Package org.cryptomator.cryptolib.common

Class DecryptingReadableByteChannel

java.lang.Object

org.cryptomator.cryptolib.common.DecryptingReadableByteChannel

All Implemented Interfaces:

Closeable, AutoCloseable, Channel, ReadableByteChannel

public class DecryptingReadableByteChannel
extends Object
implements ReadableByteChannel

Constructor Summary

Constructors

Constructor	Description
DecryptingReadableByteChannel(ReadableByteChannel src, Cryptor cryptor, boolean authenticate)	Creates a DecryptingReadableByteChannel that decrypts a whole ciphertext file beginning at its first byte.
DecryptingReadableByteChannel(ReadableByteChannel src, Cryptor cryptor, boolean authenticate, FileHeader header, long firstChunk)	Creates a DecryptingReadableByteChannel with a previously read header, allowing to start decryption at any chunk.

Method Summary

Modifier and Type	Method	Description
void	close()
boolean	isOpen()
int	read(ByteBuffer dst)

Methods inherited from class java.lang.Object

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

Constructor Detail

DecryptingReadableByteChannel

public DecryptingReadableByteChannel(ReadableByteChannel src,
                                     Cryptor cryptor,
                                     boolean authenticate)

Creates a DecryptingReadableByteChannel that decrypts a whole ciphertext file beginning at its first byte.

Parameters:

src - A ciphertext channel positioned at the begin of the file header

cryptor - The cryptor to use

authenticate - Set to false to skip ciphertext authentication (may not be supported)

DecryptingReadableByteChannel

public DecryptingReadableByteChannel(ReadableByteChannel src,
                                     Cryptor cryptor,
                                     boolean authenticate,
                                     FileHeader header,
                                     long firstChunk)

Creates a DecryptingReadableByteChannel with a previously read header, allowing to start decryption at any chunk.

Parameters:

src - A ciphertext channel positioned at the beginning of the given firstChunk

cryptor - The cryptor to use

authenticate - Set to false to skip ciphertext authentication (may not be supported)

header - The file's header

firstChunk - The index of the chunk at which the src channel is positioned

Method Detail

isOpen

public boolean isOpen()

Specified by:

isOpen in interface Channel

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Channel

Specified by:

close in interface Closeable

Throws:

IOException

read

public int read(ByteBuffer dst)
         throws IOException

Specified by:

read in interface ReadableByteChannel

Throws:

IOException