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469 lines
14 KiB
469 lines
14 KiB
/* apps/dsaparam.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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#include <openssl/opensslconf.h> /* for OPENSSL_NO_DSA */ |
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/* |
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* Until the key-gen callbacks are modified to use newer prototypes, we allow |
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* deprecated functions for openssl-internal code |
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*/ |
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#ifdef OPENSSL_NO_DEPRECATED |
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# undef OPENSSL_NO_DEPRECATED |
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#endif |
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#ifndef OPENSSL_NO_DSA |
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# include <assert.h> |
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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/dsa.h> |
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# include <openssl/x509.h> |
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# include <openssl/pem.h> |
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# undef PROG |
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# define PROG dsaparam_main |
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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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* -noout |
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* -text |
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* -C |
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* -noout |
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* -genkey |
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* #ifdef GENCB_TEST |
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* -timebomb n - interrupt keygen after <n> seconds |
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* #endif |
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*/ |
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# ifdef GENCB_TEST |
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static int stop_keygen_flag = 0; |
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static void timebomb_sigalarm(int foo) |
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{ |
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stop_keygen_flag = 1; |
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} |
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# endif |
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static int MS_CALLBACK dsa_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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DSA *dsa = NULL; |
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int i, badops = 0, text = 0; |
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BIO *in = NULL, *out = NULL; |
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int informat, outformat, noout = 0, C = 0, ret = 1; |
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char *infile, *outfile, *prog, *inrand = NULL; |
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int numbits = -1, num, genkey = 0; |
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int need_rand = 0; |
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# ifndef OPENSSL_NO_ENGINE |
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char *engine = NULL; |
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# endif |
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# ifdef GENCB_TEST |
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int timebomb = 0; |
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# endif |
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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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# ifdef GENCB_TEST |
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else if (strcmp(*argv, "-timebomb") == 0) { |
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if (--argc < 1) |
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goto bad; |
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timebomb = atoi(*(++argv)); |
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} |
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# endif |
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else if (strcmp(*argv, "-text") == 0) |
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text = 1; |
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else if (strcmp(*argv, "-C") == 0) |
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C = 1; |
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else if (strcmp(*argv, "-genkey") == 0) { |
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genkey = 1; |
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need_rand = 1; |
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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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need_rand = 1; |
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} else if (strcmp(*argv, "-noout") == 0) |
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noout = 1; |
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else if (sscanf(*argv, "%d", &num) == 1) { |
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/* generate a key */ |
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numbits = num; |
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need_rand = 1; |
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} else { |
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BIO_printf(bio_err, "unknown option %s\n", *argv); |
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badops = 1; |
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break; |
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} |
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argc--; |
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argv++; |
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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] [bits] <infile >outfile\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 - DER or PEM\n"); |
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BIO_printf(bio_err, " -outform arg output format - DER or 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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BIO_printf(bio_err, " -text print as text\n"); |
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BIO_printf(bio_err, " -C Output C code\n"); |
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BIO_printf(bio_err, " -noout no output\n"); |
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BIO_printf(bio_err, " -genkey generate a DSA key\n"); |
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BIO_printf(bio_err, |
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" -rand files to use for random number input\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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# ifdef GENCB_TEST |
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BIO_printf(bio_err, |
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" -timebomb n interrupt keygen after <n> seconds\n"); |
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# endif |
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BIO_printf(bio_err, |
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" number number of bits to use for generating private key\n"); |
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goto end; |
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} |
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ERR_load_crypto_strings(); |
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in = BIO_new(BIO_s_file()); |
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out = BIO_new(BIO_s_file()); |
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if ((in == NULL) || (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 (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 (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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# ifndef OPENSSL_NO_ENGINE |
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setup_engine(bio_err, engine, 0); |
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# endif |
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if (need_rand) { |
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app_RAND_load_file(NULL, bio_err, (inrand != NULL)); |
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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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} |
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if (numbits > 0) { |
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BN_GENCB cb; |
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BN_GENCB_set(&cb, dsa_cb, bio_err); |
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assert(need_rand); |
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dsa = DSA_new(); |
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if (!dsa) { |
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BIO_printf(bio_err, "Error allocating DSA object\n"); |
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goto end; |
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} |
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BIO_printf(bio_err, "Generating DSA parameters, %d bit long prime\n", |
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num); |
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BIO_printf(bio_err, "This could take some time\n"); |
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# ifdef GENCB_TEST |
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if (timebomb > 0) { |
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struct sigaction act; |
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act.sa_handler = timebomb_sigalarm; |
