Rtos API example

Committer:
marcozecchini
Date:
Sat Feb 23 12:13:36 2019 +0000
Revision:
0:9fca2b23d0ba
final commit

Who changed what in which revision?

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marcozecchini 0:9fca2b23d0ba 1 /*
marcozecchini 0:9fca2b23d0ba 2 * An 32-bit implementation of the XTEA algorithm
marcozecchini 0:9fca2b23d0ba 3 *
marcozecchini 0:9fca2b23d0ba 4 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
marcozecchini 0:9fca2b23d0ba 5 * SPDX-License-Identifier: Apache-2.0
marcozecchini 0:9fca2b23d0ba 6 *
marcozecchini 0:9fca2b23d0ba 7 * Licensed under the Apache License, Version 2.0 (the "License"); you may
marcozecchini 0:9fca2b23d0ba 8 * not use this file except in compliance with the License.
marcozecchini 0:9fca2b23d0ba 9 * You may obtain a copy of the License at
marcozecchini 0:9fca2b23d0ba 10 *
marcozecchini 0:9fca2b23d0ba 11 * http://www.apache.org/licenses/LICENSE-2.0
marcozecchini 0:9fca2b23d0ba 12 *
marcozecchini 0:9fca2b23d0ba 13 * Unless required by applicable law or agreed to in writing, software
marcozecchini 0:9fca2b23d0ba 14 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
marcozecchini 0:9fca2b23d0ba 15 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
marcozecchini 0:9fca2b23d0ba 16 * See the License for the specific language governing permissions and
marcozecchini 0:9fca2b23d0ba 17 * limitations under the License.
marcozecchini 0:9fca2b23d0ba 18 *
marcozecchini 0:9fca2b23d0ba 19 * This file is part of mbed TLS (https://tls.mbed.org)
marcozecchini 0:9fca2b23d0ba 20 */
marcozecchini 0:9fca2b23d0ba 21
marcozecchini 0:9fca2b23d0ba 22 #if !defined(MBEDTLS_CONFIG_FILE)
marcozecchini 0:9fca2b23d0ba 23 #include "mbedtls/config.h"
marcozecchini 0:9fca2b23d0ba 24 #else
marcozecchini 0:9fca2b23d0ba 25 #include MBEDTLS_CONFIG_FILE
marcozecchini 0:9fca2b23d0ba 26 #endif
marcozecchini 0:9fca2b23d0ba 27
marcozecchini 0:9fca2b23d0ba 28 #if defined(MBEDTLS_XTEA_C)
marcozecchini 0:9fca2b23d0ba 29
marcozecchini 0:9fca2b23d0ba 30 #include "mbedtls/xtea.h"
marcozecchini 0:9fca2b23d0ba 31
marcozecchini 0:9fca2b23d0ba 32 #include <string.h>
marcozecchini 0:9fca2b23d0ba 33
marcozecchini 0:9fca2b23d0ba 34 #if defined(MBEDTLS_SELF_TEST)
marcozecchini 0:9fca2b23d0ba 35 #if defined(MBEDTLS_PLATFORM_C)
marcozecchini 0:9fca2b23d0ba 36 #include "mbedtls/platform.h"
marcozecchini 0:9fca2b23d0ba 37 #else
marcozecchini 0:9fca2b23d0ba 38 #include <stdio.h>
marcozecchini 0:9fca2b23d0ba 39 #define mbedtls_printf printf
marcozecchini 0:9fca2b23d0ba 40 #endif /* MBEDTLS_PLATFORM_C */
marcozecchini 0:9fca2b23d0ba 41 #endif /* MBEDTLS_SELF_TEST */
