672 lines
16 KiB
C
672 lines
16 KiB
C
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/* $OpenBSD: dgst.c,v 1.21 2023/03/06 14:32:05 tb 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 <stdio.h>
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#include <stdlib.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/evp.h>
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#include <openssl/hmac.h>
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#include <openssl/objects.h>
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#include <openssl/pem.h>
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#include <openssl/x509.h>
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#define BUFSIZE 1024*8
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int
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do_fp(BIO * out, unsigned char *buf, BIO * bp, int sep, int binout,
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EVP_PKEY * key, unsigned char *sigin, int siglen,
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const char *sig_name, const char *md_name,
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const char *file, BIO * bmd);
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static struct {
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int argsused;
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int debug;
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int do_verify;
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char *hmac_key;
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char *keyfile;
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int keyform;
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const EVP_MD *m;
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char *mac_name;
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STACK_OF(OPENSSL_STRING) *macopts;
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const EVP_MD *md;
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int out_bin;
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char *outfile;
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char *passargin;
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int separator;
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char *sigfile;
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STACK_OF(OPENSSL_STRING) *sigopts;
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int want_pub;
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} cfg;
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static int
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dgst_opt_macopt(char *arg)
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{
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if (arg == NULL)
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return (1);
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if (cfg.macopts == NULL &&
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(cfg.macopts = sk_OPENSSL_STRING_new_null()) == NULL)
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return (1);
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if (!sk_OPENSSL_STRING_push(cfg.macopts, arg))
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return (1);
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return (0);
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}
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static int
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dgst_opt_md(int argc, char **argv, int *argsused)
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{
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char *name = argv[0];
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if (*name++ != '-')
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return (1);
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if ((cfg.m = EVP_get_digestbyname(name)) == NULL)
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return (1);
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cfg.md = cfg.m;
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*argsused = 1;
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return (0);
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}
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static int
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dgst_opt_prverify(char *arg)
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{
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if (arg == NULL)
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return (1);
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cfg.keyfile = arg;
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cfg.do_verify = 1;
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return (0);
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}
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static int
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dgst_opt_sigopt(char *arg)
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{
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if (arg == NULL)
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return (1);
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if (cfg.sigopts == NULL &&
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(cfg.sigopts = sk_OPENSSL_STRING_new_null()) == NULL)
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return (1);
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if (!sk_OPENSSL_STRING_push(cfg.sigopts, arg))
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return (1);
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return (0);
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}
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static int
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dgst_opt_verify(char *arg)
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{
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if (arg == NULL)
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return (1);
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cfg.keyfile = arg;
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cfg.want_pub = 1;
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cfg.do_verify = 1;
