blob: b8c50d55af73660a44a6b0bf7596b451a5194d7a (
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
|
// Copyright 2020 Google LLC
//
// 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.
//
///////////////////////////////////////////////////////////////////////////////
#ifndef TINK_SUBTLE_STATEFUL_HMAC_BORINGSSL_H_
#define TINK_SUBTLE_STATEFUL_HMAC_BORINGSSL_H_
#include <memory>
#include <string>
#include <utility>
#include "openssl/evp.h"
#include "openssl/hmac.h"
#include "tink/internal/ssl_unique_ptr.h"
#include "tink/subtle/common_enums.h"
#include "tink/subtle/mac/stateful_mac.h"
#include "tink/util/secret_data.h"
#include "tink/util/status.h"
#include "tink/util/statusor.h"
namespace crypto {
namespace tink {
namespace subtle {
// A BoringSSL HMAC implementation of Stateful Mac interface.
class StatefulHmacBoringSsl : public subtle::StatefulMac {
public:
static util::StatusOr<std::unique_ptr<StatefulMac>> New(
HashType hash_type, uint32_t tag_size, const util::SecretData& key_value);
util::Status Update(absl::string_view data) override;
util::StatusOr<std::string> Finalize() override;
private:
// Minimum HMAC key size in bytes.
static constexpr size_t kMinKeySize = 16;
StatefulHmacBoringSsl(uint32_t tag_size, internal::SslUniquePtr<HMAC_CTX> ctx)
: hmac_context_(std::move(ctx)), tag_size_(tag_size) {}
const internal::SslUniquePtr<HMAC_CTX> hmac_context_;
const uint32_t tag_size_;
};
class StatefulHmacBoringSslFactory : public subtle::StatefulMacFactory {
public:
StatefulHmacBoringSslFactory(HashType hash_type, uint32_t tag_size,
const util::SecretData& key_value);
util::StatusOr<std::unique_ptr<StatefulMac>> Create() const override;
private:
const HashType hash_type_;
const uint32_t tag_size_;
const util::SecretData key_value_;
};
} // namespace subtle
} // namespace tink
} // namespace crypto
#endif // TINK_SUBTLE_STATEFUL_HMAC_BORINGSSL_H_
|