marcozecchini 0:9fca2b23d0ba 42
marcozecchini 0:9fca2b23d0ba 43 #if !defined(MBEDTLS_XTEA_ALT)
marcozecchini 0:9fca2b23d0ba 44
marcozecchini 0:9fca2b23d0ba 45 /* Implementation that should never be optimized out by the compiler */
marcozecchini 0:9fca2b23d0ba 46 static void mbedtls_zeroize( void *v, size_t n ) {
marcozecchini 0:9fca2b23d0ba 47 volatile unsigned char *p = v; while( n-- ) *p++ = 0;
marcozecchini 0:9fca2b23d0ba 48 }
marcozecchini 0:9fca2b23d0ba 49
marcozecchini 0:9fca2b23d0ba 50 /*
marcozecchini 0:9fca2b23d0ba 51 * 32-bit integer manipulation macros (big endian)
marcozecchini 0:9fca2b23d0ba 52 */
marcozecchini 0:9fca2b23d0ba 53 #ifndef GET_UINT32_BE
marcozecchini 0:9fca2b23d0ba 54 #define GET_UINT32_BE(n,b,i) \
marcozecchini 0:9fca2b23d0ba 55 { \
marcozecchini 0:9fca2b23d0ba 56 (n) = ( (uint32_t) (b)[(i) ] << 24 ) \
marcozecchini 0:9fca2b23d0ba 57 | ( (uint32_t) (b)[(i) + 1] << 16 ) \
marcozecchini 0:9fca2b23d0ba 58 | ( (uint32_t) (b)[(i) + 2] << 8 ) \
marcozecchini 0:9fca2b23d0ba 59 | ( (uint32_t) (b)[(i) + 3] ); \
marcozecchini 0:9fca2b23d0ba 60 }
marcozecchini 0:9fca2b23d0ba 61 #endif
marcozecchini 0:9fca2b23d0ba 62
marcozecchini 0:9fca2b23d0ba 63 #ifndef PUT_UINT32_BE
marcozecchini 0:9fca2b23d0ba 64 #define PUT_UINT32_BE(n,b,i) \
marcozecchini 0:9fca2b23d0ba 65 { \
marcozecchini 0:9fca2b23d0ba 66 (b)[(i) ] = (unsigned char) ( (n) >> 24 ); \
marcozecchini 0:9fca2b23d0ba 67 (b)[(i) + 1] = (unsigned char) ( (n) >> 16 ); \
marcozecchini 0:9fca2b23d0ba 68 (b)[(i) + 2] = (unsigned char) ( (n) >> 8 ); \
marcozecchini 0:9fca2b23d0ba 69 (b)[(i) + 3] = (unsigned char) ( (n) ); \
marcozecchini 0:9fca2b23d0ba 70 }
marcozecchini 0:9fca2b23d0ba 71 #endif
marcozecchini 0:9fca2b23d0ba 72
marcozecchini 0:9fca2b23d0ba 73 void mbedtls_xtea_init( mbedtls_xtea_context *ctx )
marcozecchini 0:9fca2b23d0ba 74 {
marcozecchini 0:9fca2b23d0ba 75 memset( ctx, 0, sizeof( mbedtls_xtea_context ) );
marcozecchini 0:9fca2b23d0ba 76 }
marcozecchini 0:9fca2b23d0ba 77
marcozecchini 0:9fca2b23d0ba 78 void mbedtls_xtea_free( mbedtls_xtea_context *ctx )
marcozecchini 0:9fca2b23d0ba 79 {
marcozecchini 0:9fca2b23d0ba 80 if( ctx == NULL )
marcozecchini 0:9fca2b23d0ba 81 return;
marcozecchini 0:9fca2b23d0ba 82
marcozecchini 0:9fca2b23d0ba 83 mbedtls_zeroize( ctx, sizeof( mbedtls_xtea_context ) );
marcozecchini 0:9fca2b23d0ba 84 }
marcozecchini 0:9fca2b23d0ba 85
marcozecchini 0:9fca2b23d0ba 86 /*
marcozecchini 0:9fca2b23d0ba 87 * XTEA key schedule
marcozecchini 0:9fca2b23d0ba 88 */
marcozecchini 0:9fca2b23d0ba 89 void mbedtls_xtea_setup( mbedtls_xtea_context *ctx, const unsigned char key[16] )
