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543 lines
18 KiB
543 lines
18 KiB
/* apps/dhparam.c */ |
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/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
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* All rights reserved. |
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* |
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* This package is an SSL implementation written |
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* by Eric Young (eay@cryptsoft.com). |
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* The implementation was written so as to conform with Netscapes SSL. |
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* |
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* This library is free for commercial and non-commercial use as long as |
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* the following conditions are aheared to. The following conditions |
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* apply to all code found in this distribution, be it the RC4, RSA, |
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* lhash, DES, etc., code; not just the SSL code. The SSL documentation |
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* included with this distribution is covered by the same copyright terms |
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* except that the holder is Tim Hudson (tjh@cryptsoft.com). |
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* |
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* Copyright remains Eric Young's, and as such any Copyright notices in |
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* the code are not to be removed. |
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* If this package is used in a product, Eric Young should be given attribution |
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* as the author of the parts of the library used. |
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* This can be in the form of a textual message at program startup or |
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* in documentation (online or textual) provided with the package. |
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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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* 1. Redistributions of source code must retain the copyright |
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* notice, this list of conditions and the following disclaimer. |
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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 the |
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* documentation and/or other materials provided with the distribution. |
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* 3. All advertising materials mentioning features or use of this software |
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* must display the following acknowledgement: |
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* "This product includes cryptographic software written by |
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* Eric Young (eay@cryptsoft.com)" |
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* The word 'cryptographic' can be left out if the rouines from the library |
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* being used are not cryptographic related :-). |
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* 4. If you include any Windows specific code (or a derivative thereof) from |
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* the apps directory (application code) you must include an acknowledgement: |
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* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" |
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* |
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* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* |
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* The licence and distribution terms for any publically available version or |
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* derivative of this code cannot be changed. i.e. this code cannot simply be |
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* copied and put under another distribution licence |
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* [including the GNU Public Licence.] |
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*/ |
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/* ==================================================================== |
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* Copyright (c) 1998-2000 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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* This product includes cryptographic software written by Eric Young |
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* (eay@cryptsoft.com). This product includes software written by Tim |
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* Hudson (tjh@cryptsoft.com). |
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* |
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*/ |
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#include <openssl/opensslconf.h> /* for OPENSSL_NO_DH */ |
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#ifndef OPENSSL_NO_DH |
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# include <stdio.h> |
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# include <stdlib.h> |
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# include <time.h> |
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# include <string.h> |
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# include "apps.h" |
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# include <openssl/bio.h> |
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# include <openssl/err.h> |
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# include <openssl/bn.h> |
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# include <openssl/dh.h> |
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# include <openssl/x509.h> |
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# include <openssl/pem.h> |
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# ifndef OPENSSL_NO_DSA |
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# include <openssl/dsa.h> |
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# endif |
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# undef PROG |
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# define PROG dhparam_main |
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# define DEFBITS 2048 |
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|
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/*- |
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* -inform arg - input format - default PEM (DER or PEM) |
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* -outform arg - output format - default PEM |
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* -in arg - input file - default stdin |
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* -out arg - output file - default stdout |
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* -dsaparam - read or generate DSA parameters, convert to DH |
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* -check - check the parameters are ok |
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* -noout |
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* -text |
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* -C |
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*/ |
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static int MS_CALLBACK dh_cb(int p, int n, BN_GENCB *cb); |
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int MAIN(int, char **); |
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int MAIN(int argc, char **argv) |
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{ |
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DH *dh = NULL; |
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int i, badops = 0, text = 0; |
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# ifndef OPENSSL_NO_DSA |
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int dsaparam = 0; |
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# endif |
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BIO *in = NULL, *out = NULL; |
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int informat, outformat, check = 0, noout = 0, C = 0, ret = 1; |
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char *infile, *outfile, *prog; |
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char *inrand = NULL; |
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# ifndef OPENSSL_NO_ENGINE |
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char *engine = NULL; |
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# endif |
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int num = 0, g = 0; |
