| Adam Langley | d059297 | 2015-03-30 14:49:51 -0700 | [diff] [blame] | 1 | /* $OpenBSD: cipher-chachapoly.h,v 1.4 2014/06/24 01:13:21 djm Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Copyright (c) Damien Miller 2013 <djm@mindrot.org> |
| 5 | * |
| 6 | * Permission to use, copy, modify, and distribute this software for any |
| 7 | * purpose with or without fee is hereby granted, provided that the above |
| 8 | * copyright notice and this permission notice appear in all copies. |
| 9 | * |
| 10 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| 11 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| 12 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| 13 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 14 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 15 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| 16 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 17 | */ |
| 18 | #ifndef CHACHA_POLY_AEAD_H |
| 19 | #define CHACHA_POLY_AEAD_H |
| 20 | |
| 21 | #include <sys/types.h> |
| 22 | #include "chacha.h" |
| 23 | #include "poly1305.h" |
| 24 | |
| 25 | #define CHACHA_KEYLEN 32 /* Only 256 bit keys used here */ |
| 26 | |
| 27 | struct chachapoly_ctx { |
| 28 | struct chacha_ctx main_ctx, header_ctx; |
| 29 | }; |
| 30 | |
| 31 | int chachapoly_init(struct chachapoly_ctx *cpctx, |
| 32 | const u_char *key, u_int keylen) |
| 33 | __attribute__((__bounded__(__buffer__, 2, 3))); |
| 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 */ |