/* $NetBSD: cipher-chachapoly.h,v 1.2.4.1 2023/12/25 12:31:03 martin Exp $ */ /* $OpenBSD: cipher-chachapoly.h,v 1.5 2020/04/03 04:27:03 djm Exp $ */ /* * Copyright (c) Damien Miller 2013 * * 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. */ #ifndef CHACHA_POLY_AEAD_H #define CHACHA_POLY_AEAD_H #include #include "chacha.h" #include "poly1305.h" #define CHACHA_KEYLEN 32 /* Only 256 bit keys used here */ struct chachapoly_ctx; struct chachapoly_ctx *chachapoly_new(const u_char *key, u_int keylen) __attribute__((__bounded__(__buffer__, 1, 2))); void chachapoly_free(struct chachapoly_ctx *cpctx); int chachapoly_crypt(struct chachapoly_ctx *cpctx, u_int seqnr, u_char *dest, const u_char *src, u_int len, u_int aadlen, u_int authlen, int do_encrypt); int chachapoly_get_length(struct chachapoly_ctx *cpctx, u_int *plenp, u_int seqnr, const u_char *cp, u_int len) __attribute__((__bounded__(__buffer__, 4, 5))); #endif /* CHACHA_POLY_AEAD_H */