mbedtls/tests/suites/test_suite_aes.function

/* BEGIN_HEADER */
#include "mbedtls/aes.h"
/* END_HEADER */

/* BEGIN_DEPENDENCIES
 * depends_on:MBEDTLS_AES_C
 * END_DEPENDENCIES
 */

/* BEGIN_CASE */
void aes_encrypt_ecb( data_t * key_str, data_t * src_str,
                      data_t * hex_dst_string, int setkey_result )
{
    unsigned char output[100];
    mbedtls_aes_context ctx;

    memset(output, 0x00, 100);

    mbedtls_aes_init( &ctx );

    TEST_ASSERT( mbedtls_aes_setkey_enc( &ctx, key_str->x, key_str->len * 8 ) == setkey_result );
    if( setkey_result == 0 )
    {
        TEST_ASSERT( mbedtls_aes_crypt_ecb( &ctx, MBEDTLS_AES_ENCRYPT, src_str->x, output ) == 0 );

        TEST_ASSERT( mbedtls_test_hexcmp( output, hex_dst_string->x, 16, hex_dst_string->len ) == 0 );
    }

exit:
    mbedtls_aes_free( &ctx );
}
/* END_CASE */

/* BEGIN_CASE */
void aes_decrypt_ecb( data_t * key_str, data_t * src_str,
                      data_t * hex_dst_string, int setkey_result )
{
    unsigned char output[100];
    mbedtls_aes_context ctx;

    memset(output, 0x00, 100);

    mbedtls_aes_init( &ctx );

    TEST_ASSERT( mbedtls_aes_setkey_dec( &ctx, key_str->x, key_str->len * 8 ) == setkey_result );
    if( setkey_result == 0 )
    {
        TEST_ASSERT( mbedtls_aes_crypt_ecb( &ctx, MBEDTLS_AES_DECRYPT, src_str->x, output ) == 0 );

        TEST_ASSERT( mbedtls_test_hexcmp( output, hex_dst_string->x, 16, hex_dst_string->len ) == 0 );
    }

exit:
    mbedtls_aes_free( &ctx );
}
/* END_CASE */

/* BEGIN_CASE depends_on:MBEDTLS_CIPHER_MODE_CBC */
void aes_encrypt_cbc( data_t * key_str, data_t * iv_str,
                      data_t * src_str, data_t * hex_dst_string,
                      int cbc_result )
{
    unsigned char output[100];
    mbedtls_aes_context ctx;

    memset(output, 0x00, 100);

    mbedtls_aes_init( &ctx );

    mbedtls_aes_setkey_enc( &ctx, key_str->x, key_str->len * 8 );
    TEST_ASSERT( mbedtls_aes_crypt_cbc( &ctx, MBEDTLS_AES_ENCRYPT, src_str->len, iv_str->x, src_str->x, output ) == cbc_result );
    if( cbc_result == 0 )
    {

        TEST_ASSERT( mbedtls_test_hexcmp( output, hex_dst_string->x, src_str->len, hex_dst_string->len ) == 0 );
    }

exit:
    mbedtls_aes_free( &ctx );
}
/* END_CASE */

/* BEGIN_CASE depends_on:MBEDTLS_CIPHER_MODE_CBC */
void aes_decrypt_cbc( data_t * key_str, data_t * iv_str,
                      data_t * src_str, data_t * hex_dst_string,
                      int cbc_result )
{
    unsigned char output[100];
    mbedtls_aes_context ctx;

    memset(output, 0x00, 100);
    mbedtls_aes_init( &ctx );

    mbedtls_aes_setkey_dec( &ctx, key_str->x, key_str->len * 8 );
    TEST_ASSERT( mbedtls_aes_crypt_cbc( &ctx, MBEDTLS_AES_DECRYPT, src_str->len, iv_str->x, src_str->x, output ) == cbc_result );
    if( cbc_result == 0)
    {