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return (0);
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}
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static const struct option dgst_options[] = {
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{
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.name = "binary",
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.desc = "Output the digest or signature in binary form",
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.type = OPTION_VALUE,
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.opt.value = &cfg.out_bin,
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.value = 1,
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},
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{
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.name = "c",
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.desc = "Print the digest in two-digit groups separated by colons",
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.type = OPTION_VALUE,
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.opt.value = &cfg.separator,
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.value = 1,
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},
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{
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.name = "d",
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.desc = "Print BIO debugging information",
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.type = OPTION_FLAG,
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.opt.flag = &cfg.debug,
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},
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{
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.name = "hex",
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.desc = "Output as hex dump",
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.type = OPTION_VALUE,
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.opt.value = &cfg.out_bin,
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.value = 0,
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},
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{
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.name = "hmac",
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.argname = "key",
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.desc = "Create hashed MAC with key",
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.type = OPTION_ARG,
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.opt.arg = &cfg.hmac_key,
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},
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{
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.name = "keyform",
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.argname = "format",
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.desc = "Key file format (PEM)",
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.type = OPTION_ARG_FORMAT,
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.opt.value = &cfg.keyform,
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},
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{
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.name = "mac",
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.argname = "algorithm",
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.desc = "Create MAC (not necessarily HMAC)",
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.type = OPTION_ARG,
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.opt.arg = &cfg.mac_name,
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},
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{
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.name = "macopt",
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.argname = "nm:v",
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.desc = "MAC algorithm parameters or key",
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.type = OPTION_ARG_FUNC,
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.opt.argfunc = dgst_opt_macopt,
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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 to file rather than stdout",
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.type = OPTION_ARG,
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.opt.arg = &cfg.outfile,
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},
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{
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.name = "passin",
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.argname = "arg",
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.desc = "Input file passphrase source",
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.type = OPTION_ARG,
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.opt.arg = &cfg.passargin,
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},
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{
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.name = "prverify",
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.argname = "file",
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.desc = "Verify a signature using private key in file",
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.type = OPTION_ARG_FUNC,
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.opt.argfunc = dgst_opt_prverify,
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},
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{
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.name = "r",
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.desc = "Output the digest in coreutils format",
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.type = OPTION_VALUE,
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.opt.value = &cfg.separator,
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.value = 2,
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},
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{
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.name = "sign",
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.argname = "file",
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.desc = "Sign digest using private key in file",
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.type = OPTION_ARG,
