xorcrypto

xorcrypto.swift

let text = [UInt8]("hello!!!".utf8)
let cipher = [UInt8]("good".utf8)

var encrypted = [UInt8]()

// encrypt bytes
for t in enumerate(text) {
    encrypted.append(t.element ^ cipher[t.index%cipher.count])
}

println(encrypted)

var decrypted = [UInt8]()

// decrypt bytes
for t in enumerate(encrypted) {
    decrypted.append(t.element ^ cipher[t.index%cipher.count])
}

String(bytes: decrypted, encoding: NSUTF8StringEncoding)