| /* idea.h |
| * |
| * Copyright (C) 2006-2021 wolfSSL Inc. |
| * |
| * This file is part of wolfSSL. |
| * |
| * wolfSSL is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * wolfSSL is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA |
| */ |
| |
| /*! |
| \file wolfssl/wolfcrypt/idea.h |
| */ |
| |
| #ifndef WOLF_CRYPT_IDEA_H |
| #define WOLF_CRYPT_IDEA_H |
| |
| #include <wolfssl/wolfcrypt/types.h> |
| |
| #ifdef HAVE_IDEA |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| enum { |
| IDEA_MODULO = 0x10001, /* 2^16+1 */ |
| IDEA_2EXP16 = 0x10000, /* 2^16 */ |
| IDEA_MASK = 0xFFFF, /* 16 bits set to one */ |
| IDEA_ROUNDS = 8, /* number of rounds for IDEA */ |
| IDEA_SK_NUM = (6*IDEA_ROUNDS + 4), /* number of subkeys */ |
| IDEA_KEY_SIZE = 16, /* size of key in bytes */ |
| IDEA_BLOCK_SIZE = 8, /* size of IDEA blocks in bytes */ |
| IDEA_IV_SIZE = 8, /* size of IDEA IV in bytes */ |
| IDEA_ENCRYPTION = 0, |
| IDEA_DECRYPTION = 1 |
| }; |
| |
| /* IDEA encryption and decryption */ |
| typedef struct Idea { |
| word32 reg[IDEA_BLOCK_SIZE / sizeof(word32)]; /* for CBC mode */ |
| word32 tmp[IDEA_BLOCK_SIZE / sizeof(word32)]; /* for CBC mode */ |
| word16 skey[IDEA_SK_NUM]; /* 832 bits expanded key */ |
| } Idea; |
| |
| WOLFSSL_API int wc_IdeaSetKey(Idea *idea, const byte* key, word16 keySz, |
| const byte *iv, int dir); |
| WOLFSSL_API int wc_IdeaSetIV(Idea *idea, const byte* iv); |
| WOLFSSL_API int wc_IdeaCipher(Idea *idea, byte* out, const byte* in); |
| WOLFSSL_API int wc_IdeaCbcEncrypt(Idea *idea, byte* out, |
| const byte* in, word32 len); |
| WOLFSSL_API int wc_IdeaCbcDecrypt(Idea *idea, byte* out, |
| const byte* in, word32 len); |
| #ifdef __cplusplus |
| } /* extern "C" */ |
| #endif |
| |
| #endif /* HAVE_IDEA */ |
| #endif /* WOLF_CRYPT_IDEA_H */ |