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