2 * Copyright (c) 1995, 1996, 1997 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * 3. Neither the name of the Institute nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 RCSID("$Id: encdata.c,v 1.10 1999/12/02 16:58:31 joda Exp $");
39 write_encrypted (int fd, void *buf, size_t len, des_key_schedule schedule,
40 des_cblock *session, struct sockaddr_in *me,
41 struct sockaddr_in *him)
48 outbuf = malloc(len + 30);
51 outlen = krb_mk_priv (buf, outbuf, len, schedule, session, me, him);
57 for(i = 3; i >= 0; i--, l = l >> 8)
59 if (krb_net_write (fd, tmp, 4) != 4 ||
60 krb_net_write (fd, outbuf, outlen) != outlen) {
71 read_encrypted (int fd, void *buf, size_t len, void **ret,
72 des_key_schedule schedule, des_cblock *session,
73 struct sockaddr_in *him, struct sockaddr_in *me)
80 l = krb_net_read (fd, tmp, 4);
83 l = (tmp[0] << 24) | (tmp[1] << 16) | (tmp[2] << 8) | tmp[3];
86 if (krb_net_read (fd, buf, l) != l)
88 status = krb_rd_priv (buf, l, schedule, session, him, me, &msg);
89 if (status != RD_AP_OK) {
90 fprintf (stderr, "read_encrypted: %s\n",
91 krb_get_err_text(status));
95 return msg.app_length;