Botan 2.19.3
Crypto and TLS for C&
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
16namespace 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
virtual size_t output_length() const =0
HMAC(const HMAC &)=delete
HMAC & operator=(const HMAC &)=delete
virtual MessageAuthenticationCode * clone() const =0
virtual std::string name() const =0
virtual void clear()=0
virtual Key_Length_Specification key_spec() const =0
int(* final)(unsigned char *, CTX *)
#define BOTAN_PUBLIC_API(maj, min)
Definition compiler.h:31
#define BOTAN_FUTURE_INTERNAL_HEADER(hdr)
Definition compiler.h:136
std::vector< T, secure_allocator< T > > secure_vector
Definition secmem.h:65
MechanismType hash