crypto/openssh/mac.h

   1 /* $OpenBSD: mac.h,v 1.10 2016/07/08 03:44:42 djm Exp $ */
   2 /*
   3  * Copyright (c) 2001 Markus Friedl.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  15  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  16  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  17  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  18  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  19  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  20  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  21  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  23  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24  */
  25
  26 #ifndef SSHMAC_H
  27 #define SSHMAC_H
  28
  29 #include <sys/types.h>
  30
  31 struct sshmac {
  32         char    *name;
  33         int     enabled;
  34         u_int   mac_len;
  35         u_char  *key;
  36         u_int   key_len;
  37         int     type;
  38         int     etm;            /* Encrypt-then-MAC */
  39         struct ssh_hmac_ctx     *hmac_ctx;
  40         struct umac_ctx         *umac_ctx;
  41 };
  42
  43 int      mac_valid(const char *);
  44 char    *mac_alg_list(char);
  45 int      mac_setup(struct sshmac *, char *);
  46 int      mac_init(struct sshmac *);
  47 int      mac_compute(struct sshmac *, u_int32_t, const u_char *, int,
  48     u_char *, size_t);
  49 int      mac_check(struct sshmac *, u_int32_t, const u_char *, size_t,
  50     const u_char *, size_t);
  51 void     mac_clear(struct sshmac *);
  52
  53 #endif /* SSHMAC_H */