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Merge pull request #6960 from emmanuelsearch/delete-3des

sys: crypto: Remove 3DES crypto
master
Martine Lenders 6 years ago committed by GitHub
parent
commit
006b12e4b3
  1. 522
      sys/crypto/3des.c
  2. 2
      sys/crypto/doc.txt
  3. 137
      sys/include/crypto/3des.h
  4. 1
      sys/include/crypto/ciphers.h
  5. 92
      tests/unittests/tests-crypto/tests-crypto-3des.c
  6. 1
      tests/unittests/tests-crypto/tests-crypto.c
  7. 1
      tests/unittests/tests-crypto/tests-crypto.h

522
sys/crypto/3des.c

@ -1,522 +0,0 @@
/*
* Copyright (C) 2013 Freie Universität Berlin, Computer Systems & Telematics
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @ingroup sys_crypto
* @{
*
* @file
* @brief implementation of the 3DES cipher-algorithm
*
* @author Freie Universitaet Berlin, Computer Systems & Telematics
* @author Nicolai Schmittberger <nicolai.schmittberger@fu-berlin.de>
* @author Tom St Denis <tomstdenis@gmail.com>, http://libtomcrypt.com
* @author Dobes Vandermeer
* @author Zakaria Kasmi <zkasmi@inf.fu-berlin.de>
*
* @date 18.09.2013 14:32:33
*
* @note This implementation is based on a DES implementation included
* in the LibTomCrypt modular cryptographic library.
* The LibTomCrypt library provides various cryptographic
* algorithms in a highly modular and flexible manner.
* The library is free for all purposes without any express
* guarantee it works.
* Tom St Denis, tomstdenis@gmail.com, http://libtomcrypt.com
* DES code submitted by Dobes Vandermeer
* @}
*/
#include <stdio.h>
#include <stdarg.h>
#include <string.h>
#include <stdlib.h>
#include <stdint.h>
#include "crypto/3des.h"
#include "crypto/ciphers.h"
#define ENABLE_DEBUG (0)
#include "debug.h"
/*************** GLOBALS ******************/
/**
* @brief Interface to the 3DES cipher
*/
static const cipher_interface_t tripledes_interface = {
THREEDES_BLOCK_SIZE,
THREEDES_MAX_KEY_SIZE,
tripledes_init,
tripledes_encrypt,
tripledes_decrypt
};
const cipher_id_t CIPHER_3DES = &tripledes_interface;
/**
* @brief struct for the 3DES key expansion
*/
struct des3_key_s {
uint32_t ek[3][32]; ///< encryption key
uint32_t dk[3][32]; ///< decryption key
} des3_key_s;
/************** PROTOTYPES ***************/
static void cookey(const uint32_t *raw1, uint32_t *keyout);
static void deskey(const uint8_t *key, int decrypt, uint32_t *keyout);
static void desfunc(uint32_t *block, const uint32_t *keys);
static uint8_t des3_key_setup(const uint8_t *key, struct des3_key_s *dkey);
/*****************************************/
/* Use the key schedule specific in the standard (ANSI X3.92-1981) */
static const uint8_t pc1[56] = {
