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/* rc2.h
*
* Copyright (C) 2006-2026 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 3 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
*/
#ifndef WOLF_CRYPT_RC2_H
#define WOLF_CRYPT_RC2_H
#include <wolfssl/wolfcrypt/types.h>
#ifdef WC_RC2
#ifdef __cplusplus
extern "C" {
#endif
enum {
RC2_MAX_KEY_SIZE = 128, /* max effective key size, octets */
RC2_BLOCK_SIZE = 8
};
/* RC2 encryption and decryption */
typedef struct Rc2 {
ALIGN16 word16 key[RC2_MAX_KEY_SIZE/2];
ALIGN16 word32 reg[RC2_BLOCK_SIZE / sizeof(word32)]; /* for CBC mode */
ALIGN16 word32 tmp[RC2_BLOCK_SIZE / sizeof(word32)]; /* same */
word32 keylen; /* key length, octets */
word32 bits; /* effective key length, bits */
} Rc2;
WOLFSSL_API int wc_Rc2SetKey(Rc2* rc2, const byte* key, word32 length,
const byte* iv, word32 bits);
WOLFSSL_API int wc_Rc2SetIV(Rc2* rc2, const byte* iv);
/* RC2-ECB */
WOLFSSL_API int wc_Rc2EcbEncrypt(Rc2* rc2, byte* out,
const byte* in, word32 sz);
WOLFSSL_API int wc_Rc2EcbDecrypt(Rc2* rc2, byte* out,
const byte* in, word32 sz);
/* RC2-CBC */
WOLFSSL_API int wc_Rc2CbcEncrypt(Rc2* rc2, byte* out,
const byte* in, word32 sz);
WOLFSSL_API int wc_Rc2CbcDecrypt(Rc2* rc2, byte* out,
const byte* in, word32 sz);
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* WC_RC2 */
#endif /* WOLF_CRYPT_RC2_H */