1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
|
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
/*
* XSEC
*
* SimpleEncrypt := An application to generate an XML document (via Xerces) and encrypt
* a portion of it
*
* $Id: simpleDecrypt.cpp 1125514 2011-05-20 19:08:33Z scantor $
*
*/
#include "IOStreamOutputter.hpp"
// Xerces
#include <xercesc/util/PlatformUtils.hpp>
#include <xercesc/parsers/XercesDOMParser.hpp>
#include <xercesc/framework/MemBufInputSource.hpp>
// XML-Security-C (XSEC)
#include <xsec/framework/XSECProvider.hpp>
#include <xsec/framework/XSECException.hpp>
#include <xsec/xenc/XENCCipher.hpp>
#include <xsec/enc/OpenSSL/OpenSSLCryptoKeyRSA.hpp>
// Xalan
#ifndef XSEC_NO_XALAN
#include <xalanc/XalanTransformer/XalanTransformer.hpp>
XALAN_USING_XALAN(XalanTransformer)
#endif
// OpenSSL
#include <openssl/bio.h>
#include <openssl/evp.h>
#include <openssl/pem.h>
XERCES_CPP_NAMESPACE_USE
char letter[] = "\n\
<Letter>\n\
<ToAddress>The address of the Recipient</ToAddress>\n\
<FromAddress>The address of the Sender</FromAddress>\n\
<xenc:EncryptedData Type=\"http://www.w3.org/2001/04/xmlenc#Element\" xmlns:xenc=\"http://www.w3.org/2001/04/xmlenc#\">\n\
<xenc:EncryptionMethod Algorithm=\"http://www.w3.org/2001/04/xmlenc#tripledes-cbc\"/>\n\
<ds:KeyInfo xmlns:ds=\"http://www.w3.org/2000/09/xmldsig#\">\n\
<xenc:EncryptedKey xmlns:xenc=\"http://www.w3.org/2001/04/xmlenc#\">\n\
<xenc:EncryptionMethod Algorithm=\"http://www.w3.org/2001/04/xmlenc#rsa-1_5\"/>\n\
<xenc:CipherData>\n\
<xenc:CipherValue>UDH9I9k6dRvlIS7fHLMONtlP24mqEDPzsjSYUg4X5SSzUFskiVaOIzhYPeF21ZeG\n\
MCmdo6wsu6TQB0XebmvJR2wgvYqDd2L2IbXZ1zj2/G7FbVsB/GSGxuQTFw22aMFd\n\
l47P8bKjxX8cUwwYFzbGAUfkgeQp5DglmnJYJPO1cTw=\n\
</xenc:CipherValue>\n\
</xenc:CipherData>\n\
</xenc:EncryptedKey>\n\
</ds:KeyInfo>\n\
<xenc:CipherData>\n\
<xenc:CipherValue>Q7M6QhZOqjyYXdUDOw809dGEJWkyAygRv7r3EJ8FlcY7dYpn78ON79N/ZB5wJxQt\n\
koyHvWimPWkNRlKGP10DJ42PIGDvuTnTBFHCKbvaMrEjkll8PUd8zHQ0OJIaWIYi\n\
AKydplJy2rCzppwn0bI0YQ==\n\
</xenc:CipherValue>\n\
</xenc:CipherData>\n\
</xenc:EncryptedData></Letter>";
// PKCS8 PEM encoded PrivateKey structure (not Encrypted)
char s_privateKey[] = "\n\
-----BEGIN RSA PRIVATE KEY-----\n\
MIICXAIBAAKBgQDQj3pktZckAzwshRnfvLhz3daNU6xpAzoHo3qjCftxDwH1RynP\n\
A5eycJVkV8mwH2C1PFktpjtQTZ2CvPjuKmUV5zEvmYzuIo6SWYaVZN/PJjzsEZMa\n\
VA+U8GhfX1YF/rsuFzXCi8r6FVd3LN//pXHEwoDGdJUdlpdVEuX1iFKlNQIDAQAB\n\
