File: [local] / src / usr.bin / tcfs / Attic / gentcfskey.c (download)
Revision 1.1.1.1 (vendor branch), Sun Jun 18 22:07:24 2000 UTC (23 years, 11 months ago) by provos
Branch: PROVOS001
CVS Tags: TCFS00 Changes since 1.1: +0 -0 lines
Initial import of very much rewritten TCFS userland. This code is still
nasty.
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/*
* Transparent Cryptographic File System (TCFS) for NetBSD
* Author and mantainer: Luigi Catuogno [luicat@tcfs.unisa.it]
*
* references: http://tcfs.dia.unisa.it
* tcfs-bsd@tcfs.unisa.it
*/
/*
* Base utility set v0.1
*/
#include <stdio.h>
#include <sys/time.h>
#include <termios.h>
#include <unistd.h>
#include <stdlib.h>
#include <fcntl.h>
#include <err.h>
#include <md5.h>
#include <miscfs/tcfs/tcfs.h>
#include "tcfsdefines.h"
u_char *
gentcfskey (void)
{
u_char *buff;
MD5_CTX ctx, ctx2;
u_int32_t tmp[KEYSIZE];
u_char digest[16];
int i;
buff = (u_char *)calloc(KEYSIZE + 1, sizeof(char));
/* Generate random key */
for (i = 0; i < KEYSIZE; i ++)
tmp[i] = arc4random();
MD5Init(&ctx);
for (i = 0; i < KEYSIZE; i += 16) {
MD5Update(&ctx, (u_char *)tmp, sizeof(tmp));
ctx2 = ctx;
MD5Final(digest, &ctx2);
memcpy(buff + i, digest, KEYSIZE - i > 16 ? 16 : KEYSIZE - i);
}
buff[KEYSIZE] = '\0';
memset(&ctx, 0, sizeof(ctx));
return (buff);
}