org.eclipse.emf.ecore.resource.impl
Class DESCipherImpl

java.lang.Object
  org.eclipse.emf.ecore.resource.impl.DESCipherImpl

All Implemented Interfaces:

URIConverter.Cipher

Direct Known Subclasses:

CryptoCipherImpl

public class DESCipherImpl
extends java.lang.Object
implements URIConverter.Cipher

EMF implementation for the URIConverter.Cipher interface using the DES encryption algorithm.

This shows how this class can be used:

 Map options = new HashMap();
 options.put(Resource.OPTION_CIPHER, 
             new DESCipherImpl("a very long key indeed"));
 resource.save(options);
 resource.load(options);
 

Since:

2.3.0

Field Summary

protected static java.lang.String	ENCRYPTION_SCHEME
protected javax.crypto.SecretKey	key
protected java.lang.String	stringKey
protected static java.lang.String	UNICODE_FORMAT

Constructor Summary

DESCipherImpl()

DESCipherImpl(java.lang.String key)

Method Summary

java.io.InputStream	decrypt(java.io.InputStream inputStream) Decrypts the specified input stream.
java.io.OutputStream	encrypt(java.io.OutputStream outputStream) Encrypts the specified output stream.
void	finish(java.io.InputStream inputStream) This method is invoked after the decrypted input stream is used allowing the Cipher implementation to do any maintenance work required, such as flushing internal cache.
void	finish(java.io.OutputStream outputStream) This method is invoked after the encrypted output stream is used allowing the Cipher implementation to do any maintenance work required, such as flushing an internal cache.
protected javax.crypto.SecretKey	getKey()

Methods inherited from class java.lang.Object

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

Field Detail

ENCRYPTION_SCHEME

protected static final java.lang.String ENCRYPTION_SCHEME

See Also:

Constant Field Values

UNICODE_FORMAT

protected static final java.lang.String UNICODE_FORMAT

See Also:

Constant Field Values

stringKey

protected java.lang.String stringKey

key

protected javax.crypto.SecretKey key

Constructor Detail

DESCipherImpl

public DESCipherImpl()

DESCipherImpl

public DESCipherImpl(java.lang.String key)

Method Detail

encrypt

public java.io.OutputStream encrypt(java.io.OutputStream outputStream)
                             throws java.lang.Exception

Description copied from interface: URIConverter.Cipher

Encrypts the specified output stream.

Specified by:

encrypt in interface URIConverter.Cipher

Returns:

an encrypted output stream

Throws:

java.lang.Exception

finish

public void finish(java.io.OutputStream outputStream)
            throws java.lang.Exception

Description copied from interface: URIConverter.Cipher

This method is invoked after the encrypted output stream is used allowing the Cipher implementation to do any maintenance work required, such as flushing an internal cache.

Specified by:

finish in interface URIConverter.Cipher

Parameters:

outputStream - the encrypted stream returned by URIConverter.Cipher.encrypt(OutputStream).

Throws:

java.lang.Exception

decrypt

public java.io.InputStream decrypt(java.io.InputStream inputStream)
                            throws java.lang.Exception

Description copied from interface: URIConverter.Cipher

Decrypts the specified input stream.

Specified by:

decrypt in interface URIConverter.Cipher

Returns:

a decrypted input stream

Throws:

java.lang.Exception

finish

public void finish(java.io.InputStream inputStream)
            throws java.lang.Exception

Description copied from interface: URIConverter.Cipher

This method is invoked after the decrypted input stream is used allowing the Cipher implementation to do any maintenance work required, such as flushing internal cache.

Specified by:

finish in interface URIConverter.Cipher

Parameters:

inputStream - the stream returned by URIConverter.Cipher.decrypt(InputStream).

Throws:

java.lang.Exception

getKey

protected javax.crypto.SecretKey getKey()
                                 throws java.lang.Exception

Throws:

java.lang.Exception