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/* $OpenBSD: dsa.c,v 1.9 2017/01/20 08:57:11 deraadt Exp $ */ |
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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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61 |
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#include <ctype.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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67 |
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#include "apps.h" |
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69 |
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#include <openssl/bio.h> |
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#include <openssl/bn.h> |
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#include <openssl/dsa.h> |
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#include <openssl/err.h> |
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#include <openssl/evp.h> |
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#include <openssl/pem.h> |
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#include <openssl/x509.h> |
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|
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static struct { |
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const EVP_CIPHER *enc; |
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char *infile; |
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int informat; |
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int modulus; |
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int noout; |
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char *outfile; |
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int outformat; |
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char *passargin; |
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char *passargout; |
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int pubin; |
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int pubout; |
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int pvk_encr; |
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int text; |
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} dsa_config; |
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static int |
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dsa_opt_enc(int argc, char **argv, int *argsused) |
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{ |
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char *name = argv[0]; |
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✗✓ |
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if (*name++ != '-') |
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return (1); |
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✗✓ |
8 |
if ((dsa_config.enc = EVP_get_cipherbyname(name)) != NULL) { |
102 |
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*argsused = 1; |
103 |
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return (0); |
104 |
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} |
105 |
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106 |
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8 |
return (1); |
107 |
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8 |
} |
108 |
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109 |
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static struct option dsa_options[] = { |
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{ |
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.name = "in", |
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.argname = "file", |
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.desc = "Input file (default stdin)", |
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.type = OPTION_ARG, |
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.opt.arg = &dsa_config.infile, |
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}, |
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{ |
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.name = "inform", |
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.argname = "format", |
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.desc = "Input format (PEM (default) or any other supported" |
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" format)", |
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.type = OPTION_ARG_FORMAT, |
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.opt.value = &dsa_config.informat, |
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}, |
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{ |
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.name = "noout", |
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.desc = "No output", |
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.type = OPTION_FLAG, |
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.opt.flag = &dsa_config.noout, |
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}, |
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{ |
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.name = "out", |
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.argname = "file", |
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.desc = "Output file (default stdout)", |
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.type = OPTION_ARG, |
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.opt.arg = &dsa_config.outfile, |
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}, |
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{ |
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.name = "outform", |
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.argname = "format", |
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.desc = "Output format (DER, MSBLOB, PEM (default) or PVK)", |
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.type = OPTION_ARG_FORMAT, |
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.opt.value = &dsa_config.outformat, |
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}, |
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{ |
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.name = "passin", |
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.argname = "source", |
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.desc = "Input file passphrase source", |
