libressl/include/openssl/poly1305.h

   1 /* $OpenBSD: poly1305.h,v 1.3 2014/07/25 14:04:51 jsing Exp $ */
   2 /*
   3  * Copyright (c) 2014 Joel Sing <jsing@openbsd.org>
   4  *
   5  * Permission to use, copy, modify, and distribute this software for any
   6  * purpose with or without fee is hereby granted, provided that the above
   7  * copyright notice and this permission notice appear in all copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  10  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  11  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  12  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  13  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  14  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  15  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  16  */
  17
  18 #ifndef HEADER_POLY1305_H
  19 #define HEADER_POLY1305_H
  20
  21 #include <openssl/opensslconf.h>
  22
  23 #if defined(OPENSSL_NO_POLY1305)
  24 #error Poly1305 is disabled.
  25 #endif
  26
  27 #include <stddef.h>
  28
  29 #ifdef  __cplusplus
  30 extern "C" {
  31 #endif
  32
  33 typedef struct poly1305_context {
  34         size_t aligner;
  35         unsigned char opaque[136];
  36 } poly1305_context;
  37
  38 typedef struct poly1305_context poly1305_state;
  39
  40 void CRYPTO_poly1305_init(poly1305_context *ctx, const unsigned char key[32]);
  41 void CRYPTO_poly1305_update(poly1305_context *ctx, const unsigned char *in,
  42     size_t len);
  43 void CRYPTO_poly1305_finish(poly1305_context *ctx, unsigned char mac[16]);
  44
  45 #ifdef  __cplusplus
  46 }
  47 #endif
  48
  49 #endif /* HEADER_POLY1305_H */