56, 48, 40, 32, 24, 16, 8, 0, 57, 49, 41, 33, 25, 17,
9, 1, 58, 50, 42, 34, 26, 18, 10, 2, 59, 51, 43, 35,
62, 54, 46, 38, 30, 22, 14, 6, 61, 53, 45, 37, 29, 21,
13, 5, 60, 52, 44, 36, 28, 20, 12, 4, 27, 19, 11, 3
};
static const uint8_t totrot[16] = {
1, 2, 4, 6,
8, 10, 12, 14,
15, 17, 19, 21,
23, 25, 27, 28
};
static const uint8_t pc2[48] = {
13, 16, 10, 23, 0, 4, 2, 27, 14, 5, 20, 9,
22, 18, 11, 3, 25, 7, 15, 6, 26, 19, 12, 1,
40, 51, 30, 36, 46, 54, 29, 39, 50, 44, 32, 47,
43, 48, 38, 55, 33, 52, 45, 41, 49, 35, 28, 31
};
static const uint32_t SP1[64] = {
0x01010400UL, 0x00000000UL, 0x00010000UL, 0x01010404UL,
0x01010004UL, 0x00010404UL, 0x00000004UL, 0x00010000UL,
0x00000400UL, 0x01010400UL, 0x01010404UL, 0x00000400UL,
0x01000404UL, 0x01010004UL, 0x01000000UL, 0x00000004UL,
0x00000404UL, 0x01000400UL, 0x01000400UL, 0x00010400UL,
0x00010400UL, 0x01010000UL, 0x01010000UL, 0x01000404UL,
0x00010004UL, 0x01000004UL, 0x01000004UL, 0x00010004UL,
0x00000000UL, 0x00000404UL, 0x00010404UL, 0x01000000UL,
0x00010000UL, 0x01010404UL, 0x00000004UL, 0x01010000UL,
0x01010400UL, 0x01000000UL, 0x01000000UL, 0x00000400UL,
0x01010004UL, 0x00010000UL, 0x00010400UL, 0x01000004UL,
0x00000400UL, 0x00000004UL, 0x01000404UL, 0x00010404UL,
0x01010404UL, 0x00010004UL, 0x01010000UL, 0x01000404UL,
0x01000004UL, 0x00000404UL, 0x00010404UL, 0x01010400UL,
0x00000404UL, 0x01000400UL, 0x01000400UL, 0x00000000UL,
0x00010004UL, 0x00010400UL, 0x00000000UL, 0x01010004UL
};
static const uint32_t SP2[64] = {
0x80108020UL, 0x80008000UL, 0x00008000UL, 0x00108020UL,
0x00100000UL, 0x00000020UL, 0x80100020UL, 0x80008020UL,
0x80000020UL, 0x80108020UL, 0x80108000UL, 0x80000000UL,
0x80008000UL, 0x00100000UL, 0x00000020UL, 0x80100020UL,
0x00108000UL, 0x00100020UL, 0x80008020UL, 0x00000000UL,
0x80000000UL, 0x00008000UL, 0x00108020UL, 0x80100000UL,
0x00100020UL, 0x80000020UL, 0x00000000UL, 0x00108000UL,
0x00008020UL, 0x80108000UL, 0x80100000UL, 0x00008020UL,
0x00000000UL, 0x00108020UL, 0x80100020UL, 0x00100000UL,
0x80008020UL, 0x80100000UL, 0x80108000UL, 0x00008000UL,
0x80100000UL, 0x80008000UL, 0x00000020UL, 0x80108020UL,
0x00108020UL, 0x00000020UL, 0x00008000UL, 0x80000000UL,
0x00008020UL, 0x80108000UL, 0x00100000UL, 0x80000020UL,
0x00100020UL, 0x80008020UL, 0x80000020UL, 0x00100020UL,
0x00108000UL, 0x00000000UL, 0x80008000UL, 0x00008020UL,
0x80000000UL, 0x80100020UL, 0x80108020UL, 0x00108000UL
};
static const uint32_t SP3[64] = {
0x00000208UL, 0x08020200UL, 0x00000000UL, 0x08020008UL,
0x08000200UL, 0x00000000UL, 0x00020208UL, 0x08000200UL,
0x00020008UL, 0x08000008UL, 0x08000008UL, 0x00020000UL,
0x08020208UL, 0x00020008UL, 0x08020000UL, 0x00000208UL,
0x08000000UL, 0x00000008UL, 0x08020200UL, 0x00000200UL,
