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
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
|
/*
* Copyright (c) 2017-2019 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include <hicn/transport/errors/runtime_exception.h>
#include <hicn/transport/utils/membuf.h>
#include <iomanip>
extern "C" {
#include <openssl/evp.h>
}
namespace transport {
namespace auth {
typedef const EVP_MD *(*CryptoHashEVP)(void);
enum class CryptoHashType : uint8_t {
UNKNOWN,
SHA256,
SHA512,
BLAKE2B512,
BLAKE2S256,
};
class CryptoHash {
public:
// Constructors
CryptoHash();
CryptoHash(const CryptoHash &other);
CryptoHash(CryptoHash &&other);
CryptoHash(CryptoHashType hash_type);
CryptoHash(const uint8_t *hash, std::size_t size, CryptoHashType hash_type);
CryptoHash(const std::vector<uint8_t> &hash, CryptoHashType hash_type);
// Destructor
~CryptoHash() = default;
// Operators
CryptoHash &operator=(const CryptoHash &other);
bool operator==(const CryptoHash &other) const;
// Compute the hash of given buffer
void computeDigest(const uint8_t *buffer, std::size_t len);
void computeDigest(const std::vector<uint8_t> &buffer);
// Compute the hash of given membuf
void computeDigest(const utils::MemBuf *buffer);
// Return the computed hash
std::vector<uint8_t> getDigest() const;
// Return the computed hash as a string
std::string getStringDigest() const;
// Return hash type
CryptoHashType getType() const;
// Return hash size
std::size_t getSize() const;
// Change hash type
void setType(CryptoHashType hash_type);
// Print hash to stdout
void display();
// Reset hash
void reset();
// Return OpenSSL EVP function associated to a given hash type
static CryptoHashEVP getEVP(CryptoHashType hash_type);
// Return hash size
static std::size_t getSize(CryptoHashType hash_type);
// Compare two raw buffers
static bool compareDigest(const uint8_t *h1, const uint8_t *h2,
CryptoHashType hash_type);
private:
CryptoHashType digest_type_;
std::vector<uint8_t> digest_;
std::size_t digest_size_;
};
} // namespace auth
} // namespace transport
|
