blob: c7ceac01e62a8aab444d3aa4dad2c60eb2b2fce0 (
plain)
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
|
/*
* Blake2b
* (C) 2016 cynecx
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
#ifndef BOTAN_BLAKE2B_H__
#define BOTAN_BLAKE2B_H__
#include <botan/hash.h>
#include <string>
#include <memory>
namespace Botan {
enum blake2b_constant {
BLAKE2B_BLOCKBYTES = 128,
BLAKE2B_OUTBYTES = 64,
BLAKE2B_IVU64COUNT = 8
};
/**
* BLAKE2B
*/
class BOTAN_DLL Blake2b final : public HashFunction
{
public:
/**
* @param output_bits the output size of Blake2b in bits
*/
explicit Blake2b(size_t output_bits = 512);
size_t hash_block_size() const override { return BLAKE2B_BLOCKBYTES; }
size_t output_length() const override { return m_output_bits / 8; }
HashFunction* clone() const override;
std::string name() const override;
void clear() override;
std::unique_ptr<HashFunction> copy_state() const override;
private:
void add_data(const uint8_t input[], size_t length) override;
void final_result(uint8_t out[]) override;
inline void state_init();
inline void increment_counter(const uint64_t inc);
void compress(bool lastblock = false);
size_t m_output_bits;
secure_vector<uint8_t> m_buffer;
size_t m_buflen;
secure_vector<uint64_t> m_H;
uint64_t m_T[2];
uint64_t m_F[2];
};
}
#endif
|
