Adjust Cipher protocol constraints to with IndexDistance

Sources/CryptoSwift/Cipher.swift

@@ -16,11 +16,11 @@ public protocol Cipher: class {
     ///
     /// - parameter bytes: Plaintext data
     /// - returns: Encrypted data
-    func encrypt<C: Collection>(_ bytes: C) throws -> Array<UInt8> where C.Iterator.Element == UInt8, C.IndexDistance == Int, C.Index == Int, C.SubSequence: Collection, C.SubSequence.Iterator.Element == C.Iterator.Element
+    func encrypt<C: Collection>(_ bytes: C) throws -> Array<UInt8> where C.Iterator.Element == UInt8, C.IndexDistance == Int, C.Index == Int, C.SubSequence: Collection, C.SubSequence.Iterator.Element == C.Iterator.Element, C.SubSequence.Index == C.Index, C.SubSequence.IndexDistance == C.IndexDistance
 
     /// Decrypt given bytes at once
     ///
     /// - parameter bytes: Ciphertext data
     /// - returns: Plaintext data
-    func decrypt<C: Collection>(_ bytes: C) throws -> Array<UInt8> where C.Iterator.Element == UInt8, C.IndexDistance == Int, C.Index == Int, C.SubSequence: Collection, C.SubSequence.Iterator.Element == C.Iterator.Element
+    func decrypt<C: Collection>(_ bytes: C) throws -> Array<UInt8> where C.Iterator.Element == UInt8, C.IndexDistance == Int, C.Index == Int, C.SubSequence: Collection, C.SubSequence.Iterator.Element == C.Iterator.Element, C.SubSequence.Index == C.Index, C.SubSequence.IndexDistance == C.IndexDistance
 }

Sources/CryptoSwift/UInt64+Extension.swift

@@ -9,13 +9,17 @@
 /** array of bytes */
 extension UInt64 {
 
+//    init<T: Collection>(bytes: T) where T.Iterator.Element == UInt8, T.Index == Int {
+//        self = 0
+//    }
+
     @_specialize(ArraySlice<UInt8>)
-    init<T: Collection>(bytes: T) where T.Iterator.Element == UInt8, T.IndexDistance == Int, T.Index == Int, T.SubSequence: Collection {
+    init<T: Collection>(bytes: T) where T.Iterator.Element == UInt8, T.IndexDistance == Int, T.Index == Int {
         self = UInt64(bytes: bytes, fromIndex: bytes.startIndex)
     }
 
     @_specialize(ArraySlice<UInt8>)
-    init<T: Collection>(bytes: T, fromIndex index: T.Index) where T.Iterator.Element == UInt8, T.IndexDistance == Int, T.Index == Int, T.SubSequence: Collection {
+    init<T: Collection>(bytes: T, fromIndex index: T.Index) where T.Iterator.Element == UInt8, T.IndexDistance == Int, T.Index == Int {
         let val0 = UInt64(bytes[index.advanced(by: 0)]) << 56
         let val1 = UInt64(bytes[index.advanced(by: 1)]) << 48
         let val2 = UInt64(bytes[index.advanced(by: 2)]) << 40