Allow limited key validity window for authenticated keys (#252)

SecretKit/Common/Types/SecretStore.swift

@@ -9,7 +9,9 @@ public protocol SecretStore: ObservableObject, Identifiable {
     var name: String { get }
     var secrets: [SecretType] { get }
 
-    func sign(data: Data, with secret: SecretType, for provenance: SigningRequestProvenance) throws -> Data
+    func sign(data: Data, with secret: SecretType, for provenance: SigningRequestProvenance) throws -> SignedData
+
+    func persistAuthentication(secret: SecretType, forDuration duration: TimeInterval) throws
 
 }
 

SecretKit/Common/Types/SignedData.swift

@@ -0,0 +1,13 @@
+import Foundation
+
+public struct SignedData {
+
+    public let data: Data
+    public let requiredAuthentication: Bool
+
+    public init(data: Data, requiredAuthentication: Bool) {
+        self.data = data
+        self.requiredAuthentication = requiredAuthentication
+    }
+
+}