AoGAYQ7Uc7e6Xa0PvNw4XVHzOSC870pISxqQT+u5b9R+anAEhkQW5dsTJpyUOX1N\n\
RCRmGhG6oq7gnY9xRN1yr0uVfJNtc9/HnzJL7L1jeJC8Ub+zbEBvNuPDL2P21ArW\n\
tcXRycUlfRCRBLop7rfOYPXsjtboAGnQY/6hK4rOF4XGrQUCQQD3Euj+0mZqRRZ4\n\
M1yN2wVP0mKOMg2i/HZXaNeVd9X/wyBgK6b7BxHf6onf/mIBWnJnRBlvdCrSdhuT\n\
lPKEoSgvAkEA2BhfWwQihqD4qJcV65nfosjzOZG41rHX69nIqHI7Ejx5ZgeQByH9\n\
Ym96yXoSpZj9ZlFsJYNogTBBnUBjs+jL2wJAFjpVS9eR7y2X/+hfA0QZDj1XMIPA\n\
RlGANAzymDfXwNLFLuG+fAb+zK5FCSnRl12TvUabIzPIRnbptDVKPDRjcQJBALn8\n\
0CVv+59P8HR6BR3QRBDBT8Xey+3NB4Aw42lHV9wsPHg6ThY1hPYx6MZ70IzCjmZ/\n\
8cqfvVRjijWj86wm0z0CQFKfRfBRraOZqfmOiAB4+ILhbJwKBBO6avX9TPgMYkyN\n\
mWKCxS+9fPiy1iI+G+B9xkw2gJ9i8P81t7fsOvdTDFA=\n\
-----END RSA PRIVATE KEY-----";
int main (int argc, char **argv) {
try {
XMLPlatformUtils::Initialize();
#ifndef XSEC_NO_XALAN
XalanTransformer::initialize();
#endif
XSECPlatformUtils::Initialise();
}
catch (const XMLException &e) {
cerr << "Error during initialisation of Xerces" << endl;
cerr << "Error Message = : "
<< e.getMessage() << endl;
}
// Use xerces to parse the document
XercesDOMParser * parser = new XercesDOMParser;
parser->setDoNamespaces(true);
parser->setCreateEntityReferenceNodes(true);
parser->setDoSchema(true);
// Create an input source
MemBufInputSource* memIS = new MemBufInputSource ((const XMLByte*) letter, (unsigned int) strlen(letter), "XSECMem");
parser->parse(*memIS);
xsecsize_t errorCount = parser->getErrorCount();
if (errorCount > 0) {
cerr << "Error parsing input document\n";
exit (1);
}
DOMDocument *doc = parser->getDocument();
/* Decrypt Operations */
try {
/* Create the cipher object that we need */
XSECProvider prov;
XENCCipher *cipher;
cipher = prov.newCipher(doc);
/* Load the private key via OpenSSL and then wrap in an OpenSSLCrypto construct */
BIO * bioMem = BIO_new(BIO_s_mem());
BIO_puts(bioMem, s_privateKey);
EVP_PKEY * pk = PEM_read_bio_PrivateKey(bioMem, NULL, NULL, NULL);
/* NOTE : For simplicity - no error checking here */
OpenSSLCryptoKeyRSA * k = new OpenSSLCryptoKeyRSA(pk);
cipher->setKEK(k);
/* Find the EncryptedData node */
DOMNode * encryptedNode = findXENCNode(doc, "EncryptedData");
/* Do the decrypt */
cipher->decryptElement((DOMElement *) encryptedNode);
}
catch (XSECException &e)
{
char * msg = XMLString::transcode(e.getMsg());
cerr << "An error occurred during an encryption operation\n Message: "
<< msg << endl;
exit(1);
}
/* Output */
docSetup(doc);
cout << doc;
return 0;
}
|
