sandbox / mbedtls

mbedtls ported to mbed-classic

Fork of mbedtls by Christopher Haster

source/xtea.c@4:bef26f687287, 2016-04-07 (annotated)

Committer:
Brian Daniels
Date:
Thu Apr 07 11:11:18 2016 +0100
Revision:
4:bef26f687287
Parent:
1:24750b9ad5ef 
Adding ported selftest test case

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Christopher Haster 1:24750b9ad5ef 1 /*
Christopher Haster 1:24750b9ad5ef 2 * An 32-bit implementation of the XTEA algorithm
Christopher Haster 1:24750b9ad5ef 3 *
Christopher Haster 1:24750b9ad5ef 4 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
Christopher Haster 1:24750b9ad5ef 5 * SPDX-License-Identifier: Apache-2.0
Christopher Haster 1:24750b9ad5ef 6 *
Christopher Haster 1:24750b9ad5ef 7 * Licensed under the Apache License, Version 2.0 (the "License"); you may
Christopher Haster 1:24750b9ad5ef 8 * not use this file except in compliance with the License.
Christopher Haster 1:24750b9ad5ef 9 * You may obtain a copy of the License at
Christopher Haster 1:24750b9ad5ef 10 *
Christopher Haster 1:24750b9ad5ef 11 * http://www.apache.org/licenses/LICENSE-2.0
Christopher Haster 1:24750b9ad5ef 12 *
Christopher Haster 1:24750b9ad5ef 13 * Unless required by applicable law or agreed to in writing, software
Christopher Haster 1:24750b9ad5ef 14 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
Christopher Haster 1:24750b9ad5ef 15 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
Christopher Haster 1:24750b9ad5ef 16 * See the License for the specific language governing permissions and
Christopher Haster 1:24750b9ad5ef 17 * limitations under the License.
Christopher Haster 1:24750b9ad5ef 18 *
Christopher Haster 1:24750b9ad5ef 19 * This file is part of mbed TLS (https://tls.mbed.org)
Christopher Haster 1:24750b9ad5ef 20 */
Christopher Haster 1:24750b9ad5ef 21
Christopher Haster 1:24750b9ad5ef 22 #if !defined(MBEDTLS_CONFIG_FILE)
Christopher Haster 1:24750b9ad5ef 23 #include "mbedtls/config.h"
Christopher Haster 1:24750b9ad5ef 24 #else
Christopher Haster 1:24750b9ad5ef 25 #include MBEDTLS_CONFIG_FILE
Christopher Haster 1:24750b9ad5ef 26 #endif
Christopher Haster 1:24750b9ad5ef 27
Christopher Haster 1:24750b9ad5ef 28 #if defined(MBEDTLS_XTEA_C)
Christopher Haster 1:24750b9ad5ef 29
Christopher Haster 1:24750b9ad5ef 30 #include "mbedtls/xtea.h"
Christopher Haster 1:24750b9ad5ef 31
Christopher Haster 1:24750b9ad5ef 32 #include <string.h>
Christopher Haster 1:24750b9ad5ef 33
Christopher Haster 1:24750b9ad5ef 34 #if defined(MBEDTLS_SELF_TEST)
Christopher Haster 1:24750b9ad5ef 35 #if defined(MBEDTLS_PLATFORM_C)
Christopher Haster 1:24750b9ad5ef 36 #include "mbedtls/platform.h"
Christopher Haster 1:24750b9ad5ef 37 #else
Christopher Haster 1:24750b9ad5ef 38 #include <stdio.h>
Christopher Haster 1:24750b9ad5ef 39 #define mbedtls_printf printf
