org.alfresco.jlan.client

Class JCEPasswordEncryptor

java.lang.Object

org.alfresco.jlan.client.PasswordEncryptor

org.alfresco.jlan.client.JCEPasswordEncryptor

public class JCEPasswordEncryptor
extends PasswordEncryptor

JCE Password Encryptor Class

Provides password encryption for CIFS using the JCE framework.

Author:

gkspencer

Field Summary

Fields

Modifier and Type	Field and Description
static int	LANMAN
static int	MD4
static int	NTLM1
static int	NTLM2

Constructor Summary

Constructors

Constructor and Description
JCEPasswordEncryptor() Default constructor

Method Summary

Methods

Modifier and Type	Method and Description
boolean	checkEncryptionAlgorithms() Check if the required algorithms are available
byte[]	generateEncryptedPassword(String plainPwd, byte[] encryptKey, int alg) Encrypt the plain text password with the specified encryption key using the specified encryption algorithm.
byte[]	generateSessionKey(String plainPwd, byte[] encryptKey, int alg) Generate a session key using the specified password and key.
static String	getAlgorithmName(int alg) Return the encryption algorithm as a string
byte[]	P16(String pwd, byte[] s8) P16 encryption
protected byte[]	P24(byte[] p21, byte[] ch) P24 DES encryption

Methods inherited from class java.lang.Object

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

Field Detail

LANMAN

public static final int LANMAN

See Also:

Constant Field Values

NTLM1

public static final int NTLM1

See Also:

Constant Field Values

NTLM2

public static final int NTLM2

See Also:

Constant Field Values

MD4

public static final int MD4

See Also:

Constant Field Values

Constructor Detail

JCEPasswordEncryptor

public JCEPasswordEncryptor()

Default constructor

Method Detail

checkEncryptionAlgorithms

public boolean checkEncryptionAlgorithms()

Check if the required algorithms are available

Overrides:

checkEncryptionAlgorithms in class PasswordEncryptor

Returns:

boolean

generateEncryptedPassword

public byte[] generateEncryptedPassword(String plainPwd,
                               byte[] encryptKey,
                               int alg)
                                 throws NoSuchAlgorithmException

Encrypt the plain text password with the specified encryption key using the specified encryption algorithm.

Specified by:

generateEncryptedPassword in class PasswordEncryptor

Parameters:

plainPwd - Plaintext password string

encryptKey - byte[] Encryption key

alg - int Encryption algorithm

Returns:

byte[] Encrypted password

Throws:

NoSuchAlgorithmException - If a required encryption algorithm is not available

generateSessionKey

public byte[] generateSessionKey(String plainPwd,
                        byte[] encryptKey,
                        int alg)
                          throws NoSuchAlgorithmException

Generate a session key using the specified password and key.

Specified by:

generateSessionKey in class PasswordEncryptor

Parameters:

plainPwd - Plaintext password string

encryptKey - byte[] Encryption key

alg - int Encryption algorithm

Returns:

byte[] Encrypted password

Throws:

NoSuchAlgorithmException - If a required encryption algorithm is not available

P16

public final byte[] P16(String pwd,
         byte[] s8)
                 throws NoSuchAlgorithmException

P16 encryption

Specified by:

P16 in class PasswordEncryptor

Parameters:

pwd - java.lang.String

s8 - byte[]

Returns:

byte[]

Throws:

NoSuchAlgorithmException - If a required encryption algorithm is not available

P24

protected byte[] P24(byte[] p21,
         byte[] ch)
              throws NoSuchAlgorithmException

P24 DES encryption

Specified by:

P24 in class PasswordEncryptor

Parameters:

p21 - Plain password or hashed password bytes

ch - Challenge bytes

Returns:

Encrypted password

Throws:

NoSuchAlgorithmException - If a required encryption algorithm is not available

getAlgorithmName

public static String getAlgorithmName(int alg)

Return the encryption algorithm as a string

Parameters:

alg - int

Returns:

String