1 #pragma ident "%Z%%M% %I% %E% SMI" 2 /* 3 * lib/krb5/krb/encrypt_tk.c 4 * 5 * Copyright 1990 by the Massachusetts Institute of Technology. 6 * All Rights Reserved. 7 * 8 * Export of this software from the United States of America may 9 * require a specific license from the United States Government. 10 * It is the responsibility of any person or organization contemplating 11 * export to obtain such a license before exporting. 12 * 13 * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and 14 * distribute this software and its documentation for any purpose and 15 * without fee is hereby granted, provided that the above copyright 16 * notice appear in all copies and that both that copyright notice and 17 * this permission notice appear in supporting documentation, and that 18 * the name of M.I.T. not be used in advertising or publicity pertaining 19 * to distribution of the software without specific, written prior 20 * permission. Furthermore if you modify this software you must label 21 * your software as modified software and not distribute it in such a 22 * fashion that it might be confused with the original M.I.T. software. 23 * M.I.T. makes no representations about the suitability of 24 * this software for any purpose. It is provided "as is" without express 25 * or implied warranty. 26 * 27 * 28 * krb5_encrypt_tkt_part() routine. 29 */ 30 31 #include "k5-int.h" 32 33 /* 34 Takes unencrypted dec_ticket & dec_tkt_part, encrypts with 35 dec_ticket->enc_part.etype 36 using *srv_key, and places result in dec_ticket->enc_part. 37 The string dec_ticket->enc_part.ciphertext will be allocated before 38 formatting. 39 40 returns errors from encryption routines, system errors 41 42 enc_part->ciphertext.data allocated & filled in with encrypted stuff 43 */ 44 45 krb5_error_code 46 krb5_encrypt_tkt_part(krb5_context context, const krb5_keyblock *srv_key, register krb5_ticket *dec_ticket) 47 { 48 krb5_data *scratch; 49 krb5_error_code retval; 50 register krb5_enc_tkt_part *dec_tkt_part = dec_ticket->enc_part2; 51 52 /* start by encoding the to-be-encrypted part. */ 53 if ((retval = encode_krb5_enc_tkt_part(dec_tkt_part, &scratch))) { 54 return retval; 55 } 56 57 #define cleanup_scratch() { (void) memset(scratch->data, 0, scratch->length); \ 58 krb5_free_data(context, scratch); } 59 60 /* call the encryption routine */ 61 retval = krb5_encrypt_helper(context, srv_key, 62 KRB5_KEYUSAGE_KDC_REP_TICKET, scratch, 63 &dec_ticket->enc_part); 64 65 cleanup_scratch(); 66 67 return(retval); 68 } 69