contrib/opie/libopie/hashlen.c

   1 /* hashlen.c: The opiehashlen() library function.
   2
   3 %%% copyright-cmetz-96
   4 This software is Copyright 1996-2001 by Craig Metz, All Rights Reserved.
   5 The Inner Net License Version 3 applies to this software.
   6 You should have received a copy of the license with this software. If
   7 you didn't get a copy, you may request one from <license@inner.net>.
   8
   9         History:
  10
  11         Modified by cmetz for OPIE 2.4. Use struct opie_otpkey, isolate variables.
  12         Created by cmetz for OPIE 2.3.
  13
  14 $FreeBSD: src/contrib/opie/libopie/hashlen.c,v 1.3.6.2 2002/07/15 14:48:47 des Exp $
  15 $DragonFly: src/contrib/opie/libopie/hashlen.c,v 1.2 2003/06/17 04:24:05 dillon Exp $
  16 */
  17
  18 #include "opie_cfg.h"
  19 #include "opie.h"
  20
  21 #include <sha.h>
  22 #include <md4.h>
  23 #include <md5.h>
  24
  25 VOIDRET opiehashlen FUNCTION((algorithm, in, out, n), int algorithm AND
  26 VOIDPTR in AND struct opie_otpkey *out AND int n)
  27 {
  28   UINT4 *results = (UINT4 *)out;
  29   UINT4 mdx_tmp[4];
  30
  31   switch(algorithm) {
  32     case 3: {
  33       SHA_CTX sha;
  34       UINT4 digest[5];
  35       SHA1_Init(&sha);
  36       SHA1_Update(&sha, (unsigned char *)in, n);
  37       SHA1_Final((unsigned char *)digest, &sha);
  38       results[0] = digest[0] ^ digest[2] ^ digest[4];
  39       results[1] = digest[1] ^ digest[3];
  40       break;
  41     }
  42     case 4: {
  43       MD4_CTX mdx;
  44       MD4Init(&mdx);
  45       MD4Update(&mdx, (unsigned char *)in, n);
  46       MD4Final((unsigned char *)mdx_tmp, &mdx);
  47       results[0] = mdx_tmp[0] ^ mdx_tmp[2];
  48       results[1] = mdx_tmp[1] ^ mdx_tmp[3];
  49       break;
  50     }
  51     case 5: {
  52       MD5_CTX mdx;
  53       MD5Init(&mdx);
  54       MD5Update(&mdx, (unsigned char *)in, n);
  55       MD5Final((unsigned char *)mdx_tmp, &mdx);
  56       results[0] = mdx_tmp[0] ^ mdx_tmp[2];
  57       results[1] = mdx_tmp[1] ^ mdx_tmp[3];
  58       break;
  59     }
  60   }
  61 }