        TEST_ASSERT( mbedtls_test_hexcmp( output, hex_dst_string->x, src_str->len, hex_dst_string->len ) == 0 );
    }

exit:
    mbedtls_aes_free( &ctx );
}
/* END_CASE */

/* BEGIN_CASE depends_on:MBEDTLS_CIPHER_MODE_XTS */
void aes_encrypt_xts( char *hex_key_string, char *hex_data_unit_string,
                      char *hex_src_string, char *hex_dst_string )
{
    enum { AES_BLOCK_SIZE = 16 };
    unsigned char *data_unit = NULL;
    unsigned char *key = NULL;
    unsigned char *src = NULL;
    unsigned char *dst = NULL;
    unsigned char *output = NULL;
    mbedtls_aes_xts_context ctx;
    size_t key_len, src_len, dst_len, data_unit_len;

    mbedtls_aes_xts_init( &ctx );

    data_unit = mbedtls_test_unhexify_alloc( hex_data_unit_string,
                                             &data_unit_len );
    TEST_ASSERT( data_unit_len == AES_BLOCK_SIZE );

    key = mbedtls_test_unhexify_alloc( hex_key_string, &key_len );
    TEST_ASSERT( key_len % 2 == 0 );

    src = mbedtls_test_unhexify_alloc( hex_src_string, &src_len );
    dst = mbedtls_test_unhexify_alloc( hex_dst_string, &dst_len );
    TEST_ASSERT( src_len == dst_len );

    output = mbedtls_test_zero_alloc( dst_len );

    TEST_ASSERT( mbedtls_aes_xts_setkey_enc( &ctx, key, key_len * 8 ) == 0 );
    TEST_ASSERT( mbedtls_aes_crypt_xts( &ctx, MBEDTLS_AES_ENCRYPT, src_len,
                                        data_unit, src, output ) == 0 );

    TEST_ASSERT( memcmp( output, dst, dst_len ) == 0 );

exit:
    mbedtls_aes_xts_free( &ctx );
    mbedtls_free( data_unit );
    mbedtls_free( key );
    mbedtls_free( src );
    mbedtls_free( dst );
    mbedtls_free( output );
}
/* END_CASE */

/* BEGIN_CASE depends_on:MBEDTLS_CIPHER_MODE_XTS */
void aes_decrypt_xts( char *hex_key_string, char *hex_data_unit_string,
                      char *hex_dst_string, char *hex_src_string )
{
    enum { AES_BLOCK_SIZE = 16 };
    unsigned char *data_unit = NULL;
    unsigned char *key = NULL;
    unsigned char *src = NULL;
    unsigned char *dst = NULL;
    unsigned char *output = NULL;
    mbedtls_aes_xts_context ctx;
    size_t key_len, src_len, dst_len, data_unit_len;

    mbedtls_aes_xts_init( &ctx );

    data_unit = mbedtls_test_unhexify_alloc( hex_data_unit_string,
                                             &data_unit_len );
    TEST_ASSERT( data_unit_len == AES_BLOCK_SIZE );

    key = mbedtls_test_unhexify_alloc( hex_key_string, &key_len );
    TEST_ASSERT( key_len % 2 == 0 );

    src = mbedtls_test_unhexify_alloc( hex_src_string, &src_len );
    dst = mbedtls_test_unhexify_alloc( hex_dst_string, &dst_len );
    TEST_ASSERT( src_len == dst_len );

    output = mbedtls_test_zero_alloc( dst_len );

    TEST_ASSERT( mbedtls_aes_xts_setkey_dec( &ctx, key, key_len * 8 ) == 0 );
    TEST_ASSERT( mbedtls_aes_crypt_xts( &ctx, MBEDTLS_AES_DECRYPT, src_len,
                                        data_unit, src, output ) == 0 );

    TEST_ASSERT( memcmp( output, dst, dst_len ) == 0 );

exit:
    mbedtls_aes_xts_free( &ctx );
    mbedtls_free( data_unit );
    mbedtls_free( key );
    mbedtls_free( src );
    mbedtls_free( dst );
    mbedtls_free( output );
}
/* END_CASE */