Christopher Haster 1:24750b9ad5ef 40 #endif /* MBEDTLS_PLATFORM_C */
Christopher Haster 1:24750b9ad5ef 41 #endif /* MBEDTLS_SELF_TEST */
Christopher Haster 1:24750b9ad5ef 42
Christopher Haster 1:24750b9ad5ef 43 #if !defined(MBEDTLS_XTEA_ALT)
Christopher Haster 1:24750b9ad5ef 44
Christopher Haster 1:24750b9ad5ef 45 /* Implementation that should never be optimized out by the compiler */
Christopher Haster 1:24750b9ad5ef 46 static void mbedtls_zeroize( void *v, size_t n ) {
Christopher Haster 1:24750b9ad5ef 47 volatile unsigned char *p = v; while( n-- ) *p++ = 0;
Christopher Haster 1:24750b9ad5ef 48 }
Christopher Haster 1:24750b9ad5ef 49
Christopher Haster 1:24750b9ad5ef 50 /*
Christopher Haster 1:24750b9ad5ef 51 * 32-bit integer manipulation macros (big endian)
Christopher Haster 1:24750b9ad5ef 52 */
Christopher Haster 1:24750b9ad5ef 53 #ifndef GET_UINT32_BE
Christopher Haster 1:24750b9ad5ef 54 #define GET_UINT32_BE(n,b,i) \
Christopher Haster 1:24750b9ad5ef 55 { \
Christopher Haster 1:24750b9ad5ef 56 (n) = ( (uint32_t) (b)[(i) ] << 24 ) \
Christopher Haster 1:24750b9ad5ef 57 | ( (uint32_t) (b)[(i) + 1] << 16 ) \
Christopher Haster 1:24750b9ad5ef 58 | ( (uint32_t) (b)[(i) + 2] << 8 ) \
Christopher Haster 1:24750b9ad5ef 59 | ( (uint32_t) (b)[(i) + 3] ); \
Christopher Haster 1:24750b9ad5ef 60 }
Christopher Haster 1:24750b9ad5ef 61 #endif
Christopher Haster 1:24750b9ad5ef 62
Christopher Haster 1:24750b9ad5ef 63 #ifndef PUT_UINT32_BE
Christopher Haster 1:24750b9ad5ef 64 #define PUT_UINT32_BE(n,b,i) \
Christopher Haster 1:24750b9ad5ef 65 { \
Christopher Haster 1:24750b9ad5ef 66 (b)[(i) ] = (unsigned char) ( (n) >> 24 ); \
Christopher Haster 1:24750b9ad5ef 67 (b)[(i) + 1] = (unsigned char) ( (n) >> 16 ); \
Christopher Haster 1:24750b9ad5ef 68 (b)[(i) + 2] = (unsigned char) ( (n) >> 8 ); \
Christopher Haster 1:24750b9ad5ef 69 (b)[(i) + 3] = (unsigned char) ( (n) ); \
Christopher Haster 1:24750b9ad5ef 70 }
Christopher Haster 1:24750b9ad5ef 71 #endif
Christopher Haster 1:24750b9ad5ef 72
Christopher Haster 1:24750b9ad5ef 73 void mbedtls_xtea_init( mbedtls_xtea_context *ctx )
Christopher Haster 1:24750b9ad5ef 74 {
Christopher Haster 1:24750b9ad5ef 75 memset( ctx, 0, sizeof( mbedtls_xtea_context ) );
Christopher Haster 1:24750b9ad5ef 76 }
Christopher Haster 1:24750b9ad5ef 77
Christopher Haster 1:24750b9ad5ef 78 void mbedtls_xtea_free( mbedtls_xtea_context *ctx )
Christopher Haster 1:24750b9ad5ef 79 {
Christopher Haster 1:24750b9ad5ef 80 if( ctx == NULL )
Christopher Haster 1:24750b9ad5ef 81 return;
Christopher Haster 1:24750b9ad5ef 82
Christopher Haster 1:24750b9ad5ef 83 mbedtls_zeroize( ctx, sizeof( mbedtls_xtea_context ) );
Christopher Haster 1:24750b9ad5ef 84 }
Christopher Haster 1:24750b9ad5ef 85
Christopher Haster 1:24750b9ad5ef 86 /*
Christopher Haster 1:24750b9ad5ef 87 * XTEA key schedule
Christopher Haster 1:24750b9ad5ef 88 */
