skinc/apg
1
Fork 0
Code Releases 8 Activity

APG v2.1.0

Browse Source
This commit is contained in:
Adel I. Mirzazhanov
2002-09-13 15:10:49 +07:00
committed by skinc
parent 8087f2a5e4
commit 900ff5ea18
44 changed files with 2999 additions and 880 deletions
Download Patch File Download Diff File Expand all files Collapse all files

108
rnd.c
View File

@@ -1,5 +1,5 @@
/*
** Copyright (c) 1999, 2000, 2001
** Copyright (c) 1999, 2000, 2001, 2002
** Adel I. Mirzazhanov. All rights reserved
**
** Redistribution and use in source and binary forms, with or without
@@ -29,24 +29,50 @@
#include <stdio.h>
#include <stdlib.h>
#include <strings.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/time.h>
#include "rnd.h"
#include "./cast/cast.h"
#ifndef APG_USE_SHA
# include "./cast/cast.h"
#else /* APG_USE_SHA */
# include "./sha/sha.h"
#endif /* APG_USE_SHA */
UINT32 __rnd_seed[2]; /* Random Seed 2*32=64 */
/*
** randint(int n) - Produces a Random number from 0 to n-1 .
** randint(int n) - Produces a Random number from 0 to n-1.
** INPUT:
** int - limit
** OUTPUT:
** UINT - pandom number.
** NOTES:
** none.
*/
UINT
randint(int n)
{
#ifndef APG_USE_SHA
return ( (UINT)( x917cast_rnd() % (UINT32)n ) );
#else /* APG_USE_SHA */
return ( (UINT)( x917sha1_rnd() % (UINT32)n ) );
#endif /* APG_USE_SHA */
}
#ifndef APG_USE_SHA
/*
** ANSI X9.17 pseudorandom generator that uses CAST algorithm instead of DES
** m = 1
** INPUT:
** none.
** OUTPUT:
** UINT32 - random number.
** NOTES:
** none.
*/
UINT32
x917cast_rnd (void)
@@ -79,16 +105,71 @@ u8 ro_key[16] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
cast_encrypt (&ky, (u8 *)&Xi_plus_I[0], (u8*)&__rnd_seed[0]); /* s=Ek( Xi (+) I ) */
return (Xi[0]);
}
#else /* APG_USE_SHA */
/*
** x917cast_setseed (UINT32 seed) - Initializes seed
** UINT32 seed - seed value
** ANSI X9.17 pseudorandom generator that uses SHA1 algorithm instead of DES
** m=1
** INPUT:
** none.
** OUTPUT:
** UINT32 - random number.
** NOTES:
** none.
*/
UINT32
x917sha1_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};
BYTE hash [SHA_DIGESTSIZE];
apg_SHA_INFO shaInfo;
(void) gettimeofday (&local_time, 0);
apg_shaInit ( &shaInfo );
apg_shaUpdate ( &shaInfo, (BYTE *)&local_time, 8);
apg_shaFinal ( &shaInfo, hash );
(void)memcpy ( (void *)&I[0], (void *)&hash[0], sizeof(I));
I_plus_s[0] = I[0] ^ __rnd_seed[0]; /* I0 (+) s0 */
I_plus_s[1] = I[1] ^ __rnd_seed[1]; /* I1 (+) s1 */
apg_shaInit(&shaInfo);
apg_shaUpdate( &shaInfo, (BYTE *)&I_plus_s, 8);
apg_shaFinal( &shaInfo, hash );
(void)memcpy ( (void *)&Xi[0], (void *)&hash[0], sizeof(Xi)); /* Xi=Ek( I (+) s ) */
Xi_plus_I[0] = Xi[0] ^ I[0]; /* Xi0 (+) I0 */
Xi_plus_I[1] = Xi[1] ^ I[1]; /* Xi1 (+) I1 */
apg_shaInit(&shaInfo);
apg_shaUpdate( &shaInfo, (BYTE *)&Xi_plus_I, 8);
apg_shaFinal(&shaInfo, hash);
(void)memcpy ( (void *)&__rnd_seed[0], (void *)&hash[0],
sizeof(__rnd_seed)); /* s=Ek( Xi (+) I ) */
return (Xi[0]);
}
#endif /* APG_USE_SHA */
/*
** x917_setseed (UINT32 seed) - Initializes seed
** INPUT:
** UINT32 - seed value
** int - quiet mode flag
** OUTPUT:
** none.
** NOTES:
** none.
*/
void
x917cast_setseed (UINT32 seed)
x917_setseed (UINT32 seed, int quiet)
{
FILE * dr;
UINT32 drs[2];
UINT32 pid = 0;
pid = (UINT32)getpid();
if ( (dr = fopen(APG_DEVRANDOM, "r")) != NULL)
{
@@ -107,11 +188,14 @@ x917cast_setseed (UINT32 seed)
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);
if (quiet != TRUE)
{
fprintf(stderr,"CAN NOT USE RANDOM DEVICE TO GENERATE RANDOM SEED\n");
fprintf(stderr,"USING LOCAL TIME AND PID FOR SEED GENERATION !!!\n");
fflush(stderr);
}
#endif /* CLISERV */
__rnd_seed[0] = seed;
__rnd_seed[1] = seed;
__rnd_seed[0] = seed ^ pid;
__rnd_seed[1] = seed ^ pid;
}
}