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/* arc4.h
*
* Copyright (C) 2006-2020 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/arc4.h
*/
#ifndef WOLF_CRYPT_ARC4_H
#define WOLF_CRYPT_ARC4_H
#include <wolfssl/wolfcrypt/types.h>
#ifdef __cplusplus
extern "C" {
#endif
#ifdef WOLFSSL_ASYNC_CRYPT
#include <wolfssl/wolfcrypt/async.h>
#endif
enum {
ARC4_ENC_TYPE = 4, /* cipher unique type */
ARC4_STATE_SIZE = 256,
RC4_KEY_SIZE = 16, /* always 128bit */
};
/* ARC4 encryption and decryption */
typedef struct Arc4 {
byte x;
byte y;
byte state[ARC4_STATE_SIZE];
#ifdef WOLFSSL_ASYNC_CRYPT
WC_ASYNC_DEV asyncDev;
#endif
void* heap;
} Arc4;
WOLFSSL_API int wc_Arc4Process(Arc4*, byte*, const byte*, word32);
WOLFSSL_API int wc_Arc4SetKey(Arc4*, const byte*, word32);
WOLFSSL_API int wc_Arc4Init(Arc4*, void*, int);
WOLFSSL_API void wc_Arc4Free(Arc4*);
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* WOLF_CRYPT_ARC4_H */
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