marcozecchini 0:9fca2b23d0ba 90 {
marcozecchini 0:9fca2b23d0ba 91 int i;
marcozecchini 0:9fca2b23d0ba 92
marcozecchini 0:9fca2b23d0ba 93 memset( ctx, 0, sizeof(mbedtls_xtea_context) );
marcozecchini 0:9fca2b23d0ba 94
marcozecchini 0:9fca2b23d0ba 95 for( i = 0; i < 4; i++ )
marcozecchini 0:9fca2b23d0ba 96 {
marcozecchini 0:9fca2b23d0ba 97 GET_UINT32_BE( ctx->k[i], key, i << 2 );
marcozecchini 0:9fca2b23d0ba 98 }
marcozecchini 0:9fca2b23d0ba 99 }
marcozecchini 0:9fca2b23d0ba 100
marcozecchini 0:9fca2b23d0ba 101 /*
marcozecchini 0:9fca2b23d0ba 102 * XTEA encrypt function
marcozecchini 0:9fca2b23d0ba 103 */
marcozecchini 0:9fca2b23d0ba 104 int mbedtls_xtea_crypt_ecb( mbedtls_xtea_context *ctx, int mode,
marcozecchini 0:9fca2b23d0ba 105 const unsigned char input[8], unsigned char output[8])
marcozecchini 0:9fca2b23d0ba 106 {
marcozecchini 0:9fca2b23d0ba 107 uint32_t *k, v0, v1, i;
marcozecchini 0:9fca2b23d0ba 108
marcozecchini 0:9fca2b23d0ba 109 k = ctx->k;
marcozecchini 0:9fca2b23d0ba 110
marcozecchini 0:9fca2b23d0ba 111 GET_UINT32_BE( v0, input, 0 );
marcozecchini 0:9fca2b23d0ba 112 GET_UINT32_BE( v1, input, 4 );
marcozecchini 0:9fca2b23d0ba 113
marcozecchini 0:9fca2b23d0ba 114 if( mode == MBEDTLS_XTEA_ENCRYPT )
marcozecchini 0:9fca2b23d0ba 115 {
marcozecchini 0:9fca2b23d0ba 116 uint32_t sum = 0, delta = 0x9E3779B9;
marcozecchini 0:9fca2b23d0ba 117
marcozecchini 0:9fca2b23d0ba 118 for( i = 0; i < 32; i++ )
marcozecchini 0:9fca2b23d0ba 119 {
marcozecchini 0:9fca2b23d0ba 120 v0 += (((v1 << 4) ^ (v1 >> 5)) + v1) ^ (sum + k[sum & 3]);
marcozecchini 0:9fca2b23d0ba 121 sum += delta;
marcozecchini 0:9fca2b23d0ba 122 v1 += (((v0 << 4) ^ (v0 >> 5)) + v0) ^ (sum + k[(sum>>11) & 3]);
marcozecchini 0:9fca2b23d0ba 123 }
marcozecchini 0:9fca2b23d0ba 124 }
marcozecchini 0:9fca2b23d0ba 125 else /* MBEDTLS_XTEA_DECRYPT */
marcozecchini 0:9fca2b23d0ba 126 {
marcozecchini 0:9fca2b23d0ba 127 uint32_t delta = 0x9E3779B9, sum = delta * 32;
marcozecchini 0:9fca2b23d0ba 128
marcozecchini 0:9fca2b23d0ba 129 for( i = 0; i < 32; i++ )
marcozecchini 0:9fca2b23d0ba 130 {
marcozecchini 0:9fca2b23d0ba 131 v1 -= (((v0 << 4) ^ (v0 >> 5)) + v0) ^ (sum + k[(sum>>11) & 3]);
marcozecchini 0:9fca2b23d0ba 132 sum -= delta;
marcozecchini 0:9fca2b23d0ba 133 v0 -= (((v1 << 4) ^ (v1 >> 5)) + v1) ^ (sum + k[sum & 3]);
marcozecchini 0:9fca2b23d0ba 134 }
marcozecchini 0:9fca2b23d0ba 135 }
marcozecchini 0:9fca2b23d0ba 136
marcozecchini 0:9fca2b23d0ba 137 PUT_UINT32_BE( v0, output, 0 );
marcozecchini 0:9fca2b23d0ba 138 PUT_UINT32_BE( v1, output, 4 );
