Timothy Beight / Mbed 2 deprecated 6_songs-from-the-cloud

This is a fork due to permission issues

Dependencies:   mbed Socket lwip-eth lwip-sys lwip

Fork of 6_songs-from-the-cloud by MakingMusicWorkshop

mbed-client/mbedtls/source/xtea.c@0:f7c60d3e7b8a, 2016-05-18 (annotated)

Committer:
maclobdell
Date:
Wed May 18 19:06:32 2016 +0000
Revision:
0:f7c60d3e7b8a
clean version

Who changed what in which revision?

UserRevisionLine numberNew contents of line
maclobdell 0:f7c60d3e7b8a 1 /*
maclobdell 0:f7c60d3e7b8a 2 * An 32-bit implementation of the XTEA algorithm
maclobdell 0:f7c60d3e7b8a 3 *
maclobdell 0:f7c60d3e7b8a 4 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
maclobdell 0:f7c60d3e7b8a 5 * SPDX-License-Identifier: Apache-2.0
maclobdell 0:f7c60d3e7b8a 6 *
maclobdell 0:f7c60d3e7b8a 7 * Licensed under the Apache License, Version 2.0 (the "License"); you may
maclobdell 0:f7c60d3e7b8a 8 * not use this file except in compliance with the License.
maclobdell 0:f7c60d3e7b8a 9 * You may obtain a copy of the License at
maclobdell 0:f7c60d3e7b8a 10 *
maclobdell 0:f7c60d3e7b8a 11 * http://www.apache.org/licenses/LICENSE-2.0
maclobdell 0:f7c60d3e7b8a 12 *
maclobdell 0:f7c60d3e7b8a 13 * Unless required by applicable law or agreed to in writing, software
maclobdell 0:f7c60d3e7b8a 14 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
maclobdell 0:f7c60d3e7b8a 15 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
maclobdell 0:f7c60d3e7b8a 16 * See the License for the specific language governing permissions and
maclobdell 0:f7c60d3e7b8a 17 * limitations under the License.
maclobdell 0:f7c60d3e7b8a 18 *
maclobdell 0:f7c60d3e7b8a 19 * This file is part of mbed TLS (https://tls.mbed.org)
maclobdell 0:f7c60d3e7b8a 20 */
maclobdell 0:f7c60d3e7b8a 21
maclobdell 0:f7c60d3e7b8a 22 #if !defined(MBEDTLS_CONFIG_FILE)
maclobdell 0:f7c60d3e7b8a 23 #include "mbedtls/config.h"
maclobdell 0:f7c60d3e7b8a 24 #else
maclobdell 0:f7c60d3e7b8a 25 #include MBEDTLS_CONFIG_FILE
maclobdell 0:f7c60d3e7b8a 26 #endif
maclobdell 0:f7c60d3e7b8a 27
maclobdell 0:f7c60d3e7b8a 28 #if defined(MBEDTLS_XTEA_C)
maclobdell 0:f7c60d3e7b8a 29
maclobdell 0:f7c60d3e7b8a 30 #include "mbedtls/xtea.h"
maclobdell 0:f7c60d3e7b8a 31
maclobdell 0:f7c60d3e7b8a 32 #include <string.h>
maclobdell 0:f7c60d3e7b8a 33
maclobdell 0:f7c60d3e7b8a 34 #if defined(MBEDTLS_SELF_TEST)
maclobdell 0:f7c60d3e7b8a 35 #if defined(MBEDTLS_PLATFORM_C)
maclobdell 0:f7c60d3e7b8a 36 #include "mbedtls/platform.h"
