Avnet / WNCInterface

The WDCInterface is is a drop-in replacement for an EthernetInterface class that allows the user to connect to the Internet with a Wistron NeWeb Corporation (WNC) M14A2A Series data module using the standard network Socket API's. This interface class is used in the AT&T Cellular IoT Starter Kit which is sold by Avnet (http://cloudconnectkits.org/product/att-cellular-iot-starter-kit).

Dependencies:   WncControllerK64F

Dependents:   WNCProximityMqtt Pubnub_ATT_IoT_SK_WNC_sync BluemixDemo BluemixQS ... more

See the WNCInterface README in the Wiki tab for detailed information on this library.

mbedtls/source/xtea.c@12:0071cb144c7a, 2016-11-01 (annotated)

Committer:
JMF
Date:
Tue Nov 01 14:22:56 2016 +0000
Revision:
12:0071cb144c7a
Adding mbedtls files

Who changed what in which revision?

UserRevisionLine numberNew contents of line
JMF 12:0071cb144c7a 1 /*
JMF 12:0071cb144c7a 2 * An 32-bit implementation of the XTEA algorithm
JMF 12:0071cb144c7a 3 *
JMF 12:0071cb144c7a 4 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
JMF 12:0071cb144c7a 5 * SPDX-License-Identifier: Apache-2.0
JMF 12:0071cb144c7a 6 *
JMF 12:0071cb144c7a 7 * Licensed under the Apache License, Version 2.0 (the "License"); you may
JMF 12:0071cb144c7a 8 * not use this file except in compliance with the License.
JMF 12:0071cb144c7a 9 * You may obtain a copy of the License at
JMF 12:0071cb144c7a 10 *
JMF 12:0071cb144c7a 11 * http://www.apache.org/licenses/LICENSE-2.0
JMF 12:0071cb144c7a 12 *
JMF 12:0071cb144c7a 13 * Unless required by applicable law or agreed to in writing, software
JMF 12:0071cb144c7a 14 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
JMF 12:0071cb144c7a 15 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
JMF 12:0071cb144c7a 16 * See the License for the specific language governing permissions and
JMF 12:0071cb144c7a 17 * limitations under the License.
JMF 12:0071cb144c7a 18 *
JMF 12:0071cb144c7a 19 * This file is part of mbed TLS (https://tls.mbed.org)
JMF 12:0071cb144c7a 20 */
JMF 12:0071cb144c7a 21
JMF 12:0071cb144c7a 22 #if !defined(MBEDTLS_CONFIG_FILE)
JMF 12:0071cb144c7a 23 #include "mbedtls/config.h"
JMF 12:0071cb144c7a 24 #else
JMF 12:0071cb144c7a 25 #include MBEDTLS_CONFIG_FILE
JMF 12:0071cb144c7a 26 #endif
JMF 12:0071cb144c7a 27
JMF 12:0071cb144c7a 28 #if defined(MBEDTLS_XTEA_C)
JMF 12:0071cb144c7a 29
JMF 12:0071cb144c7a 30 #include "mbedtls/xtea.h"
JMF 12:0071cb144c7a 31
JMF 12:0071cb144c7a 32 #include <string.h>
JMF 12:0071cb144c7a 33
JMF 12:0071cb144c7a 34 #if defined(MBEDTLS_SELF_TEST)
JMF 12:0071cb144c7a 35 #if defined(MBEDTLS_PLATFORM_C)
JMF 12:0071cb144c7a 36 #include "mbedtls/platform.h"
JMF 12:0071cb144c7a 37 #else
JMF 12:0071cb144c7a 38 #include <stdio.h>
