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 String	CertNameToStr(int dwCertEncodingType, int dwStrType, WinCrypt.DATA_BLOB pName)	Utility method to call to Crypt32's CertNameToStr that allocates the assigns the required memory for the psz parameter based on the type mapping used, calls to CertNameToStr, and returns the received string.
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.

CertNameToStr

public static String CertNameToStr(int dwCertEncodingType,
                                   int dwStrType,
                                   WinCrypt.DATA_BLOB pName)

Utility method to call to Crypt32's CertNameToStr that allocates the assigns the required memory for the psz parameter based on the type mapping used, calls to CertNameToStr, and returns the received string.

Parameters:

dwCertEncodingType - The certificate encoding type that was used to encode the name. The message encoding type identifier, contained in the high WORD of this value, is ignored by this function.

pName - A pointer to the CERT_NAME_BLOB structure to be converted.

dwStrType - This parameter specifies the format of the output string. This parameter also specifies other options for the contents of the string.

Returns:

Returns the retrieved string.