Simon Cooksey / mbed-os

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features/mbedtls/src/xtea.c@0:fb7af294d5d9, 2016-11-17 (annotated)

Committer:
Simon Cooksey
Date:
Thu Nov 17 16:43:53 2016 +0000
Revision:
0:fb7af294d5d9
Initial commit

Who changed what in which revision?

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Simon Cooksey 0:fb7af294d5d9 1 /*
Simon Cooksey 0:fb7af294d5d9 2 * An 32-bit implementation of the XTEA algorithm
Simon Cooksey 0:fb7af294d5d9 3 *
Simon Cooksey 0:fb7af294d5d9 4 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
Simon Cooksey 0:fb7af294d5d9 5 * SPDX-License-Identifier: Apache-2.0
Simon Cooksey 0:fb7af294d5d9 6 *
Simon Cooksey 0:fb7af294d5d9 7 * Licensed under the Apache License, Version 2.0 (the "License"); you may
Simon Cooksey 0:fb7af294d5d9 8 * not use this file except in compliance with the License.
Simon Cooksey 0:fb7af294d5d9 9 * You may obtain a copy of the License at
Simon Cooksey 0:fb7af294d5d9 10 *
Simon Cooksey 0:fb7af294d5d9 11 * http://www.apache.org/licenses/LICENSE-2.0
Simon Cooksey 0:fb7af294d5d9 12 *
Simon Cooksey 0:fb7af294d5d9 13 * Unless required by applicable law or agreed to in writing, software
Simon Cooksey 0:fb7af294d5d9 14 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
Simon Cooksey 0:fb7af294d5d9 15 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
Simon Cooksey 0:fb7af294d5d9 16 * See the License for the specific language governing permissions and
Simon Cooksey 0:fb7af294d5d9 17 * limitations under the License.
Simon Cooksey 0:fb7af294d5d9 18 *
Simon Cooksey 0:fb7af294d5d9 19 * This file is part of mbed TLS (https://tls.mbed.org)
Simon Cooksey 0:fb7af294d5d9 20 */
Simon Cooksey 0:fb7af294d5d9 21
Simon Cooksey 0:fb7af294d5d9 22 #if !defined(MBEDTLS_CONFIG_FILE)
Simon Cooksey 0:fb7af294d5d9 23 #include "mbedtls/config.h"
Simon Cooksey 0:fb7af294d5d9 24 #else
Simon Cooksey 0:fb7af294d5d9 25 #include MBEDTLS_CONFIG_FILE
Simon Cooksey 0:fb7af294d5d9 26 #endif
Simon Cooksey 0:fb7af294d5d9 27
Simon Cooksey 0:fb7af294d5d9 28 #if defined(MBEDTLS_XTEA_C)
Simon Cooksey 0:fb7af294d5d9 29
Simon Cooksey 0:fb7af294d5d9 30 #include "mbedtls/xtea.h"
Simon Cooksey 0:fb7af294d5d9 31
Simon Cooksey 0:fb7af294d5d9 32 #include <string.h>
Simon Cooksey 0:fb7af294d5d9 33
Simon Cooksey 0:fb7af294d5d9 34 #if defined(MBEDTLS_SELF_TEST)
Simon Cooksey 0:fb7af294d5d9 35 #if defined(MBEDTLS_PLATFORM_C)
Simon Cooksey 0:fb7af294d5d9 36 #include "mbedtls/platform.h"
Simon Cooksey 0:fb7af294d5d9 37 #else
Simon Cooksey 0:fb7af294d5d9 38 #include <stdio.h>
Simon Cooksey 0:fb7af294d5d9 39 #define mbedtls_printf printf
