/* | |
* FIPS-46-3 compliant Triple-DES implementation | |
* | |
* Copyright (C) 2006-2015, ARM Limited, All Rights Reserved | |
* SPDX-License-Identifier: Apache-2.0 | |
* | |
* Licensed under the Apache License, Version 2.0 (the "License"); you may | |
* not use this file except in compliance with the License. | |
* You may obtain a copy of the License at | |
* | |
* http://www.apache.org/licenses/LICENSE-2.0 | |
* | |
* Unless required by applicable law or agreed to in writing, software | |
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT | |
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
* See the License for the specific language governing permissions and | |
* limitations under the License. | |
* | |
* This file is part of mbed TLS (https://tls.mbed.org) | |
*/ | |
/* | |
* DES, on which TDES is based, was originally designed by Horst Feistel | |
* at IBM in 1974, and was adopted as a standard by NIST (formerly NBS). | |
* | |
* http://csrc.nist.gov/publications/fips/fips46-3/fips46-3.pdf | |
*/ | |
#if !defined(MBEDTLS_CONFIG_FILE) | |
#include "mbedtls/config.h" | |
#else | |
#include MBEDTLS_CONFIG_FILE | |
#endif | |
#if defined(MBEDTLS_DES_C) | |
#include "mbedtls/des.h" | |
#include "mbedtls/platform_util.h" | |
#include <string.h> | |
#if defined(MBEDTLS_SELF_TEST) | |
#if defined(MBEDTLS_PLATFORM_C) | |
#include "mbedtls/platform.h" | |
#else | |
#include <stdio.h> | |
#define mbedtls_printf printf | |
#endif /* MBEDTLS_PLATFORM_C */ | |
#endif /* MBEDTLS_SELF_TEST */ | |
#if !defined(MBEDTLS_DES_ALT) | |
/* | |
* 32-bit integer manipulation macros (big endian) | |
*/ | |
#ifndef GET_UINT32_BE | |
#define GET_UINT32_BE(n,b,i) \ | |
{ \ | |
(n) = ( (uint32_t) (b)[(i) ] << 24 ) \ | |
| ( (uint32_t) (b)[(i) + 1] << 16 ) \ | |
| ( (uint32_t) (b)[(i) + 2] << 8 ) \ | |
| ( (uint32_t) (b)[(i) + 3] ); \ | |
} | |
#endif | |
#ifndef PUT_UINT32_BE | |
#define PUT_UINT32_BE(n,b,i) \ | |
{ \ | |
(b)[(i) ] = (unsigned char) ( (n) >> 24 ); \ | |
(b)[(i) + 1] = (unsigned char) ( (n) >> 16 ); \ | |
(b)[(i) + 2] = (unsigned char) ( (n) >> 8 ); \ | |
(b)[(i) + 3] = (unsigned char) ( (n) ); \ | |
} | |
#endif | |
/* | |
* Expanded DES S-boxes | |
*/ | |
static const uint32_t SB1[64] = | |
{ | |
0x01010400, 0x00000000, 0x00010000, 0x01010404, | |
0x01010004, 0x00010404, 0x00000004, 0x00010000, | |
0x00000400, 0x01010400, 0x01010404, 0x00000400, | |
0x01000404, 0x01010004, 0x01000000, 0x00000004, | |
0x00000404, 0x01000400, 0x01000400, 0x00010400, | |
0x00010400, 0x01010000, 0x01010000, 0x01000404, | |
0x00010004, 0x01000004, 0x01000004, 0x00010004, | |
0x00000000, 0x00000404, 0x00010404, 0x01000000, | |
0x00010000, 0x01010404, 0x00000004, 0x01010000, | |
0x01010400, 0x01000000, 0x01000000, 0x00000400, | |
0x01010004, 0x00010000, 0x00010400, 0x01000004, | |
0x00000400, 0x00000004, 0x01000404, 0x00010404, | |
0x01010404, 0x00010004, 0x01010000, 0x01000404, | |
0x01000004, 0x00000404, 0x00010404, 0x01010400, | |
0x00000404, 0x01000400, 0x01000400, 0x00000000, | |
0x00010004, 0x00010400, 0x00000000, 0x01010004 | |
}; | |
static const uint32_t SB2[64] = | |
{ | |
0x80108020, 0x80008000, 0x00008000, 0x00108020, | |
0x00100000, 0x00000020, 0x80100020, 0x80008020, | |
0x80000020, 0x80108020, 0x80108000, 0x80000000, | |
0x80008000, 0x00100000, 0x00000020, 0x80100020, | |
0x00108000, 0x00100020, 0x80008020, 0x00000000, | |
0x80000000, 0x00008000, 0x00108020, 0x80100000, | |
0x00100020, 0x80000020, 0x00000000, 0x00108000, | |
0x00008020, 0x80108000, 0x80100000, 0x00008020, | |
0x00000000, 0x00108020, 0x80100020, 0x00100000, | |
0x80008020, 0x80100000, 0x80108000, 0x00008000, | |
0x80100000, 0x80008000, 0x00000020, 0x80108020, | |