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.opt.arg = &cfg.keyfile,
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},
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{
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.name = "signature",
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.argname = "file",
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.desc = "Signature to verify",
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.type = OPTION_ARG,
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.opt.arg = &cfg.sigfile,
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},
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{
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.name = "sigopt",
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.argname = "nm:v",
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.desc = "Signature parameter",
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.type = OPTION_ARG_FUNC,
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.opt.argfunc = dgst_opt_sigopt,
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},
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{
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.name = "verify",
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.argname = "file",
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.desc = "Verify a signature using public key in file",
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.type = OPTION_ARG_FUNC,
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.opt.argfunc = dgst_opt_verify,
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},
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{
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.name = NULL,
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.desc = "",
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.type = OPTION_ARGV_FUNC,
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.opt.argvfunc = dgst_opt_md,
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},
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{ NULL },
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};
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static void
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list_md_fn(const EVP_MD * m, const char *from, const char *to, void *arg)
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{
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const char *mname;
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/* Skip aliases */
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if (!m)
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return;
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mname = OBJ_nid2ln(EVP_MD_type(m));
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/* Skip shortnames */
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if (strcmp(from, mname))
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return;
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if (strchr(mname, ' '))
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mname = EVP_MD_name(m);
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BIO_printf(arg, " -%-17s To use the %s message digest algorithm\n",
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mname, mname);
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}
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static void
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dgst_usage(void)
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{
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fprintf(stderr, "usage: dgst [-cdr] [-binary] [-digest] [-hex]");
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fprintf(stderr, " [-hmac key] [-keyform fmt]\n");
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fprintf(stderr, " [-mac algorithm] [-macopt nm:v] [-out file]");
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fprintf(stderr, " [-passin arg]\n");
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fprintf(stderr, " [-prverify file] [-sign file]");
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fprintf(stderr, " [-signature file]\n");
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fprintf(stderr, " [-sigopt nm:v] [-verify file] [file ...]\n\n");
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options_usage(dgst_options);
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EVP_MD_do_all_sorted(list_md_fn, bio_err);
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fprintf(stderr, "\n");
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}
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int
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dgst_main(int argc, char **argv)
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{
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unsigned char *buf = NULL;
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int i, err = 1;
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BIO *in = NULL, *inp;
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BIO *bmd = NULL;
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BIO *out = NULL;
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#define PROG_NAME_SIZE 39
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char pname[PROG_NAME_SIZE + 1];
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EVP_PKEY *sigkey = NULL;
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unsigned char *sigbuf = NULL;
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int siglen = 0;
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char *passin = NULL;
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if (pledge("stdio cpath wpath rpath tty", NULL) == -1) {
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perror("pledge");
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exit(1);
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}
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if ((buf = malloc(BUFSIZE)) == NULL) {
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BIO_printf(bio_err, "out of memory\n");
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goto end;
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}