Simon Cooksey 0:fb7af294d5d9 40 #endif /* MBEDTLS_PLATFORM_C */
Simon Cooksey 0:fb7af294d5d9 41 #endif /* MBEDTLS_SELF_TEST */
Simon Cooksey 0:fb7af294d5d9 42
Simon Cooksey 0:fb7af294d5d9 43 #if !defined(MBEDTLS_XTEA_ALT)
Simon Cooksey 0:fb7af294d5d9 44
Simon Cooksey 0:fb7af294d5d9 45 /* Implementation that should never be optimized out by the compiler */
Simon Cooksey 0:fb7af294d5d9 46 static void mbedtls_zeroize( void *v, size_t n ) {
Simon Cooksey 0:fb7af294d5d9 47 volatile unsigned char *p = v; while( n-- ) *p++ = 0;
Simon Cooksey 0:fb7af294d5d9 48 }
Simon Cooksey 0:fb7af294d5d9 49
Simon Cooksey 0:fb7af294d5d9 50 /*
Simon Cooksey 0:fb7af294d5d9 51 * 32-bit integer manipulation macros (big endian)
Simon Cooksey 0:fb7af294d5d9 52 */
Simon Cooksey 0:fb7af294d5d9 53 #ifndef GET_UINT32_BE
Simon Cooksey 0:fb7af294d5d9 54 #define GET_UINT32_BE(n,b,i) \
Simon Cooksey 0:fb7af294d5d9 55 { \
Simon Cooksey 0:fb7af294d5d9 56 (n) = ( (uint32_t) (b)[(i) ] << 24 ) \
Simon Cooksey 0:fb7af294d5d9 57 | ( (uint32_t) (b)[(i) + 1] << 16 ) \
Simon Cooksey 0:fb7af294d5d9 58 | ( (uint32_t) (b)[(i) + 2] << 8 ) \
Simon Cooksey 0:fb7af294d5d9 59 | ( (uint32_t) (b)[(i) + 3] ); \
Simon Cooksey 0:fb7af294d5d9 60 }
Simon Cooksey 0:fb7af294d5d9 61 #endif
Simon Cooksey 0:fb7af294d5d9 62
Simon Cooksey 0:fb7af294d5d9 63 #ifndef PUT_UINT32_BE
Simon Cooksey 0:fb7af294d5d9 64 #define PUT_UINT32_BE(n,b,i) \
Simon Cooksey 0:fb7af294d5d9 65 { \
Simon Cooksey 0:fb7af294d5d9 66 (b)[(i) ] = (unsigned char) ( (n) >> 24 ); \
Simon Cooksey 0:fb7af294d5d9 67 (b)[(i) + 1] = (unsigned char) ( (n) >> 16 ); \
Simon Cooksey 0:fb7af294d5d9 68 (b)[(i) + 2] = (unsigned char) ( (n) >> 8 ); \
Simon Cooksey 0:fb7af294d5d9 69 (b)[(i) + 3] = (unsigned char) ( (n) ); \
Simon Cooksey 0:fb7af294d5d9 70 }
Simon Cooksey 0:fb7af294d5d9 71 #endif
Simon Cooksey 0:fb7af294d5d9 72
Simon Cooksey 0:fb7af294d5d9 73 void mbedtls_xtea_init( mbedtls_xtea_context *ctx )
Simon Cooksey 0:fb7af294d5d9 74 {
Simon Cooksey 0:fb7af294d5d9 75 memset( ctx, 0, sizeof( mbedtls_xtea_context ) );
Simon Cooksey 0:fb7af294d5d9 76 }
Simon Cooksey 0:fb7af294d5d9 77
Simon Cooksey 0:fb7af294d5d9 78 void mbedtls_xtea_free( mbedtls_xtea_context *ctx )
Simon Cooksey 0:fb7af294d5d9 79 {
Simon Cooksey 0:fb7af294d5d9 80 if( ctx == NULL )
Simon Cooksey 0:fb7af294d5d9 81 return;
Simon Cooksey 0:fb7af294d5d9 82
Simon Cooksey 0:fb7af294d5d9 83 mbedtls_zeroize( ctx, sizeof( mbedtls_xtea_context ) );
Simon Cooksey 0:fb7af294d5d9 84 }
Simon Cooksey 0:fb7af294d5d9 85
Simon Cooksey 0:fb7af294d5d9 86 /*
Simon Cooksey 0:fb7af294d5d9 87 * XTEA key schedule
