kailin/app/Servers/Encrypts/Simple.php

<?php namespace App\Servers\Encrypts;

/**
 * 自定义简单对称加密
 *
 * @author    刘相欣
 */
class Simple
{


	/**
	 * 简单对称加密算法之加密
	 * 
	 * @param	String	$contents		需要加密的内容
	 * 
	 * @return	String
	 * 
	 * */
	public function encode($contents)
	{
		//先用base64编码
		$contents			= base64_encode($contents);
		//替换掉符号
		$encrypted			= str_replace(['=', '+', '/'], [md5('ZZ22'), md5('Z22Z'), md5('XGHJ')], $contents);
		//返回结果
		return				$encrypted;
	}

	/**
	 * 简单对称加密算法之解密
	 * 
	 * @param	String		$encrypted		需要解密的内容
	 * 
	 * @return	String
	 * 
	 * */
	public function decode($encrypted)
	{
		//替换掉符号
		$encrypted			= str_replace([md5('ZZ22'), md5('Z22Z'), md5('XGHJ')], ['=', '+', '/'], $encrypted);
		//先用base64编码
		$decrypted			= base64_decode($encrypted);
		//返回结果
		return				$decrypted;
	}
}