[fix] Derive symmetric key correctly

seemoo-lab · Oct 16, 2023 · 7d72fa1 · 7d72fa1
1 parent 6eb2822
commit 7d72fa1
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/OpenHaystack/OpenHaystack/HaystackApp/Model/Accessory.swift b/OpenHaystack/OpenHaystack/HaystackApp/Model/Accessory.swift
@@ -214,7 +214,7 @@ class Accessory: ObservableObject, Codable, Identifiable, Equatable, Hashable {
             /// Derive FindMyKeys until we have symmetric key from one week before now
             while self.lastDerivationTimestamp < Date() - TimeInterval(7 * 24 * 60 * 60) {
                 self.lastDerivationTimestamp.addTimeInterval(self.updateInterval)
-                self.oldestRelevantSymmetricKey = Accessory.kdf(inputData: self.symmetricKey, sharedInfo: "update".data(using: .ascii)!, bytesToReturn: 32)
+                self.oldestRelevantSymmetricKey = Accessory.kdf(inputData: self.oldestRelevantSymmetricKey, sharedInfo: "update".data(using: .ascii)!, bytesToReturn: 32)
             }
 
             /// we need to generate Keys from seven days in the past until now and 10 extra keys in case of desynchronization