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git.ipfire.org Git - thirdparty/openssl.git/blob - apps/prime.c
2 * Copyright 2004-2018 The OpenSSL Project Authors. All Rights Reserved.
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
14 #include <openssl/bn.h>
16 typedef enum OPTION_choice
{
17 OPT_ERR
= -1, OPT_EOF
= 0, OPT_HELP
,
18 OPT_HEX
, OPT_GENERATE
, OPT_BITS
, OPT_SAFE
, OPT_CHECKS
21 const OPTIONS prime_options
[] = {
22 {OPT_HELP_STR
, 1, '-', "Usage: %s [options] [number...]\n"},
23 {OPT_HELP_STR
, 1, '-',
24 " number Number to check for primality\n"},
25 {"help", OPT_HELP
, '-', "Display this summary"},
26 {"hex", OPT_HEX
, '-', "Hex output"},
27 {"generate", OPT_GENERATE
, '-', "Generate a prime"},
28 {"bits", OPT_BITS
, 'p', "Size of number in bits"},
29 {"safe", OPT_SAFE
, '-',
30 "When used with -generate, generate a safe prime"},
31 {"checks", OPT_CHECKS
, 'p', "Number of checks"},
35 int prime_main(int argc
, char **argv
)
38 int hex
= 0, generate
= 0, bits
= 0, safe
= 0, ret
= 1;
42 prog
= opt_init(argc
, argv
, prime_options
);
43 while ((o
= opt_next()) != OPT_EOF
) {
48 BIO_printf(bio_err
, "%s: Use -help for summary.\n", prog
);
51 opt_help(prime_options
);
61 bits
= atoi(opt_arg());
67 /* ignore parameter and argument */
72 argc
= opt_num_rest();
77 BIO_printf(bio_err
, "Extra arguments given.\n");
80 } else if (argc
== 0) {
81 BIO_printf(bio_err
, "%s: No prime specified\n", prog
);
89 BIO_printf(bio_err
, "Specify the number of bits.\n");
94 BIO_printf(bio_err
, "Out of memory.\n");
97 if (!BN_generate_prime_ex(bn
, bits
, safe
, NULL
, NULL
, NULL
)) {
98 BIO_printf(bio_err
, "Failed to generate prime.\n");
101 s
= hex
? BN_bn2hex(bn
) : BN_bn2dec(bn
);
103 BIO_printf(bio_err
, "Out of memory.\n");
106 BIO_printf(bio_out
, "%s\n", s
);
109 for ( ; *argv
; argv
++) {
113 r
= BN_hex2bn(&bn
, argv
[0]);
115 r
= BN_dec2bn(&bn
, argv
[0]);
118 BIO_printf(bio_err
, "Failed to process value (%s)\n", argv
[0]);
122 BN_print(bio_out
, bn
);
123 BIO_printf(bio_out
, " (%s) %s prime\n",
125 BN_check_prime(bn
, NULL
, NULL
)