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

Constructor Summary

Constructors

Constructor and Description
MD5Crypt()

Method Summary

Modifier and Type	Method and Description
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
static java.lang.String	getSalt(java.lang.String a_password)
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!!!
boolean	verify(java.lang.String a_password, java.lang.String a_hash)

Methods inherited from class java.lang.Object

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

Constructor Detail

MD5Crypt

public MD5Crypt()

Method Detail

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

getSalt

public static final java.lang.String getSalt(java.lang.String a_password)

verify

public final boolean verify(java.lang.String a_password,
                            java.lang.String a_hash)
                     throws java.security.NoSuchAlgorithmException

Throws:

java.security.NoSuchAlgorithmException

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