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 NON_EMPTY_TRANSLATION_UNIT
65 # include <sys/types.h>
66 # include <sys/stat.h>
68 # include <openssl/bio.h>
69 # include <openssl/err.h>
70 # include <openssl/bn.h>
71 # include <openssl/rsa.h>
72 # include <openssl/evp.h>
73 # include <openssl/x509.h>
74 # include <openssl/pem.h>
75 # include <openssl/rand.h>
79 static int genrsa_cb(int p, int n, BN_GENCB *cb);
81 typedef enum OPTION_choice {
82 OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
83 OPT_3, OPT_F4, OPT_ENGINE,
84 OPT_OUT, OPT_RAND, OPT_PASSOUT, OPT_CIPHER
87 OPTIONS genrsa_options[] = {
88 {"help", OPT_HELP, '-', "Display this summary"},
89 {"3", OPT_3, '-', "Use 3 for the E value"},
90 {"F4", OPT_F4, '-', "Use F4 (0x10001) for the E value"},
91 {"f4", OPT_F4, '-', "Use F4 (0x10001) for the E value"},
92 {"out", OPT_OUT, 's', "Output the key to specified file"},
93 {"rand", OPT_RAND, 's',
94 "Load the file(s) into the random number generator"},
95 {"passout", OPT_PASSOUT, 's', "Output file pass phrase source"},
96 {"", OPT_CIPHER, '-', "Encrypt the output with any supported cipher"},
97 # ifndef OPENSSL_NO_ENGINE
98 {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
103 int genrsa_main(int argc, char **argv)
105 BN_GENCB *cb = BN_GENCB_new();
108 BIGNUM *bn = BN_new();
112 const EVP_CIPHER *enc = NULL;
113 int ret = 1, num = DEFBITS, private = 0;
114 unsigned long f4 = RSA_F4;
115 char *outfile = NULL, *passoutarg = NULL, *passout = NULL;
116 char *inrand = NULL, *prog, *hexe, *dece;
119 if (bn == NULL || cb == NULL)
122 BN_GENCB_set(cb, genrsa_cb, bio_err);
124 prog = opt_init(argc, argv, genrsa_options);
125 while ((o = opt_next()) != OPT_EOF) {
129 BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
133 opt_help(genrsa_options);
145 eng = setup_engine(opt_arg(), 0);
151 passoutarg = opt_arg();
154 if (!opt_cipher(opt_unknown(), &enc))
159 argc = opt_num_rest();
163 if (argv[0] && (!opt_int(argv[0], &num) || num <= 0))
166 if (!app_passwd(NULL, passoutarg, NULL, &passout)) {
167 BIO_printf(bio_err, "Error getting password\n");
171 out = bio_open_owner(outfile, FORMAT_PEM, private);
175 if (!app_RAND_load_file(NULL, 1) && inrand == NULL
178 "warning, not much extra random data, consider using the -rand option\n");
181 BIO_printf(bio_err, "%ld semi-random bytes loaded\n",
182 app_RAND_load_files(inrand));
184 BIO_printf(bio_err, "Generating RSA private key, %d bit long modulus\n",
186 rsa = eng ? RSA_new_method(eng) : RSA_new();
190 if (!BN_set_word(bn, f4) || !RSA_generate_key_ex(rsa, num, bn, cb))
193 app_RAND_write_file(NULL);
195 RSA_get0_key(rsa, NULL, &e, NULL);
199 BIO_printf(bio_err, "e is %s (0x%s)\n", dece, hexe);
203 cb_data.password = passout;
204 cb_data.prompt_info = outfile;
206 if (!PEM_write_bio_RSAPrivateKey(out, rsa, enc, NULL, 0,
207 (pem_password_cb *)password_callback,
217 OPENSSL_free(passout);
219 ERR_print_errors(bio_err);
223 static int genrsa_cb(int p, int n, BN_GENCB *cb)
235 BIO_write(BN_GENCB_get_arg(cb), &c, 1);
236 (void)BIO_flush(BN_GENCB_get_arg(cb));