0x00020200UL, 0x08020000UL, 0x08020008UL, 0x00020208UL,
0x08000208UL, 0x00020200UL, 0x00020000UL, 0x08000208UL,
0x00000008UL, 0x08020208UL, 0x00000200UL, 0x08000000UL,
0x08020200UL, 0x08000000UL, 0x00020008UL, 0x00000208UL,
0x00020000UL, 0x08020200UL, 0x08000200UL, 0x00000000UL,
0x00000200UL, 0x00020008UL, 0x08020208UL, 0x08000200UL,
0x08000008UL, 0x00000200UL, 0x00000000UL, 0x08020008UL,
0x08000208UL, 0x00020000UL, 0x08000000UL, 0x08020208UL,
0x00000008UL, 0x00020208UL, 0x00020200UL, 0x08000008UL,
0x08020000UL, 0x08000208UL, 0x00000208UL, 0x08020000UL,
0x00020208UL, 0x00000008UL, 0x08020008UL, 0x00020200UL
};
static const uint32_t SP4[64] = {
0x00802001UL, 0x00002081UL, 0x00002081UL, 0x00000080UL,
0x00802080UL, 0x00800081UL, 0x00800001UL, 0x00002001UL,
0x00000000UL, 0x00802000UL, 0x00802000UL, 0x00802081UL,
0x00000081UL, 0x00000000UL, 0x00800080UL, 0x00800001UL,
0x00000001UL, 0x00002000UL, 0x00800000UL, 0x00802001UL,
0x00000080UL, 0x00800000UL, 0x00002001UL, 0x00002080UL,
0x00800081UL, 0x00000001UL, 0x00002080UL, 0x00800080UL,
0x00002000UL, 0x00802080UL, 0x00802081UL, 0x00000081UL,
0x00800080UL, 0x00800001UL, 0x00802000UL, 0x00802081UL,
0x00000081UL, 0x00000000UL, 0x00000000UL, 0x00802000UL,
0x00002080UL, 0x00800080UL, 0x00800081UL, 0x00000001UL,
0x00802001UL, 0x00002081UL, 0x00002081UL, 0x00000080UL,
0x00802081UL, 0x00000081UL, 0x00000001UL, 0x00002000UL,
0x00800001UL, 0x00002001UL, 0x00802080UL, 0x00800081UL,
0x00002001UL, 0x00002080UL, 0x00800000UL, 0x00802001UL,
0x00000080UL, 0x00800000UL, 0x00002000UL, 0x00802080UL
};
static const uint32_t SP5[64] = {
0x00000100UL, 0x02080100UL, 0x02080000UL, 0x42000100UL,
0x00080000UL, 0x00000100UL, 0x40000000UL, 0x02080000UL,
0x40080100UL, 0x00080000UL, 0x02000100UL, 0x40080100UL,
0x42000100UL, 0x42080000UL, 0x00080100UL, 0x40000000UL,
0x02000000UL, 0x40080000UL, 0x40080000UL, 0x00000000UL,
0x40000100UL, 0x42080100UL, 0x42080100UL, 0x02000100UL,
0x42080000UL, 0x40000100UL, 0x00000000UL, 0x42000000UL,
0x02080100UL, 0x02000000UL, 0x42000000UL, 0x00080100UL,
0x00080000UL, 0x42000100UL, 0x00000100UL, 0x02000000UL,
0x40000000UL, 0x02080000UL, 0x42000100UL, 0x40080100UL,
0x02000100UL, 0x40000000UL, 0x42080000UL, 0x02080100UL,
0x40080100UL, 0x00000100UL, 0x02000000UL, 0x42080000UL,
0x42080100UL, 0x00080100UL, 0x42000000UL, 0x42080100UL,
0x02080000UL, 0x00000000UL, 0x40080000UL, 0x42000000UL,
0x00080100UL, 0x02000100UL, 0x40000100UL, 0x00080000UL,
0x00000000UL, 0x40080000UL, 0x02080100UL, 0x40000100UL
};
static const uint32_t SP6[64] = {
0x20000010UL, 0x20400000UL, 0x00004000UL, 0x20404010UL,
0x20400000UL, 0x00000010UL, 0x20404010UL, 0x00400000UL,
0x20004000UL, 0x00404010UL, 0x00400000UL, 0x20000010UL,
