95 lines
2 KiB
C
95 lines
2 KiB
C
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/*
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genauth.c -- generate a random passphrase
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Copyright (C) 1998,99 Ivo Timmermans <zarq@iname.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "config.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <time.h>
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#include <xalloc.h>
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#include "encr.h"
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unsigned char initvec[] = { 0x22, 0x7b, 0xad, 0x55, 0x41, 0xf4, 0x3e, 0xf3 };
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int main(int argc, char **argv)
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{
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FILE *fp;
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int bits, c, i, bytes;
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unsigned char *p;
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if(argc != 2)
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{
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fprintf(stderr, "Usage: %s bits\n", argv[0]);
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return 1;
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}
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if(!(bits = atol(argv[1])))
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{
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fprintf(stderr, "Illegal number: %s\n", argv[1]);
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return 1;
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}
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bits = ((bits - 1) | 63) + 1;
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fprintf(stderr, "Generating %d bits number", bits);
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bytes = bits >> 3;
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if((fp = fopen("/dev/urandom", "r")) == NULL)
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{
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perror("Opening /dev/urandom");
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return 1;
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}
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p = xmalloc(bytes);
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setbuf(stdout, NULL);
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for(i = 0; i < 128; i++)
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{
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c = fgetc(fp);
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if(feof(fp))
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{
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puts("");
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fprintf(stderr, "File was empty!\n");
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}
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p[i] = c;
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}
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for(i = 0; i < (bytes); i++)
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{
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c = fgetc(fp);
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if(feof(fp))
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{
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puts("");
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fprintf(stderr, "File was empty!\n");
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}
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p[i] = c;
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}
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fclose(fp);
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printf("%d ", bits);
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for(i = 0; i < bytes; i++)
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printf("%02x", p[i]);
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puts("");
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return 0;
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}
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