marcozecchini 0:9fca2b23d0ba 139
marcozecchini 0:9fca2b23d0ba 140 return( 0 );
marcozecchini 0:9fca2b23d0ba 141 }
marcozecchini 0:9fca2b23d0ba 142
marcozecchini 0:9fca2b23d0ba 143 #if defined(MBEDTLS_CIPHER_MODE_CBC)
marcozecchini 0:9fca2b23d0ba 144 /*
marcozecchini 0:9fca2b23d0ba 145 * XTEA-CBC buffer encryption/decryption
marcozecchini 0:9fca2b23d0ba 146 */
marcozecchini 0:9fca2b23d0ba 147 int mbedtls_xtea_crypt_cbc( mbedtls_xtea_context *ctx, int mode, size_t length,
marcozecchini 0:9fca2b23d0ba 148 unsigned char iv[8], const unsigned char *input,
marcozecchini 0:9fca2b23d0ba 149 unsigned char *output)
marcozecchini 0:9fca2b23d0ba 150 {
marcozecchini 0:9fca2b23d0ba 151 int i;
marcozecchini 0:9fca2b23d0ba 152 unsigned char temp[8];
marcozecchini 0:9fca2b23d0ba 153
marcozecchini 0:9fca2b23d0ba 154 if( length % 8 )
marcozecchini 0:9fca2b23d0ba 155 return( MBEDTLS_ERR_XTEA_INVALID_INPUT_LENGTH );
marcozecchini 0:9fca2b23d0ba 156
marcozecchini 0:9fca2b23d0ba 157 if( mode == MBEDTLS_XTEA_DECRYPT )
marcozecchini 0:9fca2b23d0ba 158 {
marcozecchini 0:9fca2b23d0ba 159 while( length > 0 )
marcozecchini 0:9fca2b23d0ba 160 {
marcozecchini 0:9fca2b23d0ba 161 memcpy( temp, input, 8 );
marcozecchini 0:9fca2b23d0ba 162 mbedtls_xtea_crypt_ecb( ctx, mode, input, output );
marcozecchini 0:9fca2b23d0ba 163
marcozecchini 0:9fca2b23d0ba 164 for( i = 0; i < 8; i++ )
marcozecchini 0:9fca2b23d0ba 165 output[i] = (unsigned char)( output[i] ^ iv[i] );
marcozecchini 0:9fca2b23d0ba 166
marcozecchini 0:9fca2b23d0ba 167 memcpy( iv, temp, 8 );
marcozecchini 0:9fca2b23d0ba 168
marcozecchini 0:9fca2b23d0ba 169 input += 8;
marcozecchini 0:9fca2b23d0ba 170 output += 8;
marcozecchini 0:9fca2b23d0ba 171 length -= 8;
marcozecchini 0:9fca2b23d0ba 172 }
marcozecchini 0:9fca2b23d0ba 173 }
marcozecchini 0:9fca2b23d0ba 174 else
marcozecchini 0:9fca2b23d0ba 175 {
marcozecchini 0:9fca2b23d0ba 176 while( length > 0 )
marcozecchini 0:9fca2b23d0ba 177 {
marcozecchini 0:9fca2b23d0ba 178 for( i = 0; i < 8; i++ )
marcozecchini 0:9fca2b23d0ba 179 output[i] = (unsigned char)( input[i] ^ iv[i] );
marcozecchini 0:9fca2b23d0ba 180
marcozecchini 0:9fca2b23d0ba 181 mbedtls_xtea_crypt_ecb( ctx, mode, output, output );
marcozecchini 0:9fca2b23d0ba 182 memcpy( iv, output, 8 );
marcozecchini 0:9fca2b23d0ba 183
marcozecchini 0:9fca2b23d0ba 184 input += 8;
marcozecchini 0:9fca2b23d0ba 185 output += 8;
marcozecchini 0:9fca2b23d0ba 186 length -= 8;
marcozecchini 0:9fca2b23d0ba 187 }
marcozecchini 0:9fca2b23d0ba 188 }
marcozecchini 0:9fca2b23d0ba 189
marcozecchini 0:9fca2b23d0ba 190 return( 0 );
