Maxim nexpaq / nexpaq_dev

Preliminary main mbed library for nexpaq development

features/mbedtls/src/xtea.c@1:d96dbedaebdb, 2016-11-04 (annotated)

Committer:
nexpaq
Date:
Fri Nov 04 20:54:50 2016 +0000
Revision:
1:d96dbedaebdb
Parent:
0:6c56fb4bc5f0 
Removed extra directories for other platforms

Who changed what in which revision?

UserRevisionLine numberNew contents of line
nexpaq 0:6c56fb4bc5f0 1 /*
nexpaq 0:6c56fb4bc5f0 2 * An 32-bit implementation of the XTEA algorithm
nexpaq 0:6c56fb4bc5f0 3 *
nexpaq 0:6c56fb4bc5f0 4 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
nexpaq 0:6c56fb4bc5f0 5 * SPDX-License-Identifier: Apache-2.0
nexpaq 0:6c56fb4bc5f0 6 *
nexpaq 0:6c56fb4bc5f0 7 * Licensed under the Apache License, Version 2.0 (the "License"); you may
nexpaq 0:6c56fb4bc5f0 8 * not use this file except in compliance with the License.
nexpaq 0:6c56fb4bc5f0 9 * You may obtain a copy of the License at
nexpaq 0:6c56fb4bc5f0 10 *
nexpaq 0:6c56fb4bc5f0 11 * http://www.apache.org/licenses/LICENSE-2.0
nexpaq 0:6c56fb4bc5f0 12 *
nexpaq 0:6c56fb4bc5f0 13 * Unless required by applicable law or agreed to in writing, software
nexpaq 0:6c56fb4bc5f0 14 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
nexpaq 0:6c56fb4bc5f0 15 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
nexpaq 0:6c56fb4bc5f0 16 * See the License for the specific language governing permissions and
nexpaq 0:6c56fb4bc5f0 17 * limitations under the License.
nexpaq 0:6c56fb4bc5f0 18 *
nexpaq 0:6c56fb4bc5f0 19 * This file is part of mbed TLS (https://tls.mbed.org)
nexpaq 0:6c56fb4bc5f0 20 */
nexpaq 0:6c56fb4bc5f0 21
nexpaq 0:6c56fb4bc5f0 22 #if !defined(MBEDTLS_CONFIG_FILE)
nexpaq 0:6c56fb4bc5f0 23 #include "mbedtls/config.h"
nexpaq 0:6c56fb4bc5f0 24 #else
nexpaq 0:6c56fb4bc5f0 25 #include MBEDTLS_CONFIG_FILE
nexpaq 0:6c56fb4bc5f0 26 #endif
nexpaq 0:6c56fb4bc5f0 27
nexpaq 0:6c56fb4bc5f0 28 #if defined(MBEDTLS_XTEA_C)
nexpaq 0:6c56fb4bc5f0 29
nexpaq 0:6c56fb4bc5f0 30 #include "mbedtls/xtea.h"
nexpaq 0:6c56fb4bc5f0 31
nexpaq 0:6c56fb4bc5f0 32 #include <string.h>
nexpaq 0:6c56fb4bc5f0 33
nexpaq 0:6c56fb4bc5f0 34 #if defined(MBEDTLS_SELF_TEST)
nexpaq 0:6c56fb4bc5f0 35 #if defined(MBEDTLS_PLATFORM_C)
nexpaq 0:6c56fb4bc5f0 36 #include "mbedtls/platform.h"
nexpaq 0:6c56fb4bc5f0 37 #else
