| yuezonghe | 824eb0c | 2024-06-27 02:32:26 -0700 | [diff] [blame] | 1 | /* idea.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 | /*! |
| 23 | \file wolfssl/wolfcrypt/idea.h |
| 24 | */ |
| 25 | |
| 26 | #ifndef WOLF_CRYPT_IDEA_H |
| 27 | #define WOLF_CRYPT_IDEA_H |
| 28 | |
| 29 | #include <wolfssl/wolfcrypt/types.h> |
| 30 | |
| 31 | #ifdef HAVE_IDEA |
| 32 | |
| 33 | #ifdef __cplusplus |
| 34 | extern "C" { |
| 35 | #endif |
| 36 | |
| 37 | enum { |
| 38 | IDEA_MODULO = 0x10001, /* 2^16+1 */ |
| 39 | IDEA_2EXP16 = 0x10000, /* 2^16 */ |
| 40 | IDEA_MASK = 0xFFFF, /* 16 bits set to one */ |
| 41 | IDEA_ROUNDS = 8, /* number of rounds for IDEA */ |
| 42 | IDEA_SK_NUM = (6*IDEA_ROUNDS + 4), /* number of subkeys */ |
| 43 | IDEA_KEY_SIZE = 16, /* size of key in bytes */ |
| 44 | IDEA_BLOCK_SIZE = 8, /* size of IDEA blocks in bytes */ |
| 45 | IDEA_IV_SIZE = 8, /* size of IDEA IV in bytes */ |
| 46 | IDEA_ENCRYPTION = 0, |
| 47 | IDEA_DECRYPTION = 1 |
| 48 | }; |
| 49 | |
| 50 | /* IDEA encryption and decryption */ |
| 51 | typedef struct Idea { |
| 52 | word32 reg[IDEA_BLOCK_SIZE / sizeof(word32)]; /* for CBC mode */ |
| 53 | word32 tmp[IDEA_BLOCK_SIZE / sizeof(word32)]; /* for CBC mode */ |
| 54 | word16 skey[IDEA_SK_NUM]; /* 832 bits expanded key */ |
| 55 | } Idea; |
| 56 | |
| 57 | WOLFSSL_API int wc_IdeaSetKey(Idea *idea, const byte* key, word16 keySz, |
| 58 | const byte *iv, int dir); |
| 59 | WOLFSSL_API int wc_IdeaSetIV(Idea *idea, const byte* iv); |
| 60 | WOLFSSL_API int wc_IdeaCipher(Idea *idea, byte* out, const byte* in); |
| 61 | WOLFSSL_API int wc_IdeaCbcEncrypt(Idea *idea, byte* out, |
| 62 | const byte* in, word32 len); |
| 63 | WOLFSSL_API int wc_IdeaCbcDecrypt(Idea *idea, byte* out, |
| 64 | const byte* in, word32 len); |
| 65 | #ifdef __cplusplus |
| 66 | } /* extern "C" */ |
| 67 | #endif |
| 68 | |
| 69 | #endif /* HAVE_IDEA */ |
| 70 | #endif /* WOLF_CRYPT_IDEA_H */ |