maclobdell 0:f7c60d3e7b8a 37 #else
maclobdell 0:f7c60d3e7b8a 38 #include <stdio.h>
maclobdell 0:f7c60d3e7b8a 39 #define mbedtls_printf printf
maclobdell 0:f7c60d3e7b8a 40 #endif /* MBEDTLS_PLATFORM_C */
maclobdell 0:f7c60d3e7b8a 41 #endif /* MBEDTLS_SELF_TEST */
maclobdell 0:f7c60d3e7b8a 42
maclobdell 0:f7c60d3e7b8a 43 #if !defined(MBEDTLS_XTEA_ALT)
maclobdell 0:f7c60d3e7b8a 44
maclobdell 0:f7c60d3e7b8a 45 /* Implementation that should never be optimized out by the compiler */
maclobdell 0:f7c60d3e7b8a 46 static void mbedtls_zeroize( void *v, size_t n ) {
maclobdell 0:f7c60d3e7b8a 47 volatile unsigned char *p = v; while( n-- ) *p++ = 0;
maclobdell 0:f7c60d3e7b8a 48 }
maclobdell 0:f7c60d3e7b8a 49
maclobdell 0:f7c60d3e7b8a 50 /*
maclobdell 0:f7c60d3e7b8a 51 * 32-bit integer manipulation macros (big endian)
maclobdell 0:f7c60d3e7b8a 52 */
maclobdell 0:f7c60d3e7b8a 53 #ifndef GET_UINT32_BE
maclobdell 0:f7c60d3e7b8a 54 #define GET_UINT32_BE(n,b,i) \
maclobdell 0:f7c60d3e7b8a 55 { \
maclobdell 0:f7c60d3e7b8a 56 (n) = ( (uint32_t) (b)[(i) ] << 24 ) \
maclobdell 0:f7c60d3e7b8a 57 | ( (uint32_t) (b)[(i) + 1] << 16 ) \
maclobdell 0:f7c60d3e7b8a 58 | ( (uint32_t) (b)[(i) + 2] << 8 ) \
maclobdell 0:f7c60d3e7b8a 59 | ( (uint32_t) (b)[(i) + 3] ); \
maclobdell 0:f7c60d3e7b8a 60 }
maclobdell 0:f7c60d3e7b8a 61 #endif
maclobdell 0:f7c60d3e7b8a 62
maclobdell 0:f7c60d3e7b8a 63 #ifndef PUT_UINT32_BE
maclobdell 0:f7c60d3e7b8a 64 #define PUT_UINT32_BE(n,b,i) \
maclobdell 0:f7c60d3e7b8a 65 { \
maclobdell 0:f7c60d3e7b8a 66 (b)[(i) ] = (unsigned char) ( (n) >> 24 ); \
maclobdell 0:f7c60d3e7b8a 67 (b)[(i) + 1] = (unsigned char) ( (n) >> 16 ); \
maclobdell 0:f7c60d3e7b8a 68 (b)[(i) + 2] = (unsigned char) ( (n) >> 8 ); \
maclobdell 0:f7c60d3e7b8a 69 (b)[(i) + 3] = (unsigned char) ( (n) ); \
maclobdell 0:f7c60d3e7b8a 70 }
maclobdell 0:f7c60d3e7b8a 71 #endif
maclobdell 0:f7c60d3e7b8a 72
maclobdell 0:f7c60d3e7b8a 73 void mbedtls_xtea_init( mbedtls_xtea_context *ctx )
maclobdell 0:f7c60d3e7b8a 74 {
maclobdell 0:f7c60d3e7b8a 75 memset( ctx, 0, sizeof( mbedtls_xtea_context ) );
maclobdell 0:f7c60d3e7b8a 76 }
maclobdell 0:f7c60d3e7b8a 77
maclobdell 0:f7c60d3e7b8a 78 void mbedtls_xtea_free( mbedtls_xtea_context *ctx )
maclobdell 0:f7c60d3e7b8a 79 {
maclobdell 0:f7c60d3e7b8a 80 if( ctx == NULL )
maclobdell 0:f7c60d3e7b8a 81 return;
maclobdell 0:f7c60d3e7b8a 82
maclobdell 0:f7c60d3e7b8a 83 mbedtls_zeroize( ctx, sizeof( mbedtls_xtea_context ) );
maclobdell 0:f7c60d3e7b8a 84 }
maclobdell 0:f7c60d3e7b8a 85