JMF 12:0071cb144c7a 39 #define mbedtls_printf printf
JMF 12:0071cb144c7a 40 #endif /* MBEDTLS_PLATFORM_C */
JMF 12:0071cb144c7a 41 #endif /* MBEDTLS_SELF_TEST */
JMF 12:0071cb144c7a 42
JMF 12:0071cb144c7a 43 #if !defined(MBEDTLS_XTEA_ALT)
JMF 12:0071cb144c7a 44
JMF 12:0071cb144c7a 45 /* Implementation that should never be optimized out by the compiler */
JMF 12:0071cb144c7a 46 static void mbedtls_zeroize( void *v, size_t n ) {
JMF 12:0071cb144c7a 47 volatile unsigned char *p = v; while( n-- ) *p++ = 0;
JMF 12:0071cb144c7a 48 }
JMF 12:0071cb144c7a 49
JMF 12:0071cb144c7a 50 /*
JMF 12:0071cb144c7a 51 * 32-bit integer manipulation macros (big endian)
JMF 12:0071cb144c7a 52 */
JMF 12:0071cb144c7a 53 #ifndef GET_UINT32_BE
JMF 12:0071cb144c7a 54 #define GET_UINT32_BE(n,b,i) \
JMF 12:0071cb144c7a 55 { \
JMF 12:0071cb144c7a 56 (n) = ( (uint32_t) (b)[(i) ] << 24 ) \
JMF 12:0071cb144c7a 57 | ( (uint32_t) (b)[(i) + 1] << 16 ) \
JMF 12:0071cb144c7a 58 | ( (uint32_t) (b)[(i) + 2] << 8 ) \
JMF 12:0071cb144c7a 59 | ( (uint32_t) (b)[(i) + 3] ); \
JMF 12:0071cb144c7a 60 }
JMF 12:0071cb144c7a 61 #endif
JMF 12:0071cb144c7a 62
JMF 12:0071cb144c7a 63 #ifndef PUT_UINT32_BE
JMF 12:0071cb144c7a 64 #define PUT_UINT32_BE(n,b,i) \
JMF 12:0071cb144c7a 65 { \
JMF 12:0071cb144c7a 66 (b)[(i) ] = (unsigned char) ( (n) >> 24 ); \
JMF 12:0071cb144c7a 67 (b)[(i) + 1] = (unsigned char) ( (n) >> 16 ); \
JMF 12:0071cb144c7a 68 (b)[(i) + 2] = (unsigned char) ( (n) >> 8 ); \
JMF 12:0071cb144c7a 69 (b)[(i) + 3] = (unsigned char) ( (n) ); \
JMF 12:0071cb144c7a 70 }
JMF 12:0071cb144c7a 71 #endif
JMF 12:0071cb144c7a 72
JMF 12:0071cb144c7a 73 void mbedtls_xtea_init( mbedtls_xtea_context *ctx )
JMF 12:0071cb144c7a 74 {
JMF 12:0071cb144c7a 75 memset( ctx, 0, sizeof( mbedtls_xtea_context ) );
JMF 12:0071cb144c7a 76 }
JMF 12:0071cb144c7a 77
JMF 12:0071cb144c7a 78 void mbedtls_xtea_free( mbedtls_xtea_context *ctx )
JMF 12:0071cb144c7a 79 {
JMF 12:0071cb144c7a 80 if( ctx == NULL )
JMF 12:0071cb144c7a 81 return;
JMF 12:0071cb144c7a 82
JMF 12:0071cb144c7a 83 mbedtls_zeroize( ctx, sizeof( mbedtls_xtea_context ) );
JMF 12:0071cb144c7a 84 }
JMF 12:0071cb144c7a 85
JMF 12:0071cb144c7a 86 /*
JMF 12:0071cb144c7a 87 * XTEA key schedule
JMF 12:0071cb144c7a 88 */
JMF 12:0071cb144c7a 89 void mbedtls_xtea_setup( mbedtls_xtea_context *ctx, const unsigned char key[16] )
JMF 12:0071cb144c7a 90 {
JMF 12:0071cb144c7a 91 int i;
JMF 12:0071cb144c7a 92
JMF 12:0071cb144c7a 93 memset( ctx, 0, sizeof(mbedtls_xtea_context) );
JMF 12:0071cb144c7a 94
JMF 12:0071cb144c7a 95 for( i = 0; i < 4; i++ )
JMF 12:0071cb144c7a 96 {
JMF 12:0071cb144c7a 97 GET_UINT32_BE( ctx->k[i], key, i << 2 );
JMF 12:0071cb144c7a 98 }
JMF 12:0071cb144c7a 99 }
JMF 12:0071cb144c7a 100