marcozecchini 0:9fca2b23d0ba 191 }
marcozecchini 0:9fca2b23d0ba 192 #endif /* MBEDTLS_CIPHER_MODE_CBC */
marcozecchini 0:9fca2b23d0ba 193 #endif /* !MBEDTLS_XTEA_ALT */
marcozecchini 0:9fca2b23d0ba 194
marcozecchini 0:9fca2b23d0ba 195 #if defined(MBEDTLS_SELF_TEST)
marcozecchini 0:9fca2b23d0ba 196
marcozecchini 0:9fca2b23d0ba 197 /*
marcozecchini 0:9fca2b23d0ba 198 * XTEA tests vectors (non-official)
marcozecchini 0:9fca2b23d0ba 199 */
marcozecchini 0:9fca2b23d0ba 200
marcozecchini 0:9fca2b23d0ba 201 static const unsigned char xtea_test_key[6][16] =
marcozecchini 0:9fca2b23d0ba 202 {
marcozecchini 0:9fca2b23d0ba 203 { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b,
marcozecchini 0:9fca2b23d0ba 204 0x0c, 0x0d, 0x0e, 0x0f },
marcozecchini 0:9fca2b23d0ba 205 { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b,
marcozecchini 0:9fca2b23d0ba 206 0x0c, 0x0d, 0x0e, 0x0f },
marcozecchini 0:9fca2b23d0ba 207 { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b,
marcozecchini 0:9fca2b23d0ba 208 0x0c, 0x0d, 0x0e, 0x0f },
marcozecchini 0:9fca2b23d0ba 209 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
marcozecchini 0:9fca2b23d0ba 210 0x00, 0x00, 0x00, 0x00 },
marcozecchini 0:9fca2b23d0ba 211 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
marcozecchini 0:9fca2b23d0ba 212 0x00, 0x00, 0x00, 0x00 },
marcozecchini 0:9fca2b23d0ba 213 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
marcozecchini 0:9fca2b23d0ba 214 0x00, 0x00, 0x00, 0x00 }
marcozecchini 0:9fca2b23d0ba 215 };
marcozecchini 0:9fca2b23d0ba 216
marcozecchini 0:9fca2b23d0ba 217 static const unsigned char xtea_test_pt[6][8] =
marcozecchini 0:9fca2b23d0ba 218 {
marcozecchini 0:9fca2b23d0ba 219 { 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48 },
marcozecchini 0:9fca2b23d0ba 220 { 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41 },
marcozecchini 0:9fca2b23d0ba 221 { 0x5a, 0x5b, 0x6e, 0x27, 0x89, 0x48, 0xd7, 0x7f },
marcozecchini 0:9fca2b23d0ba 222 { 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48 },
marcozecchini 0:9fca2b23d0ba 223 { 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41 },
marcozecchini 0:9fca2b23d0ba 224 { 0x70, 0xe1, 0x22, 0x5d, 0x6e, 0x4e, 0x76, 0x55 }
marcozecchini 0:9fca2b23d0ba 225 };
marcozecchini 0:9fca2b23d0ba 226
marcozecchini 0:9fca2b23d0ba 227 static const unsigned char xtea_test_ct[6][8] =
marcozecchini 0:9fca2b23d0ba 228 {
marcozecchini 0:9fca2b23d0ba 229 { 0x49, 0x7d, 0xf3, 0xd0, 0x72, 0x61, 0x2c, 0xb5 },
marcozecchini 0:9fca2b23d0ba 230 { 0xe7, 0x8f, 0x2d, 0x13, 0x74, 0x43, 0x41, 0xd8 },
