1 /*
2 * Copyright 2002-2020 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10 /*
11 * NB: This file contains deprecated functions (compatibility wrappers to the
12 * "new" versions).
13 */
14
15 /*
16 * RSA low level APIs are deprecated for public use, but still ok for
17 * internal use.
18 */
19 #include "internal/deprecated.h"
20
21 #include <openssl/opensslconf.h>
22
23 #include <stdio.h>
24 #include <time.h>
25 #include "internal/cryptlib.h"
26 #include <openssl/bn.h>
27 #include <openssl/rsa.h>
28
RSA_generate_key(int bits,unsigned long e_value,void (* callback)(int,int,void *),void * cb_arg)29 RSA *RSA_generate_key(int bits, unsigned long e_value,
30 void (*callback) (int, int, void *), void *cb_arg)
31 {
32 int i;
33 BN_GENCB *cb = BN_GENCB_new();
34 RSA *rsa = RSA_new();
35 BIGNUM *e = BN_new();
36
37 if (cb == NULL || rsa == NULL || e == NULL)
38 goto err;
39
40 /*
41 * The problem is when building with 8, 16, or 32 BN_ULONG, unsigned long
42 * can be larger
43 */
44 for (i = 0; i < (int)sizeof(unsigned long) * 8; i++) {
45 if (e_value & (1UL << i))
46 if (BN_set_bit(e, i) == 0)
47 goto err;
48 }
49
50 BN_GENCB_set_old(cb, callback, cb_arg);
51
52 if (RSA_generate_key_ex(rsa, bits, e, cb)) {
53 BN_free(e);
54 BN_GENCB_free(cb);
55 return rsa;
56 }
57 err:
58 BN_free(e);
59 RSA_free(rsa);
60 BN_GENCB_free(cb);
61 return 0;
62 }
63