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.type = OPTION_ARG, |
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.opt.arg = &dsa_config.passargin, |
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}, |
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{ |
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.name = "passout", |
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.argname = "source", |
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.desc = "Output file passphrase source", |
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.type = OPTION_ARG, |
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.opt.arg = &dsa_config.passargout, |
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}, |
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{ |
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.name = "pubin", |
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.desc = "Read a public key from the input file instead of" |
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" private key", |
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.type = OPTION_FLAG, |
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.opt.flag = &dsa_config.pubin, |
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}, |
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{ |
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.name = "pubout", |
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.desc = "Output a public key instead of private key", |
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.type = OPTION_FLAG, |
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.opt.flag = &dsa_config.pubout, |
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}, |
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{ |
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.name = "pvk-none", |
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.desc = "PVK encryption level", |
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.type = OPTION_VALUE, |
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.value = 0, |
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.opt.value = &dsa_config.pvk_encr, |
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}, |
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{ |
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.name = "pvk-strong", |
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.desc = "PVK encryption level (default)", |
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.type = OPTION_VALUE, |
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.value = 2, |
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.opt.value = &dsa_config.pvk_encr, |
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}, |
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{ |
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.name = "pvk-weak", |
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.desc = "PVK encryption level", |
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.type = OPTION_VALUE, |
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.value = 1, |
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.opt.value = &dsa_config.pvk_encr, |
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}, |
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{ |
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.name = "text", |
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.desc = "Print the key in text form", |
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.type = OPTION_FLAG, |
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.opt.flag = &dsa_config.text, |
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}, |
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{ |
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.name = NULL, |
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.type = OPTION_ARGV_FUNC, |
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.opt.argvfunc = dsa_opt_enc, |
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}, |
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{ NULL }, |
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}; |
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static void |
208 |
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show_ciphers(const OBJ_NAME *name, void *arg) |
209 |
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{ |
210 |
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static int n; |
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212 |
✓✓ |
3248 |
if (!islower((unsigned char)*name->name)) |
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return; |
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848 |
fprintf(stderr, " -%-24s%s", name->name, (++n % 3 ? "" : "\n")); |
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2472 |
} |
217 |
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static void |
219 |
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dsa_usage(void) |
220 |
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{ |
221 |
|
16 |
fprintf(stderr, |
222 |
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"usage: dsa [-in file] [-inform format] [-noout]\n" |
223 |
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" [-out file] [-outform format] [-passin src] [-passout src]\n" |
224 |
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" [-pubin] [-pubout] [-pvk-none | -pvk-strong | -pvk-weak]\n" |
225 |
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" [-text] [-ciphername]\n\n"); |
226 |
|
8 |
options_usage(dsa_options); |
227 |
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8 |
fprintf(stderr, "\n"); |
228 |
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|
229 |
|
8 |
fprintf(stderr, "Valid ciphername values:\n\n"); |
230 |
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8 |
OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_CIPHER_METH, show_ciphers, NULL); |
231 |
|
8 |
fprintf(stderr, "\n"); |
232 |
|
8 |
} |
233 |
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|
234 |
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int |
235 |
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dsa_main(int argc, char **argv) |
236 |
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{ |
237 |
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int ret = 1; |
238 |
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DSA *dsa = NULL; |