marcozecchini 0:9fca2b23d0ba 231 { 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41 },
marcozecchini 0:9fca2b23d0ba 232 { 0xa0, 0x39, 0x05, 0x89, 0xf8, 0xb8, 0xef, 0xa5 },
marcozecchini 0:9fca2b23d0ba 233 { 0xed, 0x23, 0x37, 0x5a, 0x82, 0x1a, 0x8c, 0x2d },
marcozecchini 0:9fca2b23d0ba 234 { 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41 }
marcozecchini 0:9fca2b23d0ba 235 };
marcozecchini 0:9fca2b23d0ba 236
marcozecchini 0:9fca2b23d0ba 237 /*
marcozecchini 0:9fca2b23d0ba 238 * Checkup routine
marcozecchini 0:9fca2b23d0ba 239 */
marcozecchini 0:9fca2b23d0ba 240 int mbedtls_xtea_self_test( int verbose )
marcozecchini 0:9fca2b23d0ba 241 {
marcozecchini 0:9fca2b23d0ba 242 int i, ret = 0;
marcozecchini 0:9fca2b23d0ba 243 unsigned char buf[8];
marcozecchini 0:9fca2b23d0ba 244 mbedtls_xtea_context ctx;
marcozecchini 0:9fca2b23d0ba 245
marcozecchini 0:9fca2b23d0ba 246 mbedtls_xtea_init( &ctx );
marcozecchini 0:9fca2b23d0ba 247 for( i = 0; i < 6; i++ )
marcozecchini 0:9fca2b23d0ba 248 {
marcozecchini 0:9fca2b23d0ba 249 if( verbose != 0 )
marcozecchini 0:9fca2b23d0ba 250 mbedtls_printf( " XTEA test #%d: ", i + 1 );
marcozecchini 0:9fca2b23d0ba 251
marcozecchini 0:9fca2b23d0ba 252 memcpy( buf, xtea_test_pt[i], 8 );
marcozecchini 0:9fca2b23d0ba 253
marcozecchini 0:9fca2b23d0ba 254 mbedtls_xtea_setup( &ctx, xtea_test_key[i] );
marcozecchini 0:9fca2b23d0ba 255 mbedtls_xtea_crypt_ecb( &ctx, MBEDTLS_XTEA_ENCRYPT, buf, buf );
marcozecchini 0:9fca2b23d0ba 256
marcozecchini 0:9fca2b23d0ba 257 if( memcmp( buf, xtea_test_ct[i], 8 ) != 0 )
marcozecchini 0:9fca2b23d0ba 258 {
marcozecchini 0:9fca2b23d0ba 259 if( verbose != 0 )
marcozecchini 0:9fca2b23d0ba 260 mbedtls_printf( "failed\n" );
marcozecchini 0:9fca2b23d0ba 261
marcozecchini 0:9fca2b23d0ba 262 ret = 1;
marcozecchini 0:9fca2b23d0ba 263 goto exit;
marcozecchini 0:9fca2b23d0ba 264 }
marcozecchini 0:9fca2b23d0ba 265
marcozecchini 0:9fca2b23d0ba 266 if( verbose != 0 )
marcozecchini 0:9fca2b23d0ba 267 mbedtls_printf( "passed\n" );
marcozecchini 0:9fca2b23d0ba 268 }
marcozecchini 0:9fca2b23d0ba 269
marcozecchini 0:9fca2b23d0ba 270 if( verbose != 0 )
marcozecchini 0:9fca2b23d0ba 271 mbedtls_printf( "\n" );
marcozecchini 0:9fca2b23d0ba 272
marcozecchini 0:9fca2b23d0ba 273 exit:
marcozecchini 0:9fca2b23d0ba 274 mbedtls_xtea_free( &ctx );
marcozecchini 0:9fca2b23d0ba 275
marcozecchini 0:9fca2b23d0ba 276 return( ret );
marcozecchini 0:9fca2b23d0ba 277 }
marcozecchini 0:9fca2b23d0ba 278
marcozecchini 0:9fca2b23d0ba 279 #endif /* MBEDTLS_SELF_TEST */
marcozecchini 0:9fca2b23d0ba 280
marcozecchini 0:9fca2b23d0ba 281 #endif /* MBEDTLS_XTEA_C */