/* BEGIN_CASE depends_on:MBEDTLS_CIPHER_MODE_XTS */
void aes_crypt_xts_size( int size, int retval )
{
    mbedtls_aes_xts_context ctx;
    const unsigned char src[16] = { 0 };
    unsigned char output[16];
    unsigned char data_unit[16];
    size_t length = size;

    mbedtls_aes_xts_init( &ctx );
    memset( data_unit, 0x00, sizeof( data_unit ) );


    /* Valid pointers are passed for builds with MBEDTLS_CHECK_PARAMS, as
     * otherwise we wouldn't get to the size check we're interested in. */
    TEST_ASSERT( mbedtls_aes_crypt_xts( &ctx, MBEDTLS_AES_ENCRYPT, length, data_unit, src, output ) == retval );
}
/* END_CASE */

/* BEGIN_CASE depends_on:MBEDTLS_CIPHER_MODE_XTS */
void aes_crypt_xts_keysize( int size, int retval )
{
    mbedtls_aes_xts_context ctx;
    const unsigned char key[] = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06 };
    size_t key_len = size;

    mbedtls_aes_xts_init( &ctx );

    TEST_ASSERT( mbedtls_aes_xts_setkey_enc( &ctx, key, key_len * 8 ) == retval );
    TEST_ASSERT( mbedtls_aes_xts_setkey_dec( &ctx, key, key_len * 8 ) == retval );
exit:
    mbedtls_aes_xts_free( &ctx );
}
/* END_CASE */


/* BEGIN_CASE depends_on:MBEDTLS_CIPHER_MODE_CFB */
void aes_encrypt_cfb128( data_t * key_str, data_t * iv_str,
                         data_t * src_str, data_t * hex_dst_string )
{
    unsigned char output[100];
    mbedtls_aes_context ctx;
    size_t iv_offset = 0;

    memset(output, 0x00, 100);
    mbedtls_aes_init( &ctx );


    mbedtls_aes_setkey_enc( &ctx, key_str->x, key_str->len * 8 );
    TEST_ASSERT( mbedtls_aes_crypt_cfb128( &ctx, MBEDTLS_AES_ENCRYPT, 16, &iv_offset, iv_str->x, src_str->x, output ) == 0 );

    TEST_ASSERT( mbedtls_test_hexcmp( output, hex_dst_string->x, 16, hex_dst_string->len ) == 0 );

exit:
    mbedtls_aes_free( &ctx );
}
/* END_CASE */

/* BEGIN_CASE depends_on:MBEDTLS_CIPHER_MODE_CFB */
void aes_decrypt_cfb128( data_t * key_str, data_t * iv_str,
                         data_t * src_str, data_t * hex_dst_string )
{
    unsigned char output[100];
    mbedtls_aes_context ctx;
    size_t iv_offset = 0;

    memset(output, 0x00, 100);
    mbedtls_aes_init( &ctx );


    mbedtls_aes_setkey_enc( &ctx, key_str->x, key_str->len * 8 );
    TEST_ASSERT( mbedtls_aes_crypt_cfb128( &ctx, MBEDTLS_AES_DECRYPT, 16, &iv_offset, iv_str->x, src_str->x, output ) == 0 );

    TEST_ASSERT( mbedtls_test_hexcmp( output, hex_dst_string->x, 16, hex_dst_string->len ) == 0 );

exit:
    mbedtls_aes_free( &ctx );
}
/* END_CASE */

/* BEGIN_CASE depends_on:MBEDTLS_CIPHER_MODE_CFB */
void aes_encrypt_cfb8( data_t * key_str, data_t * iv_str,
                       data_t * src_str, data_t * hex_dst_string )
{
    unsigned char output[100];
    mbedtls_aes_context ctx;

    memset(output, 0x00, 100);
    mbedtls_aes_init( &ctx );


    mbedtls_aes_setkey_enc( &ctx, key_str->x, key_str->len * 8 );
    TEST_ASSERT( mbedtls_aes_crypt_cfb8( &ctx, MBEDTLS_AES_ENCRYPT, src_str->len, iv_str->x, src_str->x, output ) == 0 );

