1 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
4 * This package is an SSL implementation written
5 * by Eric Young (eay@cryptsoft.com).
6 * The implementation was written so as to conform with Netscapes SSL.
8 * This library is free for commercial and non-commercial use as long as
9 * the following conditions are aheared to. The following conditions
10 * apply to all code found in this distribution, be it the RC4, RSA,
11 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
12 * included with this distribution is covered by the same copyright terms
13 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 * Copyright remains Eric Young's, and as such any Copyright notices in
16 * the code are not to be removed.
17 * If this package is used in a product, Eric Young should be given attribution
18 * as the author of the parts of the library used.
19 * This can be in the form of a textual message at program startup or
20 * in documentation (online or textual) provided with the package.
22 * Redistribution and use in source and binary forms, with or without
23 * modification, are permitted provided that the following conditions
25 * 1. Redistributions of source code must retain the copyright
26 * notice, this list of conditions and the following disclaimer.
27 * 2. Redistributions in binary form must reproduce the above copyright
28 * notice, this list of conditions and the following disclaimer in the
29 * documentation and/or other materials provided with the distribution.
30 * 3. All advertising materials mentioning features or use of this software
31 * must display the following acknowledgement:
32 * "This product includes cryptographic software written by
33 * Eric Young (eay@cryptsoft.com)"
34 * The word 'cryptographic' can be left out if the rouines from the library
35 * being used are not cryptographic related :-).
36 * 4. If you include any Windows specific code (or a derivative thereof) from
37 * the apps directory (application code) you must include an acknowledgement:
38 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
52 * The licence and distribution terms for any publically available version or
53 * derivative of this code cannot be changed. i.e. this code cannot simply be
54 * copied and put under another distribution licence
55 * [including the GNU Public Licence.]
58 #include <openssl/opensslconf.h>
60 #ifndef OPENSSL_NO_RSA
63 # include <sys/types.h>
64 # include <sys/stat.h>
66 # include <openssl/bio.h>
67 # include <openssl/err.h>
68 # include <openssl/bn.h>
69 # include <openssl/rsa.h>
70 # include <openssl/evp.h>
71 # include <openssl/x509.h>
72 # include <openssl/pem.h>
73 # include <openssl/rand.h>
77 static int genrsa_cb(int p, int n, BN_GENCB *cb);
79 typedef enum OPTION_choice {
80 OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
81 OPT_3, OPT_F4, OPT_NON_FIPS_ALLOW, OPT_ENGINE,
82 OPT_OUT, OPT_RAND, OPT_PASSOUT, OPT_CIPHER
85 OPTIONS genrsa_options[] = {
86 {"help", OPT_HELP, '-', "Display this summary"},
87 {"3", OPT_3, '-', "Use 3 for the E value"},
88 {"F4", OPT_F4, '-', "Use F4 (0x10001) for the E value"},
89 {"f4", OPT_F4, '-', "Use F4 (0x10001) for the E value"},
90 {"non-fips-allow", OPT_NON_FIPS_ALLOW, '-'},
91 {"out", OPT_OUT, 's', "Output the key to specified file"},
92 {"rand", OPT_RAND, 's',
93 "Load the file(s) into the random number generator"},
94 {"passout", OPT_PASSOUT, 's', "Output file pass phrase source"},
95 {"", OPT_CIPHER, '-', "Encrypt the output with any supported cipher"},
96 # ifndef OPENSSL_NO_ENGINE
97 {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
102 int genrsa_main(int argc, char **argv)
104 BN_GENCB *cb = BN_GENCB_new();
107 BIGNUM *bn = BN_new();
110 const EVP_CIPHER *enc = NULL;
111 int ret = 1, non_fips_allow = 0, num = DEFBITS, private = 0;
112 unsigned long f4 = RSA_F4;
113 char *outfile = NULL, *passoutarg = NULL, *passout = NULL;
114 char *inrand = NULL, *prog, *hexe, *dece;
120 BN_GENCB_set(cb, genrsa_cb, bio_err);
122 prog = opt_init(argc, argv, genrsa_options);
123 while ((o = opt_next()) != OPT_EOF) {
127 BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
131 opt_help(genrsa_options);
139 case OPT_NON_FIPS_ALLOW:
146 e = setup_engine(opt_arg(), 0);
152 passoutarg = opt_arg();
155 if (!opt_cipher(opt_unknown(), &enc))
160 argc = opt_num_rest();
164 if (argv[0] && (!opt_int(argv[0], &num) || num <= 0))
167 if (!app_passwd(NULL, passoutarg, NULL, &passout)) {
168 BIO_printf(bio_err, "Error getting password\n");
172 out = bio_open_owner(outfile, FORMAT_PEM, private);
176 if (!app_RAND_load_file(NULL, 1) && inrand == NULL
179 "warning, not much extra random data, consider using the -rand option\n");
182 BIO_printf(bio_err, "%ld semi-random bytes loaded\n",
183 app_RAND_load_files(inrand));
185 BIO_printf(bio_err, "Generating RSA private key, %d bit long modulus\n",
187 rsa = e ? RSA_new_method(e) : RSA_new();
192 rsa->flags |= RSA_FLAG_NON_FIPS_ALLOW;
194 if (!BN_set_word(bn, f4) || !RSA_generate_key_ex(rsa, num, bn, cb))
197 app_RAND_write_file(NULL);
199 hexe = BN_bn2hex(rsa->e);
200 dece = BN_bn2dec(rsa->e);
202 BIO_printf(bio_err, "e is %s (0x%s)\n", dece, hexe);
206 cb_data.password = passout;
207 cb_data.prompt_info = outfile;
209 if (!PEM_write_bio_RSAPrivateKey(out, rsa, enc, NULL, 0,
210 (pem_password_cb *)password_callback,
220 OPENSSL_free(passout);
222 ERR_print_errors(bio_err);
226 static int genrsa_cb(int p, int n, BN_GENCB *cb)
238 BIO_write(BN_GENCB_get_arg(cb), &c, 1);
239 (void)BIO_flush(BN_GENCB_get_arg(cb));
242 #else /* !OPENSSL_NO_RSA */
245 static void *dummy = &dummy;