0x00400010UL, 0x20004000UL, 0x20000000UL, 0x00004010UL,
0x00000000UL, 0x00400010UL, 0x20004010UL, 0x00004000UL,
0x00404000UL, 0x20004010UL, 0x00000010UL, 0x20400010UL,
0x20400010UL, 0x00000000UL, 0x00404010UL, 0x20404000UL,
0x00004010UL, 0x00404000UL, 0x20404000UL, 0x20000000UL,
0x20004000UL, 0x00000010UL, 0x20400010UL, 0x00404000UL,
0x20404010UL, 0x00400000UL, 0x00004010UL, 0x20000010UL,
0x00400000UL, 0x20004000UL, 0x20000000UL, 0x00004010UL,
0x20000010UL, 0x20404010UL, 0x00404000UL, 0x20400000UL,
0x00404010UL, 0x20404000UL, 0x00000000UL, 0x20400010UL,
0x00000010UL, 0x00004000UL, 0x20400000UL, 0x00404010UL,
0x00004000UL, 0x00400010UL, 0x20004010UL, 0x00000000UL,
0x20404000UL, 0x20000000UL, 0x00400010UL, 0x20004010UL
};
static const uint32_t SP7[64] = {
0x00200000UL, 0x04200002UL, 0x04000802UL, 0x00000000UL,
0x00000800UL, 0x04000802UL, 0x00200802UL, 0x04200800UL,
0x04200802UL, 0x00200000UL, 0x00000000UL, 0x04000002UL,
0x00000002UL, 0x04000000UL, 0x04200002UL, 0x00000802UL,
0x04000800UL, 0x00200802UL, 0x00200002UL, 0x04000800UL,
0x04000002UL, 0x04200000UL, 0x04200800UL, 0x00200002UL,
0x04200000UL, 0x00000800UL, 0x00000802UL, 0x04200802UL,
0x00200800UL, 0x00000002UL, 0x04000000UL, 0x00200800UL,
0x04000000UL, 0x00200800UL, 0x00200000UL, 0x04000802UL,
0x04000802UL, 0x04200002UL, 0x04200002UL, 0x00000002UL,
0x00200002UL, 0x04000000UL, 0x04000800UL, 0x00200000UL,
0x04200800UL, 0x00000802UL, 0x00200802UL, 0x04200800UL,
0x00000802UL, 0x04000002UL, 0x04200802UL, 0x04200000UL,
0x00200800UL, 0x00000000UL, 0x00000002UL, 0x04200802UL,
0x00000000UL, 0x00200802UL, 0x04200000UL, 0x00000800UL,
0x04000002UL, 0x04000800UL, 0x00000800UL, 0x00200002UL
};
static const uint32_t SP8[64] = {
0x10001040UL, 0x00001000UL, 0x00040000UL, 0x10041040UL,
0x10000000UL, 0x10001040UL, 0x00000040UL, 0x10000000UL,
0x00040040UL, 0x10040000UL, 0x10041040UL, 0x00041000UL,
0x10041000UL, 0x00041040UL, 0x00001000UL, 0x00000040UL,
0x10040000UL, 0x10000040UL, 0x10001000UL, 0x00001040UL,
0x00041000UL, 0x00040040UL, 0x10040040UL, 0x10041000UL,
0x00001040UL, 0x00000000UL, 0x00000000UL, 0x10040040UL,
0x10000040UL, 0x10001000UL, 0x00041040UL, 0x00040000UL,
0x00041040UL, 0x00040000UL, 0x10041000UL, 0x00001000UL,
0x00000040UL, 0x10040040UL, 0x00001000UL, 0x00041040UL,
0x10001000UL, 0x00000040UL, 0x10000040UL, 0x10040000UL,
0x10040040UL, 0x10000000UL, 0x00040000UL, 0x10001040UL,
0x00000000UL, 0x10041040UL, 0x00040040UL, 0x10000040UL,
0x10040000UL, 0x10001000UL, 0x10001040UL, 0x00000000UL,
0x10041040UL, 0x00041000UL, 0x00041000UL, 0x00001040UL,
0x00001040UL, 0x00040040UL, 0x10000000UL, 0x10041000UL
};
int tripledes_init(cipher_context_t *context, const uint8_t *key,
uint8_t keySize)
{
uint8_t i;
