APG v1.2.12

2001-02-22 17:00:10 +06:00
commit c777362a38
31 changed files with 7298 additions and 0 deletions
--- a/rnd.c
+++ b/rnd.c
@@ -0,0 +1,117 @@
+/*
+** Copyright (c) 1999, 2000, 2001
+** Adel I. Mirzazhanov. All rights reserved
+**
+** Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions
+** are met:
+** 
+**     1.Redistributions of source code must retain the above copyright notice,
+**       this list of conditions and the following disclaimer. 
+**     2.Redistributions in binary form must reproduce the above copyright
+**       notice, this list of conditions and the following disclaimer in the
+**       documentation and/or other materials provided with the distribution. 
+**     3.The name of the author may not be used to endorse or promote products
+**       derived from this software without specific prior written permission. 
+** 		  
+** THIS SOFTWARE IS PROVIDED BY THE AUTHOR  ``AS IS'' AND ANY EXPRESS
+** OR IMPLIED WARRANTIES, INCLUDING,  BUT NOT LIMITED TO, THE IMPLIED
+** WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+** ARE DISCLAIMED.  IN  NO  EVENT  SHALL THE AUTHOR BE LIABLE FOR ANY
+** DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+** DAMAGES (INCLUDING, BUT NOT LIMITED TO,  PROCUREMENT OF SUBSTITUTE
+** GOODS OR SERVICES;  LOSS OF USE,  DATA,  OR  PROFITS;  OR BUSINESS
+** INTERRUPTION)  HOWEVER  CAUSED  AND  ON  ANY  THEORY OF LIABILITY,
+** WHETHER  IN  CONTRACT,   STRICT   LIABILITY,  OR  TORT  (INCLUDING
+** NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+** SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/time.h>
+#include "rnd.h"
+#include "./cast/cast.h"
+
+UINT32 __rnd_seed[2]; /* Random Seed 2*32=64 */
+
+/*
+** randint(int n) - Produces a Random number from 0 to n-1 .
+*/
+UINT
+randint(int n)
+{
+ return ( (UINT)( x917cast_rnd() % (UINT32)n ) );
+}
+
+/*
+** ANSI X9.17 pseudorandom generator that uses CAST algorithm instead of DES
+** m = 1
+*/
+UINT32
+x917cast_rnd (void)
+{
+ struct timeval local_time; 
+ UINT32 I[2] = {0L,0L};
+ UINT32 I_plus_s[2] = {0L,0L};
+ UINT32 Xi[2] = {0L,0L};
+ UINT32 Xi_plus_I[2] = {0L,0L};
+ cast_key ky;
+ 
+/**********************************************************************
+* ENCRYPTION KEY HEX : 0x000102030405060708090A0B0C0D0E0F (128-bit)   *
+* YOU CAN CHANGE IT IF YOU WANT                                       *
+**********************************************************************/
+u8 ro_key[16] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
+0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f};
+/**********************************************************************
+* ENCRYPTION KEY HEX : 0x000102030405060708090A0B0C0D0E0F (128-bit)   *
+* YOU CAN CHANGE IT IF YOU WANT                                       *
+**********************************************************************/
+ (void) gettimeofday (&local_time, 0);
+ cast_setkey(&ky, (u8*)&ro_key[0], 16);
+ cast_encrypt (&ky, (u8 *)&local_time, (u8*)&I[0]);            /* I=Ek(D), D-time  */
+ I_plus_s[0] = I[0] ^ __rnd_seed[0];                           /* I0 (+) s0        */
+ I_plus_s[1] = I[1] ^ __rnd_seed[1];                           /* I1 (+) s1        */
+ cast_encrypt (&ky, (u8 *)&I_plus_s[0], (u8*)&Xi[0]);          /* Xi=Ek( I (+) s ) */
+ Xi_plus_I[0] = Xi[0] ^ I[0];                                  /* Xi0 (+) I0       */
+ Xi_plus_I[1] = Xi[1] ^ I[1];                                  /* Xi1 (+) I1       */
+ cast_encrypt (&ky, (u8 *)&Xi_plus_I[0], (u8*)&__rnd_seed[0]); /* s=Ek( Xi (+) I ) */
+ return (Xi[0]);
+}
+
+/*
+** x917cast_setseed (UINT32 seed) - Initializes seed
+** UINT32 seed - seed value
+*/
+void
+x917cast_setseed (UINT32 seed)
+{
+ FILE * dr;
+ UINT32 drs[2];
+
+ if ( (dr = fopen(APG_DEVRANDOM, "r")) != NULL)
+  {
+   (void) fread( (void *)&drs[0], 8, 1, dr);
+   __rnd_seed[0] = seed ^ drs[0];
+   __rnd_seed[1] = seed ^ drs[1];
+   (void) fclose(dr);
+  }
+ else if ( (dr = fopen(APG_DEVURANDOM, "r")) != NULL)
+  {
+   (void) fread( (void *)&drs[0], 8, 1, dr);
+   __rnd_seed[0] = seed ^ drs[0];
+   __rnd_seed[1] = seed ^ drs[1];
+   (void) fclose(dr);
+  }
+ else
+  {
+#ifndef CLISERV
+   fprintf(stderr,"CAN NOT USE /dev/random TO GENERATE RANDOM SEED\n");
+   fprintf(stderr,"USEING LOCAL TIME FOR SEED GENERATION !!!\n");
+   fflush(stderr);
+#endif /* CLISERV */
+   __rnd_seed[0] = seed;
+   __rnd_seed[1] = seed;
+  }
+}