release/src/router/tinc/src/gcrypt/digest.h

   1 /*
   2     digest.h -- header file digest.c
   3     Copyright (C) 2007-2009 Guus Sliepen <guus@tinc-vpn.org>
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License along
  16     with this program; if not, write to the Free Software Foundation, Inc.,
  17     51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19
  20 #ifndef __TINC_DIGEST_H__
  21 #define __TINC_DIGEST_H__
  22
  23 #include <gcrypt.h>
  24
  25 #define DIGEST_MAX_SIZE 64
  26
  27 typedef struct digest {
  28         int algo;
  29         int nid;
  30         int maclength;
  31         gcry_md_hd_t hmac;
  32 } digest_t;
  33
  34 extern bool digest_open_by_name(struct digest *, const char *name, int maclength);
  35 extern bool digest_open_by_nid(struct digest *, int nid, int maclength);
  36 extern bool digest_open_sha1(struct digest *, int maclength);
  37 extern void digest_close(struct digest *);
  38 extern bool digest_create(struct digest *, const void *indata, size_t inlen, void *outdata);
  39 extern bool digest_verify(struct digest *, const void *indata, size_t inlen, const void *digestdata);
  40 extern bool digest_set_key(struct digest *, const void *key, size_t len);
  41 extern int digest_get_nid(const struct digest *);
  42 extern size_t digest_length(const struct digest *);
  43 extern bool digest_active(const struct digest *);
  44
  45 #endif