239 |
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int i; |
240 |
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BIO *in = NULL, *out = NULL; |
241 |
|
32 |
char *passin = NULL, *passout = NULL; |
242 |
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|
243 |
✓✗ |
16 |
if (single_execution) { |
244 |
✗✓ |
16 |
if (pledge("stdio cpath wpath rpath tty flock", NULL) == -1) { |
245 |
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perror("pledge"); |
246 |
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exit(1); |
247 |
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} |
248 |
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} |
249 |
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|
250 |
|
16 |
memset(&dsa_config, 0, sizeof(dsa_config)); |
251 |
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|
252 |
|
16 |
dsa_config.pvk_encr = 2; |
253 |
|
16 |
dsa_config.informat = FORMAT_PEM; |
254 |
|
16 |
dsa_config.outformat = FORMAT_PEM; |
255 |
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|
256 |
✓✓ |
16 |
if (options_parse(argc, argv, dsa_options, NULL, NULL) != 0) { |
257 |
|
8 |
dsa_usage(); |
258 |
|
8 |
goto end; |
259 |
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} |
260 |
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|
261 |
✗✓ |
8 |
if (!app_passwd(bio_err, dsa_config.passargin, dsa_config.passargout, |
262 |
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&passin, &passout)) { |
263 |
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BIO_printf(bio_err, "Error getting passwords\n"); |
264 |
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goto end; |
265 |
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} |
266 |
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|
267 |
|
8 |
in = BIO_new(BIO_s_file()); |
268 |
|
8 |
out = BIO_new(BIO_s_file()); |
269 |
✗✓ |
8 |
if (in == NULL || out == NULL) { |
270 |
|
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ERR_print_errors(bio_err); |
271 |
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goto end; |
272 |
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} |
273 |
✗✓ |
8 |
if (dsa_config.infile == NULL) |
274 |
|
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BIO_set_fp(in, stdin, BIO_NOCLOSE); |
275 |
|
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else { |
276 |
✗✓ |
8 |
if (BIO_read_filename(in, dsa_config.infile) <= 0) { |
277 |
|
|
perror(dsa_config.infile); |
278 |
|
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goto end; |
279 |
|
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} |
280 |
|
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} |
281 |
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|
282 |
|
8 |
BIO_printf(bio_err, "read DSA key\n"); |
283 |
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|
284 |
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{ |
285 |
|
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EVP_PKEY *pkey; |
286 |
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|
287 |
✗✓ |
8 |
if (dsa_config.pubin) |
288 |
|
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pkey = load_pubkey(bio_err, dsa_config.infile, |
289 |
|
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dsa_config.informat, 1, passin, "Public Key"); |
290 |
|
|
else |
291 |
|
8 |
pkey = load_key(bio_err, dsa_config.infile, |
292 |
|
|
dsa_config.informat, 1, passin, "Private Key"); |
293 |
|
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|
294 |
✓✗ |
8 |
if (pkey) { |
295 |
|
8 |
dsa = EVP_PKEY_get1_DSA(pkey); |
296 |
|
8 |
EVP_PKEY_free(pkey); |
297 |
|
8 |
} |
298 |
|
|
} |
299 |
✗✓ |
8 |
if (dsa == NULL) { |
300 |
|
|
BIO_printf(bio_err, "unable to load Key\n"); |
301 |
|
|
ERR_print_errors(bio_err); |
302 |
|
|
goto end; |
303 |
|
|
} |
304 |
✗✓ |
8 |
if (dsa_config.outfile == NULL) { |
305 |
|
|
BIO_set_fp(out, stdout, BIO_NOCLOSE); |
306 |
|
|
} else { |
307 |
✗✓ |
8 |
if (BIO_write_filename(out, dsa_config.outfile) <= 0) { |
308 |
|
|
perror(dsa_config.outfile); |
309 |
|
|
goto end; |
310 |
|
|
} |
311 |
|
|
} |
312 |
|
|
|
313 |
✓✗ |
8 |
if (dsa_config.text) { |
314 |
✗✓ |
8 |
if (!DSA_print(out, dsa, 0)) { |
315 |
|
|
perror(dsa_config.outfile); |
316 |
|
|
ERR_print_errors(bio_err); |
317 |
|
|
goto end; |
318 |
|
|
} |
319 |
|
|
} |
320 |
✗✓ |
8 |
if (dsa_config.modulus) { |
321 |
|
|
fprintf(stdout, "Public Key="); |
322 |
|
|
BN_print(out, dsa->pub_key); |
323 |
|
|
fprintf(stdout, "\n"); |
324 |
|
|
} |
325 |
✓✗ |
8 |
if (dsa_config.noout) |
326 |
|
|
goto end; |
327 |
|
8 |
BIO_printf(bio_err, "writing DSA key\n"); |
328 |
✗✓ |
8 |
if (dsa_config.outformat == FORMAT_ASN1) { |
329 |
|
|
if (dsa_config.pubin || dsa_config.pubout) |
330 |
|
|
i = i2d_DSA_PUBKEY_bio(out, dsa); |
331 |
|
|
else |
332 |
|
|
i = i2d_DSAPrivateKey_bio(out, dsa); |
333 |
✓✗ |
8 |
} else if (dsa_config.outformat == FORMAT_PEM) { |
334 |
✗✓ |
8 |
if (dsa_config.pubin || dsa_config.pubout) |
335 |
|
|
i = PEM_write_bio_DSA_PUBKEY(out, dsa); |
336 |
|
|
else |
337 |
|
16 |
i = PEM_write_bio_DSAPrivateKey(out, dsa, dsa_config.enc, |
338 |
|
8 |
NULL, 0, NULL, passout); |
339 |
|
|
#if !defined(OPENSSL_NO_RSA) && !defined(OPENSSL_NO_RC4) |
340 |
|
|
} else if (dsa_config.outformat == FORMAT_MSBLOB || |
341 |
|
|
dsa_config.outformat == FORMAT_PVK) { |
342 |
|
|
EVP_PKEY *pk; |
343 |
|
|
pk = EVP_PKEY_new(); |
344 |
|
|
EVP_PKEY_set1_DSA(pk, dsa); |
345 |
|
|
if (dsa_config.outformat == FORMAT_PVK) |
346 |
|
|
i = i2b_PVK_bio(out, pk, dsa_config.pvk_encr, 0, |
347 |
|
|
passout); |
348 |
|
|
else if (dsa_config.pubin || dsa_config.pubout) |
349 |
|
|
i = i2b_PublicKey_bio(out, pk); |
350 |
|
|
else |
351 |
|
|
i = i2b_PrivateKey_bio(out, pk); |
352 |
|
|
EVP_PKEY_free(pk); |
353 |
|
|
#endif |
354 |
|
|
} else { |
355 |
|
|
BIO_printf(bio_err, "bad output format specified for outfile\n"); |
356 |
|
|
goto end; |
357 |
|
|
} |
358 |
✗✓ |
8 |
if (i <= 0) { |
359 |
|
|
BIO_printf(bio_err, "unable to write private key\n"); |
360 |
|
|
ERR_print_errors(bio_err); |
361 |
|
|
} else |
362 |
|
|
ret = 0; |
363 |
|
|
end: |
364 |
|
16 |
BIO_free(in); |
365 |
✓✓ |
16 |
if (out != NULL) |
366 |
|
8 |
BIO_free_all(out); |
367 |
✓✓ |
16 |
if (dsa != NULL) |
368 |
|
8 |
DSA_free(dsa); |
369 |
|
16 |
free(passin); |
370 |
|
16 |
free(passout); |
371 |
|
|
|
372 |
|
16 |
return (ret); |
373 |
|
16 |
} |