Christopher Haster 1:24750b9ad5ef 89 void mbedtls_xtea_setup( mbedtls_xtea_context *ctx, const unsigned char key[16] )
Christopher Haster 1:24750b9ad5ef 90 {
Christopher Haster 1:24750b9ad5ef 91 int i;
Christopher Haster 1:24750b9ad5ef 92
Christopher Haster 1:24750b9ad5ef 93 memset( ctx, 0, sizeof(mbedtls_xtea_context) );
Christopher Haster 1:24750b9ad5ef 94
Christopher Haster 1:24750b9ad5ef 95 for( i = 0; i < 4; i++ )
Christopher Haster 1:24750b9ad5ef 96 {
Christopher Haster 1:24750b9ad5ef 97 GET_UINT32_BE( ctx->k[i], key, i << 2 );
Christopher Haster 1:24750b9ad5ef 98 }
Christopher Haster 1:24750b9ad5ef 99 }
Christopher Haster 1:24750b9ad5ef 100
Christopher Haster 1:24750b9ad5ef 101 /*
Christopher Haster 1:24750b9ad5ef 102 * XTEA encrypt function
Christopher Haster 1:24750b9ad5ef 103 */
Christopher Haster 1:24750b9ad5ef 104 int mbedtls_xtea_crypt_ecb( mbedtls_xtea_context *ctx, int mode,
Christopher Haster 1:24750b9ad5ef 105 const unsigned char input[8], unsigned char output[8])
Christopher Haster 1:24750b9ad5ef 106 {
Christopher Haster 1:24750b9ad5ef 107 uint32_t *k, v0, v1, i;
Christopher Haster 1:24750b9ad5ef 108
Christopher Haster 1:24750b9ad5ef 109 k = ctx->k;
Christopher Haster 1:24750b9ad5ef 110
Christopher Haster 1:24750b9ad5ef 111 GET_UINT32_BE( v0, input, 0 );
Christopher Haster 1:24750b9ad5ef 112 GET_UINT32_BE( v1, input, 4 );
Christopher Haster 1:24750b9ad5ef 113
Christopher Haster 1:24750b9ad5ef 114 if( mode == MBEDTLS_XTEA_ENCRYPT )
Christopher Haster 1:24750b9ad5ef 115 {
Christopher Haster 1:24750b9ad5ef 116 uint32_t sum = 0, delta = 0x9E3779B9;
Christopher Haster 1:24750b9ad5ef 117
Christopher Haster 1:24750b9ad5ef 118 for( i = 0; i < 32; i++ )
Christopher Haster 1:24750b9ad5ef 119 {
Christopher Haster 1:24750b9ad5ef 120 v0 += (((v1 << 4) ^ (v1 >> 5)) + v1) ^ (sum + k[sum & 3]);
Christopher Haster 1:24750b9ad5ef 121 sum += delta;
Christopher Haster 1:24750b9ad5ef 122 v1 += (((v0 << 4) ^ (v0 >> 5)) + v0) ^ (sum + k[(sum>>11) & 3]);
Christopher Haster 1:24750b9ad5ef 123 }
Christopher Haster 1:24750b9ad5ef 124 }
Christopher Haster 1:24750b9ad5ef 125 else /* MBEDTLS_XTEA_DECRYPT */
Christopher Haster 1:24750b9ad5ef 126 {
Christopher Haster 1:24750b9ad5ef 127 uint32_t delta = 0x9E3779B9, sum = delta * 32;
Christopher Haster 1:24750b9ad5ef 128
Christopher Haster 1:24750b9ad5ef 129 for( i = 0; i < 32; i++ )
Christopher Haster 1:24750b9ad5ef 130 {
Christopher Haster 1:24750b9ad5ef 131 v1 -= (((v0 << 4) ^ (v0 >> 5)) + v0) ^ (sum + k[(sum>>11) & 3]);
Christopher Haster 1:24750b9ad5ef 132 sum -= delta;
Christopher Haster 1:24750b9ad5ef 133 v0 -= (((v1 << 4) ^ (v1 >> 5)) + v1) ^ (sum + k[sum & 3]);
Christopher Haster 1:24750b9ad5ef 134 }
Christopher Haster 1:24750b9ad5ef 135 }
Christopher Haster 1:24750b9ad5ef 136
Christopher Haster 1:24750b9ad5ef 137 PUT_UINT32_BE( v0, output, 0 );
