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