把PHP中的MD5加密转换成JAVA
有人会把下面PHP的MD5加密算法转换成JAVA形式的吗?
<?php
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
$password = 'abcd';
$hash = 'bf8d0ec1c358da673b6b841e0c775355:xz';
echo getHash($password,2).'<br>'; //hash 加密
echo validateHash($password,$hash); //hash 加密验证
function getRandomString($len, $chars=null)
{
if (is_null($chars)) {
$chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
}
mt_srand(10000000*(double)microtime());
for ($i = 0, $str = '', $lc = strlen($chars)-1; $i < $len; $i++) {
$str .= $chars[mt_rand(0, $lc)];
}
return $str;
}
function getHash($password, $salt=false)
{
if (is_integer($salt)) {
$salt = getRandomString($salt);
}
return $salt===false ? md5($password) : md5($salt.$password).':'.$salt;
}
/*
* 验证密码
@param string $password
* @param string $hash
* @return bool
*/
function validateHash($password,$hash)
{
$hashArr = explode(':', $hash);
switch (count($hashArr)) {
case 1:
return getHash($password) === $hash;
case 2:
return getHash($hashArr[1] . $password) === $hashArr[0];
}
return 'Invalid hash.';
}
?>