Simon Cooksey 0:fb7af294d5d9 88 */
Simon Cooksey 0:fb7af294d5d9 89 void mbedtls_xtea_setup( mbedtls_xtea_context *ctx, const unsigned char key[16] )
Simon Cooksey 0:fb7af294d5d9 90 {
Simon Cooksey 0:fb7af294d5d9 91 int i;
Simon Cooksey 0:fb7af294d5d9 92
Simon Cooksey 0:fb7af294d5d9 93 memset( ctx, 0, sizeof(mbedtls_xtea_context) );
Simon Cooksey 0:fb7af294d5d9 94
Simon Cooksey 0:fb7af294d5d9 95 for( i = 0; i < 4; i++ )
Simon Cooksey 0:fb7af294d5d9 96 {
Simon Cooksey 0:fb7af294d5d9 97 GET_UINT32_BE( ctx->k[i], key, i << 2 );
Simon Cooksey 0:fb7af294d5d9 98 }
Simon Cooksey 0:fb7af294d5d9 99 }
Simon Cooksey 0:fb7af294d5d9 100
Simon Cooksey 0:fb7af294d5d9 101 /*
Simon Cooksey 0:fb7af294d5d9 102 * XTEA encrypt function
Simon Cooksey 0:fb7af294d5d9 103 */
Simon Cooksey 0:fb7af294d5d9 104 int mbedtls_xtea_crypt_ecb( mbedtls_xtea_context *ctx, int mode,
Simon Cooksey 0:fb7af294d5d9 105 const unsigned char input[8], unsigned char output[8])
Simon Cooksey 0:fb7af294d5d9 106 {
Simon Cooksey 0:fb7af294d5d9 107 uint32_t *k, v0, v1, i;
Simon Cooksey 0:fb7af294d5d9 108
Simon Cooksey 0:fb7af294d5d9 109 k = ctx->k;
Simon Cooksey 0:fb7af294d5d9 110
Simon Cooksey 0:fb7af294d5d9 111 GET_UINT32_BE( v0, input, 0 );
Simon Cooksey 0:fb7af294d5d9 112 GET_UINT32_BE( v1, input, 4 );
Simon Cooksey 0:fb7af294d5d9 113
Simon Cooksey 0:fb7af294d5d9 114 if( mode == MBEDTLS_XTEA_ENCRYPT )
Simon Cooksey 0:fb7af294d5d9 115 {
Simon Cooksey 0:fb7af294d5d9 116 uint32_t sum = 0, delta = 0x9E3779B9;
Simon Cooksey 0:fb7af294d5d9 117
Simon Cooksey 0:fb7af294d5d9 118 for( i = 0; i < 32; i++ )
Simon Cooksey 0:fb7af294d5d9 119 {
Simon Cooksey 0:fb7af294d5d9 120 v0 += (((v1 << 4) ^ (v1 >> 5)) + v1) ^ (sum + k[sum & 3]);
Simon Cooksey 0:fb7af294d5d9 121 sum += delta;
Simon Cooksey 0:fb7af294d5d9 122 v1 += (((v0 << 4) ^ (v0 >> 5)) + v0) ^ (sum + k[(sum>>11) & 3]);
Simon Cooksey 0:fb7af294d5d9 123 }
Simon Cooksey 0:fb7af294d5d9 124 }
Simon Cooksey 0:fb7af294d5d9 125 else /* MBEDTLS_XTEA_DECRYPT */
Simon Cooksey 0:fb7af294d5d9 126 {
Simon Cooksey 0:fb7af294d5d9 127 uint32_t delta = 0x9E3779B9, sum = delta * 32;
Simon Cooksey 0:fb7af294d5d9 128
Simon Cooksey 0:fb7af294d5d9 129 for( i = 0; i < 32; i++ )
Simon Cooksey 0:fb7af294d5d9 130 {
Simon Cooksey 0:fb7af294d5d9 131 v1 -= (((v0 << 4) ^ (v0 >> 5)) + v0) ^ (sum + k[(sum>>11) & 3]);
Simon Cooksey 0:fb7af294d5d9 132 sum -= delta;
Simon Cooksey 0:fb7af294d5d9 133 v0 -= (((v1 << 4) ^ (v1 >> 5)) + v1) ^ (sum + k[sum & 3]);
Simon Cooksey 0:fb7af294d5d9 134 }
Simon Cooksey 0:fb7af294d5d9 135 }
Simon Cooksey 0:fb7af294d5d9 136
Simon Cooksey 0:fb7af294d5d9 137 PUT_UINT32_BE( v0, output, 0 );