0x00108020, 0x00000020, 0x00008000, 0x80000000, | |
0x00008020, 0x80108000, 0x00100000, 0x80000020, | |
0x00100020, 0x80008020, 0x80000020, 0x00100020, | |
0x00108000, 0x00000000, 0x80008000, 0x00008020, | |
0x80000000, 0x80100020, 0x80108020, 0x00108000 | |
}; | |
static const uint32_t SB3[64] = | |
{ | |
0x00000208, 0x08020200, 0x00000000, 0x08020008, | |
0x08000200, 0x00000000, 0x00020208, 0x08000200, | |
0x00020008, 0x08000008, 0x08000008, 0x00020000, | |
0x08020208, 0x00020008, 0x08020000, 0x00000208, | |
0x08000000, 0x00000008, 0x08020200, 0x00000200, | |
0x00020200, 0x08020000, 0x08020008, 0x00020208, | |
0x08000208, 0x00020200, 0x00020000, 0x08000208, | |
0x00000008, 0x08020208, 0x00000200, 0x08000000, | |
0x08020200, 0x08000000, 0x00020008, 0x00000208, | |
0x00020000, 0x08020200, 0x08000200, 0x00000000, | |
0x00000200, 0x00020008, 0x08020208, 0x08000200, | |
0x08000008, 0x00000200, 0x00000000, 0x08020008, | |
0x08000208, 0x00020000, 0x08000000, 0x08020208, | |
0x00000008, 0x00020208, 0x00020200, 0x08000008, | |
0x08020000, 0x08000208, 0x00000208, 0x08020000, | |
0x00020208, 0x00000008, 0x08020008, 0x00020200 | |
}; | |
static const uint32_t SB4[64] = | |
{ | |
0x00802001, 0x00002081, 0x00002081, 0x00000080, | |
0x00802080, 0x00800081, 0x00800001, 0x00002001, | |
0x00000000, 0x00802000, 0x00802000, 0x00802081, | |
0x00000081, 0x00000000, 0x00800080, 0x00800001, | |
0x00000001, 0x00002000, 0x00800000, 0x00802001, | |
0x00000080, 0x00800000, 0x00002001, 0x00002080, | |
0x00800081, 0x00000001, 0x00002080, 0x00800080, | |
0x00002000, 0x00802080, 0x00802081, 0x00000081, | |
0x00800080, 0x00800001, 0x00802000, 0x00802081, | |
0x00000081, 0x00000000, 0x00000000, 0x00802000, | |
0x00002080, 0x00800080, 0x00800081, 0x00000001, | |
0x00802001, 0x00002081, 0x00002081, 0x00000080, | |
0x00802081, 0x00000081, 0x00000001, 0x00002000, | |
0x00800001, 0x00002001, 0x00802080, 0x00800081, | |
0x00002001, 0x00002080, 0x00800000, 0x00802001, | |
0x00000080, 0x00800000, 0x00002000, 0x00802080 | |
}; | |
static const uint32_t SB5[64] = | |
{ | |
0x00000100, 0x02080100, 0x02080000, 0x42000100, | |
0x00080000, 0x00000100, 0x40000000, 0x02080000, | |
0x40080100, 0x00080000, 0x02000100, 0x40080100, | |
0x42000100, 0x42080000, 0x00080100, 0x40000000, | |
0x02000000, 0x40080000, 0x40080000, 0x00000000, | |
0x40000100, 0x42080100, 0x42080100, 0x02000100, | |
0x42080000, 0x40000100, 0x00000000, 0x42000000, | |
0x02080100, 0x02000000, 0x42000000, 0x00080100, | |
0x00080000, 0x42000100, 0x00000100, 0x02000000, | |
0x40000000, 0x02080000, 0x42000100, 0x40080100, | |
0x02000100, 0x40000000, 0x42080000, 0x02080100, | |
0x40080100, 0x00000100, 0x02000000, 0x42080000, | |
0x42080100, 0x00080100, 0x42000000, 0x42080100, | |
0x02080000, 0x00000000, 0x40080000, 0x42000000, | |
0x00080100, 0x02000100, 0x40000100, 0x00080000, | |
0x00000000, 0x40080000, 0x02080100, 0x40000100 | |
}; | |
static const uint32_t SB6[64] = | |
{ | |
0x20000010, 0x20400000, 0x00004000, 0x20404010, | |
0x20400000, 0x00000010, 0x20404010, 0x00400000, | |
0x20004000, 0x00404010, 0x00400000, 0x20000010, | |
0x00400010, 0x20004000, 0x20000000, 0x00004010, | |
0x00000000, 0x00400010, 0x20004010, 0x00004000, | |
0x00404000, 0x20004010, 0x00000010, 0x20400010, | |
0x20400010, 0x00000000, 0x00404010, 0x20404000, | |
0x00004010, 0x00404000, 0x20404000, 0x20000000, | |
0x20004000, 0x00000010, 0x20400010, 0x00404000, | |
0x20404010, 0x00400000, 0x00004010, 0x20000010, | |
0x00400000, 0x20004000, 0x20000000, 0x00004010, | |
0x20000010, 0x20404010, 0x00404000, 0x20400000, | |
0x00404010, 0x20404000, 0x00000000, 0x20400010, | |
0x00000010, 0x00004000, 0x20400000, 0x00404010, | |
0x00004000, 0x00400010, 0x20004010, 0x00000000, | |