nexpaq 0:6c56fb4bc5f0 38 #include <stdio.h>
nexpaq 0:6c56fb4bc5f0 39 #define mbedtls_printf printf
nexpaq 0:6c56fb4bc5f0 40 #endif /* MBEDTLS_PLATFORM_C */
nexpaq 0:6c56fb4bc5f0 41 #endif /* MBEDTLS_SELF_TEST */
nexpaq 0:6c56fb4bc5f0 42
nexpaq 0:6c56fb4bc5f0 43 #if !defined(MBEDTLS_XTEA_ALT)
nexpaq 0:6c56fb4bc5f0 44
nexpaq 0:6c56fb4bc5f0 45 /* Implementation that should never be optimized out by the compiler */
nexpaq 0:6c56fb4bc5f0 46 static void mbedtls_zeroize( void *v, size_t n ) {
nexpaq 0:6c56fb4bc5f0 47 volatile unsigned char *p = v; while( n-- ) *p++ = 0;
nexpaq 0:6c56fb4bc5f0 48 }
nexpaq 0:6c56fb4bc5f0 49
nexpaq 0:6c56fb4bc5f0 50 /*
nexpaq 0:6c56fb4bc5f0 51 * 32-bit integer manipulation macros (big endian)
nexpaq 0:6c56fb4bc5f0 52 */
nexpaq 0:6c56fb4bc5f0 53 #ifndef GET_UINT32_BE
nexpaq 0:6c56fb4bc5f0 54 #define GET_UINT32_BE(n,b,i) \
nexpaq 0:6c56fb4bc5f0 55 { \
nexpaq 0:6c56fb4bc5f0 56 (n) = ( (uint32_t) (b)[(i) ] << 24 ) \
nexpaq 0:6c56fb4bc5f0 57 | ( (uint32_t) (b)[(i) + 1] << 16 ) \
nexpaq 0:6c56fb4bc5f0 58 | ( (uint32_t) (b)[(i) + 2] << 8 ) \
nexpaq 0:6c56fb4bc5f0 59 | ( (uint32_t) (b)[(i) + 3] ); \
nexpaq 0:6c56fb4bc5f0 60 }
nexpaq 0:6c56fb4bc5f0 61 #endif
nexpaq 0:6c56fb4bc5f0 62
nexpaq 0:6c56fb4bc5f0 63 #ifndef PUT_UINT32_BE
nexpaq 0:6c56fb4bc5f0 64 #define PUT_UINT32_BE(n,b,i) \
nexpaq 0:6c56fb4bc5f0 65 { \
nexpaq 0:6c56fb4bc5f0 66 (b)[(i) ] = (unsigned char) ( (n) >> 24 ); \
nexpaq 0:6c56fb4bc5f0 67 (b)[(i) + 1] = (unsigned char) ( (n) >> 16 ); \
nexpaq 0:6c56fb4bc5f0 68 (b)[(i) + 2] = (unsigned char) ( (n) >> 8 ); \
nexpaq 0:6c56fb4bc5f0 69 (b)[(i) + 3] = (unsigned char) ( (n) ); \
nexpaq 0:6c56fb4bc5f0 70 }
nexpaq 0:6c56fb4bc5f0 71 #endif
nexpaq 0:6c56fb4bc5f0 72
nexpaq 0:6c56fb4bc5f0 73 void mbedtls_xtea_init( mbedtls_xtea_context *ctx )
nexpaq 0:6c56fb4bc5f0 74 {
nexpaq 0:6c56fb4bc5f0 75 memset( ctx, 0, sizeof( mbedtls_xtea_context ) );
nexpaq 0:6c56fb4bc5f0 76 }
nexpaq 0:6c56fb4bc5f0 77
nexpaq 0:6c56fb4bc5f0 78 void mbedtls_xtea_free( mbedtls_xtea_context *ctx )
nexpaq 0:6c56fb4bc5f0 79 {
nexpaq 0:6c56fb4bc5f0 80 if( ctx == NULL )
nexpaq 0:6c56fb4bc5f0 81 return;
nexpaq 0:6c56fb4bc5f0 82
nexpaq 0:6c56fb4bc5f0 83 mbedtls_zeroize( ctx, sizeof( mbedtls_xtea_context ) );
nexpaq 0:6c56fb4bc5f0 84 }
nexpaq 0:6c56fb4bc5f0 85
