Swift implementation

This commit is contained in:
Denis Simon 2019-01-08 21:35:15 +03:00
parent 85d0688955
commit a516f8e784
2 changed files with 34 additions and 0 deletions

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@ -16,6 +16,7 @@ Simple implementation of XOR Encryption/Decrypting in various languages, includi
- [Objective-C](Objective-C/main.m) - [Objective-C](Objective-C/main.m)
- [Python](Python/XOREncryption.py) - [Python](Python/XOREncryption.py)
- [Ruby](Ruby/xor.rb) - [Ruby](Ruby/xor.rb)
- [Swift](Swift/XOREncryption.swift)
- [Visual Basic.NET](VB.NET/XORCrypto.vb) - [Visual Basic.NET](VB.NET/XORCrypto.vb)
This implementation goes beyond the basic single-key model to use multiple keys in a particular sequence, making it that much more difficult to brute-force. This implementation goes beyond the basic single-key model to use multiple keys in a particular sequence, making it that much more difficult to brute-force.

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Swift/XOREncryption.swift Normal file
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@ -0,0 +1,33 @@
//
// XOREncryption.swift
// XOREncryption
//
// Created by Denis Simon on 2019-01-08.
//
import Foundation
extension Character {
func utf8() -> UInt8 {
let utf8 = String(self).utf8
return utf8[utf8.startIndex]
}
}
func encryptDecrypt(_ input: String) -> String {
let key = "KCQ".characters.map { $0 } //Can be any chars, and any length array
let length = key.count
var output = ""
for i in input.characters.enumerated() {
let byte = [i.element.utf8() ^ key[i.offset % length].utf8()]
output.append(String(bytes: byte, encoding: .utf8)!)
}
return output
}
let encrypted = encryptDecrypt("Hello, World!")
print("Encrypted: \(encrypted)") // output: Encrypted: &=',}k>9/5j
let decrypted = encryptDecrypt(encrypted)
print("Decrypted: \(decrypted)") // output: Decrypted: Hello, World!