// Make sure that context is large enough. If this is not the case,
// you should build with -DTHREEDES
if(CIPHER_MAX_CONTEXT_SIZE < THREEDES_MAX_KEY_SIZE) {
return CIPHER_ERR_BAD_CONTEXT_SIZE;
}
//key must be at least 24 Bytes long
if (keySize < 24) {
//fill up by concatenating key to as long as needed
for (i = 0; i < 24; i++) {
context->context[i] = key[(i % keySize)];
}
}
else {
for (i = 0; i < 24; i++) {
context->context[i] = key[i];
}
}
return CIPHER_INIT_SUCCESS;
}
int tripledes_encrypt(const cipher_context_t *context, const uint8_t *plain, uint8_t *crypt)
{
int res;
struct des3_key_s *key = malloc(sizeof(des3_key_s));
uint32_t work[2];
if (!key) {
DEBUG("%s:%d in %s: [ERROR] Could NOT malloc space for the des3_key_s struct.\r\n",
RIOT_FILE_RELATIVE, __LINE__, DEBUG_FUNC);
return -1;
}
memset(key, 0, sizeof(des3_key_s));
res = des3_key_setup(context->context, key);
if (res < 0) {
DEBUG("%s:%d in %s: [ERROR] des3_key_setup failed with Code %i\r\n",
RIOT_FILE_RELATIVE, __LINE__, DEBUG_FUNC, res);
free(key);
return -2;
}
work[0] = WPA_GET_BE32(plain);
work[1] = WPA_GET_BE32(plain + 4);
desfunc(work, key->ek[0]);
desfunc(work, key->ek[1]);
desfunc(work, key->ek[2]);
WPA_PUT_BE32(crypt, work[0]);
WPA_PUT_BE32(crypt + 4, work[1]);
free(key);
return 1;
}
int tripledes_decrypt(const cipher_context_t *context, const uint8_t *crypt, uint8_t *plain)
{
int res;
struct des3_key_s *key = malloc(sizeof(des3_key_s));
uint32_t work[2];
if (!key) {
DEBUG("%s:%d in %s: [ERROR] Could NOT malloc space for the des3_key_s struct.\r\n",
RIOT_FILE_RELATIVE, __LINE__, DEBUG_FUNC);
return -1;
}
memset(key, 0, sizeof(des3_key_s));
res = des3_key_setup(context->context, key);
if (res < 0) {
DEBUG("%s:%d in %s: [ERROR] des3_key_setup failed with Code %i\r\n",
RIOT_FILE_RELATIVE, __LINE__, DEBUG_FUNC, res);
free(key);
return -2;
}
work[0] = WPA_GET_BE32(crypt);
work[1] = WPA_GET_BE32(crypt + 4);
desfunc(work, key->dk[0]);
desfunc(work, key->dk[1]);
desfunc(work, key->dk[2]);
WPA_PUT_BE32(plain, work[0]);
WPA_PUT_BE32(plain + 4, work[1]);
free(key);
return 1;
}
static void cookey(const uint32_t *raw1, uint32_t *keyout)
{
uint32_t *cook;
uint32_t dough[32];
int i;
cook = dough;
for (i = 0; i < 16; i++, raw1++) {
const uint32_t *raw0 = raw1++;
*cook = (*raw0 & 0x00fc0000L) << 6;
*cook |= (*raw0 & 0x00000fc0L) << 10;
*cook |= (*raw1 & 0x00fc0000L) >> 10;
*cook++ |= (*raw1 & 0x00000fc0L) >> 6;
*cook = (*raw0 & 0x0003f000L) << 12;
*cook |= (*raw0 & 0x0000003fL) << 16;
*cook |= (*raw1 & 0x0003f000L) >> 4;
*cook++ |= (*raw1 & 0x0000003fL);
}
memcpy(keyout, dough, sizeof(dough));
}
static void deskey(const uint8_t *key, int decrypt, uint32_t *keyout)
{
uint32_t i, j, l, m, kn[32];
