| yuezonghe | 824eb0c | 2024-06-27 02:32:26 -0700 | [diff] [blame] | 1 | /* rc2.h |
| 2 | * |
| 3 | * Copyright (C) 2006-2021 wolfSSL Inc. |
| 4 | * |
| 5 | * This file is part of wolfSSL. |
| 6 | * |
| 7 | * wolfSSL is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; either version 2 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | * |
| 12 | * wolfSSL is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License |
| 18 | * along with this program; if not, write to the Free Software |
| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA |
| 20 | */ |
| 21 | |
| 22 | #ifndef WOLF_CRYPT_RC2_H |
| 23 | #define WOLF_CRYPT_RC2_H |
| 24 | |
| 25 | #include <wolfssl/wolfcrypt/types.h> |
| 26 | |
| 27 | #ifdef WC_RC2 |
| 28 | |
| 29 | #ifdef __cplusplus |
| 30 | extern "C" { |
| 31 | #endif |
| 32 | |
| 33 | enum { |
| 34 | RC2_MAX_KEY_SIZE = 128, /* max effective key size, octets */ |
| 35 | RC2_BLOCK_SIZE = 8 |
| 36 | }; |
| 37 | |
| 38 | /* RC2 encryption and decryption */ |
| 39 | typedef struct Rc2 { |
| 40 | ALIGN16 word16 key[RC2_MAX_KEY_SIZE/2]; |
| 41 | ALIGN16 word32 reg[RC2_BLOCK_SIZE / sizeof(word32)]; /* for CBC mode */ |
| 42 | ALIGN16 word32 tmp[RC2_BLOCK_SIZE / sizeof(word32)]; /* same */ |
| 43 | word32 keylen; /* key length, octets */ |
| 44 | word32 bits; /* effective key length, bits */ |
| 45 | } Rc2; |
| 46 | |
| 47 | WOLFSSL_API int wc_Rc2SetKey(Rc2* rc2, const byte* key, word32 length, |
| 48 | const byte* iv, word32 bits); |
| 49 | WOLFSSL_API int wc_Rc2SetIV(Rc2* rc2, const byte* iv); |
| 50 | |
| 51 | /* RC2-ECB */ |
| 52 | WOLFSSL_API int wc_Rc2EcbEncrypt(Rc2* rc2, byte* out, |
| 53 | const byte* in, word32 sz); |
| 54 | WOLFSSL_API int wc_Rc2EcbDecrypt(Rc2* rc2, byte* out, |
| 55 | const byte* in, word32 sz); |
| 56 | |
| 57 | /* RC2-CBC */ |
| 58 | WOLFSSL_API int wc_Rc2CbcEncrypt(Rc2* rc2, byte* out, |
| 59 | const byte* in, word32 sz); |
| 60 | WOLFSSL_API int wc_Rc2CbcDecrypt(Rc2* rc2, byte* out, |
| 61 | const byte* in, word32 sz); |
| 62 | |
| 63 | #ifdef __cplusplus |
| 64 | } /* extern "C" */ |
| 65 | #endif |
| 66 | |
| 67 | #endif /* WC_RC2 */ |
| 68 | #endif /* WOLF_CRYPT_RC2_H */ |