Algorithm for password encryption

Encryption principle: Using different encryption algorithms to add salt encryption processing of strings.

• To prevent the ciphertext from being MD5 by the dictionary for reverse brute force cracking.
• Encryption Algorithm (RFC 4357) published by the U.S. National Security Agency (NSA) is used to encrypt the encryption algorithm that is created by itself, to avoid security vulnerabilities.

<?php/** * Password encryption algorithm * Encrypt different encryption algorithms for various types of passwords * @author yagas<[email protected]> * @url http://blog.c Sdn.net/yagas * @version 0.1 * @example: * $passwd = new Tpassword (Tpassword::userpassword); * $passwd->encode ("123456"); * $passwd->ckechpassword ("xxxxxx", "123456"); */ class tpassword extends CModel {    /** * Password Salt length * @var int */    Private $_satlslen=5;/** * Salt offset value in ciphertext * @var int */    Private $_offset=Ten;/** * Cryptographic algorithm name * @var string */    Private $_passwordtype;/** * Member Login password * @var string * *    ConstUserPassword ="sha224";/** * Login password * @var string * *    ConstAdminPassword ="snefru256";/** * Pay password * @var string */    ConstPaypassword ="haval128,3"; Public  function __construct( $passwordType ) {        $this->_passwordtype =$passwordType; } Public  function attributenames() {        return Array(); }/** * Encrypt strings * @param string $password strings that need to be encrypted * @param string $satls crypto Salt *  @return String cipher * /     Public  function encode( $password, $satls=null) {        if(Is_null ($satls) ) {$satls="'; while(Strlen ($satls) >$this->_satlslen) {$i= Mt_rand ( $, -);$satls. = Chr ($i); }        }$password= Hash ($this->_passwordtype,$password.$satls);$password= MD5 ($password);$newPassword= substr ($password,0,$this->_offset);$newPassword. = Strtolower ($satls) . Substr$password,$this->_offset);returnSubstr$newPassword,0, +); }/** * Verify that the password is correct * @param string $securtyString key * @param string $password password * @return Boolean * /     Public  function checkpassword( $securtyString, $password ) {        $satls= substr ($securtyString,$this->_offset,$this->_satlslen);$password=$this->encode ($password, Strtoupper ($satls) );return $securtyString==$password; }}

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Algorithm for password encryption