Christopher Haster 1:24750b9ad5ef 138 PUT_UINT32_BE( v1, output, 4 );
Christopher Haster 1:24750b9ad5ef 139
Christopher Haster 1:24750b9ad5ef 140 return( 0 );
Christopher Haster 1:24750b9ad5ef 141 }
Christopher Haster 1:24750b9ad5ef 142
Christopher Haster 1:24750b9ad5ef 143 #if defined(MBEDTLS_CIPHER_MODE_CBC)
Christopher Haster 1:24750b9ad5ef 144 /*
Christopher Haster 1:24750b9ad5ef 145 * XTEA-CBC buffer encryption/decryption
Christopher Haster 1:24750b9ad5ef 146 */
Christopher Haster 1:24750b9ad5ef 147 int mbedtls_xtea_crypt_cbc( mbedtls_xtea_context *ctx, int mode, size_t length,
Christopher Haster 1:24750b9ad5ef 148 unsigned char iv[8], const unsigned char *input,
Christopher Haster 1:24750b9ad5ef 149 unsigned char *output)
Christopher Haster 1:24750b9ad5ef 150 {
Christopher Haster 1:24750b9ad5ef 151 int i;
Christopher Haster 1:24750b9ad5ef 152 unsigned char temp[8];
Christopher Haster 1:24750b9ad5ef 153
Christopher Haster 1:24750b9ad5ef 154 if( length % 8 )
Christopher Haster 1:24750b9ad5ef 155 return( MBEDTLS_ERR_XTEA_INVALID_INPUT_LENGTH );
Christopher Haster 1:24750b9ad5ef 156
Christopher Haster 1:24750b9ad5ef 157 if( mode == MBEDTLS_XTEA_DECRYPT )
Christopher Haster 1:24750b9ad5ef 158 {
Christopher Haster 1:24750b9ad5ef 159 while( length > 0 )
Christopher Haster 1:24750b9ad5ef 160 {
Christopher Haster 1:24750b9ad5ef 161 memcpy( temp, input, 8 );
Christopher Haster 1:24750b9ad5ef 162 mbedtls_xtea_crypt_ecb( ctx, mode, input, output );
Christopher Haster 1:24750b9ad5ef 163
Christopher Haster 1:24750b9ad5ef 164 for( i = 0; i < 8; i++ )
Christopher Haster 1:24750b9ad5ef 165 output[i] = (unsigned char)( output[i] ^ iv[i] );
Christopher Haster 1:24750b9ad5ef 166
Christopher Haster 1:24750b9ad5ef 167 memcpy( iv, temp, 8 );
Christopher Haster 1:24750b9ad5ef 168
Christopher Haster 1:24750b9ad5ef 169 input += 8;
Christopher Haster 1:24750b9ad5ef 170 output += 8;
Christopher Haster 1:24750b9ad5ef 171 length -= 8;
Christopher Haster 1:24750b9ad5ef 172 }
Christopher Haster 1:24750b9ad5ef 173 }
Christopher Haster 1:24750b9ad5ef 174 else
Christopher Haster 1:24750b9ad5ef 175 {
Christopher Haster 1:24750b9ad5ef 176 while( length > 0 )
Christopher Haster 1:24750b9ad5ef 177 {
Christopher Haster 1:24750b9ad5ef 178 for( i = 0; i < 8; i++ )
Christopher Haster 1:24750b9ad5ef 179 output[i] = (unsigned char)( input[i] ^ iv[i] );
Christopher Haster 1:24750b9ad5ef 180
Christopher Haster 1:24750b9ad5ef 181 mbedtls_xtea_crypt_ecb( ctx, mode, output, output );
Christopher Haster 1:24750b9ad5ef 182 memcpy( iv, output, 8 );
Christopher Haster 1:24750b9ad5ef 183
Christopher Haster 1:24750b9ad5ef 184 input += 8;
Christopher Haster 1:24750b9ad5ef 185 output += 8;
Christopher Haster 1:24750b9ad5ef 186 length -= 8;
Christopher Haster 1:24750b9ad5ef 187 }
Christopher Haster 1:24750b9ad5ef 188 }
Christopher Haster 1:24750b9ad5ef 189