0x20404000, 0x20000000, 0x00400010, 0x20004010 | |
}; | |
static const uint32_t SB7[64] = | |
{ | |
0x00200000, 0x04200002, 0x04000802, 0x00000000, | |
0x00000800, 0x04000802, 0x00200802, 0x04200800, | |
0x04200802, 0x00200000, 0x00000000, 0x04000002, | |
0x00000002, 0x04000000, 0x04200002, 0x00000802, | |
0x04000800, 0x00200802, 0x00200002, 0x04000800, | |
0x04000002, 0x04200000, 0x04200800, 0x00200002, | |
0x04200000, 0x00000800, 0x00000802, 0x04200802, | |
0x00200800, 0x00000002, 0x04000000, 0x00200800, | |
0x04000000, 0x00200800, 0x00200000, 0x04000802, | |
0x04000802, 0x04200002, 0x04200002, 0x00000002, | |
0x00200002, 0x04000000, 0x04000800, 0x00200000, | |
0x04200800, 0x00000802, 0x00200802, 0x04200800, | |
0x00000802, 0x04000002, 0x04200802, 0x04200000, | |
0x00200800, 0x00000000, 0x00000002, 0x04200802, | |
0x00000000, 0x00200802, 0x04200000, 0x00000800, | |
0x04000002, 0x04000800, 0x00000800, 0x00200002 | |
}; | |
static const uint32_t SB8[64] = | |
{ | |
0x10001040, 0x00001000, 0x00040000, 0x10041040, | |
0x10000000, 0x10001040, 0x00000040, 0x10000000, | |
0x00040040, 0x10040000, 0x10041040, 0x00041000, | |
0x10041000, 0x00041040, 0x00001000, 0x00000040, | |
0x10040000, 0x10000040, 0x10001000, 0x00001040, | |
0x00041000, 0x00040040, 0x10040040, 0x10041000, | |
0x00001040, 0x00000000, 0x00000000, 0x10040040, | |
0x10000040, 0x10001000, 0x00041040, 0x00040000, | |
0x00041040, 0x00040000, 0x10041000, 0x00001000, | |
0x00000040, 0x10040040, 0x00001000, 0x00041040, | |
0x10001000, 0x00000040, 0x10000040, 0x10040000, | |
0x10040040, 0x10000000, 0x00040000, 0x10001040, | |
0x00000000, 0x10041040, 0x00040040, 0x10000040, | |
0x10040000, 0x10001000, 0x10001040, 0x00000000, | |
0x10041040, 0x00041000, 0x00041000, 0x00001040, | |
0x00001040, 0x00040040, 0x10000000, 0x10041000 | |
}; | |
/* | |
* PC1: left and right halves bit-swap | |
*/ | |
static const uint32_t LHs[16] = | |
{ | |
0x00000000, 0x00000001, 0x00000100, 0x00000101, | |
0x00010000, 0x00010001, 0x00010100, 0x00010101, | |
0x01000000, 0x01000001, 0x01000100, 0x01000101, | |
0x01010000, 0x01010001, 0x01010100, 0x01010101 | |
}; | |
static const uint32_t RHs[16] = | |
{ | |
0x00000000, 0x01000000, 0x00010000, 0x01010000, | |
0x00000100, 0x01000100, 0x00010100, 0x01010100, | |
0x00000001, 0x01000001, 0x00010001, 0x01010001, | |
0x00000101, 0x01000101, 0x00010101, 0x01010101, | |
}; | |
/* | |
* Initial Permutation macro | |
*/ | |
#define DES_IP(X,Y) \ | |
do \ | |
{ \ | |
T = (((X) >> 4) ^ (Y)) & 0x0F0F0F0F; (Y) ^= T; (X) ^= (T << 4); \ | |
T = (((X) >> 16) ^ (Y)) & 0x0000FFFF; (Y) ^= T; (X) ^= (T << 16); \ | |
T = (((Y) >> 2) ^ (X)) & 0x33333333; (X) ^= T; (Y) ^= (T << 2); \ | |
T = (((Y) >> 8) ^ (X)) & 0x00FF00FF; (X) ^= T; (Y) ^= (T << 8); \ | |
(Y) = (((Y) << 1) | ((Y) >> 31)) & 0xFFFFFFFF; \ | |
T = ((X) ^ (Y)) & 0xAAAAAAAA; (Y) ^= T; (X) ^= T; \ | |
(X) = (((X) << 1) | ((X) >> 31)) & 0xFFFFFFFF; \ | |
} while( 0 ) | |
/* | |
* Final Permutation macro | |
*/ | |
#define DES_FP(X,Y) \ | |
do \ | |
{ \ | |
(X) = (((X) << 31) | ((X) >> 1)) & 0xFFFFFFFF; \ | |
T = ((X) ^ (Y)) & 0xAAAAAAAA; (X) ^= T; (Y) ^= T; \ | |
(Y) = (((Y) << 31) | ((Y) >> 1)) & 0xFFFFFFFF; \ | |
T = (((Y) >> 8) ^ (X)) & 0x00FF00FF; (X) ^= T; (Y) ^= (T << 8); \ | |
T = (((Y) >> 2) ^ (X)) & 0x33333333; (X) ^= T; (Y) ^= (T << 2); \ | |
T = (((X) >> 16) ^ (Y)) & 0x0000FFFF; (Y) ^= T; (X) ^= (T << 16); \ | |
T = (((X) >> 4) ^ (Y)) & 0x0F0F0F0F; (Y) ^= T; (X) ^= (T << 4); \ | |
} while( 0 ) | |
/* | |
* DES round macro | |
*/ | |
#define DES_ROUND(X,Y) \ | |
do \ | |
{ \ | |
T = *SK++ ^ (X); \ | |
(Y) ^= SB8[ (T ) & 0x3F ] ^ \ | |
SB6[ (T >> 8) & 0x3F ] ^ \ | |
SB4[ (T >> 16) & 0x3F ] ^ \ | |
SB2[ (T >> 24) & 0x3F ]; \ | |