nexpaq 0:6c56fb4bc5f0 86 /*
nexpaq 0:6c56fb4bc5f0 87 * XTEA key schedule
nexpaq 0:6c56fb4bc5f0 88 */
nexpaq 0:6c56fb4bc5f0 89 void mbedtls_xtea_setup( mbedtls_xtea_context *ctx, const unsigned char key[16] )
nexpaq 0:6c56fb4bc5f0 90 {
nexpaq 0:6c56fb4bc5f0 91 int i;
nexpaq 0:6c56fb4bc5f0 92
nexpaq 0:6c56fb4bc5f0 93 memset( ctx, 0, sizeof(mbedtls_xtea_context) );
nexpaq 0:6c56fb4bc5f0 94
nexpaq 0:6c56fb4bc5f0 95 for( i = 0; i < 4; i++ )
nexpaq 0:6c56fb4bc5f0 96 {
nexpaq 0:6c56fb4bc5f0 97 GET_UINT32_BE( ctx->k[i], key, i << 2 );
nexpaq 0:6c56fb4bc5f0 98 }
nexpaq 0:6c56fb4bc5f0 99 }
nexpaq 0:6c56fb4bc5f0 100
nexpaq 0:6c56fb4bc5f0 101 /*
nexpaq 0:6c56fb4bc5f0 102 * XTEA encrypt function
nexpaq 0:6c56fb4bc5f0 103 */
nexpaq 0:6c56fb4bc5f0 104 int mbedtls_xtea_crypt_ecb( mbedtls_xtea_context *ctx, int mode,
nexpaq 0:6c56fb4bc5f0 105 const unsigned char input[8], unsigned char output[8])
nexpaq 0:6c56fb4bc5f0 106 {
nexpaq 0:6c56fb4bc5f0 107 uint32_t *k, v0, v1, i;
nexpaq 0:6c56fb4bc5f0 108
nexpaq 0:6c56fb4bc5f0 109 k = ctx->k;
nexpaq 0:6c56fb4bc5f0 110
nexpaq 0:6c56fb4bc5f0 111 GET_UINT32_BE( v0, input, 0 );
nexpaq 0:6c56fb4bc5f0 112 GET_UINT32_BE( v1, input, 4 );
nexpaq 0:6c56fb4bc5f0 113
nexpaq 0:6c56fb4bc5f0 114 if( mode == MBEDTLS_XTEA_ENCRYPT )
nexpaq 0:6c56fb4bc5f0 115 {
nexpaq 0:6c56fb4bc5f0 116 uint32_t sum = 0, delta = 0x9E3779B9;
nexpaq 0:6c56fb4bc5f0 117
nexpaq 0:6c56fb4bc5f0 118 for( i = 0; i < 32; i++ )
nexpaq 0:6c56fb4bc5f0 119 {
nexpaq 0:6c56fb4bc5f0 120 v0 += (((v1 << 4) ^ (v1 >> 5)) + v1) ^ (sum + k[sum & 3]);
nexpaq 0:6c56fb4bc5f0 121 sum += delta;
nexpaq 0:6c56fb4bc5f0 122 v1 += (((v0 << 4) ^ (v0 >> 5)) + v0) ^ (sum + k[(sum>>11) & 3]);
nexpaq 0:6c56fb4bc5f0 123 }
nexpaq 0:6c56fb4bc5f0 124 }
nexpaq 0:6c56fb4bc5f0 125 else /* MBEDTLS_XTEA_DECRYPT */
nexpaq 0:6c56fb4bc5f0 126 {
nexpaq 0:6c56fb4bc5f0 127 uint32_t delta = 0x9E3779B9, sum = delta * 32;
nexpaq 0:6c56fb4bc5f0 128
nexpaq 0:6c56fb4bc5f0 129 for( i = 0; i < 32; i++ )
nexpaq 0:6c56fb4bc5f0 130 {
nexpaq 0:6c56fb4bc5f0 131 v1 -= (((v0 << 4) ^ (v0 >> 5)) + v0) ^ (sum + k[(sum>>11) & 3]);
nexpaq 0:6c56fb4bc5f0 132 sum -= delta;
nexpaq 0:6c56fb4bc5f0 133 v0 -= (((v1 << 4) ^ (v1 >> 5)) + v1) ^ (sum + k[sum & 3]);
nexpaq 0:6c56fb4bc5f0 134 }
nexpaq 0:6c56fb4bc5f0 135 }
nexpaq 0:6c56fb4bc5f0 136
