diff options
Diffstat (limited to 'usr.bin/openssl/prime.c')
| -rw-r--r-- | usr.bin/openssl/prime.c | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/usr.bin/openssl/prime.c b/usr.bin/openssl/prime.c new file mode 100644 index 00000000000..e7fb3257d8f --- /dev/null +++ b/usr.bin/openssl/prime.c @@ -0,0 +1,147 @@ +/* $OpenBSD: prime.c,v 1.1 2014/08/26 17:47:25 jsing Exp $ */ +/* ==================================================================== + * Copyright (c) 2004 The OpenSSL Project. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * 3. All advertising materials mentioning features or use of this + * software must display the following acknowledgment: + * "This product includes software developed by the OpenSSL Project + * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" + * + * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to + * endorse or promote products derived from this software without + * prior written permission. For written permission, please contact + * openssl-core@openssl.org. + * + * 5. Products derived from this software may not be called "OpenSSL" + * nor may "OpenSSL" appear in their names without prior written + * permission of the OpenSSL Project. + * + * 6. Redistributions of any form whatsoever must retain the following + * acknowledgment: + * "This product includes software developed by the OpenSSL Project + * for use in the OpenSSL Toolkit (http://www.openssl.org/)" + * + * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY + * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR + * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#include <string.h> +#include <limits.h> + +#include "apps.h" + +#include <openssl/bn.h> + +int prime_main(int, char **); + +int +prime_main(int argc, char **argv) +{ + int hex = 0; + int checks = 20; + int generate = 0; + int bits = 0; + int safe = 0; + BIGNUM *bn = NULL; + const char *errstr = NULL; + BIO *bio_out; + + --argc; + ++argv; + while (argc >= 1 && **argv == '-') { + if (!strcmp(*argv, "-hex")) + hex = 1; + else if (!strcmp(*argv, "-generate")) + generate = 1; + else if (!strcmp(*argv, "-bits")) { + if (--argc < 1) + goto bad; + else + bits = strtonum(*(++argv), 0, INT_MAX, &errstr); + if (errstr) + goto bad; + } else if (!strcmp(*argv, "-safe")) + safe = 1; + else if (!strcmp(*argv, "-checks")) { + if (--argc < 1) + goto bad; + else + checks = strtonum(*(++argv), 0, INT_MAX, &errstr); + if (errstr) + goto bad; + } else { + BIO_printf(bio_err, "Unknown option '%s'\n", *argv); + goto bad; + } + --argc; + ++argv; + } + + if (argv[0] == NULL && !generate) { + BIO_printf(bio_err, "No prime specified\n"); + goto bad; + } + if ((bio_out = BIO_new(BIO_s_file())) != NULL) { + BIO_set_fp(bio_out, stdout, BIO_NOCLOSE); + } + if (generate) { + char *s; + + if (!bits) { + BIO_printf(bio_err, "Specifiy the number of bits.\n"); + return 1; + } + bn = BN_new(); + BN_generate_prime_ex(bn, bits, safe, NULL, NULL, NULL); + s = hex ? BN_bn2hex(bn) : BN_bn2dec(bn); + BIO_printf(bio_out, "%s\n", s); + free(s); + } else { + if (hex) + BN_hex2bn(&bn, argv[0]); + else + BN_dec2bn(&bn, argv[0]); + + BN_print(bio_out, bn); + BIO_printf(bio_out, " is %sprime\n", + BN_is_prime_ex(bn, checks, NULL, NULL) ? "" : "not "); + } + + BN_free(bn); + BIO_free_all(bio_out); + + return 0; + +bad: + if (errstr) + BIO_printf(bio_err, "invalid argument %s: %s\n", *argv, errstr); + else { + BIO_printf(bio_err, "options are\n"); + BIO_printf(bio_err, "%-14s hex\n", "-hex"); + BIO_printf(bio_err, "%-14s number of checks\n", "-checks <n>"); + } + return 1; +} |