Exposed masterkey version in Cryptor

Author: tobihagemann

Sources/CryptomatorCryptoLib/Cryptor.swift

@@ -66,6 +66,10 @@ public class Cryptor {
 	static let cleartextChunkSize = 32 * 1024
 	static let ciphertextChunkSize = kCCBlockSizeAES128 + cleartextChunkSize + Int(CC_SHA256_DIGEST_LENGTH)
 
+	public var masterkeyVersion: Int {
+		return masterkey.version
+	}
+
 	private let masterkey: Masterkey
 	private let cryptoSupport: CryptoSupport