XOR encryption and decryption

XOREncryptionAndDecryption.swift

final class XOREncryptionAndDecryption {
    
    static func encript(_ text: String, cipher: String) -> String {
        let text = [UInt8](text.utf8)
        let cipher = [UInt8](cipher.utf8)
        var encripted = [UInt8]()
        
        for (index, item) in text.enumerated() {
            encripted.append(item ^ cipher[index])
        }
        
        return String(bytes: encripted, encoding: .utf8) ?? ""
    }
    
    static func decrypt(_ encriptedText: String, cipher: String) -> String {
        let text = [UInt8](encriptedText.utf8)
        let cipher = [UInt8](cipher.utf8)
        var decrypted = [UInt8]()
        
        for (index, item) in text.enumerated() {
            decrypted.append(item ^ cipher[index])
        }
        return String(bytes: decrypted, encoding: .utf8) ?? ""
    }
}

let encryptedText = XOREncryptionAndDecryption.encript("hello!!!", cipher: "goodbye!") // XD
let decryptedText = XOREncryptionAndDecryption.decrypt(encryptedText, cipher: "goodbye!") // hello!!!