blob: d188f9cf4da9299f285d0528a0581b0825389e43 (
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
|
// Copyright 2022 Huawei Cloud Computing Technology Co., Ltd.
//
// 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.
#include "src/buildtool/crypto/hash_impl_sha1.hpp"
#include <array>
#include <cstdint>
#include <utility> // std::move
#include "openssl/sha.h"
/// \brief Hash implementation for SHA-1
class HashImplSha1 final : public Hasher::IHashImpl {
public:
HashImplSha1() { initialized_ = SHA1_Init(&ctx_) == 1; }
auto Update(std::string const& data) noexcept -> bool final {
return initialized_ and
SHA1_Update(&ctx_, data.data(), data.size()) == 1;
}
auto Finalize() && noexcept -> std::optional<std::string> final {
if (initialized_) {
auto out = std::array<std::uint8_t, SHA_DIGEST_LENGTH>{};
if (SHA1_Final(out.data(), &ctx_) == 1) {
return std::string{out.begin(), out.end()};
}
}
return std::nullopt;
}
auto Compute(std::string const& data) && noexcept -> std::string final {
if (Update(data)) {
auto digest = std::move(*this).Finalize();
if (digest) {
return *digest;
}
}
FatalError();
return {};
}
[[nodiscard]] auto GetHashLength() const noexcept -> size_t final {
return SHA_DIGEST_LENGTH * kCharsPerNumber;
}
private:
SHA_CTX ctx_{};
bool initialized_{};
};
/// \brief Factory for SHA-1 implementation
auto CreateHashImplSha1() -> std::unique_ptr<Hasher::IHashImpl> {
return std::make_unique<HashImplSha1>();
}
|