nexpaq 0:6c56fb4bc5f0 137 PUT_UINT32_BE( v0, output, 0 );
nexpaq 0:6c56fb4bc5f0 138 PUT_UINT32_BE( v1, output, 4 );
nexpaq 0:6c56fb4bc5f0 139
nexpaq 0:6c56fb4bc5f0 140 return( 0 );
nexpaq 0:6c56fb4bc5f0 141 }
nexpaq 0:6c56fb4bc5f0 142
nexpaq 0:6c56fb4bc5f0 143 #if defined(MBEDTLS_CIPHER_MODE_CBC)
nexpaq 0:6c56fb4bc5f0 144 /*
nexpaq 0:6c56fb4bc5f0 145 * XTEA-CBC buffer encryption/decryption
nexpaq 0:6c56fb4bc5f0 146 */
nexpaq 0:6c56fb4bc5f0 147 int mbedtls_xtea_crypt_cbc( mbedtls_xtea_context *ctx, int mode, size_t length,
nexpaq 0:6c56fb4bc5f0 148 unsigned char iv[8], const unsigned char *input,
nexpaq 0:6c56fb4bc5f0 149 unsigned char *output)
nexpaq 0:6c56fb4bc5f0 150 {
nexpaq 0:6c56fb4bc5f0 151 int i;
nexpaq 0:6c56fb4bc5f0 152 unsigned char temp[8];
nexpaq 0:6c56fb4bc5f0 153
nexpaq 0:6c56fb4bc5f0 154 if( length % 8 )
nexpaq 0:6c56fb4bc5f0 155 return( MBEDTLS_ERR_XTEA_INVALID_INPUT_LENGTH );
nexpaq 0:6c56fb4bc5f0 156
nexpaq 0:6c56fb4bc5f0 157 if( mode == MBEDTLS_XTEA_DECRYPT )
nexpaq 0:6c56fb4bc5f0 158 {
nexpaq 0:6c56fb4bc5f0 159 while( length > 0 )
nexpaq 0:6c56fb4bc5f0 160 {
nexpaq 0:6c56fb4bc5f0 161 memcpy( temp, input, 8 );
nexpaq 0:6c56fb4bc5f0 162 mbedtls_xtea_crypt_ecb( ctx, mode, input, output );
nexpaq 0:6c56fb4bc5f0 163
nexpaq 0:6c56fb4bc5f0 164 for( i = 0; i < 8; i++ )
nexpaq 0:6c56fb4bc5f0 165 output[i] = (unsigned char)( output[i] ^ iv[i] );
nexpaq 0:6c56fb4bc5f0 166
nexpaq 0:6c56fb4bc5f0 167 memcpy( iv, temp, 8 );
nexpaq 0:6c56fb4bc5f0 168
nexpaq 0:6c56fb4bc5f0 169 input += 8;
nexpaq 0:6c56fb4bc5f0 170 output += 8;
nexpaq 0:6c56fb4bc5f0 171 length -= 8;
nexpaq 0:6c56fb4bc5f0 172 }
nexpaq 0:6c56fb4bc5f0 173 }
nexpaq 0:6c56fb4bc5f0 174 else
nexpaq 0:6c56fb4bc5f0 175 {
nexpaq 0:6c56fb4bc5f0 176 while( length > 0 )
nexpaq 0:6c56fb4bc5f0 177 {
nexpaq 0:6c56fb4bc5f0 178 for( i = 0; i < 8; i++ )
nexpaq 0:6c56fb4bc5f0 179 output[i] = (unsigned char)( input[i] ^ iv[i] );
nexpaq 0:6c56fb4bc5f0 180
nexpaq 0:6c56fb4bc5f0 181 mbedtls_xtea_crypt_ecb( ctx, mode, output, output );
nexpaq 0:6c56fb4bc5f0 182 memcpy( iv, output, 8 );
nexpaq 0:6c56fb4bc5f0 183
nexpaq 0:6c56fb4bc5f0 184 input += 8;
nexpaq 0:6c56fb4bc5f0 185 output += 8;
nexpaq 0:6c56fb4bc5f0 186 length -= 8;
nexpaq 0:6c56fb4bc5f0 187 }
nexpaq 0:6c56fb4bc5f0 188 }
nexpaq 0:6c56fb4bc5f0 189
