superwaba.ext.xplat.util.crypto
Class BlowfishECB

java.lang.Object
  |
  +--superwaba.ext.xplat.util.crypto.BlowfishECB

Direct Known Subclasses:

BlowfishCBC

public class BlowfishECB

extends java.lang.Object

Implementation of the Blowfish encryption algorithm in ECB mode

Field Summary

static int	BLOCKSIZE block size of this cipher (in bytes)
static int	MAXKEYLENGTH maximum possible key length

Constructor Summary

BlowfishECB(byte[] bfkey)
default constructor

BlowfishECB(java.lang.String key)

Method Summary

void	cleanUp() to clear data in the boxes before an instance is freed
void	decrypt(byte[] buffer) decrypts a byte buffer (should be aligned to an 8 byte border) to itself
void	decrypt(byte[] inbuffer, byte[] outbuffer) decrypts a byte buffer (should be aligned to an 8 byte border) to another byte buffer (of the same size or bigger)
void	decrypt(int[] buffer) decrypts an int buffer (should be aligned to an two integer border)
void	decrypt(int[] inbuffer, int[] outbuffer) decrypts an integer buffer (should be aligned to an two integer border) to another int buffer (of the same size or bigger)
void	decrypt(long[] buffer) decrypts a long buffer to itself
void	decrypt(long[] inbuffer, long[] outbuffer) decrypts a long buffer to another long buffer (of the same size or bigger)
java.lang.String	decrypt(java.lang.String value) Decrypts the given String via the Blowfish algorithm that was encrypted with the encrypt(String) method.
protected long	decryptBlock(long lCipherBlock)
void	encrypt(byte[] buffer) encrypts a byte buffer (should be aligned to an 8 byte border) to itself
void	encrypt(byte[] inbuffer, byte[] outbuffer) encrypts a byte buffer (should be aligned to an 8 byte border) to another buffer (of the same size or bigger)
void	encrypt(int[] buffer) encrypts an int buffer (should be aligned to a two integer border)
void	encrypt(int[] inbuffer, int[] outbuffer) encrypts an integer buffer (should be aligned to an two integer border) to another int buffer (of the same size or bigger)
void	encrypt(long[] buffer) encrypts a long buffer to itself
void	encrypt(long[] inbuffer, long[] outbuffer) encrypts a long buffer to another long buffer (of the same size or bigger)
java.lang.String	encrypt(java.lang.String value) Encrypts the given String with the Blowfish algorithm.
protected long	encryptBlock(long lPlainBlock) selftest routine, to check e.g. for a valid class file transmission
static int	hex2unsigned(char[] chars, int offset)

Methods inherited from class java.lang.Object

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

Field Detail

MAXKEYLENGTH

public static final int MAXKEYLENGTH

maximum possible key length

BLOCKSIZE

public static final int BLOCKSIZE

block size of this cipher (in bytes)

Constructor Detail

BlowfishECB

public BlowfishECB(java.lang.String key)

BlowfishECB

public BlowfishECB(byte[] bfkey)

default constructor

Parameters:

bfkey - key material, up to MAXKEYLENGTH bytes

Method Detail

cleanUp

public void cleanUp()

to clear data in the boxes before an instance is freed

encryptBlock

protected long encryptBlock(long lPlainBlock)

selftest routine, to check e.g. for a valid class file transmission

Returns:

true: selftest passed / false: selftest failed

decryptBlock

protected long decryptBlock(long lCipherBlock)

encrypt

public void encrypt(byte[] inbuffer,
                    byte[] outbuffer)

encrypts a byte buffer (should be aligned to an 8 byte border) to another buffer (of the same size or bigger)

Parameters:

inbuffer - buffer with plaintext data

outbuffer - buffer to get the ciphertext data

encrypt

public void encrypt(byte[] buffer)

encrypts a byte buffer (should be aligned to an 8 byte border) to itself

Parameters:

buffer - buffer to encrypt

encrypt

public void encrypt(int[] inbuffer,
                    int[] outbuffer)

encrypts an integer buffer (should be aligned to an two integer border) to another int buffer (of the same size or bigger)

Parameters:

inbuffer - buffer with plaintext data

outbuffer - buffer to get the ciphertext data

encrypt

public void encrypt(int[] buffer)

encrypts an int buffer (should be aligned to a two integer border)

Parameters:

buffer - buffer to encrypt

encrypt

public void encrypt(long[] inbuffer,
                    long[] outbuffer)

encrypts a long buffer to another long buffer (of the same size or bigger)

Parameters:

inbuffer - buffer with plaintext data

outbuffer - buffer to get the ciphertext data

encrypt

public void encrypt(long[] buffer)

encrypts a long buffer to itself

Parameters:

buffer - buffer to encrypt

decrypt

public void decrypt(byte[] inbuffer,
                    byte[] outbuffer)

decrypts a byte buffer (should be aligned to an 8 byte border) to another byte buffer (of the same size or bigger)

Parameters:

inbuffer - buffer with ciphertext data

outbuffer - buffer to get the plaintext data

decrypt

public void decrypt(byte[] buffer)

decrypts a byte buffer (should be aligned to an 8 byte border) to itself

Parameters:

buffer - buffer to decrypt

decrypt

public void decrypt(int[] inbuffer,
                    int[] outbuffer)

decrypts an integer buffer (should be aligned to an two integer border) to another int buffer (of the same size or bigger)

Parameters:

inbuffer - buffer with ciphertext data

outbuffer - buffer to get the plaintext data

decrypt

public void decrypt(int[] buffer)

decrypts an int buffer (should be aligned to an two integer border)

Parameters:

buffer - buffer to decrypt

decrypt

public void decrypt(long[] inbuffer,
                    long[] outbuffer)

decrypts a long buffer to another long buffer (of the same size or bigger)

Parameters:

inbuffer - buffer with ciphertext data

outbuffer - buffer to get the plaintext data

decrypt

public void decrypt(long[] buffer)

decrypts a long buffer to itself

Parameters:

buffer - buffer to decrypt

encrypt

public java.lang.String encrypt(java.lang.String value)

Encrypts the given String with the Blowfish algorithm. The returned string contains 32-bit numbers in hex mode. It should be decrypted using the decrypt(String) method.

Parameters:

value - The String to encrypt

Returns:

An encrypted version of value

decrypt

public java.lang.String decrypt(java.lang.String value)

Decrypts the given String via the Blowfish algorithm that was encrypted with the encrypt(String) method.

Parameters:

value - The String to decrypt, stored as sequences of 32 bit hexadecimal integers.

Returns:

A decrypted version of value

hex2unsigned

public static int hex2unsigned(char[] chars,
                               int offset)