1 /* $NetBSD: cipher-chachapoly.h,v 1.3 2020/05/28 17:05:49 christos Exp $ */ 2 /* $OpenBSD: cipher-chachapoly.h,v 1.5 2020/04/03 04:27:03 djm Exp $ */ 3 4 /* 5 * Copyright (c) Damien Miller 2013 <djm@mindrot.org> 6 * 7 * Permission to use, copy, modify, and distribute this software for any 8 * purpose with or without fee is hereby granted, provided that the above 9 * copyright notice and this permission notice appear in all copies. 10 * 11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18 */ 19 #ifndef CHACHA_POLY_AEAD_H 20 #define CHACHA_POLY_AEAD_H 21 22 #include <sys/types.h> 23 #include "chacha.h" 24 #include "poly1305.h" 25 26 #define CHACHA_KEYLEN 32 /* Only 256 bit keys used here */ 27 28 struct chachapoly_ctx; 29 30 struct chachapoly_ctx *chachapoly_new(const u_char *key, u_int keylen) 31 __attribute__((__bounded__(__buffer__, 1, 2))); 32 void chachapoly_free(struct chachapoly_ctx *cpctx); 33 34 int chachapoly_crypt(struct chachapoly_ctx *cpctx, u_int seqnr, 35 u_char *dest, const u_char *src, u_int len, u_int aadlen, u_int authlen, 36 int do_encrypt); 37 int chachapoly_get_length(struct chachapoly_ctx *cpctx, 38 u_int *plenp, u_int seqnr, const u_char *cp, u_int len) 39 __attribute__((__bounded__(__buffer__, 4, 5))); 40 41 #endif /* CHACHA_POLY_AEAD_H */ 42