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memset(&cfg, 0, sizeof(cfg));
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cfg.keyform = FORMAT_PEM;
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cfg.out_bin = -1;
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/* first check the program name */
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program_name(argv[0], pname, sizeof pname);
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cfg.md = EVP_get_digestbyname(pname);
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if (options_parse(argc, argv, dgst_options, NULL,
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&cfg.argsused) != 0) {
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dgst_usage();
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goto end;
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}
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argc -= cfg.argsused;
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argv += cfg.argsused;
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if (cfg.do_verify && !cfg.sigfile) {
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BIO_printf(bio_err,
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"No signature to verify: use the -signature option\n");
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goto end;
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}
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in = BIO_new(BIO_s_file());
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bmd = BIO_new(BIO_f_md());
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if (in == NULL || bmd == 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 (cfg.debug) {
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BIO_set_callback(in, BIO_debug_callback);
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/* needed for windows 3.1 */
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BIO_set_callback_arg(in, (char *) bio_err);
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}
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if (!app_passwd(bio_err, cfg.passargin, NULL, &passin, NULL)) {
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BIO_printf(bio_err, "Error getting password\n");
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goto end;
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}
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if (cfg.out_bin == -1) {
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if (cfg.keyfile)
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cfg.out_bin = 1;
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else
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cfg.out_bin = 0;
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}
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if (cfg.outfile) {
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if (cfg.out_bin)
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out = BIO_new_file(cfg.outfile, "wb");
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else
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out = BIO_new_file(cfg.outfile, "w");
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} else {
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out = BIO_new_fp(stdout, BIO_NOCLOSE);
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}
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if (!out) {
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BIO_printf(bio_err, "Error opening output file %s\n",
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cfg.outfile ? cfg.outfile : "(stdout)");
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ERR_print_errors(bio_err);
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goto end;
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}
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if ((!!cfg.mac_name + !!cfg.keyfile +
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!!cfg.hmac_key) > 1) {
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BIO_printf(bio_err,
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"MAC and Signing key cannot both be specified\n");
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goto end;
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}
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if (cfg.keyfile) {
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if (cfg.want_pub)
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sigkey = load_pubkey(bio_err, cfg.keyfile,
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cfg.keyform, 0, NULL, "key file");
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else
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sigkey = load_key(bio_err, cfg.keyfile,
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cfg.keyform, 0, passin, "key file");
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if (!sigkey) {
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/*
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* load_[pub]key() has already printed an appropriate
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* message
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*/
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goto end;
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}
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}
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if (cfg.mac_name) {
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EVP_PKEY_CTX *mac_ctx = NULL;
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int r = 0;
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if (!init_gen_str(bio_err, &mac_ctx, cfg.mac_name, 0))
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goto mac_end;
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if (cfg.macopts) {
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char *macopt;
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for (i = 0; i < sk_OPENSSL_STRING_num(
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cfg.macopts); i++) {
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macopt = sk_OPENSSL_STRING_value(
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cfg.macopts, i);
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||