maclobdell 0:f7c60d3e7b8a 86 /*
maclobdell 0:f7c60d3e7b8a 87 * XTEA key schedule
maclobdell 0:f7c60d3e7b8a 88 */
maclobdell 0:f7c60d3e7b8a 89 void mbedtls_xtea_setup( mbedtls_xtea_context *ctx, const unsigned char key[16] )
maclobdell 0:f7c60d3e7b8a 90 {
maclobdell 0:f7c60d3e7b8a 91 int i;
maclobdell 0:f7c60d3e7b8a 92
maclobdell 0:f7c60d3e7b8a 93 memset( ctx, 0, sizeof(mbedtls_xtea_context) );
maclobdell 0:f7c60d3e7b8a 94
maclobdell 0:f7c60d3e7b8a 95 for( i = 0; i < 4; i++ )
maclobdell 0:f7c60d3e7b8a 96 {
maclobdell 0:f7c60d3e7b8a 97 GET_UINT32_BE( ctx->k[i], key, i << 2 );
maclobdell 0:f7c60d3e7b8a 98 }
maclobdell 0:f7c60d3e7b8a 99 }
maclobdell 0:f7c60d3e7b8a 100
maclobdell 0:f7c60d3e7b8a 101 /*
maclobdell 0:f7c60d3e7b8a 102 * XTEA encrypt function
maclobdell 0:f7c60d3e7b8a 103 */
maclobdell 0:f7c60d3e7b8a 104 int mbedtls_xtea_crypt_ecb( mbedtls_xtea_context *ctx, int mode,
maclobdell 0:f7c60d3e7b8a 105 const unsigned char input[8], unsigned char output[8])
maclobdell 0:f7c60d3e7b8a 106 {
maclobdell 0:f7c60d3e7b8a 107 uint32_t *k, v0, v1, i;
maclobdell 0:f7c60d3e7b8a 108
maclobdell 0:f7c60d3e7b8a 109 k = ctx->k;
maclobdell 0:f7c60d3e7b8a 110
maclobdell 0:f7c60d3e7b8a 111 GET_UINT32_BE( v0, input, 0 );
maclobdell 0:f7c60d3e7b8a 112 GET_UINT32_BE( v1, input, 4 );
maclobdell 0:f7c60d3e7b8a 113
maclobdell 0:f7c60d3e7b8a 114 if( mode == MBEDTLS_XTEA_ENCRYPT )
maclobdell 0:f7c60d3e7b8a 115 {
maclobdell 0:f7c60d3e7b8a 116 uint32_t sum = 0, delta = 0x9E3779B9;
maclobdell 0:f7c60d3e7b8a 117
maclobdell 0:f7c60d3e7b8a 118 for( i = 0; i < 32; i++ )
maclobdell 0:f7c60d3e7b8a 119 {
maclobdell 0:f7c60d3e7b8a 120 v0 += (((v1 << 4) ^ (v1 >> 5)) + v1) ^ (sum + k[sum & 3]);
maclobdell 0:f7c60d3e7b8a 121 sum += delta;
maclobdell 0:f7c60d3e7b8a 122 v1 += (((v0 << 4) ^ (v0 >> 5)) + v0) ^ (sum + k[(sum>>11) & 3]);
maclobdell 0:f7c60d3e7b8a 123 }
maclobdell 0:f7c60d3e7b8a 124 }
maclobdell 0:f7c60d3e7b8a 125 else /* MBEDTLS_XTEA_DECRYPT */
maclobdell 0:f7c60d3e7b8a 126 {
maclobdell 0:f7c60d3e7b8a 127 uint32_t delta = 0x9E3779B9, sum = delta * 32;
maclobdell 0:f7c60d3e7b8a 128
maclobdell 0:f7c60d3e7b8a 129 for( i = 0; i < 32; i++ )
maclobdell 0:f7c60d3e7b8a 130 {
maclobdell 0:f7c60d3e7b8a 131 v1 -= (((v0 << 4) ^ (v0 >> 5)) + v0) ^ (sum + k[(sum>>11) & 3]);
maclobdell 0:f7c60d3e7b8a 132 sum -= delta;
maclobdell 0:f7c60d3e7b8a 133 v0 -= (((v1 << 4) ^ (v1 >> 5)) + v1) ^ (sum + k[sum & 3]);
maclobdell 0:f7c60d3e7b8a 134 }
maclobdell 0:f7c60d3e7b8a 135 }
