17c478bd9Sstevel@tonic-gate /*
27c478bd9Sstevel@tonic-gate * lib/krb5/krb/kdc_rep_dc.c
37c478bd9Sstevel@tonic-gate *
47c478bd9Sstevel@tonic-gate * Copyright 1990 by the Massachusetts Institute of Technology.
57c478bd9Sstevel@tonic-gate * All Rights Reserved.
67c478bd9Sstevel@tonic-gate *
77c478bd9Sstevel@tonic-gate * Export of this software from the United States of America may
87c478bd9Sstevel@tonic-gate * require a specific license from the United States Government.
97c478bd9Sstevel@tonic-gate * It is the responsibility of any person or organization contemplating
107c478bd9Sstevel@tonic-gate * export to obtain such a license before exporting.
117c478bd9Sstevel@tonic-gate *
127c478bd9Sstevel@tonic-gate * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
137c478bd9Sstevel@tonic-gate * distribute this software and its documentation for any purpose and
147c478bd9Sstevel@tonic-gate * without fee is hereby granted, provided that the above copyright
157c478bd9Sstevel@tonic-gate * notice appear in all copies and that both that copyright notice and
167c478bd9Sstevel@tonic-gate * this permission notice appear in supporting documentation, and that
177c478bd9Sstevel@tonic-gate * the name of M.I.T. not be used in advertising or publicity pertaining
187c478bd9Sstevel@tonic-gate * to distribution of the software without specific, written prior
197c478bd9Sstevel@tonic-gate * permission. Furthermore if you modify this software you must label
207c478bd9Sstevel@tonic-gate * your software as modified software and not distribute it in such a
217c478bd9Sstevel@tonic-gate * fashion that it might be confused with the original M.I.T. software.
227c478bd9Sstevel@tonic-gate * M.I.T. makes no representations about the suitability of
237c478bd9Sstevel@tonic-gate * this software for any purpose. It is provided "as is" without express
247c478bd9Sstevel@tonic-gate * or implied warranty.
257c478bd9Sstevel@tonic-gate *
267c478bd9Sstevel@tonic-gate *
277c478bd9Sstevel@tonic-gate * krb5_kdc_rep_decrypt_proc()
287c478bd9Sstevel@tonic-gate */
297c478bd9Sstevel@tonic-gate
30*159d09a2SMark Phalan #include "k5-int.h"
317c478bd9Sstevel@tonic-gate
327c478bd9Sstevel@tonic-gate /*
337c478bd9Sstevel@tonic-gate * Decrypt the encrypted portion of the KDC_REP message, using the key
347c478bd9Sstevel@tonic-gate * passed.
357c478bd9Sstevel@tonic-gate *
367c478bd9Sstevel@tonic-gate */
377c478bd9Sstevel@tonic-gate
387c478bd9Sstevel@tonic-gate /*ARGSUSED*/
397c478bd9Sstevel@tonic-gate krb5_error_code
krb5_kdc_rep_decrypt_proc(krb5_context context,const krb5_keyblock * key,krb5_const_pointer decryptarg,krb5_kdc_rep * dec_rep)40505d05c7Sgtb krb5_kdc_rep_decrypt_proc(krb5_context context, const krb5_keyblock *key, krb5_const_pointer decryptarg, krb5_kdc_rep *dec_rep)
417c478bd9Sstevel@tonic-gate {
427c478bd9Sstevel@tonic-gate krb5_error_code retval;
437c478bd9Sstevel@tonic-gate krb5_data scratch;
447c478bd9Sstevel@tonic-gate krb5_enc_kdc_rep_part *local_encpart;
457c478bd9Sstevel@tonic-gate krb5_keyusage usage;
467c478bd9Sstevel@tonic-gate
477c478bd9Sstevel@tonic-gate if (decryptarg) {
487c478bd9Sstevel@tonic-gate usage = *(const krb5_keyusage *) decryptarg;
497c478bd9Sstevel@tonic-gate } else {
507c478bd9Sstevel@tonic-gate usage = KRB5_KEYUSAGE_AS_REP_ENCPART;
517c478bd9Sstevel@tonic-gate }
527c478bd9Sstevel@tonic-gate
537c478bd9Sstevel@tonic-gate /* set up scratch decrypt/decode area */
547c478bd9Sstevel@tonic-gate
557c478bd9Sstevel@tonic-gate scratch.length = dec_rep->enc_part.ciphertext.length;
567c478bd9Sstevel@tonic-gate if (!(scratch.data = malloc(dec_rep->enc_part.ciphertext.length))) {
577c478bd9Sstevel@tonic-gate return(ENOMEM);
587c478bd9Sstevel@tonic-gate }
597c478bd9Sstevel@tonic-gate
60*159d09a2SMark Phalan /*dec_rep->enc_part.enctype;*/
617c478bd9Sstevel@tonic-gate
62*159d09a2SMark Phalan if ((retval = krb5_c_decrypt(context, key, usage, 0, &dec_rep->enc_part,
63*159d09a2SMark Phalan &scratch))) {
647c478bd9Sstevel@tonic-gate free(scratch.data);
657c478bd9Sstevel@tonic-gate return(retval);
667c478bd9Sstevel@tonic-gate }
677c478bd9Sstevel@tonic-gate
687c478bd9Sstevel@tonic-gate #define clean_scratch() {memset(scratch.data, 0, scratch.length); \
697c478bd9Sstevel@tonic-gate free(scratch.data);}
707c478bd9Sstevel@tonic-gate
717c478bd9Sstevel@tonic-gate /* and do the decode */
727c478bd9Sstevel@tonic-gate retval = decode_krb5_enc_kdc_rep_part(&scratch, &local_encpart);
737c478bd9Sstevel@tonic-gate clean_scratch();
747c478bd9Sstevel@tonic-gate if (retval)
757c478bd9Sstevel@tonic-gate return retval;
767c478bd9Sstevel@tonic-gate
777c478bd9Sstevel@tonic-gate dec_rep->enc_part2 = local_encpart;
787c478bd9Sstevel@tonic-gate
797c478bd9Sstevel@tonic-gate return 0;
807c478bd9Sstevel@tonic-gate }
81