zhangv

<?php

class UrlShortener{
	private static $base = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';//the real base should not be easy to guess
	private static $len = 5;
	private $salt = 0; //simple salt strategy - just shift the base
	public function __construct($salt = 0){
		$this->salt = $salt;
	}

zhangv

function convertPKCS1toPKCS8($pkcs1){
		$start_key = $pkcs1;
		$start_key = str_replace('-----BEGIN RSA PUBLIC KEY-----', '', $start_key);
		$start_key = trim(str_replace('-----END RSA PUBLIC KEY-----', '', $start_key));
		$key = 'MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8A' . str_replace("\n", '', $start_key);
		$key = "-----BEGIN PUBLIC KEY-----\n" . wordwrap($key, 64, "\n", true) . "\n-----END PUBLIC KEY-----";
		return $key;
	}