maclobdell 0:f7c60d3e7b8a 136
maclobdell 0:f7c60d3e7b8a 137 PUT_UINT32_BE( v0, output, 0 );
maclobdell 0:f7c60d3e7b8a 138 PUT_UINT32_BE( v1, output, 4 );
maclobdell 0:f7c60d3e7b8a 139
maclobdell 0:f7c60d3e7b8a 140 return( 0 );
maclobdell 0:f7c60d3e7b8a 141 }
maclobdell 0:f7c60d3e7b8a 142
maclobdell 0:f7c60d3e7b8a 143 #if defined(MBEDTLS_CIPHER_MODE_CBC)
maclobdell 0:f7c60d3e7b8a 144 /*
maclobdell 0:f7c60d3e7b8a 145 * XTEA-CBC buffer encryption/decryption
maclobdell 0:f7c60d3e7b8a 146 */
maclobdell 0:f7c60d3e7b8a 147 int mbedtls_xtea_crypt_cbc( mbedtls_xtea_context *ctx, int mode, size_t length,
maclobdell 0:f7c60d3e7b8a 148 unsigned char iv[8], const unsigned char *input,
maclobdell 0:f7c60d3e7b8a 149 unsigned char *output)
maclobdell 0:f7c60d3e7b8a 150 {
maclobdell 0:f7c60d3e7b8a 151 int i;
maclobdell 0:f7c60d3e7b8a 152 unsigned char temp[8];
maclobdell 0:f7c60d3e7b8a 153
maclobdell 0:f7c60d3e7b8a 154 if( length % 8 )
maclobdell 0:f7c60d3e7b8a 155 return( MBEDTLS_ERR_XTEA_INVALID_INPUT_LENGTH );
maclobdell 0:f7c60d3e7b8a 156
maclobdell 0:f7c60d3e7b8a 157 if( mode == MBEDTLS_XTEA_DECRYPT )
maclobdell 0:f7c60d3e7b8a 158 {
maclobdell 0:f7c60d3e7b8a 159 while( length > 0 )
maclobdell 0:f7c60d3e7b8a 160 {
maclobdell 0:f7c60d3e7b8a 161 memcpy( temp, input, 8 );
maclobdell 0:f7c60d3e7b8a 162 mbedtls_xtea_crypt_ecb( ctx, mode, input, output );
maclobdell 0:f7c60d3e7b8a 163
maclobdell 0:f7c60d3e7b8a 164 for( i = 0; i < 8; i++ )
maclobdell 0:f7c60d3e7b8a 165 output[i] = (unsigned char)( output[i] ^ iv[i] );
maclobdell 0:f7c60d3e7b8a 166
maclobdell 0:f7c60d3e7b8a 167 memcpy( iv, temp, 8 );
maclobdell 0:f7c60d3e7b8a 168
maclobdell 0:f7c60d3e7b8a 169 input += 8;
maclobdell 0:f7c60d3e7b8a 170 output += 8;
maclobdell 0:f7c60d3e7b8a 171 length -= 8;
maclobdell 0:f7c60d3e7b8a 172 }
maclobdell 0:f7c60d3e7b8a 173 }
maclobdell 0:f7c60d3e7b8a 174 else
maclobdell 0:f7c60d3e7b8a 175 {
maclobdell 0:f7c60d3e7b8a 176 while( length > 0 )
maclobdell 0:f7c60d3e7b8a 177 {
maclobdell 0:f7c60d3e7b8a 178 for( i = 0; i < 8; i++ )
maclobdell 0:f7c60d3e7b8a 179 output[i] = (unsigned char)( input[i] ^ iv[i] );
maclobdell 0:f7c60d3e7b8a 180
maclobdell 0:f7c60d3e7b8a 181 mbedtls_xtea_crypt_ecb( ctx, mode, output, output );
maclobdell 0:f7c60d3e7b8a 182 memcpy( iv, output, 8 );
maclobdell 0:f7c60d3e7b8a 183
maclobdell 0:f7c60d3e7b8a 184 input += 8;
maclobdell 0:f7c60d3e7b8a 185 output += 8;
maclobdell 0:f7c60d3e7b8a 186 length -= 8;
maclobdell 0:f7c60d3e7b8a 187 }
maclobdell 0:f7c60d3e7b8a 188 }
