Package com.pnfsoftware.jeb.util.io

Class StreamWrappers

java.lang.Object

com.pnfsoftware.jeb.util.io.StreamWrappers

public class StreamWrappers
extends Object

Convenient stream wrappers to encrypt or compress data. Currently supported: LZ4 compression, RC4 encryption.

Constructor Summary

Constructors

Constructor	Description
StreamWrappers()

Method Summary

Modifier and Type	Method	Description
static FilterOutputStream	getCompressedStream(OutputStream out)	LZ4 compression.
static FilterInputStream	getDecryptedStream(InputStream in, byte[] key)	RC4 encryption.
static FilterInputStream	getDecryptedStream(InputStream in, String algo, byte[] key)	User-selectable encryption.
static FilterOutputStream	getEncryptedStream(OutputStream out, byte[] key)	RC4 encryption.
static FilterOutputStream	getEncryptedStream(OutputStream out, String algo, byte[] key)	User-selectable encryption.
static FilterInputStream	getUncompressedStream(InputStream in)	LZ4 compression.

Methods inherited from class java.lang.Object

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

Constructor Details

StreamWrappers

public StreamWrappers()

Method Details

getCompressedStream

public static FilterOutputStream getCompressedStream(OutputStream out)

LZ4 compression.

Parameters:

out -

Returns:

an output stream performing on-write LZ4 compression

getUncompressedStream

public static FilterInputStream getUncompressedStream(InputStream in)

LZ4 compression.

Parameters:

in -

Returns:

an input stream performing on-read LZ4 decompression

getEncryptedStream

public static FilterOutputStream getEncryptedStream(OutputStream out,
 byte[] key)

RC4 encryption.

Parameters:

out -

key -

Returns:

an output stream performing on-write RC4 encryption

getDecryptedStream

public static FilterInputStream getDecryptedStream(InputStream in,
 byte[] key)

RC4 encryption.

Parameters:

in -

key -

Returns:

an input stream performing on-read RC4 decryption

getEncryptedStream

public static FilterOutputStream getEncryptedStream(OutputStream out,
 String algo,
 byte[] key)

User-selectable encryption.

Parameters:

out -

algo -

key -

Returns:

an output stream performing on-write encryption

getDecryptedStream

public static FilterInputStream getDecryptedStream(InputStream in,
 String algo,
 byte[] key)

User-selectable encryption.

Parameters:

in -

algo -

key -

Returns:

an input stream performing on-read decryption