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apps_startup(); |
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if (bio_err == NULL) |
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if ((bio_err = BIO_new(BIO_s_file())) != NULL) |
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BIO_set_fp(bio_err, stderr, BIO_NOCLOSE | BIO_FP_TEXT); |
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if (!load_config(bio_err, NULL)) |
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goto end; |
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infile = NULL; |
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outfile = NULL; |
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informat = FORMAT_PEM; |
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outformat = FORMAT_PEM; |
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prog = argv[0]; |
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argc--; |
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argv++; |
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while (argc >= 1) { |
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if (strcmp(*argv, "-inform") == 0) { |
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if (--argc < 1) |
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goto bad; |
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informat = str2fmt(*(++argv)); |
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} else if (strcmp(*argv, "-outform") == 0) { |
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if (--argc < 1) |
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goto bad; |
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outformat = str2fmt(*(++argv)); |
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} else if (strcmp(*argv, "-in") == 0) { |
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if (--argc < 1) |
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goto bad; |
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infile = *(++argv); |
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} else if (strcmp(*argv, "-out") == 0) { |
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if (--argc < 1) |
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goto bad; |
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outfile = *(++argv); |
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} |
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# ifndef OPENSSL_NO_ENGINE |
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else if (strcmp(*argv, "-engine") == 0) { |
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if (--argc < 1) |
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goto bad; |
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engine = *(++argv); |
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} |
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# endif |
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else if (strcmp(*argv, "-check") == 0) |
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check = 1; |
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else if (strcmp(*argv, "-text") == 0) |
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text = 1; |
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# ifndef OPENSSL_NO_DSA |
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else if (strcmp(*argv, "-dsaparam") == 0) |
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dsaparam = 1; |
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# endif |
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else if (strcmp(*argv, "-C") == 0) |
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C = 1; |
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else if (strcmp(*argv, "-noout") == 0) |
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noout = 1; |
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else if (strcmp(*argv, "-2") == 0) |
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g = 2; |
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else if (strcmp(*argv, "-5") == 0) |
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g = 5; |
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else if (strcmp(*argv, "-rand") == 0) { |
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if (--argc < 1) |
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goto bad; |
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inrand = *(++argv); |
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} else if (((sscanf(*argv, "%d", &num) == 0) || (num <= 0))) |
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goto bad; |
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argv++; |
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argc--; |
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} |
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if (badops) { |
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bad: |
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BIO_printf(bio_err, "%s [options] [numbits]\n", prog); |
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BIO_printf(bio_err, "where options are\n"); |
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BIO_printf(bio_err, " -inform arg input format - one of DER PEM\n"); |
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BIO_printf(bio_err, |
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" -outform arg output format - one of DER PEM\n"); |
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BIO_printf(bio_err, " -in arg input file\n"); |
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BIO_printf(bio_err, " -out arg output file\n"); |
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# ifndef OPENSSL_NO_DSA |
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BIO_printf(bio_err, |
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" -dsaparam read or generate DSA parameters, convert to DH\n"); |
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# endif |
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BIO_printf(bio_err, " -check check the DH parameters\n"); |
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BIO_printf(bio_err, |
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" -text print a text form of the DH parameters\n"); |
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BIO_printf(bio_err, " -C Output C code\n"); |
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BIO_printf(bio_err, |
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" -2 generate parameters using 2 as the generator value\n"); |
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BIO_printf(bio_err, |
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" -5 generate parameters using 5 as the generator value\n"); |
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BIO_printf(bio_err, |
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" numbits number of bits in to generate (default 2048)\n"); |
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# ifndef OPENSSL_NO_ENGINE |
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BIO_printf(bio_err, |
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" -engine e use engine e, possibly a hardware device.\n"); |
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# endif |
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BIO_printf(bio_err, " -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, |
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LIST_SEPARATOR_CHAR); |
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BIO_printf(bio_err, |
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" - load the file (or the files in the directory) into\n"); |
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BIO_printf(bio_err, " the random number generator\n"); |
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BIO_printf(bio_err, " -noout no output\n"); |
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goto end; |
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} |
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ERR_load_crypto_strings(); |
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# ifndef OPENSSL_NO_ENGINE |
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setup_engine(bio_err, engine, 0); |
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# endif |
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if (g && !num) |
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num = DEFBITS; |
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# ifndef OPENSSL_NO_DSA |
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if (dsaparam) { |
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if (g) { |
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BIO_printf(bio_err, |
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"generator may not be chosen for DSA parameters\n"); |
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goto end; |
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} |
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} else |
