fix matching to lastsignedMail

enzevalos_iphone/mail/IncomingMail.swift

@@ -267,8 +267,8 @@ class IncomingMail {
         }
         let encState = self.cryptoObj?.encryptionState.rawValue ?? 0
         
-        var lastsignedDate: Date? = nil // TODO: Remove from PublicKeyProperty -> Update this in Record file...
-        if let sigState = self.cryptoObj?.signatureState, sigState == .ValidSignature {
+        var lastsignedDate: Date? = nil
+        if let sigState = self.cryptoObj?.signatureState, sigState == .ValidSignature{
             lastsignedDate = self.date
         }
         var usedAddr = [AddressProperties]()
@@ -278,7 +278,11 @@ class IncomingMail {
         
         var autocryptPK = [PublicKeyProperties]()
         for fpr in newAutocrypPublicKeys {
-            let pk = PublicKeyProperties(fingerprint: fpr, cryptoProtocol: .PGP, origin: .AutocryptHeader, preferEncryption: autocrypt?.prefer_encryption, lastSeenInAutocryptHeader: date, lastSeenSignedMail: nil, secretKeyProperty: nil, usedAddresses: usedAddr)
+            var signed: Date? =  nil
+            if let sigendKeys = self.cryptoObj?.signedKeys, sigendKeys.contains(fpr) {
+                signed = lastsignedDate
+            }
+            let pk = PublicKeyProperties(fingerprint: fpr, cryptoProtocol: .PGP, origin: .AutocryptHeader, preferEncryption: autocrypt?.prefer_encryption, lastSeenInAutocryptHeader: date, lastSeenSignedMail: signed, secretKeyProperty: nil, usedAddresses: usedAddr)
             autocryptPK.append(pk)
         }