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e61434b427
Signed-off-by: Kurt Roeckx <kurt@roeckx.be> Reviewed-by: Rich Salz <rsalz@akamai.com> GH: #458
149 lines
4.9 KiB
C
149 lines
4.9 KiB
C
/* ====================================================================
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* Copyright (c) 2004 The OpenSSL Project. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. All advertising materials mentioning features or use of this
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* software must display the following acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
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*
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* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
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* endorse or promote products derived from this software without
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* prior written permission. For written permission, please contact
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* openssl-core@openssl.org.
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*
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* 5. Products derived from this software may not be called "OpenSSL"
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* nor may "OpenSSL" appear in their names without prior written
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* permission of the OpenSSL Project.
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*
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* 6. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit (http://www.openssl.org/)"
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*
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* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#include <string.h>
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#include "apps.h"
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#include <openssl/bn.h>
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typedef enum OPTION_choice {
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OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
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OPT_HEX, OPT_GENERATE, OPT_BITS, OPT_SAFE, OPT_CHECKS
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} OPTION_CHOICE;
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OPTIONS prime_options[] = {
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{OPT_HELP_STR, 1, '-', "Usage: %s [options] [number...]\n"},
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{OPT_HELP_STR, 1, '-',
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" number Number to check for primality\n"},
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{"help", OPT_HELP, '-', "Display this summary"},
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{"hex", OPT_HEX, '-', "Hex output"},
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{"generate", OPT_GENERATE, '-', "Generate a prime"},
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{"bits", OPT_BITS, 'p', "Size of number in bits"},
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{"safe", OPT_SAFE, '-',
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"When used with -generate, generate a safe prime"},
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{"checks", OPT_CHECKS, 'p', "Number of checks"},
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{NULL}
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};
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int prime_main(int argc, char **argv)
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{
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BIGNUM *bn = NULL;
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int hex = 0, checks = 20, generate = 0, bits = 0, safe = 0, ret = 1;
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char *prog;
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OPTION_CHOICE o;
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prog = opt_init(argc, argv, prime_options);
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while ((o = opt_next()) != OPT_EOF) {
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switch (o) {
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case OPT_EOF:
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case OPT_ERR:
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BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
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goto end;
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case OPT_HELP:
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opt_help(prime_options);
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ret = 0;
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goto end;
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case OPT_HEX:
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hex = 1;
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break;
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case OPT_GENERATE:
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generate = 1;
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break;
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case OPT_BITS:
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bits = atoi(opt_arg());
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break;
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case OPT_SAFE:
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safe = 1;
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break;
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case OPT_CHECKS:
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checks = atoi(opt_arg());
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break;
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}
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}
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argc = opt_num_rest();
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argv = opt_rest();
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if (argc == 0 && !generate) {
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BIO_printf(bio_err, "%s: No prime specified\n", prog);
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goto end;
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}
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if (generate) {
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char *s;
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if (!bits) {
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BIO_printf(bio_err, "Specify the number of bits.\n");
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goto end;
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}
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bn = BN_new();
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BN_generate_prime_ex(bn, bits, safe, NULL, NULL, NULL);
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s = hex ? BN_bn2hex(bn) : BN_bn2dec(bn);
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BIO_printf(bio_out, "%s\n", s);
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OPENSSL_free(s);
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} else {
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for ( ; *argv; argv++) {
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if (hex)
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BN_hex2bn(&bn, argv[0]);
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else
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BN_dec2bn(&bn, argv[0]);
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BN_print(bio_out, bn);
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BIO_printf(bio_out, " (%s) %s prime\n",
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argv[0],
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BN_is_prime_ex(bn, checks, NULL, NULL)
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? "is" : "is not");
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}
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}
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BN_free(bn);
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end:
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return ret;
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}
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