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/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/* lib/krb5/krb/kdc_rep_dc.c */
/*
* Copyright 1990 by the Massachusetts Institute of Technology.
* All Rights Reserved.
*
* Export of this software from the United States of America may
* require a specific license from the United States Government.
* It is the responsibility of any person or organization contemplating
* export to obtain such a license before exporting.
*
* WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
* distribute this software and its documentation for any purpose and
* without fee is hereby granted, provided that the above copyright
* notice appear in all copies and that both that copyright notice and
* this permission notice appear in supporting documentation, and that
* the name of M.I.T. not be used in advertising or publicity pertaining
* to distribution of the software without specific, written prior
* permission. Furthermore if you modify this software you must label
* your software as modified software and not distribute it in such a
* fashion that it might be confused with the original M.I.T. software.
* M.I.T. makes no representations about the suitability of
* this software for any purpose. It is provided "as is" without express
* or implied warranty.
*/
#include "k5-int.h"
/*
* Decrypt the encrypted portion of the KDC_REP message, using the key
* passed.
*
*/
/*ARGSUSED*/
krb5_error_code
krb5_kdc_rep_decrypt_proc(krb5_context context, const krb5_keyblock *key, krb5_const_pointer decryptarg, krb5_kdc_rep *dec_rep)
{
krb5_error_code retval;
krb5_data scratch;
krb5_enc_kdc_rep_part *local_encpart;
krb5_keyusage usage;
if (decryptarg) {
usage = *(const krb5_keyusage *) decryptarg;
} else {
usage = KRB5_KEYUSAGE_AS_REP_ENCPART;
}
/* set up scratch decrypt/decode area */
scratch.length = dec_rep->enc_part.ciphertext.length;
if (!(scratch.data = malloc(dec_rep->enc_part.ciphertext.length))) {
return(ENOMEM);
}
/*dec_rep->enc_part.enctype;*/
if ((retval = krb5_c_decrypt(context, key, usage, 0, &dec_rep->enc_part,
&scratch))) {
free(scratch.data);
return(retval);
}
#define clean_scratch() {memset(scratch.data, 0, scratch.length); \
free(scratch.data);}
/* and do the decode */
retval = decode_krb5_enc_kdc_rep_part(&scratch, &local_encpart);
clean_scratch();
if (retval)
return retval;
dec_rep->enc_part2 = local_encpart;
return 0;
}
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