    TEST_ASSERT( mbedtls_test_hexcmp( output, hex_dst_string->x, src_str->len, hex_dst_string->len ) == 0 );

exit:
    mbedtls_aes_free( &ctx );
}
/* END_CASE */

/* BEGIN_CASE depends_on:MBEDTLS_CIPHER_MODE_CFB */
void aes_decrypt_cfb8( data_t * key_str, data_t * iv_str,
                       data_t * src_str, data_t * hex_dst_string )
{
    unsigned char output[100];
    mbedtls_aes_context ctx;

    memset(output, 0x00, 100);
    mbedtls_aes_init( &ctx );


    mbedtls_aes_setkey_enc( &ctx, key_str->x, key_str->len * 8 );
    TEST_ASSERT( mbedtls_aes_crypt_cfb8( &ctx, MBEDTLS_AES_DECRYPT, src_str->len, iv_str->x, src_str->x, output ) == 0 );

    TEST_ASSERT( mbedtls_test_hexcmp( output, hex_dst_string->x, src_str->len, hex_dst_string->len ) == 0 );

exit:
    mbedtls_aes_free( &ctx );
}
/* END_CASE */

/* BEGIN_CASE depends_on:MBEDTLS_CIPHER_MODE_OFB */
void aes_encrypt_ofb( int fragment_size, char *hex_key_string,
                      char *hex_iv_string, char *hex_src_string,
                      char *hex_dst_string )
{
    unsigned char key_str[32];
    unsigned char iv_str[16];
    unsigned char src_str[64];
    unsigned char dst_str[64];
    unsigned char output[32];
    mbedtls_aes_context ctx;
    size_t iv_offset = 0;
    int in_buffer_len;
    unsigned char* src_str_next;
    int key_len;

    memset( key_str, 0x00, sizeof( key_str ) );
    memset( iv_str, 0x00, sizeof( iv_str ) );
    memset( src_str, 0x00, sizeof( src_str ) );
    memset( dst_str, 0x00, sizeof( dst_str ) );
    memset( output, 0x00, sizeof( output ) );
    mbedtls_aes_init( &ctx );

    TEST_ASSERT( strlen( hex_key_string ) <= ( 32 * 2 ) );
    TEST_ASSERT( strlen( hex_iv_string ) <= ( 16 * 2 ) );
    TEST_ASSERT( strlen( hex_src_string ) <= ( 64 * 2 ) );
    TEST_ASSERT( strlen( hex_dst_string ) <= ( 64 * 2 ) );

    key_len = mbedtls_test_unhexify( key_str, hex_key_string );
    mbedtls_test_unhexify( iv_str, hex_iv_string );
    in_buffer_len = mbedtls_test_unhexify( src_str, hex_src_string );

    TEST_ASSERT( mbedtls_aes_setkey_enc( &ctx, key_str, key_len * 8 ) == 0 );
    src_str_next = src_str;

    while( in_buffer_len > 0 )
    {
        TEST_ASSERT( mbedtls_aes_crypt_ofb( &ctx, fragment_size, &iv_offset,
                                            iv_str, src_str_next, output ) == 0 );

        mbedtls_test_hexify( dst_str, output, fragment_size );
        TEST_ASSERT( strncmp( (char *) dst_str, hex_dst_string,
                              ( 2 * fragment_size ) ) == 0 );

        in_buffer_len -= fragment_size;
        hex_dst_string += ( fragment_size * 2 );
        src_str_next += fragment_size;

        if( in_buffer_len < fragment_size )
            fragment_size = in_buffer_len;
    }

