1 /* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
2 /* lib/krb5/krb/enc_keyhelper.c */
3 /*
4 * Copyright (C) 1998 by the FundsXpress, INC.
5 *
6 * All rights reserved.
7 *
8 * Export of this software from the United States of America may require
9 * a specific license from the United States Government. It is the
10 * responsibility of any person or organization contemplating export to
11 * 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 FundsXpress. not be used in advertising or publicity pertaining
19 * to distribution of the software without specific, written prior
20 * permission. FundsXpress makes no representations about the suitability of
21 * this software for any purpose. It is provided "as is" without express
22 * or implied warranty.
23 *
24 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
25 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
26 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
27 */
28
29 #include "k5-int.h"
30 #include "int-proto.h"
31
32 krb5_error_code
k5_encrypt_keyhelper(krb5_context context,krb5_key key,krb5_keyusage usage,const krb5_data * plain,krb5_enc_data * cipher)33 k5_encrypt_keyhelper(krb5_context context, krb5_key key, krb5_keyusage usage,
34 const krb5_data *plain, krb5_enc_data *cipher)
35 {
36 krb5_enctype enctype;
37 krb5_error_code ret;
38 size_t enclen;
39
40 enctype = krb5_k_key_enctype(context, key);
41 ret = krb5_c_encrypt_length(context, enctype, plain->length, &enclen);
42 if (ret != 0)
43 return ret;
44
45 cipher->ciphertext.length = enclen;
46 cipher->ciphertext.data = malloc(enclen);
47 if (cipher->ciphertext.data == NULL)
48 return ENOMEM;
49 ret = krb5_k_encrypt(context, key, usage, 0, plain, cipher);
50 if (ret) {
51 free(cipher->ciphertext.data);
52 cipher->ciphertext.data = NULL;
53 }
54
55 return ret;
56 }
57