Christopher Haster 1:24750b9ad5ef 190 return( 0 );
Christopher Haster 1:24750b9ad5ef 191 }
Christopher Haster 1:24750b9ad5ef 192 #endif /* MBEDTLS_CIPHER_MODE_CBC */
Christopher Haster 1:24750b9ad5ef 193 #endif /* !MBEDTLS_XTEA_ALT */
Christopher Haster 1:24750b9ad5ef 194
Christopher Haster 1:24750b9ad5ef 195 #if defined(MBEDTLS_SELF_TEST)
Christopher Haster 1:24750b9ad5ef 196
Christopher Haster 1:24750b9ad5ef 197 /*
Christopher Haster 1:24750b9ad5ef 198 * XTEA tests vectors (non-official)
Christopher Haster 1:24750b9ad5ef 199 */
Christopher Haster 1:24750b9ad5ef 200
Christopher Haster 1:24750b9ad5ef 201 static const unsigned char xtea_test_key[6][16] =
Christopher Haster 1:24750b9ad5ef 202 {
Christopher Haster 1:24750b9ad5ef 203 { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b,
Christopher Haster 1:24750b9ad5ef 204 0x0c, 0x0d, 0x0e, 0x0f },
Christopher Haster 1:24750b9ad5ef 205 { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b,
Christopher Haster 1:24750b9ad5ef 206 0x0c, 0x0d, 0x0e, 0x0f },
Christopher Haster 1:24750b9ad5ef 207 { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b,
Christopher Haster 1:24750b9ad5ef 208 0x0c, 0x0d, 0x0e, 0x0f },
Christopher Haster 1:24750b9ad5ef 209 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
Christopher Haster 1:24750b9ad5ef 210 0x00, 0x00, 0x00, 0x00 },
Christopher Haster 1:24750b9ad5ef 211 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
Christopher Haster 1:24750b9ad5ef 212 0x00, 0x00, 0x00, 0x00 },
Christopher Haster 1:24750b9ad5ef 213 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
Christopher Haster 1:24750b9ad5ef 214 0x00, 0x00, 0x00, 0x00 }
Christopher Haster 1:24750b9ad5ef 215 };
Christopher Haster 1:24750b9ad5ef 216
Christopher Haster 1:24750b9ad5ef 217 static const unsigned char xtea_test_pt[6][8] =
Christopher Haster 1:24750b9ad5ef 218 {
Christopher Haster 1:24750b9ad5ef 219 { 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48 },
Christopher Haster 1:24750b9ad5ef 220 { 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41 },
Christopher Haster 1:24750b9ad5ef 221 { 0x5a, 0x5b, 0x6e, 0x27, 0x89, 0x48, 0xd7, 0x7f },
Christopher Haster 1:24750b9ad5ef 222 { 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48 },
Christopher Haster 1:24750b9ad5ef 223 { 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41 },
Christopher Haster 1:24750b9ad5ef 224 { 0x70, 0xe1, 0x22, 0x5d, 0x6e, 0x4e, 0x76, 0x55 }
Christopher Haster 1:24750b9ad5ef 225 };
Christopher Haster 1:24750b9ad5ef 226
Christopher Haster 1:24750b9ad5ef 227 static const unsigned char xtea_test_ct[6][8] =
Christopher Haster 1:24750b9ad5ef 228 {
Christopher Haster 1:24750b9ad5ef 229 { 0x49, 0x7d, 0xf3, 0xd0, 0x72, 0x61, 0x2c, 0xb5 },
Christopher Haster 1:24750b9ad5ef 230 { 0xe7, 0x8f, 0x2d, 0x13, 0x74, 0x43, 0x41, 0xd8 },
