crypto/dist/heimdal/lib/kadm5/keys.c

   1 /*
   2  * Copyright (c) 1997 - 2000 Kungliga Tekniska Högskolan
   3  * (Royal Institute of Technology, Stockholm, Sweden).
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  *
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * 3. Neither the name of the Institute nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #include "kadm5_locl.h"
  35
  36 __RCSID("$Heimdal: keys.c 14297 2004-10-11 23:50:25Z lha $"
  37         "$NetBSD$");
  38
  39 /*
  40  * free all the memory used by (len, keys)
  41  */
  42
  43 void
  44 _kadm5_free_keys (krb5_context context,
  45                   int len, Key *keys)
  46 {
  47     hdb_free_keys(context, len, keys);
  48 }
  49
  50 /*
  51  * null-ify `len', `keys'
  52  */
  53
  54 void
  55 _kadm5_init_keys (Key *keys, int len)
  56 {
  57     int i;
  58
  59     for (i = 0; i < len; ++i) {
  60         keys[i].mkvno               = NULL;
  61         keys[i].salt                = NULL;
  62         keys[i].key.keyvalue.length = 0;
  63         keys[i].key.keyvalue.data   = NULL;
  64     }
  65 }
  66
  67 /*
  68  * return 0 iff `keys1, len1' and `keys2, len2' are identical
  69  */
  70
  71 int
  72 _kadm5_cmp_keys(Key *keys1, int len1, Key *keys2, int len2)
  73 {
  74     int i;
  75
  76     if (len1 != len2)
  77         return 1;
  78
  79     for (i = 0; i < len1; ++i) {
  80         if ((keys1[i].salt != NULL && keys2[i].salt == NULL)
  81             || (keys1[i].salt == NULL && keys2[i].salt != NULL))
  82             return 1;
  83         if (keys1[i].salt != NULL) {
  84             if (keys1[i].salt->type != keys2[i].salt->type)
  85                 return 1;
  86             if (keys1[i].salt->salt.length != keys2[i].salt->salt.length)
  87                 return 1;
  88             if (memcmp (keys1[i].salt->salt.data, keys2[i].salt->salt.data,
  89                         keys1[i].salt->salt.length) != 0)
  90                 return 1;
  91         }
  92         if (keys1[i].key.keytype != keys2[i].key.keytype)
  93             return 1;
  94         if (keys1[i].key.keyvalue.length != keys2[i].key.keyvalue.length)
  95             return 1;
  96         if (memcmp (keys1[i].key.keyvalue.data, keys2[i].key.keyvalue.data,
  97                     keys1[i].key.keyvalue.length) != 0)
  98             return 1;
  99     }
 100     return 0;
 101 }