blob: 7fe37ec50070accbbd52ff978ac0b9ff10d34769 (
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
77
78
79
80
81
82
83
84
85
86
87
|
#pragma once
#include "storage.h"
#include <openssl/evp.h>
using std::nullopt;
using std::optional;
using std::shared_ptr;
namespace erebos {
class PublicKey
{
PublicKey(EVP_PKEY * key):
key(key, EVP_PKEY_free) {}
public:
static optional<PublicKey> load(const Ref &);
const shared_ptr<EVP_PKEY> key;
};
class SecretKey
{
SecretKey(EVP_PKEY * key, const Stored<PublicKey> & pub):
key(key, EVP_PKEY_free), pub(pub) {}
private:
const shared_ptr<EVP_PKEY> key;
Stored<PublicKey> pub;
};
class Signature
{
public:
static optional<Signature> load(const Ref &);
bool verify(const Ref &) const;
Stored<PublicKey> key;
vector<uint8_t> sig;
};
template<typename T>
class Signed
{
public:
static optional<Signed<T>> load(const Ref &);
bool isSignedBy(const Stored<PublicKey> &) const;
const Stored<T> data;
const vector<Stored<Signature>> sigs;
};
template<typename T>
optional<Signed<T>> Signed<T>::load(const Ref & ref)
{
auto rec = ref->asRecord();
if (!rec)
return nullopt;
auto data = rec->item("SDATA").as<T>();
if (!data)
return nullopt;
vector<Stored<Signature>> sigs;
for (auto item : rec->items("sig"))
if (auto sig = item.as<Signature>())
if (sig.value()->verify(data.value().ref))
sigs.push_back(sig.value());
return Signed {
.data = data.value(),
.sigs = sigs,
};
}
template<typename T>
bool Signed<T>::isSignedBy(const Stored<PublicKey> & key) const
{
for (const auto & sig : sigs)
if (sig->key == key)
return true;
return false;
}
}
|