de.schlichtherle.truezip.sample.file
Class RaesFiles

java.lang.Object
  de.schlichtherle.truezip.sample.file.RaesFiles

public class RaesFiles
extends Object

Saves and restores the contents of arbitrary files to and from the RAES file format for encryption and decryption. This class cannot get instantiated outside its package.

Note that this class is not intended to access RAES encrypted ZIP files - use the TFile class for this task instead.

Author:

Christian Schlichtherle

RaesFiles

public RaesFiles()

encrypt

public static void encrypt(String plainFilePath,
                           String raesFilePath)
                    throws IOException

Encrypts the given plain file to the given RAES file. This version uses the default TArchiveDetector to detect any archive files in its parent directory path except the files themselves, which are not recognized as archive files.

Throws:

IOException

encrypt

public static void encrypt(String plainFilePath,
                           String raesFilePath,
                           TArchiveDetector detector)
                    throws IOException

Encrypts the given plain file to the given RAES file, using the provided TArchiveDetector to detect any archive files in its parent directory path except the files themselves, which are not recognized as archive files.

Throws:

IOException

decrypt

public static void decrypt(String raesFilePath,
                           String plainFilePath,
                           boolean strongAuthentication)
                    throws IOException

Decrypts the given RAES file to the given plain file. This version uses the default TArchiveDetector to detect any archive files in its parent directory path except the files themselves, which are not recognized as archive files.

Throws:

IOException

decrypt

public static void decrypt(String raesFilePath,
                           String plainFilePath,
                           boolean strongAuthentication,
                           TArchiveDetector detector)
                    throws IOException

Decrypts the given RAES file to the given plain file, using the provided TArchiveDetector to detect any archvie files in its parent directory path except the files themselves, which are not recognized as archive files.

Parameters:

strongAuthentication - If this is true, the whole contents of encrypted file get authenticated, which can be a time consuming operation. Otherwise, only the key/password and the file length get authenticated.

Throws:

IOException

newNonArchiveFile

private static TFile newNonArchiveFile(String path,
                                       TArchiveDetector detector)

Creates a file object which uses the provided TArchiveDetector, but does not recognize its own pathname as an archive file. Please note that this method just creates a file object, and does not actually operate on the file system.