t089

//
//  ViewController.swift
//  NaceApp
//
//  Created by Tobias Haeberle on 14.12.18.
//

import UIKit

class ViewController: UITableViewController {

t089

extension Array where Element == UInt8 {
    var md5Hash: [UInt8] {
        var hash = [UInt8](repeating: 0, count: Int(CC_MD5_DIGEST_LENGTH))
        CC_MD5(self, UInt32(self.count), &hash)
        return hash
    }
    
    var hexString : String {
        return self.reduce(into: "", { $0 += String(format: "%02x", $1) })
    }

t089

import Foundation

private let ALLOWED_BYTES: [UInt8] = [
//  0           1           2           3           4           5
    0b00110000, 0b00110001, 0b00110010, 0b00110011, 0b00110100, 0b00110101,
//  6           7           8           9           A           B
    0b00110110, 0b00110111, 0b00111000, 0b00111001, 0b01000001, 0b01000010,
//  C           D           E           D           G           H
    0b01000011, 0b01000100, 0b01000101, 0b01000110, 0b01000111, 0b01001000,
//  I           J           K           L           M           N