size );
    TEST_ASSERT( key_data != NULL );
    input_data = unhexify_alloc( input_hex, &input_size );
    TEST_ASSERT( input_data != NULL );
    additional_data = unhexify_alloc( add_data, &additional_data_length );
    TEST_ASSERT( input_data != NULL );
    output_size = input_size + tag_length;
    output_data = mbedtls_calloc( 1, output_size );
    TEST_ASSERT( output_data != NULL );
    nonce = unhexify_alloc( nonce_hex, &nonce_length );
    TEST_ASSERT( nonce != NULL );
    expected_result = unhexify_alloc( expected_result_hex, &expected_result_length );
    TEST_ASSERT( expected_result != NULL );
    
    TEST_ASSERT( psa_crypto_init( ) == PSA_SUCCESS );

    psa_key_policy_init( &policy );

    psa_key_policy_set_usage( &policy, PSA_KEY_USAGE_ENCRYPT , alg );

    TEST_ASSERT( psa_set_key_policy( slot, &policy ) == PSA_SUCCESS );

    TEST_ASSERT( psa_import_key( slot, key_type,
                                 key_data, key_size ) == PSA_SUCCESS );

    TEST_ASSERT( psa_aead_encrypt( slot, alg,
                               nonce, nonce_length,
                               additional_data, additional_data_length,
                               input_data, input_size, output_data,
                               output_size, &output_length ) == PSA_SUCCESS );


    TEST_ASSERT( memcmp( output_data, expected_result,
                                output_length ) == 0 );
    

exit:
    psa_destroy_key( slot );
    mbedtls_free( key_data );
    mbedtls_free( input_data );
    mbedtls_free( additional_data );
    mbedtls_free( output_data );
    mbedtls_free( nonce );
    mbedtls_free( expected_result );
    mbedtls_psa_crypto_free( );
}
/* END_CASE */

/* BEGIN_CASE */
void aead_decrypt( int key_type_arg, char * key_hex,
                int alg_arg, char * input_hex,
                char * add_data, char * nonce_hex,
                char * expected_result_hex )
{
    int slot = 1;
    psa_key_type_t key_type = key_type_arg;
    psa_algorithm_t alg = alg_arg;
    unsigned char *key_data = NULL;
    size_t key_size;
    unsigned char *input_data = NULL;
    size_t input_size;
    unsigned char *output_data = NULL;
    size_t output_size = 0;
    size_t output_length = 0;
    unsigned char *expected_result = NULL;
    size_t expected_result_length = 0;
    uint8_t* nonce = NULL;
    size_t nonce_length = 0;
    size_t tag_length = 16;
    unsigned char *additional_data = NULL;
    size_t additional_data_length = 0;
    psa_key_policy_t policy = {0};


    key_data = unhexify_alloc( key_hex, &key_size );
    TEST_ASSERT( key_data != NULL );
    input_data = unhexify_alloc( input_hex, &input_size );
    TEST_ASSERT( input_data != NULL );
    additional_data = unhexify_alloc( add_data, &additional_data_length );
    TEST_ASSERT( input_data != NULL );
    output_size = input_size + tag_length;
    output_data = mbedtls_calloc( 1, output_size );
    TEST_ASSERT( output_data != NULL );
    nonce = unhexify_alloc( nonce_hex, &nonce_length );
    TEST_ASSERT( nonce != NULL );
    expected_result = unhexify_alloc( expected_result_hex, &expected_result_length );
    TEST_ASSERT( expected_result != NULL );
    
    TEST_ASSERT( psa_crypto_init( ) == PSA_SUCCESS );

    psa_key_policy_init( &policy );

    psa_key_policy_set_usage( &policy, PSA_KEY_USAGE_DECRYPT , alg );

    TEST_ASSERT( psa_set_key_policy( slot, &policy ) == PSA_SUCCESS );

    TEST_ASSERT( psa_import_key( slot, key_type,
                                 key_data, key_size ) == PSA_SUCCESS );

    TEST_ASSERT( psa_aead_decrypt( slot, alg,
                               nonce, nonce_length,
                               additional_data, additional_data_length,
                               input_data, input_size, output_data,
                               output_size, &output_length ) == PSA_SUCCESS );


    TEST_ASSERT( memcmp( output_data, expected_result,
                                output_length ) == 0 );
    

exit:
    psa_destroy_key( slot );
    mbedtls_free( key_data );
    mbedtls_free( input_data );
    mbedtls_free( additional_data );
    mbedtls_free( output_data );
    mbedtls_free( nonce );
    mbedtls_free( expected_result );
    mbedtls_psa_crypto_free( );
}
/* END_CASE */