Christopher Haster 1:24750b9ad5ef 231 { 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41 },
Christopher Haster 1:24750b9ad5ef 232 { 0xa0, 0x39, 0x05, 0x89, 0xf8, 0xb8, 0xef, 0xa5 },
Christopher Haster 1:24750b9ad5ef 233 { 0xed, 0x23, 0x37, 0x5a, 0x82, 0x1a, 0x8c, 0x2d },
Christopher Haster 1:24750b9ad5ef 234 { 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41 }
Christopher Haster 1:24750b9ad5ef 235 };
Christopher Haster 1:24750b9ad5ef 236
Christopher Haster 1:24750b9ad5ef 237 /*
Christopher Haster 1:24750b9ad5ef 238 * Checkup routine
Christopher Haster 1:24750b9ad5ef 239 */
Christopher Haster 1:24750b9ad5ef 240 int mbedtls_xtea_self_test( int verbose )
Christopher Haster 1:24750b9ad5ef 241 {
Christopher Haster 1:24750b9ad5ef 242 int i, ret = 0;
Christopher Haster 1:24750b9ad5ef 243 unsigned char buf[8];
Christopher Haster 1:24750b9ad5ef 244 mbedtls_xtea_context ctx;
Christopher Haster 1:24750b9ad5ef 245
Christopher Haster 1:24750b9ad5ef 246 mbedtls_xtea_init( &ctx );
Christopher Haster 1:24750b9ad5ef 247 for( i = 0; i < 6; i++ )
Christopher Haster 1:24750b9ad5ef 248 {
Christopher Haster 1:24750b9ad5ef 249 if( verbose != 0 )
Christopher Haster 1:24750b9ad5ef 250 mbedtls_printf( " XTEA test #%d: ", i + 1 );
Christopher Haster 1:24750b9ad5ef 251
Christopher Haster 1:24750b9ad5ef 252 memcpy( buf, xtea_test_pt[i], 8 );
Christopher Haster 1:24750b9ad5ef 253
Christopher Haster 1:24750b9ad5ef 254 mbedtls_xtea_setup( &ctx, xtea_test_key[i] );
Christopher Haster 1:24750b9ad5ef 255 mbedtls_xtea_crypt_ecb( &ctx, MBEDTLS_XTEA_ENCRYPT, buf, buf );
Christopher Haster 1:24750b9ad5ef 256
Christopher Haster 1:24750b9ad5ef 257 if( memcmp( buf, xtea_test_ct[i], 8 ) != 0 )
Christopher Haster 1:24750b9ad5ef 258 {
Christopher Haster 1:24750b9ad5ef 259 if( verbose != 0 )
Christopher Haster 1:24750b9ad5ef 260 mbedtls_printf( "failed\n" );
Christopher Haster 1:24750b9ad5ef 261
Christopher Haster 1:24750b9ad5ef 262 ret = 1;
Christopher Haster 1:24750b9ad5ef 263 goto exit;
Christopher Haster 1:24750b9ad5ef 264 }
Christopher Haster 1:24750b9ad5ef 265
Christopher Haster 1:24750b9ad5ef 266 if( verbose != 0 )
Christopher Haster 1:24750b9ad5ef 267 mbedtls_printf( "passed\n" );
Christopher Haster 1:24750b9ad5ef 268 }
Christopher Haster 1:24750b9ad5ef 269
Christopher Haster 1:24750b9ad5ef 270 if( verbose != 0 )
Christopher Haster 1:24750b9ad5ef 271 mbedtls_printf( "\n" );
Christopher Haster 1:24750b9ad5ef 272
Christopher Haster 1:24750b9ad5ef 273 exit:
Christopher Haster 1:24750b9ad5ef 274 mbedtls_xtea_free( &ctx );
Christopher Haster 1:24750b9ad5ef 275
Christopher Haster 1:24750b9ad5ef 276 return( ret );
Christopher Haster 1:24750b9ad5ef 277 }
Christopher Haster 1:24750b9ad5ef 278
Christopher Haster 1:24750b9ad5ef 279 #endif /* MBEDTLS_SELF_TEST */
Christopher Haster 1:24750b9ad5ef 280
Christopher Haster 1:24750b9ad5ef 281 #endif /* MBEDTLS_XTEA_C */