forked from pocoproject/poco
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathRSAKeyImpl.cpp
More file actions
351 lines (309 loc) · 9.48 KB
/
RSAKeyImpl.cpp
File metadata and controls
351 lines (309 loc) · 9.48 KB
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
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
//
// RSAKeyImpl.cpp
//
// $Id: //poco/1.4/Crypto/src/RSAKeyImpl.cpp#3 $
//
// Library: Crypto
// Package: RSA
// Module: RSAKeyImpl
//
// Copyright (c) 2008, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// Permission is hereby granted, free of charge, to any person or organization
// obtaining a copy of the software and accompanying documentation covered by
// this license (the "Software") to use, reproduce, display, distribute,
// execute, and transmit the Software, and to prepare derivative works of the
// Software, and to permit third-parties to whom the Software is furnished to
// do so, all subject to the following:
//
// The copyright notices in the Software and this entire statement, including
// the above license grant, this restriction and the following disclaimer,
// must be included in all copies of the Software, in whole or in part, and
// all derivative works of the Software, unless such copies or derivative
// works are solely in the form of machine-executable object code generated by
// a source language processor.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//
#include "Poco/Crypto/RSAKeyImpl.h"
#include "Poco/Crypto/X509Certificate.h"
#include "Poco/FileStream.h"
#include "Poco/StreamCopier.h"
#include <sstream>
#include <openssl/pem.h>
#include <openssl/rsa.h>
#include <openssl/evp.h>
#if OPENSSL_VERSION_NUMBER >= 0x00908000L
#include <openssl/bn.h>
#endif
namespace Poco {
namespace Crypto {
RSAKeyImpl::RSAKeyImpl(const X509Certificate& cert):
_pRSA(0)
{
const X509* pCert = cert.certificate();
EVP_PKEY* pKey = X509_get_pubkey(const_cast<X509*>(pCert));
_pRSA = EVP_PKEY_get1_RSA(pKey);
}
RSAKeyImpl::RSAKeyImpl(int keyLength, unsigned long exponent):
_pRSA(0)
{
#if OPENSSL_VERSION_NUMBER >= 0x00908000L
_pRSA = RSA_new();
int ret = 0;
BIGNUM* bn = 0;
try
{
bn = BN_new();
BN_set_word(bn, exponent);
ret = RSA_generate_key_ex(_pRSA, keyLength, bn, 0);
BN_free(bn);
}
catch (...)
{
BN_free(bn);
throw;
}
if (!ret) throw Poco::InvalidArgumentException("Failed to create RSA context");
#else
_pRSA = RSA_generate_key(keyLength, exponent, 0, 0);
if (!_pRSA) throw Poco::InvalidArgumentException("Failed to create RSA context");
#endif
}
RSAKeyImpl::RSAKeyImpl(
const std::string& publicKeyFile,
const std::string& privateKeyFile,
const std::string& privateKeyPassphrase):
_pRSA(0)
{
poco_assert_dbg(_pRSA == 0);
_pRSA = RSA_new();
if (!publicKeyFile.empty())
{
BIO* bio = BIO_new(BIO_s_file());
if (!bio) throw Poco::IOException("Cannot create BIO for reading public key", publicKeyFile);
int rc = BIO_read_filename(bio, publicKeyFile.c_str());
if (rc)
{
RSA* pubKey = PEM_read_bio_RSAPublicKey(bio, &_pRSA, 0, 0);
if (!pubKey)
{
int rc = BIO_seek(bio, 0);
if (rc != 0) throw Poco::FileException("Failed to load public key", publicKeyFile);
pubKey = PEM_read_bio_RSA_PUBKEY(bio, &_pRSA, 0, 0);
}
BIO_free(bio);
if (!pubKey)
{
freeRSA();
throw Poco::FileException("Failed to load public key", publicKeyFile);
}
}
else
{
freeRSA();
throw Poco::FileNotFoundException("Public key file", publicKeyFile);
}
}
if (!privateKeyFile.empty())
{
BIO* bio = BIO_new(BIO_s_file());
if (!bio) throw Poco::IOException("Cannot create BIO for reading private key", privateKeyFile);
int rc = BIO_read_filename(bio, privateKeyFile.c_str());
if (rc)
{
RSA* privKey = 0;
if (privateKeyPassphrase.empty())
privKey = PEM_read_bio_RSAPrivateKey(bio, &_pRSA, 0, 0);
else
privKey = PEM_read_bio_RSAPrivateKey(bio, &_pRSA, 0, const_cast<char*>(privateKeyPassphrase.c_str()));
BIO_free(bio);
if (!privKey)
{
freeRSA();
throw Poco::FileException("Failed to load private key", privateKeyFile);
}
}
else
{
freeRSA();
throw Poco::FileNotFoundException("Private key file", privateKeyFile);
}
}
}
RSAKeyImpl::RSAKeyImpl(std::istream* pPublicKeyStream, std::istream* pPrivateKeyStream, const std::string& privateKeyPassphrase):
_pRSA(0)
{
poco_assert_dbg(_pRSA == 0);
_pRSA = RSA_new();
if (pPublicKeyStream)
{
std::string publicKeyData;
Poco::StreamCopier::copyToString(*pPublicKeyStream, publicKeyData);
BIO* bio = BIO_new_mem_buf(const_cast<char*>(publicKeyData.data()), static_cast<int>(publicKeyData.size()));
if (!bio) throw Poco::IOException("Cannot create BIO for reading public key");