exit:
    mbedtls_aes_free( &ctx );
}
/* END_CASE */

/* BEGIN_CASE depends_on:MBEDTLS_CHECK_PARAMS:!MBEDTLS_PARAM_FAILED_ALT */
void aes_check_params( )
{
    mbedtls_aes_context aes_ctx;
#if defined(MBEDTLS_CIPHER_MODE_XTS)
    mbedtls_aes_xts_context xts_ctx;
#endif
    const unsigned char key[] = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06 };
    const unsigned char in[16] = { 0 };
    unsigned char out[16];
    size_t size;
    const int valid_mode = MBEDTLS_AES_ENCRYPT;
    const int invalid_mode = 42;

    TEST_INVALID_PARAM( mbedtls_aes_init( NULL ) );
#if defined(MBEDTLS_CIPHER_MODE_XTS)
    TEST_INVALID_PARAM( mbedtls_aes_xts_init( NULL ) );
#endif

    TEST_INVALID_PARAM_RET( MBEDTLS_ERR_AES_BAD_INPUT_DATA,
                            mbedtls_aes_setkey_enc( NULL, key, 128 ) );
    TEST_INVALID_PARAM_RET( MBEDTLS_ERR_AES_BAD_INPUT_DATA,
                            mbedtls_aes_setkey_enc( &aes_ctx, NULL, 128 ) );

    TEST_INVALID_PARAM_RET( MBEDTLS_ERR_AES_BAD_INPUT_DATA,
                            mbedtls_aes_setkey_dec( NULL, key, 128 ) );
    TEST_INVALID_PARAM_RET( MBEDTLS_ERR_AES_BAD_INPUT_DATA,
                            mbedtls_aes_setkey_dec( &aes_ctx, NULL, 128 ) );

#if defined(MBEDTLS_CIPHER_MODE_XTS)
    TEST_INVALID_PARAM_RET( MBEDTLS_ERR_AES_BAD_INPUT_DATA,
                            mbedtls_aes_xts_setkey_enc( NULL, key, 128 ) );
    TEST_INVALID_PARAM_RET( MBEDTLS_ERR_AES_BAD_INPUT_DATA,
                            mbedtls_aes_xts_setkey_enc( &xts_ctx, NULL, 128 ) );

    TEST_INVALID_PARAM_RET( MBEDTLS_ERR_AES_BAD_INPUT_DATA,
                            mbedtls_aes_xts_setkey_dec( NULL, key, 128 ) );
    TEST_INVALID_PARAM_RET( MBEDTLS_ERR_AES_BAD_INPUT_DATA,
                            mbedtls_aes_xts_setkey_dec( &xts_ctx, NULL, 128 ) );
#endif


    TEST_INVALID_PARAM_RET( MBEDTLS_ERR_AES_BAD_INPUT_DATA,
                            mbedtls_aes_crypt_ecb( NULL,
                                                   valid_mode, in, out ) );
    TEST_INVALID_PARAM_RET( MBEDTLS_ERR_AES_BAD_INPUT_DATA,
                            mbedtls_aes_crypt_ecb( &aes_ctx,
                                                   invalid_mode, in, out ) );
    TEST_INVALID_PARAM_RET( MBEDTLS_ERR_AES_BAD_INPUT_DATA,
                            mbedtls_aes_crypt_ecb( &aes_ctx,
                                                   valid_mode, NULL, out ) );
    TEST_INVALID_PARAM_RET( MBEDTLS_ERR_AES_BAD_INPUT_DATA,
                            mbedtls_aes_crypt_ecb( &aes_ctx,
                                                   valid_mode, in, NULL ) );