JMF 12:0071cb144c7a 101 /*
JMF 12:0071cb144c7a 102 * XTEA encrypt function
JMF 12:0071cb144c7a 103 */
JMF 12:0071cb144c7a 104 int mbedtls_xtea_crypt_ecb( mbedtls_xtea_context *ctx, int mode,
JMF 12:0071cb144c7a 105 const unsigned char input[8], unsigned char output[8])
JMF 12:0071cb144c7a 106 {
JMF 12:0071cb144c7a 107 uint32_t *k, v0, v1, i;
JMF 12:0071cb144c7a 108
JMF 12:0071cb144c7a 109 k = ctx->k;
JMF 12:0071cb144c7a 110
JMF 12:0071cb144c7a 111 GET_UINT32_BE( v0, input, 0 );
JMF 12:0071cb144c7a 112 GET_UINT32_BE( v1, input, 4 );
JMF 12:0071cb144c7a 113
JMF 12:0071cb144c7a 114 if( mode == MBEDTLS_XTEA_ENCRYPT )
JMF 12:0071cb144c7a 115 {
JMF 12:0071cb144c7a 116 uint32_t sum = 0, delta = 0x9E3779B9;
JMF 12:0071cb144c7a 117
JMF 12:0071cb144c7a 118 for( i = 0; i < 32; i++ )
JMF 12:0071cb144c7a 119 {
JMF 12:0071cb144c7a 120 v0 += (((v1 << 4) ^ (v1 >> 5)) + v1) ^ (sum + k[sum & 3]);
JMF 12:0071cb144c7a 121 sum += delta;
JMF 12:0071cb144c7a 122 v1 += (((v0 << 4) ^ (v0 >> 5)) + v0) ^ (sum + k[(sum>>11) & 3]);
JMF 12:0071cb144c7a 123 }
JMF 12:0071cb144c7a 124 }
JMF 12:0071cb144c7a 125 else /* MBEDTLS_XTEA_DECRYPT */
JMF 12:0071cb144c7a 126 {
JMF 12:0071cb144c7a 127 uint32_t delta = 0x9E3779B9, sum = delta * 32;
JMF 12:0071cb144c7a 128
JMF 12:0071cb144c7a 129 for( i = 0; i < 32; i++ )
JMF 12:0071cb144c7a 130 {
JMF 12:0071cb144c7a 131 v1 -= (((v0 << 4) ^ (v0 >> 5)) + v0) ^ (sum + k[(sum>>11) & 3]);
JMF 12:0071cb144c7a 132 sum -= delta;
JMF 12:0071cb144c7a 133 v0 -= (((v1 << 4) ^ (v1 >> 5)) + v1) ^ (sum + k[sum & 3]);
JMF 12:0071cb144c7a 134 }
JMF 12:0071cb144c7a 135 }
JMF 12:0071cb144c7a 136
JMF 12:0071cb144c7a 137 PUT_UINT32_BE( v0, output, 0 );
JMF 12:0071cb144c7a 138 PUT_UINT32_BE( v1, output, 4 );
JMF 12:0071cb144c7a 139
JMF 12:0071cb144c7a 140 return( 0 );
JMF 12:0071cb144c7a 141 }
JMF 12:0071cb144c7a 142
JMF 12:0071cb144c7a 143 #if defined(MBEDTLS_CIPHER_MODE_CBC)
JMF 12:0071cb144c7a 144 /*
JMF 12:0071cb144c7a 145 * XTEA-CBC buffer encryption/decryption
JMF 12:0071cb144c7a 146 */
JMF 12:0071cb144c7a 147 int mbedtls_xtea_crypt_cbc( mbedtls_xtea_context *ctx, int mode, size_t length,
JMF 12:0071cb144c7a 148 unsigned char iv[8], const unsigned char *input,
JMF 12:0071cb144c7a 149 unsigned char *output)
JMF 12:0071cb144c7a 150 {
JMF 12:0071cb144c7a 151 int i;
JMF 12:0071cb144c7a 152 unsigned char temp[8];
JMF 12:0071cb144c7a 153
JMF 12:0071cb144c7a 154 if( length % 8 )
JMF 12:0071cb144c7a 155 return( MBEDTLS_ERR_XTEA_INVALID_INPUT_LENGTH );
JMF 12:0071cb144c7a 156
JMF 12:0071cb144c7a 157 if( mode == MBEDTLS_XTEA_DECRYPT )
JMF 12:0071cb144c7a 158 {
JMF 12:0071cb144c7a 159 while( length > 0 )
JMF 12:0071cb144c7a 160 {
JMF 12:0071cb144c7a 161 memcpy( temp, input, 8 );