uint8_t pc1m[56], pcr[56];
for (j = 0; j < 56; j++) {
l = (uint32_t) pc1[j];
m = l & 7;
pc1m[j] = (uint8_t)
((key[l >> 3U] & bytebit[m]) == bytebit[m] ? 1 : 0);
}
for (i = 0; i < 16; i++) {
if (decrypt) {
m = (15 - i) << 1;
}
else {
m = i << 1;
}
uint32_t n = m + 1;
kn[m] = kn[n] = 0L;
for (j = 0; j < 28; j++) {
l = j + (uint32_t) totrot[i];
if (l < 28) {
pcr[j] = pc1m[l];
}
else {
pcr[j] = pc1m[l - 28];
}
}
for (/* j = 28 */; j < 56; j++) {
l = j + (uint32_t) totrot[i];
if (l < 56) {
pcr[j] = pc1m[l];
}
else {
pcr[j] = pc1m[l - 28];
}
}
for (j = 0; j < 24; j++) {
if ((int) pcr[(int) pc2[j]] != 0) {
kn[m] |= bigbyte[j];
}
if ((int) pcr[(int) pc2[j + 24]] != 0) {
kn[n] |= bigbyte[j];
}
}
}
cookey(kn, keyout);
}
static void desfunc(uint32_t *block, const uint32_t *keys)
{
uint32_t work, right, leftt;
int cur_round;
leftt = block[0];
right = block[1];
work = ((leftt >> 4) ^ right) & 0x0f0f0f0fL;
right ^= work;
leftt ^= (work << 4);
work = ((leftt >> 16) ^ right) & 0x0000ffffL;
right ^= work;
leftt ^= (work << 16);
work = ((right >> 2) ^ leftt) & 0x33333333L;
leftt ^= work;
right ^= (work << 2);
work = ((right >> 8) ^ leftt) & 0x00ff00ffL;
leftt ^= work;
right ^= (work << 8);
right = ROLc(right, 1);
work = (leftt ^ right) & 0xaaaaaaaaL;
leftt ^= work;
right ^= work;
leftt = ROLc(leftt, 1);
for (cur_round = 0; cur_round < 8; cur_round++) {
work = RORc(right, 4) ^ *keys++;
leftt ^= SP7[work & 0x3fL]
^ SP5[(work >> 8) & 0x3fL]
^ SP3[(work >> 16) & 0x3fL]
^ SP1[(work >> 24) & 0x3fL];
work = right ^ *keys++;
leftt ^= SP8[ work & 0x3fL]
^ SP6[(work >> 8) & 0x3fL]
^ SP4[(work >> 16) & 0x3fL]
^ SP2[(work >> 24) & 0x3fL];
work = RORc(leftt, 4) ^ *keys++;
right ^= SP7[ work & 0x3fL]
^ SP5[(work >> 8) & 0x3fL]
^ SP3[(work >> 16) & 0x3fL]
^ SP1[(work >> 24) & 0x3fL];
work = leftt ^ *keys++;
right ^= SP8[ work & 0x3fL]
^ SP6[(work >> 8) & 0x3fL]
^ SP4[(work >> 16) & 0x3fL]
^ SP2[(work >> 24) & 0x3fL];
}
right = RORc(right, 1);
work = (leftt ^ right) & 0xaaaaaaaaL;
leftt ^= work;
right ^= work;
leftt = RORc(leftt, 1);
work = ((leftt >> 8) ^ right) & 0x00ff00ffL;
right ^= work;
leftt ^= (work << 8);
/* -- */
work = ((leftt >> 2) ^ right) & 0x33333333L;
right ^= work;
leftt ^= (work << 2);
work = ((right >> 16) ^ leftt) & 0x0000ffffL;
leftt ^= work;
right ^= (work << 16);
work = ((right >> 4) ^ leftt) & 0x0f0f0f0fL;
leftt ^= work;
right ^= (work << 4);
block[0] = right;
block[1] = leftt;
}
static uint8_t des3_key_setup(const uint8_t *key, struct des3_key_s *dkey)
{
deskey(key, 0, dkey->ek[0]);
deskey(key + 8, 1, dkey->ek[1]);
deskey(key + 16, 0, dkey->ek[2]);
deskey(key, 1, dkey->dk[2]);
deskey(key + 8, 0, dkey->dk[1]);
deskey(key + 16, 1, dkey->dk[0]);
return 1;
}