\ | |
T = *SK++ ^ (((X) << 28) | ((X) >> 4)); \ | |
(Y) ^= SB7[ (T ) & 0x3F ] ^ \ | |
SB5[ (T >> 8) & 0x3F ] ^ \ | |
SB3[ (T >> 16) & 0x3F ] ^ \ | |
SB1[ (T >> 24) & 0x3F ]; \ | |
} while( 0 ) | |
#define SWAP(a,b) \ | |
do \ | |
{ \ | |
uint32_t t = (a); (a) = (b); (b) = t; t = 0; \ | |
} while( 0 ) | |
void mbedtls_des_init( mbedtls_des_context *ctx ) | |
{ | |
memset( ctx, 0, sizeof( mbedtls_des_context ) ); | |
} | |
void mbedtls_des_free( mbedtls_des_context *ctx ) | |
{ | |
if( ctx == NULL ) | |
return; | |
mbedtls_platform_zeroize( ctx, sizeof( mbedtls_des_context ) ); | |
} | |
void mbedtls_des3_init( mbedtls_des3_context *ctx ) | |
{ | |
memset( ctx, 0, sizeof( mbedtls_des3_context ) ); | |
} | |
void mbedtls_des3_free( mbedtls_des3_context *ctx ) | |
{ | |
if( ctx == NULL ) | |
return; | |
mbedtls_platform_zeroize( ctx, sizeof( mbedtls_des3_context ) ); | |
} | |
static const unsigned char odd_parity_table[128] = { 1, 2, 4, 7, 8, | |
11, 13, 14, 16, 19, 21, 22, 25, 26, 28, 31, 32, 35, 37, 38, 41, 42, 44, | |
47, 49, 50, 52, 55, 56, 59, 61, 62, 64, 67, 69, 70, 73, 74, 76, 79, 81, | |
82, 84, 87, 88, 91, 93, 94, 97, 98, 100, 103, 104, 107, 109, 110, 112, | |
115, 117, 118, 121, 122, 124, 127, 128, 131, 133, 134, 137, 138, 140, | |
143, 145, 146, 148, 151, 152, 155, 157, 158, 161, 162, 164, 167, 168, | |
171, 173, 174, 176, 179, 181, 182, 185, 186, 188, 191, 193, 194, 196, | |
199, 200, 203, 205, 206, 208, 211, 213, 214, 217, 218, 220, 223, 224, | |
227, 229, 230, 233, 234, 236, 239, 241, 242, 244, 247, 248, 251, 253, | |
254 }; | |
void mbedtls_des_key_set_parity( unsigned char key[MBEDTLS_DES_KEY_SIZE] ) | |
{ | |
int i; | |
for( i = 0; i < MBEDTLS_DES_KEY_SIZE; i++ ) | |
key[i] = odd_parity_table[key[i] / 2]; | |
} | |
/* | |
* Check the given key's parity, returns 1 on failure, 0 on SUCCESS | |
*/ | |
int mbedtls_des_key_check_key_parity( const unsigned char key[MBEDTLS_DES_KEY_SIZE] ) | |
{ | |
int i; | |
for( i = 0; i < MBEDTLS_DES_KEY_SIZE; i++ ) | |
if( key[i] != odd_parity_table[key[i] / 2] ) | |
return( 1 ); | |
return( 0 ); | |
} | |
/* | |
* Table of weak and semi-weak keys | |
* | |
* Source: http://en.wikipedia.org/wiki/Weak_key | |
* | |
* Weak: | |
* Alternating ones + zeros (0x0101010101010101) | |
* Alternating 'F' + 'E' (0xFEFEFEFEFEFEFEFE) | |
* '0xE0E0E0E0F1F1F1F1' | |
* '0x1F1F1F1F0E0E0E0E' | |
* | |
* Semi-weak: | |
* 0x011F011F010E010E and 0x1F011F010E010E01 | |
* 0x01E001E001F101F1 and 0xE001E001F101F101 | |
* 0x01FE01FE01FE01FE and 0xFE01FE01FE01FE01 | |
* 0x1FE01FE00EF10EF1 and 0xE01FE01FF10EF10E | |
* 0x1FFE1FFE0EFE0EFE and 0xFE1FFE1FFE0EFE0E | |
* 0xE0FEE0FEF1FEF1FE and 0xFEE0FEE0FEF1FEF1 | |
* | |
*/ | |
#define WEAK_KEY_COUNT 16 | |
static const unsigned char weak_key_table[WEAK_KEY_COUNT][MBEDTLS_DES_KEY_SIZE] = | |
{ | |
{ 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01 }, | |
{ 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE }, | |
{ 0x1F, 0x1F, 0x1F, 0x1F, 0x0E, 0x0E, 0x0E, 0x0E }, | |
{ 0xE0, 0xE0, 0xE0, 0xE0, 0xF1, 0xF1, 0xF1, 0xF1 }, | |
{ 0x01, 0x1F, 0x01, 0x1F, 0x01, 0x0E, 0x01, 0x0E }, | |
{ 0x1F, 0x01, 0x1F, 0x01, 0x0E, 0x01, 0x0E, 0x01 }, | |
{ 0x01, 0xE0, 0x01, 0xE0, 0x01, 0xF1, 0x01, 0xF1 }, | |
{ 0xE0, 0x01, 0xE0, 0x01, 0xF1, 0x01, 0xF1, 0x01 }, | |
{ 0x01, 0xFE, 0x01, 0xFE, 0x01, 0xFE, 0x01, 0xFE }, | |
{ 0xFE, 0x01, 0xFE, 0x01, 0xFE, 0x01, 0xFE, 0x01 }, | |
{ 0x1F, 0xE0, 0x1F, 0xE0, 0x0E, 0xF1, 0x0E, 0xF1 }, | |
{ 0xE0, 0x1F, 0xE0, 0x1F, 0xF1, 0x0E, 0xF1, 0x0E }, | |
{ 0x1F, 0xFE, 0x1F, 0xFE, 0x0E, 0xFE, 0x0E, 0xFE }, | |
{ 0xFE, 0x1F, 0xFE, 0x1F, 0xFE, 0x0E, 0xFE, 0x0E }, | |
{ 0xE0, 0xFE, 0xE0, 0xFE, 0xF1, 0xFE, 0xF1, 0xFE }, | |
{ 0xFE, 0xE0, 0xFE, 0xE0, 0xFE, 0xF1, 0xFE, 0xF1 } | |
