org.alfresco.jlan.server.auth

Class PasswordEncryptor

java.lang.Object

org.alfresco.jlan.server.auth.PasswordEncryptor

public class PasswordEncryptor
extends Object

Password Encryptor Class

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

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
PasswordEncryptor() Default constructor

Method Summary

Methods

Modifier and Type	Method and Description
static boolean	checkEncryptionAlgorithms() Check if the required algorithms are available
byte[]	doLanManBaseEncryption(String pwd) LanMan first stage of the encryption
byte[]	doLanManEncryption(byte[] p21, byte[] c8) LanMan encryption of a password previously encrypted with the well known value
byte[]	doMD4Hashing(byte[] pwdBytes) MD4 password hashinh
byte[]	doNTLM1Encryption(byte[] p21, byte[] c8) NTLM1 encryption of the MD4 hashed password
byte[]	doNTLM2Encryption(byte[] md4Hash, String userName, String domain) NTLM2 encryption of the MD4 hashed password
byte[]	generateEncryptedPassword(String plainPwd, byte[] encryptKey, int alg, String userName, String domain) Encrypt the plain text password with the specified encryption key using the specified encryption algorithm.
static String	getAlgorithmName(int alg) Return the encryption algorithm as a string
byte[]	P16(String pwd, byte[] s8) P16 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 static final boolean checkEncryptionAlgorithms()

Check if the required algorithms are available

Returns:

boolean

generateEncryptedPassword

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

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

userName - String

domain - String

Returns:

byte[] Encrypted password

Throws:

NoSuchAlgorithmException - If a required encryption algorithm is not available

InvalidKeyException - Key is invalid

P16

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

P16 encryption

Parameters:

pwd - java.lang.String

s8 - byte[]

Returns:

byte[]

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

doNTLM1Encryption

public final byte[] doNTLM1Encryption(byte[] p21,
                       byte[] c8)
                               throws NoSuchAlgorithmException

NTLM1 encryption of the MD4 hashed password

Parameters:

p21 - byte[]

c8 - byte[]

Returns:

byte[]

Throws:

NoSuchAlgorithmException

doNTLM2Encryption

public final byte[] doNTLM2Encryption(byte[] md4Hash,
                       String userName,
                       String domain)
                               throws NoSuchAlgorithmException,
                                      InvalidKeyException

NTLM2 encryption of the MD4 hashed password

Parameters:

md4Hash - byte[]

userName - String

domain - String

Returns:

byte[]

Throws:

NoSuchAlgorithmException

InvalidKeyException

doLanManBaseEncryption

public final byte[] doLanManBaseEncryption(String pwd)
                                    throws NoSuchAlgorithmException

LanMan first stage of the encryption

Parameters:

pwd - String

Returns:

byte[]

Throws:

NoSuchAlgorithmException - If a required encryption algorithm is not available

doLanManEncryption

public final byte[] doLanManEncryption(byte[] p21,
                        byte[] c8)
                                throws NoSuchAlgorithmException

LanMan encryption of a password previously encrypted with the well known value

Parameters:

p21 - byte[]

c8 - byte[]

Returns:

byte[]

Throws:

NoSuchAlgorithmException

doMD4Hashing

public final byte[] doMD4Hashing(byte[] pwdBytes)
                          throws NoSuchAlgorithmException,
                                 InvalidKeyException

MD4 password hashinh

Parameters:

pwdBytes - byte[]

Returns:

byte[]

Throws:

NoSuchAlgorithmException

InvalidKeyException