1*8db691beSchristos /* $NetBSD: cipher-chachapoly.h,v 1.3 2020/05/28 17:05:49 christos Exp $ */ 2*8db691beSchristos /* $OpenBSD: cipher-chachapoly.h,v 1.5 2020/04/03 04:27:03 djm Exp $ */ 35484a5efSchristos 45484a5efSchristos /* 55484a5efSchristos * Copyright (c) Damien Miller 2013 <djm@mindrot.org> 65484a5efSchristos * 75484a5efSchristos * Permission to use, copy, modify, and distribute this software for any 85484a5efSchristos * purpose with or without fee is hereby granted, provided that the above 95484a5efSchristos * copyright notice and this permission notice appear in all copies. 105484a5efSchristos * 115484a5efSchristos * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 125484a5efSchristos * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 135484a5efSchristos * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 145484a5efSchristos * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 155484a5efSchristos * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 165484a5efSchristos * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 175484a5efSchristos * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 185484a5efSchristos */ 195484a5efSchristos #ifndef CHACHA_POLY_AEAD_H 205484a5efSchristos #define CHACHA_POLY_AEAD_H 215484a5efSchristos 225484a5efSchristos #include <sys/types.h> 235484a5efSchristos #include "chacha.h" 245484a5efSchristos #include "poly1305.h" 255484a5efSchristos 265484a5efSchristos #define CHACHA_KEYLEN 32 /* Only 256 bit keys used here */ 275484a5efSchristos 28*8db691beSchristos struct chachapoly_ctx; 295484a5efSchristos 30*8db691beSchristos struct chachapoly_ctx *chachapoly_new(const u_char *key, u_int keylen) 31*8db691beSchristos __attribute__((__bounded__(__buffer__, 1, 2))); 32*8db691beSchristos void chachapoly_free(struct chachapoly_ctx *cpctx); 33*8db691beSchristos 345484a5efSchristos int chachapoly_crypt(struct chachapoly_ctx *cpctx, u_int seqnr, 355484a5efSchristos u_char *dest, const u_char *src, u_int len, u_int aadlen, u_int authlen, 365484a5efSchristos int do_encrypt); 375484a5efSchristos int chachapoly_get_length(struct chachapoly_ctx *cpctx, 385484a5efSchristos u_int *plenp, u_int seqnr, const u_char *cp, u_int len) 395484a5efSchristos __attribute__((__bounded__(__buffer__, 4, 5))); 405484a5efSchristos 415484a5efSchristos #endif /* CHACHA_POLY_AEAD_H */ 42