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Diffstat (limited to '')
| -rw-r--r-- | cipher/rand-dummy.c | 134 |
1 files changed, 0 insertions, 134 deletions
diff --git a/cipher/rand-dummy.c b/cipher/rand-dummy.c deleted file mode 100644 index 093108b06..000000000 --- a/cipher/rand-dummy.c +++ /dev/null @@ -1,134 +0,0 @@ -/* rand-dummy.c - INSECURE dummy random device - * Copyright (C) 1998 Free Software Foundation, Inc. - * - * This file is part of GNUPG. - * - * GNUPG is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * GNUPG is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA - */ - - -#include <config.h> -#include <stdio.h> -#include <stdlib.h> -#include <assert.h> -#include <errno.h> -#include <sys/time.h> -#include <sys/types.h> -#include <sys/stat.h> -#ifdef HAVE_GETHRTIME - #include <sys/times.h> -#endif -#ifdef HAVE_GETTIMEOFDAY - #include <sys/times.h> -#endif -#ifdef HAVE_GETRUSAGE - #include <sys/resource.h> -#endif -#include <string.h> -#include <unistd.h> -#ifdef __MINGW32__ - #include <process.h> -#endif -#include <fcntl.h> -#include "util.h" -#include "ttyio.h" -#include "i18n.h" -#include "rand-internal.h" -#ifdef USE_RAND_DUMMY /* a dummy random file so we can do some tests */ - - -#ifndef RAND_MAX /* for SunOS */ - #define RAND_MAX 32767 -#endif - -#if __GNUC__ - #warning Using the insecure dummy random device -#endif - -void -random_poll() -{ - char buf[POOLSIZE/5]; - read_random_source( buf, POOLSIZE/5, 1 ); /* read dummy data */ - add_randomness( buf, POOLSIZE/5, 2); - memset( buf, 0, POOLSIZE/5); -} - - -void -fast_random_poll() -{ - #if HAVE_GETHRTIME - { hrtime_t tv; - tv = gethrtime(); - add_randomness( &tv, sizeof(tv), 1 ); - } - #elif HAVE_GETTIMEOFDAY - { struct timeval tv; - if( gettimeofday( &tv, NULL ) ) - BUG(); - add_randomness( &tv.tv_sec, sizeof(tv.tv_sec), 1 ); - add_randomness( &tv.tv_usec, sizeof(tv.tv_usec), 1 ); - } - #else /* use times */ - { - #ifndef __MINGW32__ - struct tms buf; - times( &buf ); - add_randomness( &buf, sizeof buf, 1 ); - #endif - } - #endif - #ifdef HAVE_GETRUSAGE - { struct rusage buf; - if( getrusage( RUSAGE_SELF, &buf ) ) - BUG(); - add_randomness( &buf, sizeof buf, 1 ); - memset( &buf, 0, sizeof buf ); - } - #endif -} - - - -void -read_random_source( byte *buffer, size_t length, int level ) -{ - static int initialized=0; - - if( !initialized ) { - log_info(_("WARNING: using insecure random number generator!!\n")); - tty_printf(_("The random number generator is only a kludge to let\n" - "it compile - it is in no way a strong RNG!\n\n" - "DON'T USE ANY DATA GENERATED BY THIS PROGRAM!!\n\n")); - initialized=1; - #ifdef HAVE_RAND - srand(make_timestamp()*getpid()); - #else - srandom(make_timestamp()*getpid()); - #endif - } - - #ifdef HAVE_RAND - while( length-- ) - *buffer++ = ((unsigned)(1 + (int) (256.0*rand()/(RAND_MAX+1.0)))-1); - #else - while( length-- ) - *buffer++ = ((unsigned)(1 + (int) (256.0*random()/(RAND_MAX+1.0)))-1); - #endif -} - - -#endif /* USE_RAND_DUMMY */ |