org.alfresco.jlan.client

Class PasswordEncryptor

java.lang.Object

org.alfresco.jlan.client.PasswordEncryptor

Direct Known Subclasses:

JCEPasswordEncryptor

public abstract class PasswordEncryptor
extends java.lang.Object

Password Encryptor Abstract Class

Generates LanMan and NTLMv1 encrypted passwords from the plain text password and challenge key.

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
PasswordEncryptor() Default constructor

Method Summary

Methods

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

PasswordEncryptor

public PasswordEncryptor()

Default constructor

Method Detail

checkEncryptionAlgorithms

public boolean checkEncryptionAlgorithms()

Check if the required algorithms are available

Returns:

boolean

generateEncryptedPassword

public abstract byte[] generateEncryptedPassword(java.lang.String plainPwd,
                               byte[] encryptKey,
                               int alg)
                                          throws java.security.NoSuchAlgorithmException

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

Parameters:

plainPwd - Plaintext password string

encryptKey - byte[] Encryption key

alg - int Encryption algorithm

Returns:

byte[] Encrypted password

Throws:

java.security.NoSuchAlgorithmException - If a required encryption algorithm is not available

generateSessionKey

public abstract byte[] generateSessionKey(java.lang.String plainPwd,
                        byte[] encryptKey,
                        int alg)
                                   throws java.security.NoSuchAlgorithmException

Generate a session key using the specified password and key.

Parameters:

plainPwd - Plaintext password string

encryptKey - byte[] Encryption key

alg - int Encryption algorithm

Returns:

byte[] Encrypted password

Throws:

java.security.NoSuchAlgorithmException - If a required encryption algorithm is not available

P16

public abstract byte[] P16(java.lang.String pwd,
         byte[] s8)
                    throws java.security.NoSuchAlgorithmException

P16 encryption

Parameters:

pwd - java.lang.String

s8 - byte[]

Returns:

byte[]

Throws:

java.security.NoSuchAlgorithmException - If a required encryption algorithm is not available

P24

protected abstract byte[] P24(byte[] p21,
         byte[] ch)
                       throws java.security.NoSuchAlgorithmException

P24 DES encryption

Parameters:

p21 - Plain password or hashed password bytes

ch - Challenge bytes

Returns:

Encrypted password

Throws:

java.security.NoSuchAlgorithmException - If a required encryption algorithm is not available

getAlgorithmName

public static java.lang.String getAlgorithmName(int alg)

Return the encryption algorithm as a string

Parameters:

alg - int

Returns:

String