}; | |
int mbedtls_des_key_check_weak( const unsigned char key[MBEDTLS_DES_KEY_SIZE] ) | |
{ | |
int i; | |
for( i = 0; i < WEAK_KEY_COUNT; i++ ) | |
if( memcmp( weak_key_table[i], key, MBEDTLS_DES_KEY_SIZE) == 0 ) | |
return( 1 ); | |
return( 0 ); | |
} | |
#if !defined(MBEDTLS_DES_SETKEY_ALT) | |
void mbedtls_des_setkey( uint32_t SK[32], const unsigned char key[MBEDTLS_DES_KEY_SIZE] ) | |
{ | |
int i; | |
uint32_t X, Y, T; | |
GET_UINT32_BE( X, key, 0 ); | |
GET_UINT32_BE( Y, key, 4 ); | |
/* | |
* Permuted Choice 1 | |
*/ | |
T = ((Y >> 4) ^ X) & 0x0F0F0F0F; X ^= T; Y ^= (T << 4); | |
T = ((Y ) ^ X) & 0x10101010; X ^= T; Y ^= (T ); | |
X = (LHs[ (X ) & 0xF] << 3) | (LHs[ (X >> 8) & 0xF ] << 2) | |
| (LHs[ (X >> 16) & 0xF] << 1) | (LHs[ (X >> 24) & 0xF ] ) | |
| (LHs[ (X >> 5) & 0xF] << 7) | (LHs[ (X >> 13) & 0xF ] << 6) | |
| (LHs[ (X >> 21) & 0xF] << 5) | (LHs[ (X >> 29) & 0xF ] << 4); | |
Y = (RHs[ (Y >> 1) & 0xF] << 3) | (RHs[ (Y >> 9) & 0xF ] << 2) | |
| (RHs[ (Y >> 17) & 0xF] << 1) | (RHs[ (Y >> 25) & 0xF ] ) | |
| (RHs[ (Y >> 4) & 0xF] << 7) | (RHs[ (Y >> 12) & 0xF ] << 6) | |
| (RHs[ (Y >> 20) & 0xF] << 5) | (RHs[ (Y >> 28) & 0xF ] << 4); | |
X &= 0x0FFFFFFF; | |
Y &= 0x0FFFFFFF; | |
/* | |
* calculate subkeys | |
*/ | |
for( i = 0; i < 16; i++ ) | |
{ | |
if( i < 2 || i == 8 || i == 15 ) | |
{ | |
X = ((X << 1) | (X >> 27)) & 0x0FFFFFFF; | |
Y = ((Y << 1) | (Y >> 27)) & 0x0FFFFFFF; | |
} | |
else | |
{ | |
X = ((X << 2) | (X >> 26)) & 0x0FFFFFFF; | |
Y = ((Y << 2) | (Y >> 26)) & 0x0FFFFFFF; | |
} | |
*SK++ = ((X << 4) & 0x24000000) | ((X << 28) & 0x10000000) | |
| ((X << 14) & 0x08000000) | ((X << 18) & 0x02080000) | |
| ((X << 6) & 0x01000000) | ((X << 9) & 0x00200000) | |
| ((X >> 1) & 0x00100000) | ((X << 10) & 0x00040000) | |
| ((X << 2) & 0x00020000) | ((X >> 10) & 0x00010000) | |
| ((Y >> 13) & 0x00002000) | ((Y >> 4) & 0x00001000) | |
| ((Y << 6) & 0x00000800) | ((Y >> 1) & 0x00000400) | |
| ((Y >> 14) & 0x00000200) | ((Y ) & 0x00000100) | |
| ((Y >> 5) & 0x00000020) | ((Y >> 10) & 0x00000010) | |
| ((Y >> 3) & 0x00000008) | ((Y >> 18) & 0x00000004) | |
| ((Y >> 26) & 0x00000002) | ((Y >> 24) & 0x00000001); | |
*SK++ = ((X << 15) & 0x20000000) | ((X << 17) & 0x10000000) | |
| ((X << 10) & 0x08000000) | ((X << 22) & 0x04000000) | |
| ((X >> 2) & 0x02000000) | ((X << 1) & 0x01000000) | |
| ((X << 16) & 0x00200000) | ((X << 11) & 0x00100000) | |
| ((X << 3) & 0x00080000) | ((X >> 6) & 0x00040000) | |
| ((X << 15) & 0x00020000) | ((X >> 4) & 0x00010000) | |
| ((Y >> 2) & 0x00002000) | ((Y << 8) & 0x00001000) | |
| ((Y >> 14) & 0x00000808) | ((Y >> 9) & 0x00000400) | |
| ((Y ) & 0x00000200) | ((Y << 7) & 0x00000100) | |
| ((Y >> 7) & 0x00000020) | ((Y >> 3) & 0x00000011) | |
| ((Y << 2) & 0x00000004) | ((Y >> 21) & 0x00000002); | |
} | |
} | |
#endif /* !MBEDTLS_DES_SETKEY_ALT */ | |
/* | |
* DES key schedule (56-bit, encryption) | |
*/ | |
int mbedtls_des_setkey_enc( mbedtls_des_context *ctx, const unsigned char key[MBEDTLS_DES_KEY_SIZE] ) | |
{ | |
mbedtls_des_setkey( ctx->sk, key ); | |
return( 0 ); | |
} | |
/* | |
* DES key schedule (56-bit, decryption) | |
*/ | |
int mbedtls_des_setkey_dec( mbedtls_des_context *ctx, const unsigned char key[MBEDTLS_DES_KEY_SIZE] ) | |
{ | |
int i; | |
mbedtls_des_setkey( ctx->sk, key ); | |
for( i = 0; i < 16; i += 2 ) | |
{ | |
SWAP( ctx->sk[i ], ctx->sk[30 - i] ); | |
SWAP( ctx->sk[i + 1], ctx->sk[31 - i] ); | |
} | |
return( 0 ); | |
} | |
static void des3_set2key( uint32_t esk[96], | |
uint32_t dsk[96], | |
const unsigned char key[MBEDTLS_DES_KEY_SIZE*2] ) | |
{ | |
int i; | |
mbedtls_des_setkey( esk, key ); | |
mbedtls_des_setkey( dsk + 32, key + 8 ); | |
for( i = 0; i < 32; i += 2 ) | |