maclobdell 0:f7c60d3e7b8a 189
maclobdell 0:f7c60d3e7b8a 190 return( 0 );
maclobdell 0:f7c60d3e7b8a 191 }
maclobdell 0:f7c60d3e7b8a 192 #endif /* MBEDTLS_CIPHER_MODE_CBC */
maclobdell 0:f7c60d3e7b8a 193 #endif /* !MBEDTLS_XTEA_ALT */
maclobdell 0:f7c60d3e7b8a 194
maclobdell 0:f7c60d3e7b8a 195 #if defined(MBEDTLS_SELF_TEST)
maclobdell 0:f7c60d3e7b8a 196
maclobdell 0:f7c60d3e7b8a 197 /*
maclobdell 0:f7c60d3e7b8a 198 * XTEA tests vectors (non-official)
maclobdell 0:f7c60d3e7b8a 199 */
maclobdell 0:f7c60d3e7b8a 200
maclobdell 0:f7c60d3e7b8a 201 static const unsigned char xtea_test_key[6][16] =
maclobdell 0:f7c60d3e7b8a 202 {
maclobdell 0:f7c60d3e7b8a 203 { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b,
maclobdell 0:f7c60d3e7b8a 204 0x0c, 0x0d, 0x0e, 0x0f },
maclobdell 0:f7c60d3e7b8a 205 { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b,
maclobdell 0:f7c60d3e7b8a 206 0x0c, 0x0d, 0x0e, 0x0f },
maclobdell 0:f7c60d3e7b8a 207 { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b,
maclobdell 0:f7c60d3e7b8a 208 0x0c, 0x0d, 0x0e, 0x0f },
maclobdell 0:f7c60d3e7b8a 209 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
maclobdell 0:f7c60d3e7b8a 210 0x00, 0x00, 0x00, 0x00 },
maclobdell 0:f7c60d3e7b8a 211 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
maclobdell 0:f7c60d3e7b8a 212 0x00, 0x00, 0x00, 0x00 },
maclobdell 0:f7c60d3e7b8a 213 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
maclobdell 0:f7c60d3e7b8a 214 0x00, 0x00, 0x00, 0x00 }
maclobdell 0:f7c60d3e7b8a 215 };
maclobdell 0:f7c60d3e7b8a 216
maclobdell 0:f7c60d3e7b8a 217 static const unsigned char xtea_test_pt[6][8] =
maclobdell 0:f7c60d3e7b8a 218 {
maclobdell 0:f7c60d3e7b8a 219 { 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48 },
maclobdell 0:f7c60d3e7b8a 220 { 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41 },
maclobdell 0:f7c60d3e7b8a 221 { 0x5a, 0x5b, 0x6e, 0x27, 0x89, 0x48, 0xd7, 0x7f },
maclobdell 0:f7c60d3e7b8a 222 { 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48 },
maclobdell 0:f7c60d3e7b8a 223 { 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41 },
maclobdell 0:f7c60d3e7b8a 224 { 0x70, 0xe1, 0x22, 0x5d, 0x6e, 0x4e, 0x76, 0x55 }
maclobdell 0:f7c60d3e7b8a 225 };
maclobdell 0:f7c60d3e7b8a 226
maclobdell 0:f7c60d3e7b8a 227 static const unsigned char xtea_test_ct[6][8] =
maclobdell 0:f7c60d3e7b8a 228 {
maclobdell 0:f7c60d3e7b8a 229 { 0x49, 0x7d, 0xf3, 0xd0, 0x72, 0x61, 0x2c, 0xb5 },
maclobdell 0:f7c60d3e7b8a 230 { 0xe7, 0x8f, 0x2d, 0x13, 0x74, 0x43, 0x41, 0xd8 },
