403 lines
9.6 KiB
C
403 lines
9.6 KiB
C
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/* $OpenBSD: rsautl.c,v 1.24 2023/07/23 11:39:29 tb Exp $ */
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/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
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* project 2000.
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*/
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/* ====================================================================
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* Copyright (c) 2000 The OpenSSL Project. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. All advertising materials mentioning features or use of this
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* software must display the following acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
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*
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* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
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* endorse or promote products derived from this software without
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* prior written permission. For written permission, please contact
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* licensing@OpenSSL.org.
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*
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* 5. Products derived from this software may not be called "OpenSSL"
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* nor may "OpenSSL" appear in their names without prior written
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* permission of the OpenSSL Project.
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*
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* 6. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
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*
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* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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* ====================================================================
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*
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* This product includes cryptographic software written by Eric Young
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* (eay@cryptsoft.com). This product includes software written by Tim
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* Hudson (tjh@cryptsoft.com).
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*
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*/
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#include <openssl/opensslconf.h>
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#include <string.h>
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#include "apps.h"
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#include <openssl/err.h>
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#include <openssl/pem.h>
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#include <openssl/rsa.h>
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#define RSA_SIGN 1
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#define RSA_VERIFY 2
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#define RSA_ENCRYPT 3
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#define RSA_DECRYPT 4
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#define KEY_PRIVKEY 1
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#define KEY_PUBKEY 2
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#define KEY_CERT 3
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static struct {
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int asn1parse;
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int hexdump;
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char *infile;
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char *keyfile;
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int keyform;
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int key_type;
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char *outfile;
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int pad;
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char *passargin;
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int rev;
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int rsa_mode;
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} cfg;
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static const struct option rsautl_options[] = {
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{
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.name = "asn1parse",
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.desc = "ASN.1 parse the output data",
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.type = OPTION_FLAG,
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.opt.flag = &cfg.asn1parse,
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},
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{
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.name = "certin",
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.desc = "Input is a certificate containing an RSA public key",
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.type = OPTION_VALUE,
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.value = KEY_CERT,
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.opt.value = &cfg.key_type,
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},
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{
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.name = "decrypt",
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.desc = "Decrypt the input data using RSA private key",
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.type = OPTION_VALUE,
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.value = RSA_DECRYPT,
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.opt.value = &cfg.rsa_mode,
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},
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{
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.name = "encrypt",
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.desc = "Encrypt the input data using RSA public key",
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.type = OPTION_VALUE,
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.value = RSA_ENCRYPT,
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.opt.value = &cfg.rsa_mode,
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},
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{
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.name = "hexdump",
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.desc = "Hex dump the output data",
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.type = OPTION_FLAG,
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.opt.flag = &cfg.hexdump,
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},
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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 = &cfg.infile,
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},
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{
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.name = "inkey",
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.argname = "file",
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.desc = "Input key 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 = "keyform",
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.argname = "fmt",
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.desc = "Input key format (DER, TXT or PEM (default))",
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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 = "oaep",
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.desc = "Use PKCS#1 OAEP padding",
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.type = OPTION_VALUE,
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.value = RSA_PKCS1_OAEP_PADDING,
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.opt.value = &cfg.pad,
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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 = &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 = "Key password 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 = "pkcs",
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.desc = "Use PKCS#1 v1.5 padding (default)",
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.type = OPTION_VALUE,
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.value = RSA_PKCS1_PADDING,
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.opt.value = &cfg.pad,
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},
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{
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.name = "pubin",
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.desc = "Input is an RSA public key",
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.type = OPTION_VALUE,
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.value = KEY_PUBKEY,
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.opt.value = &cfg.key_type,
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},
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{
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.name = "raw",
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.desc = "Use no padding",
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.type = OPTION_VALUE,
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.value = RSA_NO_PADDING,
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.opt.value = &cfg.pad,
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},
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{
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.name = "rev",
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.desc = "Reverse the input data",
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.type = OPTION_FLAG,
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.opt.flag = &cfg.rev,
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},
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{
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.name = "sign",
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.desc = "Sign the input data using RSA private key",
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.type = OPTION_VALUE,
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.value = RSA_SIGN,
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.opt.value = &cfg.rsa_mode,
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},
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{
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.name = "verify",
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.desc = "Verify the input data using RSA public key",
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.type = OPTION_VALUE,
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.value = RSA_VERIFY,
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.opt.value = &cfg.rsa_mode,
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},
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{
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.name = "x931",
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.desc = "Use ANSI X9.31 padding",
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.type = OPTION_VALUE,
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.value = RSA_X931_PADDING,
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.opt.value = &cfg.pad,