#if defined(MBEDTLS_CIPHER_MODE_CBC)
    TEST_INVALID_PARAM_RET( MBEDTLS_ERR_AES_BAD_INPUT_DATA,
                            mbedtls_aes_crypt_cbc( NULL,
                                                   valid_mode, 16,
                                                   out, in, out ) );
    TEST_INVALID_PARAM_RET( MBEDTLS_ERR_AES_BAD_INPUT_DATA,
                            mbedtls_aes_crypt_cbc( &aes_ctx,
                                                   invalid_mode, 16,
                                                   out, in, out ) );
    TEST_INVALID_PARAM_RET( MBEDTLS_ERR_AES_BAD_INPUT_DATA,
                            mbedtls_aes_crypt_cbc( &aes_ctx,
                                                   valid_mode, 16,
                                                   NULL, in, out ) );
    TEST_INVALID_PARAM_RET( MBEDTLS_ERR_AES_BAD_INPUT_DATA,
                            mbedtls_aes_crypt_cbc( &aes_ctx,
                                                   valid_mode, 16,
                                                   out, NULL, out ) );
    TEST_INVALID_PARAM_RET( MBEDTLS_ERR_AES_BAD_INPUT_DATA,
                            mbedtls_aes_crypt_cbc( &aes_ctx,
                                                   valid_mode, 16,
                                                   out, in, NULL ) );
#endif /* MBEDTLS_CIPHER_MODE_CBC */

#if defined(MBEDTLS_CIPHER_MODE_XTS)
    TEST_INVALID_PARAM_RET( MBEDTLS_ERR_AES_BAD_INPUT_DATA,
                            mbedtls_aes_crypt_xts( NULL,
                                                   valid_mode, 16,
                                                   in, in, out ) );
    TEST_INVALID_PARAM_RET( MBEDTLS_ERR_AES_BAD_INPUT_DATA,
                            mbedtls_aes_crypt_xts( &xts_ctx,
                                                   invalid_mode, 16,
                                                   in, in, out ) );
    TEST_INVALID_PARAM_RET( MBEDTLS_ERR_AES_BAD_INPUT_DATA,
                            mbedtls_aes_crypt_xts( &xts_ctx,
                                                   valid_mode, 16,
                                                   NULL, in, out ) );
    TEST_INVALID_PARAM_RET( MBEDTLS_ERR_AES_BAD_INPUT_DATA,
                            mbedtls_aes_crypt_xts( &xts_ctx,
                                                   valid_mode, 16,
                                                   in, NULL, out ) );
    TEST_INVALID_PARAM_RET( MBEDTLS_ERR_AES_BAD_INPUT_DATA,
                            mbedtls_aes_crypt_xts( &xts_ctx,
                                                   valid_mode, 16,
                                                   in, in, NULL ) );
#endif /* MBEDTLS_CIPHER_MODE_XTS */

#if defined(MBEDTLS_CIPHER_MODE_CFB)
    TEST_INVALID_PARAM_RET( MBEDTLS_ERR_AES_BAD_INPUT_DATA,
                            mbedtls_aes_crypt_cfb128( NULL,
                                                      valid_mode, 16,
                                                      &size, out, in, out ) );
    TEST_INVALID_PARAM_RET( MBEDTLS_ERR_AES_BAD_INPUT_DATA,
                            mbedtls_aes_crypt_cfb128( &aes_ctx,
                                                      invalid_mode, 16,
                                                      &size, out, in, out ) );
    TEST_INVALID_PARAM_RET( MBEDTLS_ERR_AES_BAD_INPUT_DATA,
                            mbedtls_aes_crypt_cfb128( &aes_ctx,
                                                      valid_mode, 16,
                                                      NULL, out, in, out ) );
    TEST_INVALID_PARAM_RET( MBEDTLS_ERR_AES_BAD_INPUT_DATA,
                            mbedtls_aes_crypt_cfb128( &aes_ctx,
                                                      valid_mode, 16,
                                                      &size, NULL, in, out ) );
    TEST_INVALID_PARAM_RET( MBEDTLS_ERR_AES_BAD_INPUT_DATA,
                            mbedtls_aes_crypt_cfb128( &aes_ctx,
                                                      valid_mode, 16,
                                                      &size, out, NULL, out ) );
    TEST_INVALID_PARAM_RET( MBEDTLS_ERR_AES_BAD_INPUT_DATA,
                            mbedtls_aes_crypt_cfb128( &aes_ctx,
                                                      valid_mode, 16,
                                                      &size, out, in, NULL ) );