|
if (pkey_ctrl_string(mac_ctx, macopt) <= 0) {
|
||
|
BIO_printf(bio_err,
|
||
|
"MAC parameter error \"%s\"\n",
|
||
|
macopt);
|
||
|
ERR_print_errors(bio_err);
|
||
|
goto mac_end;
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
if (EVP_PKEY_keygen(mac_ctx, &sigkey) <= 0) {
|
||
|
BIO_puts(bio_err, "Error generating key\n");
|
||
|
ERR_print_errors(bio_err);
|
||
|
goto mac_end;
|
||
|
}
|
||
|
r = 1;
|
||
|
mac_end:
|
||
|
EVP_PKEY_CTX_free(mac_ctx);
|
||
|
if (r == 0)
|
||
|
goto end;
|
||
|
}
|
||
|
if (cfg.hmac_key) {
|
||
|
sigkey = EVP_PKEY_new_mac_key(EVP_PKEY_HMAC, NULL,
|
||
|
(unsigned char *) cfg.hmac_key, -1);
|
||
|
if (!sigkey)
|
||
|
goto end;
|
||
|
}
|
||
|
if (sigkey) {
|
||
|
EVP_MD_CTX *mctx = NULL;
|
||
|
EVP_PKEY_CTX *pctx = NULL;
|
||
|
int r;
|
||
|
if (!BIO_get_md_ctx(bmd, &mctx)) {
|
||
|
BIO_printf(bio_err, "Error getting context\n");
|
||
|
ERR_print_errors(bio_err);
|
||
|
goto end;
|
||
|
}
|
||
|
if (cfg.do_verify)
|
||
|
r = EVP_DigestVerifyInit(mctx, &pctx, cfg.md,
|
||
|
NULL, sigkey);
|
||
|
else
|
||
|
r = EVP_DigestSignInit(mctx, &pctx, cfg.md,
|
||
|
NULL, sigkey);
|
||
|
if (!r) {
|
||
|
BIO_printf(bio_err, "Error setting context\n");
|
||
|
ERR_print_errors(bio_err);
|
||
|
goto end;
|
||
|
}
|
||
|
if (cfg.sigopts) {
|
||
|
char *sigopt;
|
||
|
for (i = 0; i < sk_OPENSSL_STRING_num(
|
||
|
cfg.sigopts); i++) {
|
||
|
sigopt = sk_OPENSSL_STRING_value(
|
||
|
cfg.sigopts, i);
|
||
|
if (pkey_ctrl_string(pctx, sigopt) <= 0) {
|
||
|
BIO_printf(bio_err,
|
||
|
"parameter error \"%s\"\n",
|
||
|
sigopt);
|
||
|
ERR_print_errors(bio_err);
|
||
|
goto end;
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
/* we use md as a filter, reading from 'in' */
|
||
|
else {
|
||
|
if (cfg.md == NULL)
|
||
|
cfg.md = EVP_sha256();
|
||
|
if (!BIO_set_md(bmd, cfg.md)) {
|
||
|
BIO_printf(bio_err, "Error setting digest %s\n", pname);
|
||
|
ERR_print_errors(bio_err);
|
||
|
goto end;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
if (cfg.sigfile && sigkey) {
|
||
|
BIO *sigbio;
|
||
|
siglen = EVP_PKEY_size(sigkey);
|
||
|
sigbuf = malloc(siglen);
|
||
|
if (sigbuf == NULL) {
|
||
|
BIO_printf(bio_err, "out of memory\n");
|
||
|
ERR_print_errors(bio_err);
|
||
|
goto end;
|
||
|
}
|
||
|
sigbio = BIO_new_file(cfg.sigfile, "rb");
|
||
|
if (!sigbio) {
|
||
|
BIO_printf(bio_err, "Error opening signature file %s\n",
|
||
|
cfg.sigfile);
|
||
|
ERR_print_errors(bio_err);
|
||
|
goto end;
|
||
|
}
|
||
|
siglen = BIO_read(sigbio, sigbuf, siglen);
|
||
|
BIO_free(sigbio);
|
||
|
if (siglen <= 0) {
|
||
|
BIO_printf(bio_err, "Error reading signature file %s\n",
|
||
|
cfg.sigfile);
|
||
|
ERR_print_errors(bio_err);
|
||
|
goto end;
|
||
|
}
|
||
|
}
|
||
|
inp = BIO_push(bmd, in);
|
||
|
|
||
|
if (cfg.md == NULL) {
|
||
|
EVP_MD_CTX *tctx;
|
||
|
BIO_get_md_ctx(bmd, &tctx);
|
||
|
cfg.md = EVP_MD_CTX_md(tctx);
|
||
|
}
|
||
|
if (argc == 0) {
|
||
|
BIO_set_fp(in, stdin, BIO_NOCLOSE);
|
||
|
err = do_fp(out, buf, inp, cfg.separator,
|
||
|
cfg.out_bin, sigkey, sigbuf, siglen, NULL, NULL,
|
||
|
"stdin", bmd);
|
||
|
} else {
|
||
|
const char *md_name = NULL, *sig_name = NULL;
|
||
|
if (!cfg.out_bin) {
|
||
|
if (sigkey) {
|
||
|
const EVP_PKEY_ASN1_METHOD *ameth;
|
||
|
ameth = EVP_PKEY_get0_asn1(sigkey);
|
||
|
if (ameth)
|
||
|
EVP_PKEY_asn1_get0_info(NULL, NULL,
|
||
|
NULL, NULL, &sig_name, ameth);
|
||
|
}
|
||
|
md_name = EVP_MD_name(cfg.md);
|
||
|
}
|
||
|
err = 0;
|
||
|
for (i = 0; i < argc; i++) {
|
||
|
int r;
|
||
|
if (BIO_read_filename(in, argv[i]) <= 0) {
|
||
|
perror(argv[i]);
|
||
|
err++;
|
||
|
continue;
|
||
|
} else {
|
||
|
r = do_fp(out, buf, inp, cfg.separator,
|
||
|
cfg.out_bin, sigkey, sigbuf, siglen,
|
||
|
sig_name, md_name, argv[i], bmd);
|
||
|
}
|
||
|
if (r)
|
||
|
err = r;
|
||
|
(void) BIO_reset(bmd);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
end:
|
||
|
freezero(buf, BUFSIZE);
|
||
|
BIO_free(in);
|
||
|
free(passin);
|
||
|
BIO_free_all(out);
|
||
|
EVP_PKEY_free(sigkey);
|
||
|
sk_OPENSSL_STRING_free(cfg.sigopts);
|
||
|
sk_OPENSSL_STRING_free(cfg.macopts);
|
||
|
free(sigbuf);
|
||
|
BIO_free(bmd);
|
||
|
|
||
|
return (err);
|
||
|
}
|
||
|
|
||
|
int
|
||
|
do_fp(BIO * out, unsigned char *buf, BIO * bp, int sep, int binout,
|
||
|
EVP_PKEY * key, unsigned char *sigin, int siglen,
|
||
|
const char *sig_name, const char *md_name,
|
||
|
const char *file, BIO * bmd)
|
||
|
{
|
||
|
size_t len;
|
||
|
int i;
|
||
|
|
||
|
for (;;) {
|
||
|
i = BIO_read(bp, (char *) buf, BUFSIZE);
|
||
|
if (i < 0) {
|
||
|
BIO_printf(bio_err, "Read Error in %s\n", file);
|
||
|
ERR_print_errors(bio_err);
|
||
|
return 1;
|
||
|
}
|
||
|
if (i == 0)
|
||
|
break;
|
||
|
}
|
||
|
if (sigin) {
|
||
|
EVP_MD_CTX *ctx;
|
||
|
BIO_get_md_ctx(bp, &ctx);
|
||
|
i = EVP_DigestVerifyFinal(ctx, sigin, (unsigned int) siglen);
|
||
|
if (i > 0)
|
||
|
BIO_printf(out, "Verified OK\n");
|
||
|
else if (i == 0) {
|
||
|
BIO_printf(out, "Verification Failure\n");
|
||
|
return 1;
|
||
|
} else {
|
||
|
BIO_printf(bio_err, "Error Verifying Data\n");
|
||
|
ERR_print_errors(bio_err);
|
||
|
return 1;
|
||
|
}
|
||
|
return 0;
|
||
|
}
|
||
|
if (key) {
|
||
|
EVP_MD_CTX *ctx;
|
||
|
BIO_get_md_ctx(bp, &ctx);
|
||
|
len = BUFSIZE;
|
||
|
if (!EVP_DigestSignFinal(ctx, buf, &len)) {
|
||
|
BIO_printf(bio_err, "Error Signing Data\n");
|
||
|
ERR_print_errors(bio_err);
|
||
|
return 1;
|
||
|
}
|
||
|
} else {
|
||
|
len = BIO_gets(bp, (char *) buf, BUFSIZE);
|
||
|
if ((int) len < 0) {
|
||
|
ERR_print_errors(bio_err);
|
||
|
return 1;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
if (binout)
|
||
|
BIO_write(out, buf, len);
|
||
|
else if (sep == 2) {
|
||
|
for (i = 0; i < (int) len; i++)
|
||
|
BIO_printf(out, "%02x", buf[i]);
|
||
|
BIO_printf(out, " *%s\n", file);
|
||
|
} else {
|
||
|
if (sig_name)
|
||
|
BIO_printf(out, "%s-%s(%s)= ", sig_name, md_name, file);
|
||
|
else if (md_name)
|
||
|
BIO_printf(out, "%s(%s)= ", md_name, file);
|
||
|
else
|
||
|
BIO_printf(out, "(%s)= ", file);
|
||
|
for (i = 0; i < (int) len; i++) {
|
||
|
if (sep && (i != 0))
|
||
|
BIO_printf(out, ":");
|
||
|
BIO_printf(out, "%02x", buf[i]);
|
||
|
}
|
||
|
BIO_printf(out, "\n");
|
||
|
}
|
||
|
return 0;
|
||
|
}
|