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//
// SingleHopPostQuantumKeyExchanging.swift
// PacketTunnel
//
// Created by Mojgan on 2024-07-15.
// Copyright © 2025 Mullvad VPN AB. All rights reserved.
//
import MullvadREST
import MullvadRustRuntime
import MullvadSettings
import MullvadTypes
import PacketTunnelCore
import WireGuardKitTypes
struct SingleHopEphemeralPeerExchanger: EphemeralPeerExchangingProtocol {
let exit: SelectedRelay
let keyExchanger: EphemeralPeerExchangeActorProtocol
let devicePrivateKey: PrivateKey
let onFinish: () -> Void
let onUpdateConfiguration: (EphemeralPeerNegotiationState) async -> Void
let enablePostQuantum: Bool
let enableDaita: Bool
init(
exit: SelectedRelay,
devicePrivateKey: PrivateKey,
keyExchanger: EphemeralPeerExchangeActorProtocol,
enablePostQuantum: Bool,
enableDaita: Bool,
onUpdateConfiguration: @escaping (EphemeralPeerNegotiationState) async -> Void,
onFinish: @escaping () -> Void
) {
self.devicePrivateKey = devicePrivateKey
self.exit = exit
self.keyExchanger = keyExchanger
self.enablePostQuantum = enablePostQuantum
self.enableDaita = enableDaita
self.onUpdateConfiguration = onUpdateConfiguration
self.onFinish = onFinish
}
func start() async {
await onUpdateConfiguration(
.single(
EphemeralPeerRelayConfiguration(
relay: exit,
configuration: EphemeralPeerConfiguration(
privateKey: devicePrivateKey,
allowedIPs: [IPAddressRange(from: "\(LocalNetworkIPs.gatewayAddress.rawValue)/32")!],
daitaParameters: nil
)
)))
keyExchanger.startNegotiation(
with: devicePrivateKey,
enablePostQuantum: enablePostQuantum,
enableDaita: enableDaita
)
}
public func receiveEphemeralPeerPrivateKey(_ ephemeralKey: PrivateKey, daitaParameters: DaitaV2Parameters?) async {
await onUpdateConfiguration(
.single(
EphemeralPeerRelayConfiguration(
relay: exit,
configuration: EphemeralPeerConfiguration(
privateKey: ephemeralKey,
preSharedKey: nil,
allowedIPs: [
IPAddressRange(from: "\(LocalNetworkIPs.defaultRouteIpV4.rawValue)/0")!,
IPAddressRange(from: "\(LocalNetworkIPs.defaultRouteIpV6.rawValue)/0")!,
],
daitaParameters: daitaParameters
)
)))
self.onFinish()
}
func receivePostQuantumKey(
_ preSharedKey: WireGuardKitTypes.PreSharedKey,
ephemeralKey: WireGuardKitTypes.PrivateKey,
daitaParameters: DaitaV2Parameters?
) async {
await onUpdateConfiguration(
.single(
EphemeralPeerRelayConfiguration(
relay: exit,
configuration: EphemeralPeerConfiguration(
privateKey: ephemeralKey,
preSharedKey: preSharedKey,
allowedIPs: [
IPAddressRange(from: "\(LocalNetworkIPs.defaultRouteIpV4.rawValue)/0")!,
IPAddressRange(from: "\(LocalNetworkIPs.defaultRouteIpV6.rawValue)/0")!,
],
daitaParameters: daitaParameters
)
)))
self.onFinish()
}
}
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