diff options
Diffstat (limited to 'usr.bin/rlogin/des_rw.c')
| -rw-r--r-- | usr.bin/rlogin/des_rw.c | 203 |
1 files changed, 0 insertions, 203 deletions
diff --git a/usr.bin/rlogin/des_rw.c b/usr.bin/rlogin/des_rw.c deleted file mode 100644 index dbe47f0..0000000 --- a/usr.bin/rlogin/des_rw.c +++ /dev/null @@ -1,203 +0,0 @@ -/*- - * Copyright (c) 1989, 1993 - * The Regents of the University of California. 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. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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. - */ - -#ifndef lint -static char sccsid[] = "@(#)des_rw.c 8.1 (Berkeley) 6/6/93"; -#endif /* not lint */ - -#ifdef CRYPT -#ifdef KERBEROS -#include <sys/param.h> - -#include <kerberosIV/des.h> -#include <kerberosIV/krb.h> - -#include <stdlib.h> -#include <string.h> -#include <time.h> -#include <unistd.h> - -static unsigned char des_inbuf[10240], storage[10240], *store_ptr; -static bit_64 *key; -static u_char *key_schedule; - -/* XXX these should be in a kerberos include file */ -int krb_net_read __P((int, char *, int)); -#ifdef notdef -/* XXX too hard to make this work */ -int des_pcbc_encrypt __P((des_cblock *, des_cblock *, long, - des_key_schedule, des_cblock *, int)); -#endif - -/* - * NB: These routines will not function properly if NBIO - * is set - */ - -/* - * des_set_key - * - * Set des encryption/decryption key for use by the des_read and - * des_write routines - * - * The inkey parameter is actually the DES initial vector, - * and the insched is the DES Key unwrapped for faster decryption - */ - -void -des_set_key(inkey, insched) - bit_64 *inkey; - u_char *insched; -{ - key = inkey; - key_schedule = insched; -} - -void -des_clear_key() -{ - bzero((char *) key, sizeof(C_Block)); - bzero((char *) key_schedule, sizeof(Key_schedule)); -} - - -int -des_read(fd, buf, len) - int fd; - register char *buf; - int len; -{ - int nreturned = 0; - long net_len, rd_len; - int nstored = 0; - - if (nstored >= len) { - (void) bcopy(store_ptr, buf, len); - store_ptr += len; - nstored -= len; - return(len); - } else if (nstored) { - (void) bcopy(store_ptr, buf, nstored); - nreturned += nstored; - buf += nstored; - len -= nstored; - nstored = 0; - } - - if (krb_net_read(fd, (char *)&net_len, sizeof(net_len)) != - sizeof(net_len)) { - /* XXX can't read enough, pipe - must have closed */ - return(0); - } - net_len = ntohl(net_len); - if (net_len <= 0 || net_len > sizeof(des_inbuf)) { - /* preposterous length; assume out-of-sync; only - recourse is to close connection, so return 0 */ - return(0); - } - /* the writer tells us how much real data we are getting, but - we need to read the pad bytes (8-byte boundary) */ - rd_len = roundup(net_len, 8); - if (krb_net_read(fd, (char *)des_inbuf, rd_len) != rd_len) { - /* pipe must have closed, return 0 */ - return(0); - } - (void) des_pcbc_encrypt(des_inbuf, /* inbuf */ - storage, /* outbuf */ - net_len, /* length */ - key_schedule, /* DES key */ - key, /* IV */ - DECRYPT); /* direction */ - - if(net_len < 8) - store_ptr = storage + 8 - net_len; - else - store_ptr = storage; - - nstored = net_len; - if (nstored > len) { - (void) bcopy(store_ptr, buf, len); - nreturned += len; - store_ptr += len; - nstored -= len; - } else { - (void) bcopy(store_ptr, buf, nstored); - nreturned += nstored; - nstored = 0; - } - - return(nreturned); -} - -static unsigned char des_outbuf[10240]; /* > longest write */ - -int -des_write(fd, buf, len) - int fd; - char *buf; - int len; -{ - static int seeded = 0; - static char garbage_buf[8]; - long net_len, garbage; - - if(len < 8) { - if(!seeded) { - seeded = 1; - srandom((int) time((long *)0)); - } - garbage = random(); - /* insert random garbage */ - (void) bcopy(&garbage, garbage_buf, MIN(sizeof(long),8)); - /* this "right-justifies" the data in the buffer */ - (void) bcopy(buf, garbage_buf + 8 - len, len); - } - /* pcbc_encrypt outputs in 8-byte (64 bit) increments */ - - (void) des_pcbc_encrypt((len < 8) ? garbage_buf : buf, - des_outbuf, - (len < 8) ? 8 : len, - key_schedule, /* DES key */ - key, /* IV */ - ENCRYPT); - - /* tell the other end the real amount, but send an 8-byte padded - packet */ - net_len = htonl(len); - (void) write(fd, &net_len, sizeof(net_len)); - (void) write(fd, des_outbuf, roundup(len,8)); - return(len); -} -#endif /* KERBEROS */ -#endif /* CRYPT */ |