2
sys/crypto/doc.txt

@ -17,7 +17,6 @@
*
* Riot supports the following block ciphers:
* * AES-128
* * 3DES
* * NULL
*
* You can use them directly by adding "crypto" to your USEMODULE-List.
@ -26,7 +25,6 @@
*
* Additionally you need to set a CFLAG for each cipher you want to use in your Makefile:
* * AES-128: CFLAGS += -DCRYPTO_AES
* * 3DES: CFLAGS += -DCRYPTO_THREEDES
* Setting the CFLAGS initializes a sufficient large buffer size of the cipher_context_t,
* used by the ciphers for en-/de-cryption operations.
*

137
sys/include/crypto/3des.h

@ -1,137 +0,0 @@
/*
* Copyright (C) 2013 Freie Universität Berlin, Computer Systems & Telematics
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @ingroup sys_crypto
* @{
*
* @file
* @brief Headers for the implementation of the 3DES cipher-algorithm
*
* @author Freie Universitaet Berlin, Computer Systems & Telematics,
* @author Nicolai Schmittberger (nicolai.schmittberger@fu-berlin.de)
* @author Zakaria Kasmi <zkasmi@inf.fu-berlin.de>
*/
#include <stdio.h>
#include <stdarg.h>
#include <string.h>
#include <stdlib.h>
#include <stdint.h>
#include "crypto/ciphers.h"
#ifndef THREEDES_H
#define THREEDES_H
#ifdef __cplusplus
extern "C" {
#endif
#define THREEDES_BLOCK_SIZE 8
#define THREEDES_MAX_KEY_SIZE 24
#define ROLc(x, y) \
((((unsigned long) (x) << (unsigned long) ((y) & 31)) | \
(((unsigned long) (x) & 0xFFFFFFFFUL) >> \
(unsigned long) (32 - ((y) & 31)))) & 0xFFFFFFFFUL)
#define RORc(x, y) \
(((((unsigned long) (x) & 0xFFFFFFFFUL) >> \
(unsigned long) ((y) & 31)) | \
((unsigned long) (x) << (unsigned long) (32 - ((y) & 31)))) & \
0xFFFFFFFFUL)
//source: http://hostap.epitest.fi/wpa_supplicant/devel/common_8h.html
#define WPA_GET_BE32(a) \
((((uint32_t) (a)[0]) << 24) | \
(((uint32_t) (a)[1]) << 16) | \
(((uint32_t) (a)[2]) << 8 ) | ((uint32_t) (a)[3]))
//source: http://hostap.epitest.fi/wpa_supplicant/devel/common_8h.html
#define WPA_PUT_BE32(a, val) \
do { \
(a)[0] = (uint8_t) ((((uint32_t) (val)) >> 24) & 0xff); \
(a)[1] = (uint8_t) ((((uint32_t) (val)) >> 16) & 0xff); \
(a)[2] = (uint8_t) ((((uint32_t) (val)) >> 8) & 0xff); \
(a)[3] = (uint8_t) (((uint32_t) (val)) & 0xff); \
} while (0)
static const uint32_t bytebit[8] = {0200, 0100, 040, 020, 010, 04, 02, 01};
static const uint32_t bigbyte[24] = {
0x800000UL, 0x400000UL, 0x200000UL, 0x100000UL,
0x80000UL, 0x40000UL, 0x20000UL, 0x10000UL,
0x8000UL, 0x4000UL, 0x2000UL, 0x1000UL,
0x800UL, 0x400UL, 0x200UL, 0x100UL,
0x80UL, 0x40UL, 0x20UL, 0x10UL,
0x8UL, 0x4UL, 0x2UL, 0x1L
};
/**
* @brief initializes the 3DES Cipher-algorithm with the passed
* parameters
*
* @param context the cipher_context_t-struct to save the
* initialization of the cipher in
* @param key a pointer to the key
* @param keySize the size of the key
*
* @return CIPHER_INIT_SUCCESS if the initialization was successful.
* The command may be unsuccessful if the key size is not valid.
* CIPHER_ERR_BAD_CONTEXT_SIZE if CIPHER_MAX_CONTEXT_SIZE has not been defined (which means that the cipher has not been included in the build)
*/
int tripledes_init(cipher_context_t *context, const uint8_t* key, uint8_t keySize);
/**
* @brief encrypts one plain-block and saves the result in crypt.
* encrypts one blocksize long block of plaintext pointed to by
* plain to one blocksize long block of ciphertext which will be
* written to the the memory-area pointed to by crypt
*
* @param context the cipher_context_t-struct to use for this
* encryption
* @param plain a pointer to the plaintext-block (of size
* blocksize)
* @param crypt a pointer to the place where the ciphertext will
* be stored
*
* @return -1 if no space for the key could be malloced
* -2 if the key could not be setup correctly
* 1 if encryption was successful
*/
int tripledes_encrypt(const cipher_context_t *context, const uint8_t *plain, uint8_t *crypt);
/**
* @brief decrypts one cipher-block and saves the plain-block in plain.
* decrypts one blocksize long block of ciphertext pointed to by
* crypt to one blocksize long block of plaintext and stores the
* plaintext in the memory-area pointed to by plain
*
* @param context the cipher_context_t-struct to use for this
* decryption
* @param crypt a pointer to the ciphertext-block (of size blocksize)
* to be decrypted
* @param plain a pointer to the place where the decrypted plaintext
* will be stored
*
* @return -1 if no space for the key could be malloced
* -2 if the key could not be setup correctly
* 1 if decryption was successful
*/
int tripledes_decrypt(const cipher_context_t *context, const uint8_t *crypt, uint8_t *plain);
#ifdef __cplusplus
}
#endif
/** @} */
#endif /* THREEDES_H */

1
sys/include/crypto/ciphers.h

@ -101,7 +101,6 @@ typedef struct cipher_interface_st {
typedef const cipher_interface_t *cipher_id_t;
extern const cipher_id_t CIPHER_3DES;
extern const cipher_id_t CIPHER_AES_128;