    TEST_INVALID_PARAM_RET( MBEDTLS_ERR_AES_BAD_INPUT_DATA,
                            mbedtls_aes_crypt_cfb8( NULL,
                                                    valid_mode, 16,
                                                    out, in, out ) );
    TEST_INVALID_PARAM_RET( MBEDTLS_ERR_AES_BAD_INPUT_DATA,
                            mbedtls_aes_crypt_cfb8( &aes_ctx,
                                                    invalid_mode, 16,
                                                    out, in, out ) );
    TEST_INVALID_PARAM_RET( MBEDTLS_ERR_AES_BAD_INPUT_DATA,
                            mbedtls_aes_crypt_cfb8( &aes_ctx,
                                                    valid_mode, 16,
                                                    NULL, in, out ) );
    TEST_INVALID_PARAM_RET( MBEDTLS_ERR_AES_BAD_INPUT_DATA,
                            mbedtls_aes_crypt_cfb8( &aes_ctx,
                                                    valid_mode, 16,
                                                    out, NULL, out ) );
    TEST_INVALID_PARAM_RET( MBEDTLS_ERR_AES_BAD_INPUT_DATA,
                            mbedtls_aes_crypt_cfb8( &aes_ctx,
                                                    valid_mode, 16,
                                                    out, in, NULL ) );
#endif /* MBEDTLS_CIPHER_MODE_CFB */

#if defined(MBEDTLS_CIPHER_MODE_OFB)
    TEST_INVALID_PARAM_RET( MBEDTLS_ERR_AES_BAD_INPUT_DATA,
                            mbedtls_aes_crypt_ofb( NULL, 16,
                                                   &size, out, in, out ) );
    TEST_INVALID_PARAM_RET( MBEDTLS_ERR_AES_BAD_INPUT_DATA,
                            mbedtls_aes_crypt_ofb( &aes_ctx, 16,
                                                   NULL, out, in, out ) );
    TEST_INVALID_PARAM_RET( MBEDTLS_ERR_AES_BAD_INPUT_DATA,
                            mbedtls_aes_crypt_ofb( &aes_ctx, 16,
                                                   &size, NULL, in, out ) );
    TEST_INVALID_PARAM_RET( MBEDTLS_ERR_AES_BAD_INPUT_DATA,
                            mbedtls_aes_crypt_ofb( &aes_ctx, 16,
                                                   &size, out, NULL, out ) );
    TEST_INVALID_PARAM_RET( MBEDTLS_ERR_AES_BAD_INPUT_DATA,
                            mbedtls_aes_crypt_ofb( &aes_ctx, 16,
                                                   &size, out, in, NULL ) );
#endif /* MBEDTLS_CIPHER_MODE_OFB */

#if defined(MBEDTLS_CIPHER_MODE_CTR)
    TEST_INVALID_PARAM_RET( MBEDTLS_ERR_AES_BAD_INPUT_DATA,
                            mbedtls_aes_crypt_ctr( NULL, 16, &size, out,
                                                   out, in, out ) );
    TEST_INVALID_PARAM_RET( MBEDTLS_ERR_AES_BAD_INPUT_DATA,
                            mbedtls_aes_crypt_ctr( &aes_ctx, 16, NULL, out,
                                                   out, in, out ) );
    TEST_INVALID_PARAM_RET( MBEDTLS_ERR_AES_BAD_INPUT_DATA,
                            mbedtls_aes_crypt_ctr( &aes_ctx, 16, &size, NULL,
                                                   out, in, out ) );
    TEST_INVALID_PARAM_RET( MBEDTLS_ERR_AES_BAD_INPUT_DATA,
                            mbedtls_aes_crypt_ctr( &aes_ctx, 16, &size, out,
                                                   NULL, in, out ) );
    TEST_INVALID_PARAM_RET( MBEDTLS_ERR_AES_BAD_INPUT_DATA,
                            mbedtls_aes_crypt_ctr( &aes_ctx, 16, &size, out,
                                                   out, NULL, out ) );
    TEST_INVALID_PARAM_RET( MBEDTLS_ERR_AES_BAD_INPUT_DATA,
                            mbedtls_aes_crypt_ctr( &aes_ctx, 16, &size, out,
                                                   out, in, NULL ) );
#endif /* MBEDTLS_CIPHER_MODE_CTR */
}
/* END_CASE */

