105186eeee
(Including all changes for FreeBSD - importing the original eBones distribution would be too complex at this stage, since I don't have access to Piero's CVS.) (If you want to include eBones in your system, don't forget to include MAKE_EBONES in /etc/make.conf.) (This stuff is now also suppable from braae.ru.ac.za.) Bones originally from MIT SIPB. Original port to FreeBSD 1.x by Piero Serini. Moved to FreeBSD 2.0 by Doug Rabson and Geoff Rehmet. Nice bug fixes from Doug Rabson.
110 lines
2.9 KiB
C
110 lines
2.9 KiB
C
/*
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* Copyright 1986, 1987, 1988 by the Massachusetts Institute
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* of Technology.
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* For copying and distribution information, please see the file
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* <Copyright.MIT>.
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*
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* from: create_ciph.c,v 4.8 89/05/18 21:24:26 jis Exp $
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* $Id: create_ciph.c,v 1.2 1994/07/19 19:24:58 g89r4222 Exp $
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*/
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#ifndef lint
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static char *rcsid =
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"$Id: create_ciph.c,v 1.2 1994/07/19 19:24:58 g89r4222 Exp $";
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#endif /* lint */
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#include <krb.h>
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#include <des.h>
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#include <strings.h>
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/*
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* This routine is used by the authentication server to create
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* a packet for its client, containing a ticket for the requested
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* service (given in "tkt"), and some information about the ticket,
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*
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* Returns KSUCCESS no matter what.
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*
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* The length of the cipher is stored in c->length; the format of
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* c->dat is as follows:
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*
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* variable
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* type or constant data
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* ---- ----------- ----
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*
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*
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* 8 bytes session session key for client, service
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*
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* string service service name
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*
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* string instance service instance
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*
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* string realm KDC realm
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*
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* unsigned char life ticket lifetime
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*
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* unsigned char kvno service key version number
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*
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* unsigned char tkt->length length of following ticket
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*
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* data tkt->dat ticket for service
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*
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* 4 bytes kdc_time KDC's timestamp
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*
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* <=7 bytes null null pad to 8 byte multiple
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*
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*/
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create_ciph(c, session, service, instance, realm, life, kvno, tkt,
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kdc_time, key)
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KTEXT c; /* Text block to hold ciphertext */
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C_Block session; /* Session key to send to user */
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char *service; /* Service name on ticket */
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char *instance; /* Instance name on ticket */
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char *realm; /* Realm of this KDC */
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unsigned long life; /* Lifetime of the ticket */
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int kvno; /* Key version number for service */
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KTEXT tkt; /* The ticket for the service */
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unsigned long kdc_time; /* KDC time */
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C_Block key; /* Key to encrypt ciphertext with */
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{
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char *ptr;
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Key_schedule key_s;
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ptr = (char *) c->dat;
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bcopy((char *) session, ptr, 8);
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ptr += 8;
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(void) strcpy(ptr,service);
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ptr += strlen(service) + 1;
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(void) strcpy(ptr,instance);
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ptr += strlen(instance) + 1;
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(void) strcpy(ptr,realm);
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ptr += strlen(realm) + 1;
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*(ptr++) = (unsigned char) life;
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*(ptr++) = (unsigned char) kvno;
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*(ptr++) = (unsigned char) tkt->length;
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bcopy((char *)(tkt->dat),ptr,tkt->length);
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ptr += tkt->length;
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bcopy((char *) &kdc_time,ptr,4);
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ptr += 4;
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/* guarantee null padded encrypted data to multiple of 8 bytes */
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bzero(ptr, 7);
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c->length = (((ptr - (char *) c->dat) + 7) / 8) * 8;
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#ifndef NOENCRYPTION
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key_sched(key,key_s);
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pcbc_encrypt((C_Block *)c->dat,(C_Block *)c->dat,(long) c->length,key_s,
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key,ENCRYPT);
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#endif /* NOENCRYPTION */
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return(KSUCCESS);
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}
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