92
tests/unittests/tests-crypto/tests-crypto-3des.c

@ -1,92 +0,0 @@
/*
* Copyright (C) 2015 Nico von Geyso
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
#include <limits.h>
#include "embUnit.h"
#include "crypto/3des.h"
#include "tests-crypto.h"
static uint8_t TEST_0_KEY[] = {
0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7,
0x8, 0x9, 0xA, 0xB, 0xC, 0xD, 0xE, 0xF
};
static uint8_t TEST_0_INP[] = {
0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7
};
static uint8_t TEST_0_ENC[] = {
0xDF, 0x0B, 0x6C, 0x9C, 0x31, 0xCD, 0x0C, 0xE4
};
static uint8_t TEST_1_KEY[] = {
0x23, 0xA0, 0x18, 0x53, 0xFA, 0xB3, 0x89, 0x23,
0x65, 0x89, 0x2A, 0xBC, 0x43, 0x99, 0xCC, 0x00
};
static uint8_t TEST_1_INP[] = {
0x11, 0x53, 0x81, 0xE2, 0x5F, 0x33, 0xE7, 0x41
};
static uint8_t TEST_1_ENC[] = {
0x6C, 0x71, 0x5C, 0xC2, 0x58, 0x13, 0xEC, 0x6E
};
static void test_crypto_tripledes_encrypt(void)
{
cipher_context_t ctx;
int err;
uint8_t data[THREEDES_BLOCK_SIZE];
err = tripledes_init(&ctx, TEST_0_KEY, 16);
TEST_ASSERT_EQUAL_INT(1, err);
err = tripledes_encrypt(&ctx, TEST_0_INP, data);
TEST_ASSERT_EQUAL_INT(1, err);
TEST_ASSERT_MESSAGE(1 == compare(TEST_0_ENC, data, THREEDES_BLOCK_SIZE), "wrong ciphertext");
err = tripledes_init(&ctx, TEST_1_KEY, 16);
TEST_ASSERT_EQUAL_INT(1, err);
err = tripledes_encrypt(&ctx, TEST_1_INP, data);
TEST_ASSERT_EQUAL_INT(1, err);
TEST_ASSERT_MESSAGE(1 == compare(TEST_1_ENC, data, THREEDES_BLOCK_SIZE), "wrong ciphertext");
}
static void test_crypto_tripledes_decrypt(void)
{
cipher_context_t ctx;
int err;
uint8_t data[THREEDES_BLOCK_SIZE];
err = tripledes_init(&ctx, TEST_0_KEY, 16);
TEST_ASSERT_EQUAL_INT(1, err);
err = tripledes_decrypt(&ctx, TEST_0_ENC, data);
TEST_ASSERT_EQUAL_INT(1, err);
TEST_ASSERT_MESSAGE(1 == compare(TEST_0_INP, data, THREEDES_BLOCK_SIZE), "wrong plaintext");
err = tripledes_init(&ctx, TEST_1_KEY, 16);
TEST_ASSERT_EQUAL_INT(1, err);
err = tripledes_decrypt(&ctx, TEST_1_ENC, data);
TEST_ASSERT_EQUAL_INT(1, err);
TEST_ASSERT_MESSAGE(1 == compare(TEST_1_INP, data, THREEDES_BLOCK_SIZE), "wrong plaintext");
}
Test* tests_crypto_3des_tests(void)
{
EMB_UNIT_TESTFIXTURES(fixtures) {
new_TestFixture(test_crypto_tripledes_encrypt),
new_TestFixture(test_crypto_tripledes_decrypt),
};
EMB_UNIT_TESTCALLER(crypto_tripledes_tests, NULL, NULL, fixtures);
return (Test*)&crypto_tripledes_tests;
}

1
tests/unittests/tests-crypto/tests-crypto.c

@ -13,7 +13,6 @@ void tests_crypto(void)
{
TESTS_RUN(tests_crypto_chacha_tests());
TESTS_RUN(tests_crypto_aes_tests());
TESTS_RUN(tests_crypto_3des_tests());
TESTS_RUN(tests_crypto_cipher_tests());
TESTS_RUN(tests_crypto_modes_ccm_tests());
TESTS_RUN(tests_crypto_modes_ecb_tests());

1
tests/unittests/tests-crypto/tests-crypto.h

@ -52,7 +52,6 @@ static inline int compare(uint8_t *a, uint8_t *b, uint8_t len)
}
Test* tests_crypto_aes_tests(void);
Test* tests_crypto_3des_tests(void);
Test* tests_crypto_cipher_tests(void);
Test* tests_crypto_modes_ccm_tests(void);
Test* tests_crypto_modes_ecb_tests(void);

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