nexpaq 0:6c56fb4bc5f0 190 return( 0 );
nexpaq 0:6c56fb4bc5f0 191 }
nexpaq 0:6c56fb4bc5f0 192 #endif /* MBEDTLS_CIPHER_MODE_CBC */
nexpaq 0:6c56fb4bc5f0 193 #endif /* !MBEDTLS_XTEA_ALT */
nexpaq 0:6c56fb4bc5f0 194
nexpaq 0:6c56fb4bc5f0 195 #if defined(MBEDTLS_SELF_TEST)
nexpaq 0:6c56fb4bc5f0 196
nexpaq 0:6c56fb4bc5f0 197 /*
nexpaq 0:6c56fb4bc5f0 198 * XTEA tests vectors (non-official)
nexpaq 0:6c56fb4bc5f0 199 */
nexpaq 0:6c56fb4bc5f0 200
nexpaq 0:6c56fb4bc5f0 201 static const unsigned char xtea_test_key[6][16] =
nexpaq 0:6c56fb4bc5f0 202 {
nexpaq 0:6c56fb4bc5f0 203 { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b,
nexpaq 0:6c56fb4bc5f0 204 0x0c, 0x0d, 0x0e, 0x0f },
nexpaq 0:6c56fb4bc5f0 205 { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b,
nexpaq 0:6c56fb4bc5f0 206 0x0c, 0x0d, 0x0e, 0x0f },
nexpaq 0:6c56fb4bc5f0 207 { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b,
nexpaq 0:6c56fb4bc5f0 208 0x0c, 0x0d, 0x0e, 0x0f },
nexpaq 0:6c56fb4bc5f0 209 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
nexpaq 0:6c56fb4bc5f0 210 0x00, 0x00, 0x00, 0x00 },
nexpaq 0:6c56fb4bc5f0 211 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
nexpaq 0:6c56fb4bc5f0 212 0x00, 0x00, 0x00, 0x00 },
nexpaq 0:6c56fb4bc5f0 213 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
nexpaq 0:6c56fb4bc5f0 214 0x00, 0x00, 0x00, 0x00 }
nexpaq 0:6c56fb4bc5f0 215 };
nexpaq 0:6c56fb4bc5f0 216
nexpaq 0:6c56fb4bc5f0 217 static const unsigned char xtea_test_pt[6][8] =
nexpaq 0:6c56fb4bc5f0 218 {
nexpaq 0:6c56fb4bc5f0 219 { 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48 },
nexpaq 0:6c56fb4bc5f0 220 { 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41 },
nexpaq 0:6c56fb4bc5f0 221 { 0x5a, 0x5b, 0x6e, 0x27, 0x89, 0x48, 0xd7, 0x7f },
nexpaq 0:6c56fb4bc5f0 222 { 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48 },
nexpaq 0:6c56fb4bc5f0 223 { 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41 },
nexpaq 0:6c56fb4bc5f0 224 { 0x70, 0xe1, 0x22, 0x5d, 0x6e, 0x4e, 0x76, 0x55 }
nexpaq 0:6c56fb4bc5f0 225 };
nexpaq 0:6c56fb4bc5f0 226
nexpaq 0:6c56fb4bc5f0 227 static const unsigned char xtea_test_ct[6][8] =
nexpaq 0:6c56fb4bc5f0 228 {
nexpaq 0:6c56fb4bc5f0 229 { 0x49, 0x7d, 0xf3, 0xd0, 0x72, 0x61, 0x2c, 0xb5 },
nexpaq 0:6c56fb4bc5f0 230 { 0xe7, 0x8f, 0x2d, 0x13, 0x74, 0x43, 0x41, 0xd8 },
