org.ifeth.sehr.lib
Class DesEncrypter

java.lang.Object
  org.ifeth.sehr.lib.DesEncrypter

public class DesEncrypter

extends java.lang.Object

Author:

HansJHaase (refactoring some methods)

Constructor Summary

DesEncrypter()
Parameterless Constructor

DesEncrypter(char[] key)
Constructor with preparation of en-/decryption

Method Summary

javax.crypto.CipherInputStream	getCipherInputStream(java.io.FileInputStream fis) Input stream with cipher
javax.crypto.CipherOutputStream	getCipherOutputStream(java.io.FileOutputStream fos) Output stream with cipher
javax.crypto.Cipher	getDecryptionCipher() Get cipher for decryption
javax.crypto.Cipher	getEncryptionCipher() Get cipher object for encryption
java.lang.String	getErrorMessage() Returns the last errorMessage.
boolean	init(char[] key)
boolean	isValid() If 'true' the cipher object is usable

Methods inherited from class java.lang.Object

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

Constructor Detail

DesEncrypter

public DesEncrypter()

Parameterless Constructor

DesEncrypter

public DesEncrypter(char[] key)
             throws java.lang.Exception

Constructor with preparation of en-/decryption

Throws:

java.lang.Exception

Method Detail

init

public boolean init(char[] key)

isValid

public boolean isValid()

If 'true' the cipher object is usable

Returns:

true if process was successful

getEncryptionCipher

public javax.crypto.Cipher getEncryptionCipher()

Get cipher object for encryption

Returns:

Cipher_Object 'null' if not successful, details stored in 'errorMessage'

getDecryptionCipher

public javax.crypto.Cipher getDecryptionCipher()

Get cipher for decryption

Returns:

cipher for decryption or null

getCipherInputStream

public javax.crypto.CipherInputStream getCipherInputStream(java.io.FileInputStream fis)

Input stream with cipher

Parameters:

fis - - FileInputStream

Returns:

CipherInputStream_Object - CipherInputStream (decrypted) oder null

getCipherOutputStream

public javax.crypto.CipherOutputStream getCipherOutputStream(java.io.FileOutputStream fos)

Output stream with cipher

Parameters:

fos - - FileOutputStream

Returns:

CipherOutputStream_Object - CipherOutputStream (encrypted) oder null

getErrorMessage

public java.lang.String getErrorMessage()

Returns the last errorMessage.

Returns:

string