03656ac1b0
the "core" Kerberos functionality. The rest of the userland will get their own changes later.
118 lines
3.8 KiB
C
118 lines
3.8 KiB
C
/*
|
|
* Copyright (c) 1995, 1996, 1997 Kungliga Tekniska Högskolan
|
|
* (Royal Institute of Technology, Stockholm, Sweden).
|
|
* 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 Kungliga Tekniska
|
|
* Högskolan and its contributors.
|
|
*
|
|
* 4. Neither the name of the Institute 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 INSTITUTE 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 INSTITUTE 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.
|
|
*/
|
|
|
|
#include "krb_locl.h"
|
|
|
|
RCSID("$Id: create_ciph.c,v 1.9 1997/04/01 08:18:20 joda Exp $");
|
|
|
|
/*
|
|
* This routine is used by the authentication server to create
|
|
* a packet for its client, containing a ticket for the requested
|
|
* service (given in "tkt"), and some information about the ticket,
|
|
*
|
|
* Returns KSUCCESS no matter what.
|
|
*
|
|
* The length of the cipher is stored in c->length; the format of
|
|
* c->dat is as follows:
|
|
*
|
|
* variable
|
|
* type or constant data
|
|
* ---- ----------- ----
|
|
*
|
|
*
|
|
* 8 bytes session session key for client, service
|
|
*
|
|
* string service service name
|
|
*
|
|
* string instance service instance
|
|
*
|
|
* string realm KDC realm
|
|
*
|
|
* unsigned char life ticket lifetime
|
|
*
|
|
* unsigned char kvno service key version number
|
|
*
|
|
* unsigned char tkt->length length of following ticket
|
|
*
|
|
* data tkt->dat ticket for service
|
|
*
|
|
* 4 bytes kdc_time KDC's timestamp
|
|
*
|
|
* <=7 bytes null null pad to 8 byte multiple
|
|
*
|
|
*/
|
|
|
|
int
|
|
create_ciph(KTEXT c, /* Text block to hold ciphertext */
|
|
unsigned char *session, /* Session key to send to user */
|
|
char *service, /* Service name on ticket */
|
|
char *instance, /* Instance name on ticket */
|
|
char *realm, /* Realm of this KDC */
|
|
u_int32_t life, /* Lifetime of the ticket */
|
|
int kvno, /* Key version number for service */
|
|
KTEXT tkt, /* The ticket for the service */
|
|
u_int32_t kdc_time, /* KDC time */
|
|
des_cblock *key) /* Key to encrypt ciphertext with */
|
|
|
|
{
|
|
unsigned char *p = c->dat;
|
|
|
|
memset(c, 0, sizeof(KTEXT_ST));
|
|
|
|
memcpy(p, session, 8);
|
|
p += 8;
|
|
|
|
p += krb_put_nir(service, instance, realm, p);
|
|
|
|
p += krb_put_int(life, p, 1);
|
|
p += krb_put_int(kvno, p, 1);
|
|
|
|
p += krb_put_int(tkt->length, p, 1);
|
|
|
|
memcpy(p, tkt->dat, tkt->length);
|
|
p += tkt->length;
|
|
|
|
p += krb_put_int(kdc_time, p, 4);
|
|
|
|
/* multiple of eight bytes */
|
|
c->length = (p - c->dat + 7) & ~7;
|
|
|
|
encrypt_ktext(c, key, DES_ENCRYPT);
|
|
return KSUCCESS;
|
|
}
|