1 | /* des.h
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2 | *
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3 | * Copyright (C) 2015 wolfSSL Inc.
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4 | *
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5 | * This file is part of wolfSSL. (formerly known as wolfSSL)
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6 | *
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7 | * wolfSSL is free software; you can redistribute it and/or modify
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8 | * it under the terms of the GNU General Public License as published by
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9 | * the Free Software Foundation; either version 2 of the License, or
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10 | * (at your option) any later version.
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11 | *
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12 | * wolfSSL is distributed in the hope that it will be useful,
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13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 | * GNU General Public License for more details.
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16 | *
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17 | * You should have received a copy of the GNU General Public License
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18 | * along with this program; if not, write to the Free Software
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19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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20 | */
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21 |
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22 |
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23 | /* des.h defines mini des openssl compatibility layer
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24 | *
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25 | */
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26 |
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27 |
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28 | #ifndef WOLFSSL_DES_H_
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29 | #define WOLFSSL_DES_H_
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30 |
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31 | #include <wolfssl/wolfcrypt/settings.h>
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32 |
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33 | #ifndef NO_DES3
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34 |
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35 | #ifdef WOLFSSL_PREFIX
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36 | #include "prefix_des.h"
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37 | #endif
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38 |
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39 |
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40 | #ifdef __cplusplus
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41 | extern "C" {
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42 | #endif
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43 |
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44 | typedef unsigned char WOLFSSL_DES_cblock[8];
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45 | typedef /* const */ WOLFSSL_DES_cblock WOLFSSL_const_DES_cblock;
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46 | typedef WOLFSSL_DES_cblock WOLFSSL_DES_key_schedule;
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47 |
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48 |
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49 | enum {
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50 | DES_ENCRYPT = 1,
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51 | DES_DECRYPT = 0
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52 | };
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53 |
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54 |
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55 | WOLFSSL_API void wolfSSL_DES_set_key_unchecked(WOLFSSL_const_DES_cblock*,
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56 | WOLFSSL_DES_key_schedule*);
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57 | WOLFSSL_API int wolfSSL_DES_key_sched(WOLFSSL_const_DES_cblock* key,
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58 | WOLFSSL_DES_key_schedule* schedule);
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59 | WOLFSSL_API void wolfSSL_DES_cbc_encrypt(const unsigned char* input,
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60 | unsigned char* output, long length,
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61 | WOLFSSL_DES_key_schedule* schedule, WOLFSSL_DES_cblock* ivec,
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62 | int enc);
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63 | WOLFSSL_API void wolfSSL_DES_ncbc_encrypt(const unsigned char* input,
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64 | unsigned char* output, long length,
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65 | WOLFSSL_DES_key_schedule* schedule,
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66 | WOLFSSL_DES_cblock* ivec, int enc);
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67 |
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68 | WOLFSSL_API void wolfSSL_DES_set_odd_parity(WOLFSSL_DES_cblock*);
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69 | WOLFSSL_API void wolfSSL_DES_ecb_encrypt(WOLFSSL_DES_cblock*, WOLFSSL_DES_cblock*,
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70 | WOLFSSL_DES_key_schedule*, int);
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71 |
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72 |
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73 | typedef WOLFSSL_DES_cblock DES_cblock;
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74 | typedef WOLFSSL_const_DES_cblock const_DES_cblock;
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75 | typedef WOLFSSL_DES_key_schedule DES_key_schedule;
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76 |
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77 | #define DES_set_key_unchecked wolfSSL_DES_set_key_unchecked
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78 | #define DES_key_sched wolfSSL_DES_key_sched
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79 | #define DES_cbc_encrypt wolfSSL_DES_cbc_encrypt
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80 | #define DES_ncbc_encrypt wolfSSL_DES_ncbc_encrypt
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81 | #define DES_set_odd_parity wolfSSL_DES_set_odd_parity
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82 | #define DES_ecb_encrypt wolfSSL_DES_ecb_encrypt
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83 | #define DES_ede3_cbc_encrypt(input, output, sz, ks1, ks2, ks3, ivec, enc) \
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84 | do { \
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85 | Des3 des; \
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86 | byte key[24];/* EDE uses 24 size key */ \
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87 | memcpy(key, (ks1), DES_BLOCK_SIZE); \
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88 | memcpy(&key[DES_BLOCK_SIZE], (ks2), DES_BLOCK_SIZE); \
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89 | memcpy(&key[DES_BLOCK_SIZE * 2], (ks3), DES_BLOCK_SIZE); \
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90 | if (enc) { \
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91 | wc_Des3_SetKey(&des, key, (const byte*)(ivec), DES_ENCRYPTION); \
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92 | wc_Des3_CbcEncrypt(&des, (output), (input), (sz)); \
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93 | } \
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94 | else { \
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95 | wc_Des3_SetKey(&des, key, (const byte*)(ivec), DES_ENCRYPTION); \
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96 | wc_Des3_CbcDecrypt(&des, (output), (input), (sz)); \
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97 | } \
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98 | } while(0)
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99 |
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100 | #ifdef __cplusplus
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101 | } /* extern "C" */
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102 | #endif
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103 |
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104 | #endif /* NO_DES3 */
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105 |
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106 | #endif /* WOLFSSL_DES_H_ */
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