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/* $OpenBSD: arc4.h,v 1.3 2007/09/11 12:07:05 djm Exp $ */
/*
* Copyright (c) 2003 Markus Friedl <markus@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#define RC4STATE 256
#define RC4KEYLEN 16
struct rc4_ctx {
u_int8_t x, y;
u_int8_t state[RC4STATE];
};
void rc4_keysetup(struct rc4_ctx *, u_char *, u_int32_t)
__attribute__((__bounded__(__buffer__,2,3)));
void rc4_crypt(struct rc4_ctx *, u_char *, u_char *, u_int32_t)
__attribute__((__bounded__(__buffer__,2,4)))
__attribute__((__bounded__(__buffer__,3,4)));
void rc4_getbytes(struct rc4_ctx *, u_char *, u_int32_t)
__attribute__((__bounded__(__buffer__,2,3)));
void rc4_skip(struct rc4_ctx *, u_int32_t);
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