Kea  2.3.2-git
crypto_hmac.h
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1 // Copyright (C) 2011-2017 Internet Systems Consortium, Inc. ("ISC")
2 //
3 // This Source Code Form is subject to the terms of the Mozilla Public
4 // License, v. 2.0. If a copy of the MPL was not distributed with this
5 // file, You can obtain one at http://mozilla.org/MPL/2.0/.
6 
7 #include <util/buffer.h>
8 
9 #include <boost/noncopyable.hpp>
10 
11 #include <cryptolink/cryptolink.h>
12 
13 #ifndef ISC_CRYPTO_HMAC_H
14 #define ISC_CRYPTO_HMAC_H
15 
16 namespace isc {
17 namespace cryptolink {
18 
20 class HMACImpl;
21 
27 class HMAC : private boost::noncopyable {
28 private:
45  HMAC(const void* secret, size_t secret_len,
46  const HashAlgorithm hash_algorithm);
47 
48  friend HMAC* CryptoLink::createHMAC(const void*, size_t,
49  const HashAlgorithm);
50 
51 public:
53  ~HMAC();
54 
59 
63  size_t getOutputLength() const;
64 
72  void update(const void* data, const size_t len);
73 
86  void sign(isc::util::OutputBuffer& result, size_t len);
87 
99  void sign(void* result, size_t len);
100 
113  std::vector<uint8_t> sign(size_t len);
114 
130  bool verify(const void* sig, size_t len);
131 
132 private:
133  HMACImpl* impl_;
134 };
135 
163 void signHMAC(const void* data,
164  const size_t data_len,
165  const void* secret,
166  size_t secret_len,
167  const HashAlgorithm hash_algorithm,
168  isc::util::OutputBuffer& result,
169  size_t len = 0);
170 
198 bool verifyHMAC(const void* data,
199  const size_t data_len,
200  const void* secret,
201  size_t secret_len,
202  const HashAlgorithm hash_algorithm,
203  const void* sig,
204  const size_t sig_len);
205 
207 void deleteHMAC(HMAC* hmac);
208 
209 } // namespace cryptolink
210 } // namespace isc
211 
212 #endif // ISC_CRYPTO_HMAC_H
213 
The OutputBuffer class is a buffer abstraction for manipulating mutable data.
Definition: buffer.h:294
Defines the logger used by the top-level component of kea-lfc.