blob: d1fd15f2495329a4ad3dbf37ec28d30fb555ea36 (
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
64
65
66
67
68
69
70
71
72
73
74
75
76
|
/*
* RTSS (threshold secret sharing)
* (C) 2009 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
#ifndef BOTAN_RTSS_H_
#define BOTAN_RTSS_H_
#include <botan/secmem.h>
#include <vector>
namespace Botan {
class RandomNumberGenerator;
/**
* A split secret, using the format from draft-mcgrew-tss-03
*/
class BOTAN_PUBLIC_API(2,0) RTSS_Share
{
public:
/**
* @param M the number of shares needed to reconstruct
* @param N the number of shares generated
* @param secret the secret to split
* @param secret_len the length of the secret
* @param identifier the 16 byte share identifier
* @param rng the random number generator to use
*/
static std::vector<RTSS_Share>
split(uint8_t M, uint8_t N,
const uint8_t secret[], uint16_t secret_len,
const uint8_t identifier[16],
RandomNumberGenerator& rng);
/**
* @param shares the list of shares
*/
static secure_vector<uint8_t>
reconstruct(const std::vector<RTSS_Share>& shares);
RTSS_Share() = default;
/**
* @param hex_input the share encoded in hexadecimal
*/
explicit RTSS_Share(const std::string& hex_input);
/**
* @return hex representation
*/
std::string to_string() const;
/**
* @return share identifier
*/
uint8_t share_id() const;
/**
* @return size of this share in bytes
*/
size_t size() const { return m_contents.size(); }
/**
* @return if this TSS share was initialized or not
*/
bool initialized() const { return (m_contents.size() > 0); }
private:
secure_vector<uint8_t> m_contents;
};
}
#endif
|