/* BEGIN_CASE */
void aes_misc_params( )
{
#if defined(MBEDTLS_CIPHER_MODE_CBC) || \
    defined(MBEDTLS_CIPHER_MODE_XTS) || \
    defined(MBEDTLS_CIPHER_MODE_CFB) || \
    defined(MBEDTLS_CIPHER_MODE_OFB)
    mbedtls_aes_context aes_ctx;
    const unsigned char in[16] = { 0 };
    unsigned char out[16];
#endif
#if defined(MBEDTLS_CIPHER_MODE_XTS)
    mbedtls_aes_xts_context xts_ctx;
#endif
#if defined(MBEDTLS_CIPHER_MODE_CFB) || \
    defined(MBEDTLS_CIPHER_MODE_OFB)
    size_t size;
#endif

    /* These calls accept NULL */
    TEST_VALID_PARAM( mbedtls_aes_free( NULL ) );
#if defined(MBEDTLS_CIPHER_MODE_XTS)
    TEST_VALID_PARAM( mbedtls_aes_xts_free( NULL ) );
#endif

#if defined(MBEDTLS_CIPHER_MODE_CBC)
    TEST_ASSERT( mbedtls_aes_crypt_cbc( &aes_ctx, MBEDTLS_AES_ENCRYPT,
                                        15,
                                        out, in, out )
                 == MBEDTLS_ERR_AES_INVALID_INPUT_LENGTH );
    TEST_ASSERT( mbedtls_aes_crypt_cbc( &aes_ctx, MBEDTLS_AES_ENCRYPT,
                                        17,
                                        out, in, out )
                 == MBEDTLS_ERR_AES_INVALID_INPUT_LENGTH );
#endif

#if defined(MBEDTLS_CIPHER_MODE_XTS)
    TEST_ASSERT( mbedtls_aes_crypt_xts( &xts_ctx, MBEDTLS_AES_ENCRYPT,
                                        15,
                                        in, in, out )
                 == MBEDTLS_ERR_AES_INVALID_INPUT_LENGTH );
    TEST_ASSERT( mbedtls_aes_crypt_xts( &xts_ctx, MBEDTLS_AES_ENCRYPT,
                                        (1 << 24) + 1,
                                        in, in, out )
                 == MBEDTLS_ERR_AES_INVALID_INPUT_LENGTH );
#endif

#if defined(MBEDTLS_CIPHER_MODE_CFB)
    size = 16;
    TEST_ASSERT( mbedtls_aes_crypt_cfb128( &aes_ctx, MBEDTLS_AES_ENCRYPT, 16,
                                           &size, out, in, out )
                 == MBEDTLS_ERR_AES_BAD_INPUT_DATA );
#endif

#if defined(MBEDTLS_CIPHER_MODE_OFB)
    size = 16;
    TEST_ASSERT( mbedtls_aes_crypt_ofb( &aes_ctx, 16, &size, out, in, out )
                 == MBEDTLS_ERR_AES_BAD_INPUT_DATA );
#endif
}
/* END_CASE */

/* BEGIN_CASE depends_on:MBEDTLS_SELF_TEST */
void aes_selftest(  )
{
    TEST_ASSERT( mbedtls_aes_self_test( 1 ) == 0 );
}
/* END_CASE */