{ | |
dsk[i ] = esk[30 - i]; | |
dsk[i + 1] = esk[31 - i]; | |
esk[i + 32] = dsk[62 - i]; | |
esk[i + 33] = dsk[63 - i]; | |
esk[i + 64] = esk[i ]; | |
esk[i + 65] = esk[i + 1]; | |
dsk[i + 64] = dsk[i ]; | |
dsk[i + 65] = dsk[i + 1]; | |
} | |
} | |
/* | |
* Triple-DES key schedule (112-bit, encryption) | |
*/ | |
int mbedtls_des3_set2key_enc( mbedtls_des3_context *ctx, | |
const unsigned char key[MBEDTLS_DES_KEY_SIZE * 2] ) | |
{ | |
uint32_t sk[96]; | |
des3_set2key( ctx->sk, sk, key ); | |
mbedtls_platform_zeroize( sk, sizeof( sk ) ); | |
return( 0 ); | |
} | |
/* | |
* Triple-DES key schedule (112-bit, decryption) | |
*/ | |
int mbedtls_des3_set2key_dec( mbedtls_des3_context *ctx, | |
const unsigned char key[MBEDTLS_DES_KEY_SIZE * 2] ) | |
{ | |
uint32_t sk[96]; | |
des3_set2key( sk, ctx->sk, key ); | |
mbedtls_platform_zeroize( sk, sizeof( sk ) ); | |
return( 0 ); | |
} | |
static void des3_set3key( uint32_t esk[96], | |
uint32_t dsk[96], | |
const unsigned char key[24] ) | |
{ | |
int i; | |
mbedtls_des_setkey( esk, key ); | |
mbedtls_des_setkey( dsk + 32, key + 8 ); | |
mbedtls_des_setkey( esk + 64, key + 16 ); | |
for( i = 0; i < 32; i += 2 ) | |
{ | |
dsk[i ] = esk[94 - i]; | |
dsk[i + 1] = esk[95 - i]; | |
esk[i + 32] = dsk[62 - i]; | |
esk[i + 33] = dsk[63 - i]; | |
dsk[i + 64] = esk[30 - i]; | |
dsk[i + 65] = esk[31 - i]; | |
} | |
} | |
/* | |
* Triple-DES key schedule (168-bit, encryption) | |
*/ | |
int mbedtls_des3_set3key_enc( mbedtls_des3_context *ctx, | |
const unsigned char key[MBEDTLS_DES_KEY_SIZE * 3] ) | |
{ | |
uint32_t sk[96]; | |
des3_set3key( ctx->sk, sk, key ); | |
mbedtls_platform_zeroize( sk, sizeof( sk ) ); | |
return( 0 ); | |
} | |
/* | |
* Triple-DES key schedule (168-bit, decryption) | |
*/ | |
int mbedtls_des3_set3key_dec( mbedtls_des3_context *ctx, | |
const unsigned char key[MBEDTLS_DES_KEY_SIZE * 3] ) | |
{ | |
uint32_t sk[96]; | |
des3_set3key( sk, ctx->sk, key ); | |
mbedtls_platform_zeroize( sk, sizeof( sk ) ); | |
return( 0 ); | |
} | |
/* | |
* DES-ECB block encryption/decryption | |
*/ | |
#if !defined(MBEDTLS_DES_CRYPT_ECB_ALT) | |
int mbedtls_des_crypt_ecb( mbedtls_des_context *ctx, | |
const unsigned char input[8], | |
unsigned char output[8] ) | |
{ | |
int i; | |
uint32_t X, Y, T, *SK; | |
SK = ctx->sk; | |
GET_UINT32_BE( X, input, 0 ); | |
GET_UINT32_BE( Y, input, 4 ); | |
DES_IP( X, Y ); | |
for( i = 0; i < 8; i++ ) | |
{ | |
DES_ROUND( Y, X ); | |
DES_ROUND( X, Y ); | |
} | |
DES_FP( Y, X ); | |
PUT_UINT32_BE( Y, output, 0 ); | |
PUT_UINT32_BE( X, output, 4 ); | |
return( 0 ); | |
} | |
#endif /* !MBEDTLS_DES_CRYPT_ECB_ALT */ | |
#if defined(MBEDTLS_CIPHER_MODE_CBC) | |
/* | |
* DES-CBC buffer encryption/decryption | |
*/ | |
int mbedtls_des_crypt_cbc( mbedtls_des_context *ctx, | |
int mode, | |
size_t length, | |
unsigned char iv[8], | |
const unsigned char *input, | |
unsigned char *output ) | |
{ | |
int i; | |
unsigned char temp[8]; | |
if( length % 8 ) | |
return( MBEDTLS_ERR_DES_INVALID_INPUT_LENGTH ); | |
if( mode == MBEDTLS_DES_ENCRYPT ) | |
{ | |
while( length > 0 ) | |
{ | |
for( i = 0; i < 8; i++ ) | |
output[i] = (unsigned char)( input[i] ^ iv[i] ); | |
mbedtls_des_crypt_ecb( ctx, output, output ); | |
memcpy( iv, output, 8 ); | |
input += 8; | |
output += 8; | |
length -= 8; | |
} | |
} | |
else /* MBEDTLS_DES_DECRYPT */ | |
{ | |
while( length > 0 ) | |
{ | |
memcpy( temp, input, 8 ); | |
mbedtls_des_crypt_ecb( ctx, input, output ); | |
for( i = 0; i < 8; i++ ) | |
output[i] = (unsigned char)( output[i] ^ iv[i] ); | |
memcpy( iv, temp, 8 ); | |
input += 8; | |
output += 8; | |
length -= 8; | |
} | |
} | |
return( 0 ); | |
} | |
#endif /* MBEDTLS_CIPHER_MODE_CBC */ | |