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# endif |
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{ |
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/* DH parameters */ |
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if (num && !g) |
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g = 2; |
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} |
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if (num) { |
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BN_GENCB cb; |
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BN_GENCB_set(&cb, dh_cb, bio_err); |
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if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL) { |
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BIO_printf(bio_err, |
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"warning, not much extra random data, consider using the -rand option\n"); |
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} |
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if (inrand != NULL) |
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BIO_printf(bio_err, "%ld semi-random bytes loaded\n", |
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app_RAND_load_files(inrand)); |
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# ifndef OPENSSL_NO_DSA |
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if (dsaparam) { |
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DSA *dsa = DSA_new(); |
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BIO_printf(bio_err, |
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"Generating DSA parameters, %d bit long prime\n", num); |
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if (!dsa |
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|| !DSA_generate_parameters_ex(dsa, num, NULL, 0, NULL, NULL, |
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&cb)) { |
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if (dsa) |
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DSA_free(dsa); |
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ERR_print_errors(bio_err); |
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goto end; |
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} |
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dh = DSA_dup_DH(dsa); |
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DSA_free(dsa); |
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if (dh == NULL) { |
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ERR_print_errors(bio_err); |
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goto end; |
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} |
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} else |
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# endif |
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{ |
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dh = DH_new(); |
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BIO_printf(bio_err, |
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"Generating DH parameters, %d bit long safe prime, generator %d\n", |
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num, g); |
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BIO_printf(bio_err, "This is going to take a long time\n"); |
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if (!dh || !DH_generate_parameters_ex(dh, num, g, &cb)) { |
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ERR_print_errors(bio_err); |
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goto end; |
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} |
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} |
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app_RAND_write_file(NULL, bio_err); |
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} else { |
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in = BIO_new(BIO_s_file()); |
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if (in == NULL) { |
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ERR_print_errors(bio_err); |
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goto end; |
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} |
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if (infile == NULL) |
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BIO_set_fp(in, stdin, BIO_NOCLOSE); |
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else { |
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if (BIO_read_filename(in, infile) <= 0) { |
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perror(infile); |
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goto end; |
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} |
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} |
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if (informat != FORMAT_ASN1 && informat != FORMAT_PEM) { |
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BIO_printf(bio_err, "bad input format specified\n"); |
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goto end; |
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} |
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# ifndef OPENSSL_NO_DSA |
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if (dsaparam) { |
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DSA *dsa; |
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if (informat == FORMAT_ASN1) |
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dsa = d2i_DSAparams_bio(in, NULL); |
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else /* informat == FORMAT_PEM */ |
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dsa = PEM_read_bio_DSAparams(in, NULL, NULL, NULL); |
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if (dsa == NULL) { |
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BIO_printf(bio_err, "unable to load DSA parameters\n"); |
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ERR_print_errors(bio_err); |
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goto end; |
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} |
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dh = DSA_dup_DH(dsa); |
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DSA_free(dsa); |
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if (dh == NULL) { |
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ERR_print_errors(bio_err); |
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goto end; |
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} |
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} else |
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# endif |
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{ |
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if (informat == FORMAT_ASN1) |
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dh = d2i_DHparams_bio(in, NULL); |
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else /* informat == FORMAT_PEM */ |
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dh = PEM_read_bio_DHparams(in, NULL, NULL, NULL); |
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if (dh == NULL) { |
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BIO_printf(bio_err, "unable to load DH parameters\n"); |
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ERR_print_errors(bio_err); |
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goto end; |
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} |
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} |
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/* dh != NULL */ |
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} |
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out = BIO_new(BIO_s_file()); |
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if (out == NULL) { |
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ERR_print_errors(bio_err); |
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goto end; |
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} |
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if (outfile == NULL) { |
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BIO_set_fp(out, stdout, BIO_NOCLOSE); |
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# ifdef OPENSSL_SYS_VMS |
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{ |
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BIO *tmpbio = BIO_new(BIO_f_linebuffer()); |
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out = BIO_push(tmpbio, out); |
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} |
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# endif |
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} else { |
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if (BIO_write_filename(out, outfile) <= 0) { |
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perror(outfile); |
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goto end; |
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} |
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} |
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if (text) { |
