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// Copyright 2017 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.
#include <stdint.h>
#include <string>
#include "base/strings/string_piece.h"
namespace encrypted_messages {
class EncryptedMessage;
// Messages are encrypted with a secret derived from a client key pair (which
// should be generated fresh randomly for each message) and a server public
// key. The remote message recipient can decrypt the message by performing the
// same key exchange using the client public key (included in EncryptedMessage)
// to recover the shared secret.
bool EncryptSerializedMessage(const uint8_t* server_public_key,
uint32_t server_public_key_version,
base::StringPiece hkdf_label,
const std::string& message,
EncryptedMessage* encrypted_message);
// Decrypts a message that was encrypted using the above function.
// Used only by tests.
bool DecryptMessageForTesting(const uint8_t server_private_key[32],
base::StringPiece hkdf_label,
const EncryptedMessage& encrypted_message,
std::string* decrypted_serialized_message);
} // namespace encrypted_messages