JMF 12:0071cb144c7a 162 mbedtls_xtea_crypt_ecb( ctx, mode, input, output );
JMF 12:0071cb144c7a 163
JMF 12:0071cb144c7a 164 for( i = 0; i < 8; i++ )
JMF 12:0071cb144c7a 165 output[i] = (unsigned char)( output[i] ^ iv[i] );
JMF 12:0071cb144c7a 166
JMF 12:0071cb144c7a 167 memcpy( iv, temp, 8 );
JMF 12:0071cb144c7a 168
JMF 12:0071cb144c7a 169 input += 8;
JMF 12:0071cb144c7a 170 output += 8;
JMF 12:0071cb144c7a 171 length -= 8;
JMF 12:0071cb144c7a 172 }
JMF 12:0071cb144c7a 173 }
JMF 12:0071cb144c7a 174 else
JMF 12:0071cb144c7a 175 {
JMF 12:0071cb144c7a 176 while( length > 0 )
JMF 12:0071cb144c7a 177 {
JMF 12:0071cb144c7a 178 for( i = 0; i < 8; i++ )
JMF 12:0071cb144c7a 179 output[i] = (unsigned char)( input[i] ^ iv[i] );
JMF 12:0071cb144c7a 180
JMF 12:0071cb144c7a 181 mbedtls_xtea_crypt_ecb( ctx, mode, output, output );
JMF 12:0071cb144c7a 182 memcpy( iv, output, 8 );
JMF 12:0071cb144c7a 183
JMF 12:0071cb144c7a 184 input += 8;
JMF 12:0071cb144c7a 185 output += 8;
JMF 12:0071cb144c7a 186 length -= 8;
JMF 12:0071cb144c7a 187 }
JMF 12:0071cb144c7a 188 }
JMF 12:0071cb144c7a 189
JMF 12:0071cb144c7a 190 return( 0 );
JMF 12:0071cb144c7a 191 }
JMF 12:0071cb144c7a 192 #endif /* MBEDTLS_CIPHER_MODE_CBC */
JMF 12:0071cb144c7a 193 #endif /* !MBEDTLS_XTEA_ALT */
JMF 12:0071cb144c7a 194
JMF 12:0071cb144c7a 195 #if defined(MBEDTLS_SELF_TEST)
JMF 12:0071cb144c7a 196
JMF 12:0071cb144c7a 197 /*
JMF 12:0071cb144c7a 198 * XTEA tests vectors (non-official)
JMF 12:0071cb144c7a 199 */
JMF 12:0071cb144c7a 200
JMF 12:0071cb144c7a 201 static const unsigned char xtea_test_key[6][16] =
JMF 12:0071cb144c7a 202 {
JMF 12:0071cb144c7a 203 { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b,
JMF 12:0071cb144c7a 204 0x0c, 0x0d, 0x0e, 0x0f },
JMF 12:0071cb144c7a 205 { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b,
JMF 12:0071cb144c7a 206 0x0c, 0x0d, 0x0e, 0x0f },
JMF 12:0071cb144c7a 207 { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b,
JMF 12:0071cb144c7a 208 0x0c, 0x0d, 0x0e, 0x0f },
JMF 12:0071cb144c7a 209 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
JMF 12:0071cb144c7a 210 0x00, 0x00, 0x00, 0x00 },
JMF 12:0071cb144c7a 211 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
JMF 12:0071cb144c7a 212 0x00, 0x00, 0x00, 0x00 },
JMF 12:0071cb144c7a 213 { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
JMF 12:0071cb144c7a 214 0x00, 0x00, 0x00, 0x00 }
JMF 12:0071cb144c7a 215 };
JMF 12:0071cb144c7a 216
JMF 12:0071cb144c7a 217 static const unsigned char xtea_test_pt[6][8] =
JMF 12:0071cb144c7a 218 {
JMF 12:0071cb144c7a 219 { 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48 },
JMF 12:0071cb144c7a 220 { 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41 },
JMF 12:0071cb144c7a 221 { 0x5a, 0x5b, 0x6e, 0x27, 0x89, 0x48, 0xd7, 0x7f },
