| /* $OpenBSD: cipher-chachapoly.h,v 1.4 2014/06/24 01:13:21 djm Exp $ */ |
| |
| /* |
| * Copyright (c) Damien Miller 2013 <djm@mindrot.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. |
| */ |
| #ifndef CHACHA_POLY_AEAD_H |
| #define CHACHA_POLY_AEAD_H |
| |
| #include <sys/types.h> |
| #include "chacha.h" |
| #include "poly1305.h" |
| |
| #define CHACHA_KEYLEN 32 /* Only 256 bit keys used here */ |
| |
| struct chachapoly_ctx { |
| struct chacha_ctx main_ctx, header_ctx; |
| }; |
| |
| int chachapoly_init(struct chachapoly_ctx *cpctx, |
| const u_char *key, u_int keylen) |
| __attribute__((__bounded__(__buffer__, 2, 3))); |
| 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 */ |