Simon Cooksey 0:fb7af294d5d9 138 PUT_UINT32_BE( v1, output, 4 );
Simon Cooksey 0:fb7af294d5d9 139
Simon Cooksey 0:fb7af294d5d9 140 return( 0 );
Simon Cooksey 0:fb7af294d5d9 141 }
Simon Cooksey 0:fb7af294d5d9 142
Simon Cooksey 0:fb7af294d5d9 143 #if defined(MBEDTLS_CIPHER_MODE_CBC)
Simon Cooksey 0:fb7af294d5d9 144 /*
Simon Cooksey 0:fb7af294d5d9 145 * XTEA-CBC buffer encryption/decryption
Simon Cooksey 0:fb7af294d5d9 146 */
Simon Cooksey 0:fb7af294d5d9 147 int mbedtls_xtea_crypt_cbc( mbedtls_xtea_context *ctx, int mode, size_t length,
Simon Cooksey 0:fb7af294d5d9 148 unsigned char iv[8], const unsigned char *input,
Simon Cooksey 0:fb7af294d5d9 149 unsigned char *output)
Simon Cooksey 0:fb7af294d5d9 150 {
Simon Cooksey 0:fb7af294d5d9 151 int i;
Simon Cooksey 0:fb7af294d5d9 152 unsigned char temp[8];
Simon Cooksey 0:fb7af294d5d9 153
Simon Cooksey 0:fb7af294d5d9 154 if( length % 8 )
Simon Cooksey 0:fb7af294d5d9 155 return( MBEDTLS_ERR_XTEA_INVALID_INPUT_LENGTH );
Simon Cooksey 0:fb7af294d5d9 156
Simon Cooksey 0:fb7af294d5d9 157 if( mode == MBEDTLS_XTEA_DECRYPT )
Simon Cooksey 0:fb7af294d5d9 158 {
Simon Cooksey 0:fb7af294d5d9 159 while( length > 0 )
Simon Cooksey 0:fb7af294d5d9 160 {
Simon Cooksey 0:fb7af294d5d9 161 memcpy( temp, input, 8 );
Simon Cooksey 0:fb7af294d5d9 162 mbedtls_xtea_crypt_ecb( ctx, mode, input, output );
Simon Cooksey 0:fb7af294d5d9 163
Simon Cooksey 0:fb7af294d5d9 164 for( i = 0; i < 8; i++ )
Simon Cooksey 0:fb7af294d5d9 165 output[i] = (unsigned char)( output[i] ^ iv[i] );
Simon Cooksey 0:fb7af294d5d9 166
Simon Cooksey 0:fb7af294d5d9 167 memcpy( iv, temp, 8 );
Simon Cooksey 0:fb7af294d5d9 168
Simon Cooksey 0:fb7af294d5d9 169 input += 8;
Simon Cooksey 0:fb7af294d5d9 170 output += 8;
Simon Cooksey 0:fb7af294d5d9 171 length -= 8;
Simon Cooksey 0:fb7af294d5d9 172 }
Simon Cooksey 0:fb7af294d5d9 173 }
Simon Cooksey 0:fb7af294d5d9 174 else
Simon Cooksey 0:fb7af294d5d9 175 {
Simon Cooksey 0:fb7af294d5d9 176 while( length > 0 )
Simon Cooksey 0:fb7af294d5d9 177 {
Simon Cooksey 0:fb7af294d5d9 178 for( i = 0; i < 8; i++ )
Simon Cooksey 0:fb7af294d5d9 179 output[i] = (unsigned char)( input[i] ^ iv[i] );
Simon Cooksey 0:fb7af294d5d9 180
Simon Cooksey 0:fb7af294d5d9 181 mbedtls_xtea_crypt_ecb( ctx, mode, output, output );
Simon Cooksey 0:fb7af294d5d9 182 memcpy( iv, output, 8 );
Simon Cooksey 0:fb7af294d5d9 183
Simon Cooksey 0:fb7af294d5d9 184 input += 8;
Simon Cooksey 0:fb7af294d5d9 185 output += 8;
Simon Cooksey 0:fb7af294d5d9 186 length -= 8;
Simon Cooksey 0:fb7af294d5d9 187 }
Simon Cooksey 0:fb7af294d5d9 188 }
Simon Cooksey 0:fb7af294d5d9 189