/* | |
* 3DES-ECB block encryption/decryption | |
*/ | |
#if !defined(MBEDTLS_DES3_CRYPT_ECB_ALT) | |
int mbedtls_des3_crypt_ecb( mbedtls_des3_context *ctx, | |
const unsigned char input[8], | |
unsigned char output[8] ) | |
{ | |
int i; | |
uint32_t X, Y, T, *SK; | |
SK = ctx->sk; | |
GET_UINT32_BE( X, input, 0 ); | |
GET_UINT32_BE( Y, input, 4 ); | |
DES_IP( X, Y ); | |
for( i = 0; i < 8; i++ ) | |
{ | |
DES_ROUND( Y, X ); | |
DES_ROUND( X, Y ); | |
} | |
for( i = 0; i < 8; i++ ) | |
{ | |
DES_ROUND( X, Y ); | |
DES_ROUND( Y, X ); | |
} | |
for( i = 0; i < 8; i++ ) | |
{ | |
DES_ROUND( Y, X ); | |
DES_ROUND( X, Y ); | |
} | |
DES_FP( Y, X ); | |
PUT_UINT32_BE( Y, output, 0 ); | |
PUT_UINT32_BE( X, output, 4 ); | |
return( 0 ); | |
} | |
#endif /* !MBEDTLS_DES3_CRYPT_ECB_ALT */ | |
#if defined(MBEDTLS_CIPHER_MODE_CBC) | |
/* | |
* 3DES-CBC buffer encryption/decryption | |
*/ | |
int mbedtls_des3_crypt_cbc( mbedtls_des3_context *ctx, | |
int mode, | |
size_t length, | |
unsigned char iv[8], | |
const unsigned char *input, | |
unsigned char *output ) | |
{ | |
int i; | |
unsigned char temp[8]; | |
if( length % 8 ) | |
return( MBEDTLS_ERR_DES_INVALID_INPUT_LENGTH ); | |
if( mode == MBEDTLS_DES_ENCRYPT ) | |
{ | |
while( length > 0 ) | |
{ | |
for( i = 0; i < 8; i++ ) | |
output[i] = (unsigned char)( input[i] ^ iv[i] ); | |
mbedtls_des3_crypt_ecb( ctx, output, output ); | |
memcpy( iv, output, 8 ); | |
input += 8; | |
output += 8; | |
length -= 8; | |
} | |
} | |
else /* MBEDTLS_DES_DECRYPT */ | |
{ | |
while( length > 0 ) | |
{ | |
memcpy( temp, input, 8 ); | |
mbedtls_des3_crypt_ecb( ctx, input, output ); | |
for( i = 0; i < 8; i++ ) | |
output[i] = (unsigned char)( output[i] ^ iv[i] ); | |
memcpy( iv, temp, 8 ); | |
input += 8; | |
output += 8; | |
length -= 8; | |
} | |
} | |
return( 0 ); | |
} | |
#endif /* MBEDTLS_CIPHER_MODE_CBC */ | |
#endif /* !MBEDTLS_DES_ALT */ | |
#if defined(MBEDTLS_SELF_TEST) | |
/* | |
* DES and 3DES test vectors from: | |
* | |
* http://csrc.nist.gov/groups/STM/cavp/documents/des/tripledes-vectors.zip | |
*/ | |
static const unsigned char des3_test_keys[24] = | |
{ | |
0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF, | |
0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF, 0x01, | |
0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF, 0x01, 0x23 | |
}; | |
static const unsigned char des3_test_buf[8] = | |
{ | |
0x4E, 0x6F, 0x77, 0x20, 0x69, 0x73, 0x20, 0x74 | |
}; | |
static const unsigned char des3_test_ecb_dec[3][8] = | |
{ | |
{ 0xCD, 0xD6, 0x4F, 0x2F, 0x94, 0x27, 0xC1, 0x5D }, | |
{ 0x69, 0x96, 0xC8, 0xFA, 0x47, 0xA2, 0xAB, 0xEB }, | |
{ 0x83, 0x25, 0x39, 0x76, 0x44, 0x09, 0x1A, 0x0A } | |
}; | |
static const unsigned char des3_test_ecb_enc[3][8] = | |
{ | |
{ 0x6A, 0x2A, 0x19, 0xF4, 0x1E, 0xCA, 0x85, 0x4B }, | |
{ 0x03, 0xE6, 0x9F, 0x5B, 0xFA, 0x58, 0xEB, 0x42 }, | |
{ 0xDD, 0x17, 0xE8, 0xB8, 0xB4, 0x37, 0xD2, 0x32 } | |
}; | |
#if defined(MBEDTLS_CIPHER_MODE_CBC) | |
static const unsigned char des3_test_iv[8] = | |
{ | |
0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF, | |
}; | |
static const unsigned char des3_test_cbc_dec[3][8] = | |
{ | |
{ 0x12, 0x9F, 0x40, 0xB9, 0xD2, 0x00, 0x56, 0xB3 }, | |
{ 0x47, 0x0E, 0xFC, 0x9A, 0x6B, 0x8E, 0xE3, 0x93 }, | |
{ 0xC5, 0xCE, 0xCF, 0x63, 0xEC, 0xEC, 0x51, 0x4C } | |
}; | |
static const unsigned char des3_test_cbc_enc[3][8] = | |
{ | |
{ 0x54, 0xF1, 0x5A, 0xF6, 0xEB, 0xE3, 0xA4, 0xB4 }, | |
{ 0x35, 0x76, 0x11, 0x56, 0x5F, 0xA1, 0x8E, 0x4D }, | |
{ 0xCB, 0x19, 0x1F, 0x85, 0xD1, 0xED, 0x84, 0x39 } | |
}; | |
#endif /* MBEDTLS_CIPHER_MODE_CBC */ | |
/* | |
* Checkup routine | |
*/ | |
int mbedtls_des_self_test( int verbose ) | |
{ | |
