Botan  2.15.0
Crypto and TLS for C++11
hmac.h
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1 /*
2 * HMAC
3 * (C) 1999-2007,2014 Jack Lloyd
4 *
5 * Botan is released under the Simplified BSD License (see license.txt)
6 */
7 
8 #ifndef BOTAN_HMAC_H_
9 #define BOTAN_HMAC_H_
10 
11 #include <botan/mac.h>
12 #include <botan/hash.h>
13 
15 
16 namespace Botan {
17 
18 /**
19 * HMAC
20 */
22  {
23  public:
24  void clear() override;
25  std::string name() const override;
26  MessageAuthenticationCode* clone() const override;
27 
28  size_t output_length() const override;
29 
30  Key_Length_Specification key_spec() const override;
31 
32  /**
33  * @param hash the hash to use for HMACing
34  */
35  explicit HMAC(HashFunction* hash);
36 
37  HMAC(const HMAC&) = delete;
38  HMAC& operator=(const HMAC&) = delete;
39  private:
40  void add_data(const uint8_t[], size_t) override;
41  void final_result(uint8_t[]) override;
42  void key_schedule(const uint8_t[], size_t) override;
43 
44  std::unique_ptr<HashFunction> m_hash;
45  secure_vector<uint8_t> m_ikey, m_okey;
46  size_t m_hash_output_length;
47  size_t m_hash_block_size;
48  };
49 
50 }
51 
52 #endif
int(* final)(unsigned char *, CTX *)
#define BOTAN_PUBLIC_API(maj, min)
Definition: compiler.h:31
virtual std::string name() const =0
virtual void clear()=0
Definition: alg_id.cpp:13
virtual Key_Length_Specification key_spec() const =0
virtual MessageAuthenticationCode * clone() const =0
std::vector< T, secure_allocator< T > > secure_vector
Definition: secmem.h:65
#define BOTAN_FUTURE_INTERNAL_HEADER(hdr)
Definition: compiler.h:145
virtual size_t output_length() const =0
MechanismType hash