1 /* ====================================================================
2 * Copyright (c) 2004 The OpenSSL Project. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in
13 * the documentation and/or other materials provided with the
16 * 3. All advertising materials mentioning features or use of this
17 * software must display the following acknowledgment:
18 * "This product includes software developed by the OpenSSL Project
19 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
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22 * endorse or promote products derived from this software without
23 * prior written permission. For written permission, please contact
24 * openssl-core@openssl.org.
26 * 5. Products derived from this software may not be called "OpenSSL"
27 * nor may "OpenSSL" appear in their names without prior written
28 * permission of the OpenSSL Project.
30 * 6. Redistributions of any form whatsoever must retain the following
32 * "This product includes software developed by the OpenSSL Project
33 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
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36 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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46 * OF THE POSSIBILITY OF SUCH DAMAGE.
53 #include <openssl/bn.h>
55 typedef enum OPTION_choice {
56 OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
57 OPT_HEX, OPT_GENERATE, OPT_BITS, OPT_SAFE, OPT_CHECKS
60 OPTIONS prime_options[] = {
61 {OPT_HELP_STR, 1, '-', "Usage: %s [options] [number...]\n"},
62 {OPT_HELP_STR, 1, '-',
63 " number Number to check for primality\n"},
64 {"help", OPT_HELP, '-', "Display this summary"},
65 {"hex", OPT_HEX, '-', "Hex output"},
66 {"generate", OPT_GENERATE, '-', "Generate a prime"},
67 {"bits", OPT_BITS, 'p', "Size of number in bits"},
68 {"safe", OPT_SAFE, '-',
69 "When used with -generate, generate a safe prime"},
70 {"checks", OPT_CHECKS, 'p', "Number of checks"},
74 int prime_main(int argc, char **argv)
77 int hex = 0, checks = 20, generate = 0, bits = 0, safe = 0, ret = 1;
81 prog = opt_init(argc, argv, prime_options);
82 while ((o = opt_next()) != OPT_EOF) {
86 BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
89 opt_help(prime_options);
99 bits = atoi(opt_arg());
105 checks = atoi(opt_arg());
109 argc = opt_num_rest();
112 if (argc == 0 && !generate) {
113 BIO_printf(bio_err, "%s: No prime specified\n", prog);
121 BIO_printf(bio_err, "Specify the number of bits.\n");
125 BN_generate_prime_ex(bn, bits, safe, NULL, NULL, NULL);
126 s = hex ? BN_bn2hex(bn) : BN_bn2dec(bn);
127 BIO_printf(bio_out, "%s\n", s);
130 for ( ; *argv; argv++) {
132 BN_hex2bn(&bn, argv[0]);
134 BN_dec2bn(&bn, argv[0]);
136 BN_print(bio_out, bn);
137 BIO_printf(bio_out, " (%s) %s prime\n",
139 BN_is_prime_ex(bn, checks, NULL, NULL)