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DHparams_print(out, dh); |
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} |
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if (check) { |
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if (!DH_check(dh, &i)) { |
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ERR_print_errors(bio_err); |
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goto end; |
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} |
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if (i & DH_CHECK_P_NOT_PRIME) |
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printf("p value is not prime\n"); |
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if (i & DH_CHECK_P_NOT_SAFE_PRIME) |
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printf("p value is not a safe prime\n"); |
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if (i & DH_UNABLE_TO_CHECK_GENERATOR) |
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printf("unable to check the generator value\n"); |
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if (i & DH_NOT_SUITABLE_GENERATOR) |
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printf("the g value is not a generator\n"); |
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if (i == 0) |
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printf("DH parameters appear to be ok.\n"); |
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} |
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if (C) { |
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unsigned char *data; |
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int len, l, bits; |
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|
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len = BN_num_bytes(dh->p); |
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bits = BN_num_bits(dh->p); |
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data = (unsigned char *)OPENSSL_malloc(len); |
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if (data == NULL) { |
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perror("OPENSSL_malloc"); |
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goto end; |
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} |
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printf("#ifndef HEADER_DH_H\n" |
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"#include <openssl/dh.h>\n" "#endif\n"); |
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printf("DH *get_dh%d()\n\t{\n", bits); |
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l = BN_bn2bin(dh->p, data); |
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printf("\tstatic unsigned char dh%d_p[]={", bits); |
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for (i = 0; i < l; i++) { |
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if ((i % 12) == 0) |
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printf("\n\t\t"); |
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printf("0x%02X,", data[i]); |
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} |
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printf("\n\t\t};\n"); |
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l = BN_bn2bin(dh->g, data); |
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printf("\tstatic unsigned char dh%d_g[]={", bits); |
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for (i = 0; i < l; i++) { |
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if ((i % 12) == 0) |
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printf("\n\t\t"); |
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printf("0x%02X,", data[i]); |
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} |
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printf("\n\t\t};\n"); |
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|
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printf("\tDH *dh;\n\n"); |
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printf("\tif ((dh=DH_new()) == NULL) return(NULL);\n"); |
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printf("\tdh->p=BN_bin2bn(dh%d_p,sizeof(dh%d_p),NULL);\n", |
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bits, bits); |
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printf("\tdh->g=BN_bin2bn(dh%d_g,sizeof(dh%d_g),NULL);\n", |
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bits, bits); |
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printf("\tif ((dh->p == NULL) || (dh->g == NULL))\n"); |
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printf("\t\t{ DH_free(dh); return(NULL); }\n"); |
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if (dh->length) |
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printf("\tdh->length = %ld;\n", dh->length); |
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printf("\treturn(dh);\n\t}\n"); |
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OPENSSL_free(data); |
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} |
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|
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if (!noout) { |
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if (outformat == FORMAT_ASN1) |
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i = i2d_DHparams_bio(out, dh); |
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else if (outformat == FORMAT_PEM) |
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i = PEM_write_bio_DHparams(out, dh); |
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else { |
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BIO_printf(bio_err, "bad output format specified for outfile\n"); |
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goto end; |
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} |
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if (!i) { |
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BIO_printf(bio_err, "unable to write DH parameters\n"); |
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ERR_print_errors(bio_err); |
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goto end; |
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} |
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} |
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ret = 0; |
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end: |
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if (in != NULL) |
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BIO_free(in); |
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if (out != NULL) |
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BIO_free_all(out); |
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if (dh != NULL) |
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DH_free(dh); |
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apps_shutdown(); |
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OPENSSL_EXIT(ret); |
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} |
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|
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/* dh_cb is identical to dsa_cb in apps/dsaparam.c */ |
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static int MS_CALLBACK dh_cb(int p, int n, BN_GENCB *cb) |
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{ |
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char c = '*'; |
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|
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if (p == 0) |
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c = '.'; |
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if (p == 1) |
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c = '+'; |
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if (p == 2) |
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c = '*'; |
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if (p == 3) |
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c = '\n'; |
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BIO_write(cb->arg, &c, 1); |
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(void)BIO_flush(cb->arg); |
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# ifdef LINT |
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p = n; |
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# endif |
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return 1; |
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} |
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|
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#else /* !OPENSSL_NO_DH */ |
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|
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# if PEDANTIC |
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static void *dummy = &dummy; |
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# endif |
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|
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#endif
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|