maclobdell 0:f7c60d3e7b8a 231 { 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41 },
maclobdell 0:f7c60d3e7b8a 232 { 0xa0, 0x39, 0x05, 0x89, 0xf8, 0xb8, 0xef, 0xa5 },
maclobdell 0:f7c60d3e7b8a 233 { 0xed, 0x23, 0x37, 0x5a, 0x82, 0x1a, 0x8c, 0x2d },
maclobdell 0:f7c60d3e7b8a 234 { 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41 }
maclobdell 0:f7c60d3e7b8a 235 };
maclobdell 0:f7c60d3e7b8a 236
maclobdell 0:f7c60d3e7b8a 237 /*
maclobdell 0:f7c60d3e7b8a 238 * Checkup routine
maclobdell 0:f7c60d3e7b8a 239 */
maclobdell 0:f7c60d3e7b8a 240 int mbedtls_xtea_self_test( int verbose )
maclobdell 0:f7c60d3e7b8a 241 {
maclobdell 0:f7c60d3e7b8a 242 int i, ret = 0;
maclobdell 0:f7c60d3e7b8a 243 unsigned char buf[8];
maclobdell 0:f7c60d3e7b8a 244 mbedtls_xtea_context ctx;
maclobdell 0:f7c60d3e7b8a 245
maclobdell 0:f7c60d3e7b8a 246 mbedtls_xtea_init( &ctx );
maclobdell 0:f7c60d3e7b8a 247 for( i = 0; i < 6; i++ )
maclobdell 0:f7c60d3e7b8a 248 {
maclobdell 0:f7c60d3e7b8a 249 if( verbose != 0 )
maclobdell 0:f7c60d3e7b8a 250 mbedtls_printf( " XTEA test #%d: ", i + 1 );
maclobdell 0:f7c60d3e7b8a 251
maclobdell 0:f7c60d3e7b8a 252 memcpy( buf, xtea_test_pt[i], 8 );
maclobdell 0:f7c60d3e7b8a 253
maclobdell 0:f7c60d3e7b8a 254 mbedtls_xtea_setup( &ctx, xtea_test_key[i] );
maclobdell 0:f7c60d3e7b8a 255 mbedtls_xtea_crypt_ecb( &ctx, MBEDTLS_XTEA_ENCRYPT, buf, buf );
maclobdell 0:f7c60d3e7b8a 256
maclobdell 0:f7c60d3e7b8a 257 if( memcmp( buf, xtea_test_ct[i], 8 ) != 0 )
maclobdell 0:f7c60d3e7b8a 258 {
maclobdell 0:f7c60d3e7b8a 259 if( verbose != 0 )
maclobdell 0:f7c60d3e7b8a 260 mbedtls_printf( "failed\n" );
maclobdell 0:f7c60d3e7b8a 261
maclobdell 0:f7c60d3e7b8a 262 ret = 1;
maclobdell 0:f7c60d3e7b8a 263 goto exit;
maclobdell 0:f7c60d3e7b8a 264 }
maclobdell 0:f7c60d3e7b8a 265
maclobdell 0:f7c60d3e7b8a 266 if( verbose != 0 )
maclobdell 0:f7c60d3e7b8a 267 mbedtls_printf( "passed\n" );
maclobdell 0:f7c60d3e7b8a 268 }
maclobdell 0:f7c60d3e7b8a 269
maclobdell 0:f7c60d3e7b8a 270 if( verbose != 0 )
maclobdell 0:f7c60d3e7b8a 271 mbedtls_printf( "\n" );
maclobdell 0:f7c60d3e7b8a 272
maclobdell 0:f7c60d3e7b8a 273 exit:
maclobdell 0:f7c60d3e7b8a 274 mbedtls_xtea_free( &ctx );
maclobdell 0:f7c60d3e7b8a 275
maclobdell 0:f7c60d3e7b8a 276 return( ret );
maclobdell 0:f7c60d3e7b8a 277 }
maclobdell 0:f7c60d3e7b8a 278
maclobdell 0:f7c60d3e7b8a 279 #endif /* MBEDTLS_SELF_TEST */
maclobdell 0:f7c60d3e7b8a 280
maclobdell 0:f7c60d3e7b8a 281 #endif /* MBEDTLS_XTEA_C */