Simon Cooksey 0:fb7af294d5d9 190 return( 0 );
Simon Cooksey 0:fb7af294d5d9 191 }
Simon Cooksey 0:fb7af294d5d9 192 #endif /* MBEDTLS_CIPHER_MODE_CBC */
Simon Cooksey 0:fb7af294d5d9 193 #endif /* !MBEDTLS_XTEA_ALT */
Simon Cooksey 0:fb7af294d5d9 194
Simon Cooksey 0:fb7af294d5d9 195 #if defined(MBEDTLS_SELF_TEST)
Simon Cooksey 0:fb7af294d5d9 196
Simon Cooksey 0:fb7af294d5d9 197 /*
Simon Cooksey 0:fb7af294d5d9 198 * XTEA tests vectors (non-official)
Simon Cooksey 0:fb7af294d5d9 199 */
Simon Cooksey 0:fb7af294d5d9 200
Simon Cooksey 0:fb7af294d5d9 201 static const unsigned char xtea_test_key[6][16] =
Simon Cooksey 0:fb7af294d5d9 202 {
Simon Cooksey 0:fb7af294d5d9 203 { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b,
Simon Cooksey 0:fb7af294d5d9 204 0x0c, 0x0d, 0x0e, 0x0f },
Simon Cooksey 0:fb7af294d5d9 205 { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b,
Simon Cooksey 0:fb7af294d5d9 206 0x0c, 0x0d, 0x0e, 0x0f },
Simon Cooksey 0:fb7af294d5d9 207 { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b,
Simon Cooksey 0:fb7af294d5d9 208 0x0c, 0x0d, 0x0e, 0x0f },
Simon Cooksey 0:fb7af294d5d9 209 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
Simon Cooksey 0:fb7af294d5d9 210 0x00, 0x00, 0x00, 0x00 },
Simon Cooksey 0:fb7af294d5d9 211 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
Simon Cooksey 0:fb7af294d5d9 212 0x00, 0x00, 0x00, 0x00 },
Simon Cooksey 0:fb7af294d5d9 213 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
Simon Cooksey 0:fb7af294d5d9 214 0x00, 0x00, 0x00, 0x00 }
Simon Cooksey 0:fb7af294d5d9 215 };
Simon Cooksey 0:fb7af294d5d9 216
Simon Cooksey 0:fb7af294d5d9 217 static const unsigned char xtea_test_pt[6][8] =
Simon Cooksey 0:fb7af294d5d9 218 {
Simon Cooksey 0:fb7af294d5d9 219 { 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48 },
Simon Cooksey 0:fb7af294d5d9 220 { 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41 },
Simon Cooksey 0:fb7af294d5d9 221 { 0x5a, 0x5b, 0x6e, 0x27, 0x89, 0x48, 0xd7, 0x7f },
Simon Cooksey 0:fb7af294d5d9 222 { 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48 },
Simon Cooksey 0:fb7af294d5d9 223 { 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41 },
Simon Cooksey 0:fb7af294d5d9 224 { 0x70, 0xe1, 0x22, 0x5d, 0x6e, 0x4e, 0x76, 0x55 }
Simon Cooksey 0:fb7af294d5d9 225 };
Simon Cooksey 0:fb7af294d5d9 226
Simon Cooksey 0:fb7af294d5d9 227 static const unsigned char xtea_test_ct[6][8] =
Simon Cooksey 0:fb7af294d5d9 228 {
Simon Cooksey 0:fb7af294d5d9 229 { 0x49, 0x7d, 0xf3, 0xd0, 0x72, 0x61, 0x2c, 0xb5 },
Simon Cooksey 0:fb7af294d5d9 230 { 0xe7, 0x8f, 0x2d, 0x13, 0x74, 0x43, 0x41, 0xd8 },
