Package com.sun.jna.platform.win32

Class Crypt32Util

java.lang.Object

com.sun.jna.platform.win32.Crypt32Util

public abstract class Crypt32Util
extends Object

Crypt32 utility API.

Author:

dblock[at]dblock.org

Constructor Summary

Constructors

Constructor	Description
Crypt32Util()

Method Summary

Modifier and Type	Method	Description
static byte[]	cryptProtectData(byte[] data)	Protect a blob of data.
static byte[]	cryptProtectData(byte[] data, byte[] entropy, int flags, String description, WinCrypt.CRYPTPROTECT_PROMPTSTRUCT prompt)	Protect a blob of data.
static byte[]	cryptProtectData(byte[] data, int flags)	Protect a blob of data with optional flags.
static byte[]	cryptUnprotectData(byte[] data)	Unprotect a blob of data.
static byte[]	cryptUnprotectData(byte[] data, byte[] entropy, int flags, WinCrypt.CRYPTPROTECT_PROMPTSTRUCT prompt)	Unprotect a blob of data.
static byte[]	cryptUnprotectData(byte[] data, int flags)	Unprotect a blob of data.

Methods inherited from class java.lang.Object

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

Constructor Detail

Crypt32Util

public Crypt32Util()

Method Detail

cryptProtectData

public static byte[] cryptProtectData(byte[] data)

Protect a blob of data.

Parameters:

data - Data to protect.

Returns:

Protected data.

cryptProtectData

public static byte[] cryptProtectData(byte[] data,
                                      int flags)

Protect a blob of data with optional flags.

Parameters:

data - Data to protect.

flags - Optional flags, eg. CRYPTPROTECT_LOCAL_MACHINE | CRYPTPROTECT_UI_FORBIDDEN.

Returns:

Protected data.

cryptProtectData

public static byte[] cryptProtectData(byte[] data,
                                      byte[] entropy,
                                      int flags,
                                      String description,
                                      WinCrypt.CRYPTPROTECT_PROMPTSTRUCT prompt)

Protect a blob of data.

Parameters:

data - Data to protect.

entropy - Optional entropy.

flags - Optional flags.

description - Optional description.

prompt - Prompt structure.

Returns:

Protected bytes.

cryptUnprotectData

public static byte[] cryptUnprotectData(byte[] data)

Unprotect a blob of data.

Parameters:

data - Data to unprotect.

Returns:

Unprotected blob of data.

cryptUnprotectData

public static byte[] cryptUnprotectData(byte[] data,
                                        int flags)

Unprotect a blob of data.

Parameters:

data - Data to unprotect.

flags - Optional flags, eg. CRYPTPROTECT_UI_FORBIDDEN.

Returns:

Unprotected blob of data.

cryptUnprotectData

public static byte[] cryptUnprotectData(byte[] data,
                                        byte[] entropy,
                                        int flags,
                                        WinCrypt.CRYPTPROTECT_PROMPTSTRUCT prompt)

Unprotect a blob of data.

Parameters:

data - Data to unprotect.

entropy - Optional entropy.

flags - Optional flags.

prompt - Optional prompt structure.

Returns:

Unprotected blob of data.