int i, j, u, v, ret = 0; | |
mbedtls_des_context ctx; | |
mbedtls_des3_context ctx3; | |
unsigned char buf[8]; | |
#if defined(MBEDTLS_CIPHER_MODE_CBC) | |
unsigned char prv[8]; | |
unsigned char iv[8]; | |
#endif | |
mbedtls_des_init( &ctx ); | |
mbedtls_des3_init( &ctx3 ); | |
/* | |
* ECB mode | |
*/ | |
for( i = 0; i < 6; i++ ) | |
{ | |
u = i >> 1; | |
v = i & 1; | |
if( verbose != 0 ) | |
mbedtls_printf( " DES%c-ECB-%3d (%s): ", | |
( u == 0 ) ? ' ' : '3', 56 + u * 56, | |
( v == MBEDTLS_DES_DECRYPT ) ? "dec" : "enc" ); | |
memcpy( buf, des3_test_buf, 8 ); | |
switch( i ) | |
{ | |
case 0: | |
mbedtls_des_setkey_dec( &ctx, des3_test_keys ); | |
break; | |
case 1: | |
mbedtls_des_setkey_enc( &ctx, des3_test_keys ); | |
break; | |
case 2: | |
mbedtls_des3_set2key_dec( &ctx3, des3_test_keys ); | |
break; | |
case 3: | |
mbedtls_des3_set2key_enc( &ctx3, des3_test_keys ); | |
break; | |
case 4: | |
mbedtls_des3_set3key_dec( &ctx3, des3_test_keys ); | |
break; | |
case 5: | |
mbedtls_des3_set3key_enc( &ctx3, des3_test_keys ); | |
break; | |
default: | |
return( 1 ); | |
} | |
for( j = 0; j < 10000; j++ ) | |
{ | |
if( u == 0 ) | |
mbedtls_des_crypt_ecb( &ctx, buf, buf ); | |
else | |
mbedtls_des3_crypt_ecb( &ctx3, buf, buf ); | |
} | |
if( ( v == MBEDTLS_DES_DECRYPT && | |
memcmp( buf, des3_test_ecb_dec[u], 8 ) != 0 ) || | |
( v != MBEDTLS_DES_DECRYPT && | |
memcmp( buf, des3_test_ecb_enc[u], 8 ) != 0 ) ) | |
{ | |
if( verbose != 0 ) | |
mbedtls_printf( "failed\n" ); | |
ret = 1; | |
goto exit; | |
} | |
if( verbose != 0 ) | |
mbedtls_printf( "passed\n" ); | |
} | |
if( verbose != 0 ) | |
mbedtls_printf( "\n" ); | |
#if defined(MBEDTLS_CIPHER_MODE_CBC) | |
/* | |
* CBC mode | |
*/ | |
for( i = 0; i < 6; i++ ) | |
{ | |
u = i >> 1; | |
v = i & 1; | |
if( verbose != 0 ) | |
mbedtls_printf( " DES%c-CBC-%3d (%s): ", | |
( u == 0 ) ? ' ' : '3', 56 + u * 56, | |
( v == MBEDTLS_DES_DECRYPT ) ? "dec" : "enc" ); | |
memcpy( iv, des3_test_iv, 8 ); | |
memcpy( prv, des3_test_iv, 8 ); | |
memcpy( buf, des3_test_buf, 8 ); | |
switch( i ) | |
{ | |
case 0: | |
mbedtls_des_setkey_dec( &ctx, des3_test_keys ); | |
break; | |
case 1: | |
mbedtls_des_setkey_enc( &ctx, des3_test_keys ); | |
break; | |
case 2: | |
mbedtls_des3_set2key_dec( &ctx3, des3_test_keys ); | |
break; | |
case 3: | |
mbedtls_des3_set2key_enc( &ctx3, des3_test_keys ); | |
break; | |
case 4: | |
mbedtls_des3_set3key_dec( &ctx3, des3_test_keys ); | |
break; | |
case 5: | |
mbedtls_des3_set3key_enc( &ctx3, des3_test_keys ); | |
break; | |
default: | |
return( 1 ); | |
} | |
if( v == MBEDTLS_DES_DECRYPT ) | |
{ | |
for( j = 0; j < 10000; j++ ) | |
{ | |
if( u == 0 ) | |
mbedtls_des_crypt_cbc( &ctx, v, 8, iv, buf, buf ); | |
else | |
mbedtls_des3_crypt_cbc( &ctx3, v, 8, iv, buf, buf ); | |
} | |
} | |
else | |
{ | |
for( j = 0; j < 10000; j++ ) | |
{ | |
unsigned char tmp[8]; | |
if( u == 0 ) | |
mbedtls_des_crypt_cbc( &ctx, v, 8, iv, buf, buf ); | |
else | |
mbedtls_des3_crypt_cbc( &ctx3, v, 8, iv, buf, buf ); | |
memcpy( tmp, prv, 8 ); | |
memcpy( prv, buf, 8 ); | |
memcpy( buf, tmp, 8 ); | |
} | |
memcpy( buf, prv, 8 ); | |
} | |
if( ( v == MBEDTLS_DES_DECRYPT && | |
memcmp( buf, des3_test_cbc_dec[u], 8 ) != 0 ) || | |
( v != MBEDTLS_DES_DECRYPT && | |
memcmp( buf, des3_test_cbc_enc[u], 8 ) != 0 ) ) | |
{ | |
if( verbose != 0 ) | |
mbedtls_printf( "failed\n" ); | |
ret = 1; | |
goto exit; | |
} | |
if( verbose != 0 ) | |
mbedtls_printf( "passed\n" ); | |
} | |
#endif /* MBEDTLS_CIPHER_MODE_CBC */ | |
if( verbose != 0 ) | |
mbedtls_printf( "\n" ); | |
exit: | |
mbedtls_des_free( &ctx ); | |
mbedtls_des3_free( &ctx3 ); | |
return( ret ); | |
} | |
#endif /* MBEDTLS_SELF_TEST */ | |
#endif /* MBEDTLS_DES_C */ |