nexpaq 0:6c56fb4bc5f0 231 { 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41 },
nexpaq 0:6c56fb4bc5f0 232 { 0xa0, 0x39, 0x05, 0x89, 0xf8, 0xb8, 0xef, 0xa5 },
nexpaq 0:6c56fb4bc5f0 233 { 0xed, 0x23, 0x37, 0x5a, 0x82, 0x1a, 0x8c, 0x2d },
nexpaq 0:6c56fb4bc5f0 234 { 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41 }
nexpaq 0:6c56fb4bc5f0 235 };
nexpaq 0:6c56fb4bc5f0 236
nexpaq 0:6c56fb4bc5f0 237 /*
nexpaq 0:6c56fb4bc5f0 238 * Checkup routine
nexpaq 0:6c56fb4bc5f0 239 */
nexpaq 0:6c56fb4bc5f0 240 int mbedtls_xtea_self_test( int verbose )
nexpaq 0:6c56fb4bc5f0 241 {
nexpaq 0:6c56fb4bc5f0 242 int i, ret = 0;
nexpaq 0:6c56fb4bc5f0 243 unsigned char buf[8];
nexpaq 0:6c56fb4bc5f0 244 mbedtls_xtea_context ctx;
nexpaq 0:6c56fb4bc5f0 245
nexpaq 0:6c56fb4bc5f0 246 mbedtls_xtea_init( &ctx );
nexpaq 0:6c56fb4bc5f0 247 for( i = 0; i < 6; i++ )
nexpaq 0:6c56fb4bc5f0 248 {
nexpaq 0:6c56fb4bc5f0 249 if( verbose != 0 )
nexpaq 0:6c56fb4bc5f0 250 mbedtls_printf( " XTEA test #%d: ", i + 1 );
nexpaq 0:6c56fb4bc5f0 251
nexpaq 0:6c56fb4bc5f0 252 memcpy( buf, xtea_test_pt[i], 8 );
nexpaq 0:6c56fb4bc5f0 253
nexpaq 0:6c56fb4bc5f0 254 mbedtls_xtea_setup( &ctx, xtea_test_key[i] );
nexpaq 0:6c56fb4bc5f0 255 mbedtls_xtea_crypt_ecb( &ctx, MBEDTLS_XTEA_ENCRYPT, buf, buf );
nexpaq 0:6c56fb4bc5f0 256
nexpaq 0:6c56fb4bc5f0 257 if( memcmp( buf, xtea_test_ct[i], 8 ) != 0 )
nexpaq 0:6c56fb4bc5f0 258 {
nexpaq 0:6c56fb4bc5f0 259 if( verbose != 0 )
nexpaq 0:6c56fb4bc5f0 260 mbedtls_printf( "failed\n" );
nexpaq 0:6c56fb4bc5f0 261
nexpaq 0:6c56fb4bc5f0 262 ret = 1;
nexpaq 0:6c56fb4bc5f0 263 goto exit;
nexpaq 0:6c56fb4bc5f0 264 }
nexpaq 0:6c56fb4bc5f0 265
nexpaq 0:6c56fb4bc5f0 266 if( verbose != 0 )
nexpaq 0:6c56fb4bc5f0 267 mbedtls_printf( "passed\n" );
nexpaq 0:6c56fb4bc5f0 268 }
nexpaq 0:6c56fb4bc5f0 269
nexpaq 0:6c56fb4bc5f0 270 if( verbose != 0 )
nexpaq 0:6c56fb4bc5f0 271 mbedtls_printf( "\n" );
nexpaq 0:6c56fb4bc5f0 272
nexpaq 0:6c56fb4bc5f0 273 exit:
nexpaq 0:6c56fb4bc5f0 274 mbedtls_xtea_free( &ctx );
nexpaq 0:6c56fb4bc5f0 275
nexpaq 0:6c56fb4bc5f0 276 return( ret );
nexpaq 0:6c56fb4bc5f0 277 }
nexpaq 0:6c56fb4bc5f0 278
nexpaq 0:6c56fb4bc5f0 279 #endif /* MBEDTLS_SELF_TEST */
nexpaq 0:6c56fb4bc5f0 280
nexpaq 0:6c56fb4bc5f0 281 #endif /* MBEDTLS_XTEA_C */