org.apache.fulcrum.jce.crypto

Class SmartDecryptingInputStream

java.lang.Object

java.io.InputStream

java.io.ByteArrayInputStream

org.apache.fulcrum.jce.crypto.SmartDecryptingInputStream

All Implemented Interfaces:

Closeable, AutoCloseable

public class SmartDecryptingInputStream
extends ByteArrayInputStream

An input stream that determine if the originating input stream was encrypted or not. This magic only works for well-known file types though.

Author:

Siegfried Goeschl

Field Summary

Fields inherited from class java.io.ByteArrayInputStream

buf, count, mark, pos

Constructor Summary

Constructors

Constructor and Description
SmartDecryptingInputStream(CryptoStreamFactory cryptoStreamFactory, InputStream is) Constructor
SmartDecryptingInputStream(CryptoStreamFactory cryptoStreamFactory, InputStream is, char[] password) Constructor

Method Summary

Modifier and Type	Method and Description
long	copy(InputStream is, OutputStream os) Pumps the input stream to the output stream.

Methods inherited from class java.io.ByteArrayInputStream

available, close, mark, markSupported, read, read, reset, skip

Methods inherited from class java.io.InputStream

read

Methods inherited from class java.lang.Object

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

Constructor Detail

SmartDecryptingInputStream

public SmartDecryptingInputStream(CryptoStreamFactory cryptoStreamFactory,
                                  InputStream is)
                           throws IOException,
                                  GeneralSecurityException

Constructor

Parameters:

cryptoStreamFactory - the CryptoStreamFactory for creating a cipher stream

is - the input stream to be decrypted

Throws:

IOException - if file not found

GeneralSecurityException - if security check fails

SmartDecryptingInputStream

public SmartDecryptingInputStream(CryptoStreamFactory cryptoStreamFactory,
                                  InputStream is,
                                  char[] password)
                           throws IOException,
                                  GeneralSecurityException

Constructor

Parameters:

cryptoStreamFactory - the CryptoStreamFactory for creating a cipher stream

is - the input stream to be decrypted

password - the password for decryption

Throws:

IOException - if file not found

GeneralSecurityException - if security check fails

Method Detail

copy

public long copy(InputStream is,
                 OutputStream os)
          throws IOException

Pumps the input stream to the output stream.

Parameters:

is - the source input stream

os - the target output stream

Returns:

the number of bytes copied

Throws:

IOException - the copying failed