RSA* publicKey = PEM_read_bio_RSAPublicKey(bio, &_pRSA, 0, 0);
if (!publicKey)
{
int rc = BIO_seek(bio, 0);
if (rc != 0) throw Poco::FileException("Failed to load public key");
publicKey = PEM_read_bio_RSA_PUBKEY(bio, &_pRSA, 0, 0);
}
BIO_free(bio);
if (!publicKey)
{
freeRSA();
throw Poco::FileException("Failed to load public key");
}
}
if (pPrivateKeyStream)
{
std::string privateKeyData;
Poco::StreamCopier::copyToString(*pPrivateKeyStream, privateKeyData);
BIO* bio = BIO_new_mem_buf(const_cast<char*>(privateKeyData.data()), static_cast<int>(privateKeyData.size()));
if (!bio) throw Poco::IOException("Cannot create BIO for reading private key");
RSA* privateKey = 0;
if (privateKeyPassphrase.empty())
privateKey = PEM_read_bio_RSAPrivateKey(bio, &_pRSA, 0, 0);
else
privateKey = PEM_read_bio_RSAPrivateKey(bio, &_pRSA, 0, const_cast<char*>(privateKeyPassphrase.c_str()));
BIO_free(bio);
if (!privateKey)
{
freeRSA();
throw Poco::FileException("Failed to load private key");
}
}
}
RSAKeyImpl::~RSAKeyImpl()
{
freeRSA();
}
void RSAKeyImpl::freeRSA()
{
if (_pRSA)
RSA_free(_pRSA);
_pRSA = 0;
}
int RSAKeyImpl::size() const
{
return RSA_size(_pRSA);
}
RSAKeyImpl::ByteVec RSAKeyImpl::modulus() const
{
return convertToByteVec(_pRSA->n);
}
RSAKeyImpl::ByteVec RSAKeyImpl::encryptionExponent() const
{
return convertToByteVec(_pRSA->e);
}
RSAKeyImpl::ByteVec RSAKeyImpl::decryptionExponent() const
{
return convertToByteVec(_pRSA->d);
}
void RSAKeyImpl::save(const std::string& publicKeyFile, const std::string& privateKeyFile, const std::string& privateKeyPassphrase)
{
if (!publicKeyFile.empty())
{
BIO* bio = BIO_new(BIO_s_file());
if (!bio) throw Poco::IOException("Cannot create BIO for writing public key file", publicKeyFile);
try
{
if (BIO_write_filename(bio, const_cast<char*>(publicKeyFile.c_str())))
{
if (!PEM_write_bio_RSAPublicKey(bio, _pRSA))
throw Poco::WriteFileException("Failed to write public key to file", publicKeyFile);
}
else throw Poco::CreateFileException("Cannot create public key file");
}
catch (...)
{
BIO_free(bio);
throw;
}
BIO_free(bio);
}
if (!privateKeyFile.empty())
{
BIO* bio = BIO_new(BIO_s_file());
if (!bio) throw Poco::IOException("Cannot create BIO for writing private key file", privateKeyFile);
try
{
if (BIO_write_filename(bio, const_cast<char*>(privateKeyFile.c_str())))
{
int rc = 0;
if (privateKeyPassphrase.empty())
rc = PEM_write_bio_RSAPrivateKey(bio, _pRSA, EVP_des_ede3_cbc(), 0, 0, 0, 0);
else
rc = PEM_write_bio_RSAPrivateKey(bio, _pRSA, EVP_des_ede3_cbc(),
reinterpret_cast<unsigned char*>(const_cast<char*>(privateKeyPassphrase.c_str())),
static_cast<int>(privateKeyPassphrase.length()), 0, 0);
if (!rc) throw Poco::FileException("Failed to write private key to file", privateKeyFile);
}
else throw Poco::CreateFileException("Cannot create private key file", privateKeyFile);
}
catch (...)
{
BIO_free(bio);
throw;
}
BIO_free(bio);
}
}
void RSAKeyImpl::save(std::ostream* pPublicKeyStream, std::ostream* pPrivateKeyStream, const std::string& privateKeyPassphrase)
{
if (pPublicKeyStream)
{
BIO* bio = BIO_new(BIO_s_mem());
if (!bio) throw Poco::IOException("Cannot create BIO for writing public key");
if (!PEM_write_bio_RSAPublicKey(bio, _pRSA))
{
BIO_free(bio);
throw Poco::WriteFileException("Failed to write public key to stream");
}
char* pData;
long size = BIO_get_mem_data(bio, &pData);
pPublicKeyStream->write(pData, static_cast<std::streamsize>(size));
BIO_free(bio);
}
if (pPrivateKeyStream)
{
BIO* bio = BIO_new(BIO_s_mem());
if (!bio) throw Poco::IOException("Cannot create BIO for writing public key");
int rc = 0;
if (privateKeyPassphrase.empty())
rc = PEM_write_bio_RSAPrivateKey(bio, _pRSA, EVP_des_ede3_cbc(), 0, 0, 0, 0);
else
rc = PEM_write_bio_RSAPrivateKey(bio, _pRSA, EVP_des_ede3_cbc(),
reinterpret_cast<unsigned char*>(const_cast<char*>(privateKeyPassphrase.c_str())),
static_cast<int>(privateKeyPassphrase.length()), 0, 0);
if (!rc)
{
BIO_free(bio);
throw Poco::FileException("Failed to write private key to stream");
}
char* pData;
long size = BIO_get_mem_data(bio, &pData);
pPrivateKeyStream->write(pData, static_cast<std::streamsize>(size));
BIO_free(bio);
}
}
RSAKeyImpl::ByteVec RSAKeyImpl::convertToByteVec(const BIGNUM* bn)
{
int numBytes = BN_num_bytes(bn);
ByteVec byteVector(numBytes);
ByteVec::value_type* buffer = new ByteVec::value_type[numBytes];
BN_bn2bin(bn, buffer);
for (int i = 0; i < numBytes; ++i)
byteVector[i] = buffer[i];
delete [] buffer;
return byteVector;
}
} } // namespace Poco::Crypto