Simon Cooksey 0:fb7af294d5d9 231 { 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41 },
Simon Cooksey 0:fb7af294d5d9 232 { 0xa0, 0x39, 0x05, 0x89, 0xf8, 0xb8, 0xef, 0xa5 },
Simon Cooksey 0:fb7af294d5d9 233 { 0xed, 0x23, 0x37, 0x5a, 0x82, 0x1a, 0x8c, 0x2d },
Simon Cooksey 0:fb7af294d5d9 234 { 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41 }
Simon Cooksey 0:fb7af294d5d9 235 };
Simon Cooksey 0:fb7af294d5d9 236
Simon Cooksey 0:fb7af294d5d9 237 /*
Simon Cooksey 0:fb7af294d5d9 238 * Checkup routine
Simon Cooksey 0:fb7af294d5d9 239 */
Simon Cooksey 0:fb7af294d5d9 240 int mbedtls_xtea_self_test( int verbose )
Simon Cooksey 0:fb7af294d5d9 241 {
Simon Cooksey 0:fb7af294d5d9 242 int i, ret = 0;
Simon Cooksey 0:fb7af294d5d9 243 unsigned char buf[8];
Simon Cooksey 0:fb7af294d5d9 244 mbedtls_xtea_context ctx;
Simon Cooksey 0:fb7af294d5d9 245
Simon Cooksey 0:fb7af294d5d9 246 mbedtls_xtea_init( &ctx );
Simon Cooksey 0:fb7af294d5d9 247 for( i = 0; i < 6; i++ )
Simon Cooksey 0:fb7af294d5d9 248 {
Simon Cooksey 0:fb7af294d5d9 249 if( verbose != 0 )
Simon Cooksey 0:fb7af294d5d9 250 mbedtls_printf( " XTEA test #%d: ", i + 1 );
Simon Cooksey 0:fb7af294d5d9 251
Simon Cooksey 0:fb7af294d5d9 252 memcpy( buf, xtea_test_pt[i], 8 );
Simon Cooksey 0:fb7af294d5d9 253
Simon Cooksey 0:fb7af294d5d9 254 mbedtls_xtea_setup( &ctx, xtea_test_key[i] );
Simon Cooksey 0:fb7af294d5d9 255 mbedtls_xtea_crypt_ecb( &ctx, MBEDTLS_XTEA_ENCRYPT, buf, buf );
Simon Cooksey 0:fb7af294d5d9 256
Simon Cooksey 0:fb7af294d5d9 257 if( memcmp( buf, xtea_test_ct[i], 8 ) != 0 )
Simon Cooksey 0:fb7af294d5d9 258 {
Simon Cooksey 0:fb7af294d5d9 259 if( verbose != 0 )
Simon Cooksey 0:fb7af294d5d9 260 mbedtls_printf( "failed\n" );
Simon Cooksey 0:fb7af294d5d9 261
Simon Cooksey 0:fb7af294d5d9 262 ret = 1;
Simon Cooksey 0:fb7af294d5d9 263 goto exit;
Simon Cooksey 0:fb7af294d5d9 264 }
Simon Cooksey 0:fb7af294d5d9 265
Simon Cooksey 0:fb7af294d5d9 266 if( verbose != 0 )
Simon Cooksey 0:fb7af294d5d9 267 mbedtls_printf( "passed\n" );
Simon Cooksey 0:fb7af294d5d9 268 }
Simon Cooksey 0:fb7af294d5d9 269
Simon Cooksey 0:fb7af294d5d9 270 if( verbose != 0 )
Simon Cooksey 0:fb7af294d5d9 271 mbedtls_printf( "\n" );
Simon Cooksey 0:fb7af294d5d9 272
Simon Cooksey 0:fb7af294d5d9 273 exit:
Simon Cooksey 0:fb7af294d5d9 274 mbedtls_xtea_free( &ctx );
Simon Cooksey 0:fb7af294d5d9 275
Simon Cooksey 0:fb7af294d5d9 276 return( ret );
Simon Cooksey 0:fb7af294d5d9 277 }
Simon Cooksey 0:fb7af294d5d9 278
Simon Cooksey 0:fb7af294d5d9 279 #endif /* MBEDTLS_SELF_TEST */
Simon Cooksey 0:fb7af294d5d9 280
Simon Cooksey 0:fb7af294d5d9 281 #endif /* MBEDTLS_XTEA_C */