mirror of
https://github.com/kidfromjupiter/nearby.git
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64 lines
2.2 KiB
C++
64 lines
2.2 KiB
C++
// Copyright 2022 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef THIRD_PARTY_NEARBY_FASTPAIR_HANDSHAKE_FAST_PAIR_DATA_ENCRYPTOR_H_
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#define THIRD_PARTY_NEARBY_FASTPAIR_HANDSHAKE_FAST_PAIR_DATA_ENCRYPTOR_H_
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#include <stddef.h>
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#include <stdint.h>
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#include <array>
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#include <functional>
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#include <optional>
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#include <vector>
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#include "absl/functional/any_invocable.h"
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#include "fastpair/common/constant.h"
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#include "fastpair/crypto/decrypted_passkey.h"
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#include "fastpair/crypto/decrypted_response.h"
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namespace nearby {
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namespace fastpair {
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// Holds a secret key for a device and has methods to encrypt bytes, decrypt
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// response and decrypt passkey.
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class FastPairDataEncryptor {
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public:
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virtual ~FastPairDataEncryptor() = default;
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// Encrypts bytes with the stored secret key.
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virtual std::array<uint8_t, kAesBlockByteSize> EncryptBytes(
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const std::array<uint8_t, kAesBlockByteSize>& bytes_to_encrypt) const = 0;
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// Return stored PublicKey
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virtual std::optional<std::array<uint8_t, 64>> GetPublicKey() const = 0;
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// Decrypt and parse decrypted response bytes with the stored secret key.
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virtual void ParseDecryptResponse(
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const std::vector<uint8_t>& encrypted_response_bytes,
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absl::AnyInvocable<void(const std::optional<DecryptedResponse>)>
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callback) = 0;
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// Decrypt and parse decrypted passkey bytes with the stored secret key.
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virtual void ParseDecryptPasskey(
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const std::vector<uint8_t>& encrypted_passkey_bytes,
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absl::AnyInvocable<void(const std::optional<DecryptedPasskey>)>
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callback) = 0;
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};
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} // namespace fastpair
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} // namespace nearby
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#endif // THIRD_PARTY_NEARBY_FASTPAIR_HANDSHAKE_FAST_PAIR_DATA_ENCRYPTOR_H_
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