From 8429fc35365f30fb1fb5e882c56550da753ba177 Mon Sep 17 00:00:00 2001
From: Niels Andriesse <andriesseniels@gmail.com>
Date: Mon, 23 Sep 2019 14:43:12 +1000
Subject: [PATCH] Partially implement linking request validation

---
 .../src/Loki/API/Multi Device/LokiDeviceLinkingSession.swift | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/SignalServiceKit/src/Loki/API/Multi Device/LokiDeviceLinkingSession.swift b/SignalServiceKit/src/Loki/API/Multi Device/LokiDeviceLinkingSession.swift
index 8c69806ad..a0201317a 100644
--- a/SignalServiceKit/src/Loki/API/Multi Device/LokiDeviceLinkingSession.swift	
+++ b/SignalServiceKit/src/Loki/API/Multi Device/LokiDeviceLinkingSession.swift	
@@ -1,3 +1,4 @@
+import Curve25519Kit
 import PromiseKit
 
 @objc (LKDeviceLinkingSession)
@@ -41,6 +42,8 @@ public final class LokiDeviceLinkingSession : NSObject {
     
     // MARK: Private API
     private func isValid(_ deviceLink: LokiDeviceLink) -> Bool {
-        return true // TODO: Implement
+        let signature = deviceLink.slave.signature!
+        let publicKey = Data(hex: deviceLink.slave.hexEncodedPublicKey)
+        return try? Ed25519.verifySignature(signature, publicKey: publicKey, data: Data()) ?? false // TODO: Data
     }
 }