weblogic.wtc.jatmi

Class TPCrypt

java.lang.Object

weblogic.wtc.jatmi.TPCrypt

public final class TPCrypt
extends java.lang.Object

Excluded in public API Reference.

This class represents a DES encryption/decryption without padding with CBC.

Field Summary

Fields

Modifier and Type	Field and Description
protected byte[]	cbc_vector
static int	CHLG_LEN
static int	DECRYPT
static int	DES_ITERATIONS
protected static byte[]	dflt_cbc_vector
protected static byte[]	E
static int	ENCRYPT
protected static byte[]	FP
protected static byte[]	IP
protected static byte[]	P
protected static byte[]	PC1_C
protected static byte[]	PC1_D
protected static byte[]	PC2_C
protected static byte[]	PC2_D
protected static byte[][]	S
protected byte[][]	sched
protected byte[]	sec_key
protected static byte[]	shifts
static int	TMSEC_KEYLEN
static int	TMSEC_TICKETLEN

Constructor Summary

Constructors

Constructor and Description
TPCrypt()

Method Summary

Modifier and Type	Method and Description
int	crypt(byte[] in, byte[] out, int len, int crypt)
protected int	DESCrypt(byte[] in, byte[] out, int len, int crypt, byte[] init_cbc)
private void	DESDecrypt(byte[] block, byte[][] KS)
private void	DESEncrypt(byte[] block, byte[][] KS)
private void	fixDESParity()
private void	initCrypt()
int	pwToKey(java.lang.String passwd, byte[] key)
byte[]	randKey()
private void	setDESKey(byte[] key, byte[][] KS)
int	setInitializationVector(byte[] iv)
int	setKey(byte[] key)

Methods inherited from class java.lang.Object

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

Field Detail

sec_key

protected byte[] sec_key

sched

protected byte[][] sched

dflt_cbc_vector

protected static byte[] dflt_cbc_vector

cbc_vector

protected byte[] cbc_vector

CHLG_LEN

public static final int CHLG_LEN

See Also:

Constant Field Values

TMSEC_KEYLEN

public static final int TMSEC_KEYLEN

See Also:

Constant Field Values

TMSEC_TICKETLEN

public static final int TMSEC_TICKETLEN

See Also:

Constant Field Values

DES_ITERATIONS

public static final int DES_ITERATIONS

See Also:

Constant Field Values

DECRYPT

public static final int DECRYPT

See Also:

Constant Field Values

ENCRYPT

public static final int ENCRYPT

See Also:

Constant Field Values

IP

protected static byte[] IP

FP

protected static byte[] FP

PC1_C

protected static byte[] PC1_C

PC1_D

protected static byte[] PC1_D

shifts

protected static byte[] shifts

PC2_C

protected static byte[] PC2_C

PC2_D

protected static byte[] PC2_D

E

protected static byte[] E

S

protected static byte[][] S

P

protected static byte[] P

Constructor Detail

TPCrypt

public TPCrypt()

Excluded in public API Reference.

Create a new DES base Crypto object with no padding using CBC. This object can be used to create secret key that are suitable to be used later on to encrypt/decrypt a message.

Method Detail

crypt

public int crypt(byte[] in,
                 byte[] out,
                 int len,
                 int crypt)

Parameters:

in - the input data in a byte array

out - the output data in a a byte array

len - the length of the input data to be encrypted/decrypted in byte

crypt - the flag to instruct the crypto object to encrypt or decrypt, the value should be either TPCrypt.ENCRYPT or TPCrypt.DECRYPT

Returns:

• 0 - Success
• -1 - Failure

Throws:

java.lang.Exception

Excluded in public API Reference.

This method does encryption or decryption depends on the input type.

setKey

public int setKey(byte[] key)

Parameters:

key - byte array of length TPCrypt.TMSEC_KEYLEN that is suitable to be used by the crypto object.

Returns:

• 0 - Success
• -1 - Failure

Excluded in public API Reference.

Change to crypto object to use a different key from now on to encrypt or decrypt the secret.

setInitializationVector

public int setInitializationVector(byte[] iv)

Parameters:

iv - byte array of length TPCrypt.TMSEC_KEYLEN that is suitable to be used by the crypto object.

Returns:

• 0 - Success
• -1 - Failure

Excluded in public API Reference.

Change crypto object to use a different Initial CBC vector from now on to encrypt or decrypt the secret.

pwToKey

public int pwToKey(java.lang.String passwd,
                   byte[] key)

Parameters:

passwd - the password string that the secret key should be derived from The maximum string length is tfmh.MAXDOMAIN_LEN + 2.

key - the byte array that contains output of the secret key, the byte array must have the length of TPCrypt.TMSEC_KEYLEN

Returns:

• 0 - Success
• -1 - Failure

Throws:

java.lang.Exception

Excluded in public API Reference.

Transform a password to a secret key suitable to be used by DES crypto object.

randKey

public byte[] randKey()

Returns:

byte array of the secret key which is of length TPCrypt.TMSEC_KEYLEN

Excluded in public API Reference.

Generate a random secret key that is suitable to be used by DES crypto object

fixDESParity

private void fixDESParity()

setDESKey

private void setDESKey(byte[] key,
                       byte[][] KS)

DESEncrypt

private void DESEncrypt(byte[] block,
                        byte[][] KS)

DESDecrypt

private void DESDecrypt(byte[] block,
                        byte[][] KS)

initCrypt

private void initCrypt()

DESCrypt

protected int DESCrypt(byte[] in,
                       byte[] out,
                       int len,
                       int crypt,
                       byte[] init_cbc)