/* $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);