net.sourceforge.jdpapi
Class DataProtector

java.lang.Object
  net.sourceforge.jdpapi.DataProtector

public class DataProtector
extends java.lang.Object

An interface to the Microsoft Data Protection API (DPAPI).

See MSDN for more information

Author:

Kevin Conaway

Constructor Summary

DataProtector()
Initializes the protector with no additional entropy and localMachine set to false

DataProtector(boolean localMachine)

DataProtector(byte[] entropy)

DataProtector(byte[] entropy, boolean localMachine)

Method Summary

byte[]	protect(java.lang.String input) Protect input using the Microsoft DPAPI CryptProtectData function.
java.lang.String	unprotect(byte[] input) Unprotect input using the Microsoft DPAPI CryptUnprotectData function.

Methods inherited from class java.lang.Object

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

Constructor Detail

DataProtector

public DataProtector(byte[] entropy,
                     boolean localMachine)

Parameters:

entropy - Additional entropy to include when encrypting (optional)

localMachine - If true, allow all users on the machine to decrypt a given ciphertext

DataProtector

public DataProtector(byte[] entropy)

Parameters:

entropy -

See Also:

DataProtector(byte[], boolean)

DataProtector

public DataProtector(boolean localMachine)

Parameters:

localMachine -

See Also:

DataProtector(byte[], boolean)

DataProtector

public DataProtector()

Initializes the protector with no additional entropy and localMachine set to false

See Also:

DataProtector(byte[], boolean)

Method Detail

protect

public byte[] protect(java.lang.String input)

Protect input using the Microsoft DPAPI CryptProtectData function.

See the CryptProtectData documentation for more details

Parameters:

input - Plaintext to encrypt

Returns:

ciphertext

unprotect

public java.lang.String unprotect(byte[] input)

Unprotect input using the Microsoft DPAPI CryptUnprotectData function.

See the CryptUnprotectData documentation for more details

Parameters:

input - Ciphertext

Returns:

Plaintext