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act.sa_flags = 0; |
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BIO_printf(bio_err, |
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"(though I'll stop it if not done within %d secs)\n", |
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timebomb); |
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if (sigaction(SIGALRM, &act, NULL) != 0) { |
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BIO_printf(bio_err, "Error, couldn't set SIGALRM handler\n"); |
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goto end; |
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} |
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alarm(timebomb); |
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} |
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# endif |
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if (!DSA_generate_parameters_ex(dsa, num, NULL, 0, NULL, NULL, &cb)) { |
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# ifdef GENCB_TEST |
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if (stop_keygen_flag) { |
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BIO_printf(bio_err, "DSA key generation time-stopped\n"); |
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/* This is an asked-for behaviour! */ |
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ret = 0; |
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goto end; |
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} |
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# endif |
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ERR_print_errors(bio_err); |
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BIO_printf(bio_err, "Error, DSA key generation failed\n"); |
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goto end; |
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} |
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} else if (informat == FORMAT_ASN1) |
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dsa = d2i_DSAparams_bio(in, NULL); |
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else if (informat == FORMAT_PEM) |
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dsa = PEM_read_bio_DSAparams(in, NULL, NULL, NULL); |
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else { |
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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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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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if (text) { |
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DSAparams_print(out, dsa); |
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} |
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if (C) { |
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unsigned char *data; |
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int l, len, bits_p; |
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len = BN_num_bytes(dsa->p); |
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bits_p = BN_num_bits(dsa->p); |
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data = (unsigned char *)OPENSSL_malloc(len + 20); |
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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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l = BN_bn2bin(dsa->p, data); |
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printf("static unsigned char dsa%d_p[]={", bits_p); |
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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"); |
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printf("0x%02X,", data[i]); |
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} |
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printf("\n\t};\n"); |
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l = BN_bn2bin(dsa->q, data); |
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printf("static unsigned char dsa%d_q[]={", bits_p); |
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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"); |
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printf("0x%02X,", data[i]); |
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} |
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printf("\n\t};\n"); |
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l = BN_bn2bin(dsa->g, data); |
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printf("static unsigned char dsa%d_g[]={", bits_p); |
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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"); |
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printf("0x%02X,", data[i]); |
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} |
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printf("\n\t};\n\n"); |
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printf("DSA *get_dsa%d()\n\t{\n", bits_p); |
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printf("\tDSA *dsa;\n\n"); |
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printf("\tif ((dsa=DSA_new()) == NULL) return(NULL);\n"); |
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printf("\tdsa->p=BN_bin2bn(dsa%d_p,sizeof(dsa%d_p),NULL);\n", |
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bits_p, bits_p); |
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printf("\tdsa->q=BN_bin2bn(dsa%d_q,sizeof(dsa%d_q),NULL);\n", |
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bits_p, bits_p); |
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printf("\tdsa->g=BN_bin2bn(dsa%d_g,sizeof(dsa%d_g),NULL);\n", |
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bits_p, bits_p); |
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printf |
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("\tif ((dsa->p == NULL) || (dsa->q == NULL) || (dsa->g == NULL))\n"); |
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printf("\t\t{ DSA_free(dsa); return(NULL); }\n"); |
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printf("\treturn(dsa);\n\t}\n"); |
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} |
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if (!noout) { |
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if (outformat == FORMAT_ASN1) |
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i = i2d_DSAparams_bio(out, dsa); |
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else if (outformat == FORMAT_PEM) |
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i = PEM_write_bio_DSAparams(out, dsa); |
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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 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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} |
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if (genkey) { |
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DSA *dsakey; |
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assert(need_rand); |
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if ((dsakey = DSAparams_dup(dsa)) == NULL) |
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goto end; |
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if (!DSA_generate_key(dsakey)) { |
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ERR_print_errors(bio_err); |
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DSA_free(dsakey); |
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goto end; |
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} |
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if (outformat == FORMAT_ASN1) |
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i = i2d_DSAPrivateKey_bio(out, dsakey); |
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else if (outformat == FORMAT_PEM) |
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i = PEM_write_bio_DSAPrivateKey(out, dsakey, NULL, NULL, 0, NULL, |
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NULL); |
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else { |
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BIO_printf(bio_err, "bad output format specified for outfile\n"); |
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DSA_free(dsakey); |
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goto end; |
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} |
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DSA_free(dsakey); |
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} |
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if (need_rand) |
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app_RAND_write_file(NULL, bio_err); |
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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 (dsa != NULL) |
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DSA_free(dsa); |
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apps_shutdown(); |
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OPENSSL_EXIT(ret); |
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} |
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static int MS_CALLBACK dsa_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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# ifdef GENCB_TEST |
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if (stop_keygen_flag) |
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return 0; |
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# endif |
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return 1; |
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} |
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#else /* !OPENSSL_NO_DSA */ |
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# if PEDANTIC |
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static void *dummy = &dummy; |
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# endif |
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#endif
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