mirror of
https://github.com/klzgrad/naiveproxy.git
synced 2024-11-24 06:16:30 +03:00
95 lines
2.8 KiB
C++
95 lines
2.8 KiB
C++
// Copyright 2015 The Chromium Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style license that can be
|
|
// found in the LICENSE file.
|
|
|
|
#ifndef CRYPTO_AEAD_H_
|
|
#define CRYPTO_AEAD_H_
|
|
|
|
#include <stddef.h>
|
|
#include <stdint.h>
|
|
|
|
#include <string>
|
|
#include <vector>
|
|
|
|
#include "base/containers/span.h"
|
|
#include "base/memory/raw_ptr.h"
|
|
#include "base/strings/string_piece.h"
|
|
#include "crypto/crypto_export.h"
|
|
#include "third_party/abseil-cpp/absl/types/optional.h"
|
|
|
|
struct evp_aead_st;
|
|
|
|
namespace crypto {
|
|
|
|
// This class exposes the AES-128-CTR-HMAC-SHA256 and AES_256_GCM AEAD. Note
|
|
// that there are two versions of most methods: an historical version based
|
|
// around |StringPiece| and a more modern version that takes |base::span|.
|
|
// Prefer the latter in new code.
|
|
class CRYPTO_EXPORT Aead {
|
|
public:
|
|
enum AeadAlgorithm {
|
|
AES_128_CTR_HMAC_SHA256,
|
|
AES_256_GCM,
|
|
AES_256_GCM_SIV,
|
|
CHACHA20_POLY1305
|
|
};
|
|
|
|
explicit Aead(AeadAlgorithm algorithm);
|
|
Aead(const Aead&) = delete;
|
|
Aead& operator=(const Aead&) = delete;
|
|
~Aead();
|
|
|
|
// Note that Init keeps a reference to the data pointed to by |key| thus that
|
|
// data must outlive this object.
|
|
void Init(base::span<const uint8_t> key);
|
|
|
|
// Note that Init keeps a reference to the data pointed to by |key| thus that
|
|
// data must outlive this object.
|
|
void Init(const std::string* key);
|
|
|
|
std::vector<uint8_t> Seal(base::span<const uint8_t> plaintext,
|
|
base::span<const uint8_t> nonce,
|
|
base::span<const uint8_t> additional_data) const;
|
|
|
|
bool Seal(base::StringPiece plaintext,
|
|
base::StringPiece nonce,
|
|
base::StringPiece additional_data,
|
|
std::string* ciphertext) const;
|
|
|
|
absl::optional<std::vector<uint8_t>> Open(
|
|
base::span<const uint8_t> ciphertext,
|
|
base::span<const uint8_t> nonce,
|
|
base::span<const uint8_t> additional_data) const;
|
|
|
|
bool Open(base::StringPiece ciphertext,
|
|
base::StringPiece nonce,
|
|
base::StringPiece additional_data,
|
|
std::string* plaintext) const;
|
|
|
|
size_t KeyLength() const;
|
|
|
|
size_t NonceLength() const;
|
|
|
|
private:
|
|
bool Seal(base::span<const uint8_t> plaintext,
|
|
base::span<const uint8_t> nonce,
|
|
base::span<const uint8_t> additional_data,
|
|
uint8_t* out,
|
|
size_t* output_length,
|
|
size_t max_output_length) const;
|
|
|
|
bool Open(base::span<const uint8_t> ciphertext,
|
|
base::span<const uint8_t> nonce,
|
|
base::span<const uint8_t> additional_data,
|
|
uint8_t* out,
|
|
size_t* output_length,
|
|
size_t max_output_length) const;
|
|
|
|
absl::optional<base::span<const uint8_t>> key_;
|
|
raw_ptr<const evp_aead_st> aead_;
|
|
};
|
|
|
|
} // namespace crypto
|
|
|
|
#endif // CRYPTO_AEAD_H_
|