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Annotation of src/usr.bin/ssh/cipher-chachapoly.h, Revision 1.4

1.4     ! djm         1: /* $OpenBSD: cipher-chachapoly.h,v 1.3 2014/05/02 03:27:54 djm Exp $ */
1.1       djm         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:
1.4     ! djm        31: int    chachapoly_init(struct chachapoly_ctx *cpctx,
1.1       djm        32:     const u_char *key, u_int keylen)
1.3       djm        33:     __attribute__((__bounded__(__buffer__, 2, 3)));
1.1       djm        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)
1.3       djm        39:     __attribute__((__bounded__(__buffer__, 4, 5)));
1.1       djm        40:
                     41: #endif /* CHACHA_POLY_AEAD_H */