| | 1 | /* des.h */ |
| | 2 | /* |
| | 3 | This file is part of the ARM-Crypto-Lib. |
| | 4 | Copyright (C) 2008 Daniel Otte (daniel.otte@rub.de) |
| | 5 | |
| | 6 | This program is free software: you can redistribute it and/or modify |
| | 7 | it under the terms of the GNU General Public License as published by |
| | 8 | the Free Software Foundation, either version 3 of the License, or |
| | 9 | (at your option) any later version. |
| | 10 | |
| | 11 | This program is distributed in the hope that it will be useful, |
| | 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| | 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| | 14 | GNU General Public License for more details. |
| | 15 | |
| | 16 | You should have received a copy of the GNU General Public License |
| | 17 | along with this program. If not, see <http://www.gnu.org/licenses/>. |
| | 18 | */ |
| | 19 | /** |
| | 20 | * \file des.h |
| | 21 | * \author Daniel Otte |
| | 22 | * \date 2007-06-16 |
| | 23 | * \brief des and tdes declarations |
| | 24 | * \license GPLv3 or later |
| | 25 | * |
| | 26 | */ |
| | 27 | #ifndef DES_H_ |
| | 28 | #define DES_H_ |
| | 29 | |
| | 30 | /* the FIPS 46-3 (1999-10-25) name for triple DES is triple data encryption algorithm so TDEA. |
| | 31 | * Also we only implement the three key mode */ |
| | 32 | |
| | 33 | /** \def tdea_enc |
| | 34 | * \brief defining an alias for void tdes_enc(void* out, const void* in, const void* key) |
| | 35 | */ |
| | 36 | |
| | 37 | /** \def tdea_dec |
| | 38 | * \brief defining an alias for void tdes_dec(void* out, const void* in, const void* key) |
| | 39 | */ |
| | 40 | |
| | 41 | #define tdea_enc tdes_enc |
| | 42 | #define tdea_dec tdes_dec |
| | 43 | |
| | 44 | /** \fn void des_enc(void* out, const void* in, const void* key) |
| | 45 | * \brief encrypt a block with DES |
| | 46 | * |
| | 47 | * This function encrypts a block of 64 bits (8 bytes) with the DES algorithm. |
| | 48 | * Key expansion is done automatically. The key is 64 bits long, but note that |
| | 49 | * only 56 bits are used (the LSB of each byte is dropped). The input and output |
| | 50 | * blocks may overlap. |
| | 51 | * |
| | 52 | * \param out pointer to the block (64 bit = 8 byte) where the ciphertext is written to |
| | 53 | * \param in pointer to the block (64 bit = 8 byte) where the plaintext is read from |
| | 54 | * \param key pointer to the key (64 bit = 8 byte) |
| | 55 | */ |
| | 56 | void des_enc(void* out, const void* in, const void* key); |
| | 57 | |
| | 58 | /** \fn void des_dec(void* out, const void* in, const void* key) |
| | 59 | * \brief decrypt a block with DES |
| | 60 | * |
| | 61 | * This function decrypts a block of 64 bits (8 bytes) with the DES algorithm. |
| | 62 | * Key expansion is done automatically. The key is 64 bits long, but note that |
| | 63 | * only 56 bits are used (the LSB of each byte is dropped). The input and output |
| | 64 | * blocks may overlap. |
| | 65 | * |
| | 66 | * \param out pointer to the block (64 bit = 8 byte) where the plaintext is written to |
| | 67 | * \param in pointer to the block (64 bit = 8 byte) where the ciphertext is read from |
| | 68 | * \param key pointer to the key (64 bit = 8 byte) |
| | 69 | */ |
| | 70 | void des_dec(void* out, const void* in, const void* key); |
| | 71 | |
| | 72 | /** \fn void tdes_enc(void* out, const void* in, const void* key) |
| | 73 | * \brief encrypt a block with Tripple-DES |
| | 74 | * |
| | 75 | * This function encrypts a block of 64 bits (8 bytes) with the Tripple-DES (EDE) |
| | 76 | * algorithm. Key expansion is done automatically. The key is 192 bits long, but |
| | 77 | * note that only 178 bits are used (the LSB of each byte is dropped). The input |
| | 78 | * and output blocks may overlap. |
| | 79 | * |
| | 80 | * \param out pointer to the block (64 bit = 8 byte) where the ciphertext is written to |
| | 81 | * \param in pointer to the block (64 bit = 8 byte) where the plaintext is read from |
| | 82 | * \param key pointer to the key (192 bit = 24 byte) |
| | 83 | */ |
| | 84 | void tdes_enc(void* out, const void* in, const void* key); |
| | 85 | |
| | 86 | /** \fn void tdes_dec(void* out, const void* in, const void* key) |
| | 87 | * \brief decrypt a block with Tripple-DES |
| | 88 | * |
| | 89 | * This function decrypts a block of 64 bits (8 bytes) with the Tripple-DES (EDE) |
| | 90 | * algorithm. Key expansion is done automatically. The key is 192 bits long, but |
| | 91 | * note that only 178 bits are used (the LSB of each byte is dropped). The input |
| | 92 | * and output blocks may overlap. |
| | 93 | * |
| | 94 | * \param out pointer to the block (64 bit = 8 byte) where the plaintext is written to |
| | 95 | * \param in pointer to the block (64 bit = 8 byte) where the ciphertext is read from |
| | 96 | * \param key pointer to the key (192 bit = 24 byte) |
| | 97 | */ |
| | 98 | void tdes_dec(void* out, const void* in, const void* key); |
| | 99 | |
| | 100 | void tdes_2key_enc(void* out, const void* in, size_t length, const void* key, unsigned char iv[8]); |
| | 101 | void tdes_2key_dec(void* out, const void* in, size_t length, const void* key, unsigned char iv[8]); |
| | 102 | |
| | 103 | #endif /*DES_H_*/ |
| | 104 | |
| | 105 | // Copied from des.h in desfire imp. |
| | 106 | typedef unsigned long DES_KS[16][2]; /* Single-key DES key schedule */ |
| | 107 | typedef unsigned long DES3_KS[48][2]; /* Triple-DES key schedule */ |
| | 108 | |
| | 109 | |
| | 110 | extern int Asmversion; /* 1 if we're linked with an asm version, 0 if C */ |
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