Equivalent of PHP's crypt function in Java

Question

I am migrating my PHP code to Google App Engine - Java.
So I need an equivalent of PHP\'s crypt function in Java,
since I have stored all the passwords of registered

Answer 1

You have to know what implementation of PHP crypt has been used (MD5? SHA256? SHA512?) because there are several, depending on your OS : http://php.net/manual/fr/function.crypt.php

The Java equivalent class is MessageDigest. When you create an instance of this class, you provide the hash algorithm, for example :

MessageDigest md = MessageDigest.getInstance("MD5");
MessageDigest md2 = MessageDigest.getInstance("SHA-256");
MessageDigest md3 = MessageDigest.getInstance("SHA-512");
// etc.
byte[] encryptedPassword = md.digest("yourPassword".getBytes());