lib/hcrypto/rnd_keys.c

   1 /*
   2  * Copyright (c) 1995, 1996, 1997, 1999 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 #ifdef HAVE_CONFIG_H
  35 #include "config.h"
  36
  37 RCSID("$Id$");
  38 #endif
  39
  40 #define HC_DEPRECATED
  41
  42 #ifdef KRB5
  43 #include <krb5-types.h>
  44 #endif
  45 #include <des.h>
  46 #include <rand.h>
  47
  48 #include <stdlib.h>
  49
  50 #undef __attribute__
  51 #define __attribute__(X)
  52
  53 void HC_DEPRECATED
  54 DES_rand_data(void *outdata, int size)
  55 {
  56     RAND_bytes(outdata, size);
  57 }
  58
  59 void HC_DEPRECATED
  60 DES_generate_random_block(DES_cblock *block)
  61 {
  62     RAND_bytes(block, sizeof(*block));
  63 }
  64
  65 #define DES_rand_data_key hc_DES_rand_data_key
  66
  67 void HC_DEPRECATED
  68 DES_rand_data_key(DES_cblock *key);
  69
  70 /*
  71  * Generate a random DES key.
  72  */
  73
  74 void HC_DEPRECATED
  75 DES_rand_data_key(DES_cblock *key)
  76 {
  77     DES_new_random_key(key);
  78 }
  79
  80 void HC_DEPRECATED
  81 DES_set_sequence_number(void *ll)
  82 {
  83 }
  84
  85 void HC_DEPRECATED
  86 DES_set_random_generator_seed(DES_cblock *seed)
  87 {
  88     RAND_seed(seed, sizeof(*seed));
  89 }
  90
  91 /**
  92  * Generate a random des key using a random block, fixup parity and
  93  * skip weak keys.
  94  *
  95  * @param key is set to a random key.
  96  *
  97  * @return 0 on success, non zero on random number generator failure.
  98  *
  99  * @ingroup hcrypto_des
 100  */
 101
 102 int HC_DEPRECATED
 103 DES_new_random_key(DES_cblock *key)
 104 {
 105     do {
 106         if (RAND_bytes(key, sizeof(*key)) != 1)
 107             return 1;
 108         DES_set_odd_parity(key);
 109     } while(DES_is_weak_key(key));
 110
 111     return(0);
 112 }
 113
 114 /**
 115  * Seed the random number generator. Deprecated, use @ref page_rand
 116  *
 117  * @param seed a seed to seed that random number generate with.
 118  *
 119  * @ingroup hcrypto_des
 120  */
 121
 122 void HC_DEPRECATED
 123 DES_init_random_number_generator(DES_cblock *seed)
 124 {
 125     RAND_seed(seed, sizeof(*seed));
 126 }
 127
 128 /**
 129  * Generate a random key, deprecated since it doesn't return an error
 130  * code, use DES_new_random_key().
 131  *
 132  * @param key is set to a random key.
 133  *
 134  * @ingroup hcrypto_des
 135  */
 136
 137 void HC_DEPRECATED
 138 DES_random_key(DES_cblock *key)
 139 {
 140     if (DES_new_random_key(key))
 141         abort();
 142 }