biz.source_code.crypto

Class Idea

java.lang.Object

biz.source_code.crypto.Idea

public class Idea
extends Object

IDEA encryption module (International Data Encryption Algorithm).

See Wikipedia.

Constructor Summary

Constructors

Constructor and Description
Idea(byte[] key, boolean encrypt) Creates an instance of the IDEA processor, initialized with a 16-byte binary key.
Idea(String charKey, boolean encrypt) Creates an instance of the IDEA processor, initialized with a character string key.

Method Summary

Modifier and Type	Method and Description
void	crypt(byte[] data) Encrypts or decrypts a block of 8 data bytes.
void	crypt(byte[] data, int dataPos) Encrypts or decrypts a block of 8 data bytes.

Methods inherited from class java.lang.Object

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

Constructor Detail

Idea

public Idea(byte[] key,
            boolean encrypt)

Creates an instance of the IDEA processor, initialized with a 16-byte binary key.

Parameters:

key - A 16-byte binary key.

encrypt - true to encrypt, false to decrypt.

Idea

public Idea(String charKey,
            boolean encrypt)

Creates an instance of the IDEA processor, initialized with a character string key.

Parameters:

charKey - A string of ASCII characters within the range 0x21 .. 0x7E.

encrypt - true to encrypt, false to decrypt.

Method Detail

crypt

public void crypt(byte[] data)

Encrypts or decrypts a block of 8 data bytes.

Parameters:

data - Buffer containing the 8 data bytes to be encrypted/decrypted.

crypt

public void crypt(byte[] data,
                  int dataPos)

Encrypts or decrypts a block of 8 data bytes.

Parameters:

data - Data buffer containing the bytes to be encrypted/decrypted.

dataPos - Start position of the 8 bytes within the buffer.