JMF 12:0071cb144c7a 222 { 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48 },
JMF 12:0071cb144c7a 223 { 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41 },
JMF 12:0071cb144c7a 224 { 0x70, 0xe1, 0x22, 0x5d, 0x6e, 0x4e, 0x76, 0x55 }
JMF 12:0071cb144c7a 225 };
JMF 12:0071cb144c7a 226
JMF 12:0071cb144c7a 227 static const unsigned char xtea_test_ct[6][8] =
JMF 12:0071cb144c7a 228 {
JMF 12:0071cb144c7a 229 { 0x49, 0x7d, 0xf3, 0xd0, 0x72, 0x61, 0x2c, 0xb5 },
JMF 12:0071cb144c7a 230 { 0xe7, 0x8f, 0x2d, 0x13, 0x74, 0x43, 0x41, 0xd8 },
JMF 12:0071cb144c7a 231 { 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41 },
JMF 12:0071cb144c7a 232 { 0xa0, 0x39, 0x05, 0x89, 0xf8, 0xb8, 0xef, 0xa5 },
JMF 12:0071cb144c7a 233 { 0xed, 0x23, 0x37, 0x5a, 0x82, 0x1a, 0x8c, 0x2d },
JMF 12:0071cb144c7a 234 { 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41 }
JMF 12:0071cb144c7a 235 };
JMF 12:0071cb144c7a 236
JMF 12:0071cb144c7a 237 /*
JMF 12:0071cb144c7a 238 * Checkup routine
JMF 12:0071cb144c7a 239 */
JMF 12:0071cb144c7a 240 int mbedtls_xtea_self_test( int verbose )
JMF 12:0071cb144c7a 241 {
JMF 12:0071cb144c7a 242 int i, ret = 0;
JMF 12:0071cb144c7a 243 unsigned char buf[8];
JMF 12:0071cb144c7a 244 mbedtls_xtea_context ctx;
JMF 12:0071cb144c7a 245
JMF 12:0071cb144c7a 246 mbedtls_xtea_init( &ctx );
JMF 12:0071cb144c7a 247 for( i = 0; i < 6; i++ )
JMF 12:0071cb144c7a 248 {
JMF 12:0071cb144c7a 249 if( verbose != 0 )
JMF 12:0071cb144c7a 250 mbedtls_printf( " XTEA test #%d: ", i + 1 );
JMF 12:0071cb144c7a 251
JMF 12:0071cb144c7a 252 memcpy( buf, xtea_test_pt[i], 8 );
JMF 12:0071cb144c7a 253
JMF 12:0071cb144c7a 254 mbedtls_xtea_setup( &ctx, xtea_test_key[i] );
JMF 12:0071cb144c7a 255 mbedtls_xtea_crypt_ecb( &ctx, MBEDTLS_XTEA_ENCRYPT, buf, buf );
JMF 12:0071cb144c7a 256
JMF 12:0071cb144c7a 257 if( memcmp( buf, xtea_test_ct[i], 8 ) != 0 )
JMF 12:0071cb144c7a 258 {
JMF 12:0071cb144c7a 259 if( verbose != 0 )
JMF 12:0071cb144c7a 260 mbedtls_printf( "failed\n" );
JMF 12:0071cb144c7a 261
JMF 12:0071cb144c7a 262 ret = 1;
JMF 12:0071cb144c7a 263 goto exit;
JMF 12:0071cb144c7a 264 }
JMF 12:0071cb144c7a 265
JMF 12:0071cb144c7a 266 if( verbose != 0 )
JMF 12:0071cb144c7a 267 mbedtls_printf( "passed\n" );
JMF 12:0071cb144c7a 268 }
JMF 12:0071cb144c7a 269
JMF 12:0071cb144c7a 270 if( verbose != 0 )
JMF 12:0071cb144c7a 271 mbedtls_printf( "\n" );
JMF 12:0071cb144c7a 272
JMF 12:0071cb144c7a 273 exit:
JMF 12:0071cb144c7a 274 mbedtls_xtea_free( &ctx );
JMF 12:0071cb144c7a 275
JMF 12:0071cb144c7a 276 return( ret );
JMF 12:0071cb144c7a 277 }
JMF 12:0071cb144c7a 278
JMF 12:0071cb144c7a 279 #endif /* MBEDTLS_SELF_TEST */
JMF 12:0071cb144c7a 280
JMF 12:0071cb144c7a 281 #endif /* MBEDTLS_XTEA_C */