anon.crypto
Class MD5Crypt

java.lang.Object
  anon.crypto.MD5Crypt

All Implemented Interfaces:

ICrypt

public class MD5Crypt
extends java.lang.Object
implements ICrypt

Class containing static methods for encrypting passwords in FreeBSD md5 style.

Version:

1.0

Author:

Nick Johnson

Field Summary

private static java.lang.String	itoa64
private static java.lang.String	magic

Constructor Summary

MD5Crypt()

Method Summary

java.lang.String	crypt(java.lang.String password) Encrypts a password using FreeBSD-style md5-based encryption
java.lang.String	crypt(java.lang.String password, java.lang.String salt) Encrypts a password using FreeBSD-style md5-based encryption
private static java.lang.String	cryptTo64(int value, int length)
static java.lang.String	simpleHash(java.lang.String inputString) Takes an arbitrary String as input, and returns its MD5 hash value Note: NOT cryptographically secure, do not use this method to store passwords etc!!!

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

magic

private static final java.lang.String magic

See Also:

Constant Field Values

itoa64

private static final java.lang.String itoa64

See Also:

Constant Field Values

Constructor Detail

MD5Crypt

public MD5Crypt()

Method Detail

cryptTo64

private static java.lang.String cryptTo64(int value,
                                          int length)

simpleHash

public static java.lang.String simpleHash(java.lang.String inputString)

Takes an arbitrary String as input, and returns its MD5 hash value Note: NOT cryptographically secure, do not use this method to store passwords etc!!!

Parameters:

inputString - String: any String

Returns:

String: the Base64-encoded md5 hash, or empty string on error

crypt

public final java.lang.String crypt(java.lang.String password)
                             throws java.security.NoSuchAlgorithmException

Encrypts a password using FreeBSD-style md5-based encryption

Specified by:

crypt in interface ICrypt

Parameters:

password - The cleartext password to be encrypted

Returns:

The encrypted password, or an empty string on error

Throws:

java.security.NoSuchAlgorithmException - if java.security does not support MD5

crypt

public final java.lang.String crypt(java.lang.String password,
                                    java.lang.String salt)
                             throws java.security.NoSuchAlgorithmException

Encrypts a password using FreeBSD-style md5-based encryption

Specified by:

crypt in interface ICrypt

Parameters:

password - The cleartext password to be encrypted

salt - The salt used to add some entropy to the encryption

Returns:

The encrypted password, or an empty string on error

Throws:

java.security.NoSuchAlgorithmException - if java.security does not support MD5