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},
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{NULL},
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};
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static void
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rsautl_usage(void)
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{
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fprintf(stderr,
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"usage: rsautl [-asn1parse] [-certin] [-decrypt] [-encrypt] "
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"[-hexdump]\n"
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" [-in file] [-inkey file] [-keyform der | pem]\n"
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" [-oaep | -pkcs | -raw | -x931] [-out file] [-passin arg]\n"
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" [-pubin] [-rev] [-sign] [-verify]\n\n");
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options_usage(rsautl_options);
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}
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int
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rsautl_main(int argc, char **argv)
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{
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BIO *in = NULL, *out = NULL;
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X509 *x;
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EVP_PKEY *pkey = NULL;
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RSA *rsa = NULL;
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unsigned char *rsa_in = NULL, *rsa_out = NULL;
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char *passin = NULL;
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int rsa_inlen, rsa_outlen = 0;
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int need_priv = 0;
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int keysize;
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int ret = 1;
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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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memset(&cfg, 0, sizeof(cfg));
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cfg.keyform = FORMAT_PEM;
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cfg.key_type = KEY_PRIVKEY;
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cfg.pad = RSA_PKCS1_PADDING;
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cfg.rsa_mode = RSA_VERIFY;
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if (options_parse(argc, argv, rsautl_options, NULL, NULL) != 0) {
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rsautl_usage();
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return (1);
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}
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if (cfg.rsa_mode == RSA_SIGN ||
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cfg.rsa_mode == RSA_DECRYPT)
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need_priv = 1;
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if (need_priv && cfg.key_type != KEY_PRIVKEY) {
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BIO_printf(bio_err, "A private key is needed for this operation\n");
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goto end;
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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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switch (cfg.key_type) {
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case KEY_PRIVKEY:
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pkey = load_key(bio_err, cfg.keyfile,
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cfg.keyform, 0, passin, "Private Key");
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break;
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case KEY_PUBKEY:
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pkey = load_pubkey(bio_err, cfg.keyfile,
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cfg.keyform, 0, NULL, "Public Key");
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break;
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case KEY_CERT:
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x = load_cert(bio_err, cfg.keyfile,
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cfg.keyform, NULL, "Certificate");
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if (x) {
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pkey = X509_get_pubkey(x);
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X509_free(x);
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}
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break;
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}
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if (!pkey)
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goto end;
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rsa = EVP_PKEY_get1_RSA(pkey);
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EVP_PKEY_free(pkey);
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if (!rsa) {
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BIO_printf(bio_err, "Error getting RSA key\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 (cfg.infile) {
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if (!(in = BIO_new_file(cfg.infile, "rb"))) {
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BIO_printf(bio_err, "Error Reading Input File\n");
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ERR_print_errors(bio_err);
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goto end;
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}
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} else
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in = BIO_new_fp(stdin, BIO_NOCLOSE);
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if (cfg.outfile) {
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if (!(out = BIO_new_file(cfg.outfile, "wb"))) {
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BIO_printf(bio_err, "Error Reading Output File\n");
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ERR_print_errors(bio_err);
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goto end;
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}
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} else {
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out = BIO_new_fp(stdout, BIO_NOCLOSE);
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}
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keysize = RSA_size(rsa);
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rsa_in = reallocarray(NULL, keysize, 2);
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if (rsa_in == NULL) {
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BIO_printf(bio_err, "Error allocating memory for input data\n");
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exit(1);
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}
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rsa_out = malloc(keysize);
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if (rsa_out == NULL) {
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BIO_printf(bio_err, "Error allocating memory for output data\n");
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exit(1);
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}
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/* Read the input data */
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rsa_inlen = BIO_read(in, rsa_in, keysize * 2);
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if (rsa_inlen <= 0) {
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BIO_printf(bio_err, "Error reading input Data\n");
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exit(1);
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}
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if (cfg.rev) {
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int i;
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unsigned char ctmp;
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for (i = 0; i < rsa_inlen / 2; i++) {
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ctmp = rsa_in[i];
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rsa_in[i] = rsa_in[rsa_inlen - 1 - i];
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rsa_in[rsa_inlen - 1 - i] = ctmp;
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}
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}
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switch (cfg.rsa_mode) {
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case RSA_VERIFY:
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rsa_outlen = RSA_public_decrypt(rsa_inlen, rsa_in, rsa_out,
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rsa, cfg.pad);
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break;
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case RSA_SIGN:
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rsa_outlen = RSA_private_encrypt(rsa_inlen, rsa_in, rsa_out,
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rsa, cfg.pad);
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break;
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case RSA_ENCRYPT:
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rsa_outlen = RSA_public_encrypt(rsa_inlen, rsa_in, rsa_out,
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rsa, cfg.pad);
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break;
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case RSA_DECRYPT:
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rsa_outlen = RSA_private_decrypt(rsa_inlen, rsa_in, rsa_out,
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rsa, cfg.pad);
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break;
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}
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if (rsa_outlen <= 0) {
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BIO_printf(bio_err, "RSA operation error\n");
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ERR_print_errors(bio_err);
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goto end;
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}
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ret = 0;
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if (cfg.asn1parse) {
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if (!ASN1_parse_dump(out, rsa_out, rsa_outlen, 1, -1)) {
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ERR_print_errors(bio_err);
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}
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} else if (cfg.hexdump)
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BIO_dump(out, (char *) rsa_out, rsa_outlen);
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else
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BIO_write(out, rsa_out, rsa_outlen);
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end:
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RSA_free(rsa);
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BIO_free(in);
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BIO_free_all(out);
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free(rsa_in);
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free(rsa_out);
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free(passin);
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return ret;
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}
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