Package de.hsh.graja.offline.encryption

Class OgreConnector

java.lang.Object

de.hsh.graja.offline.encryption.OgreConnector

public class OgreConnector
extends Object

This class serves as a connection between the Offline-Graja-Encryption and other projects in need of using it.

Constructor Summary

Constructors

Constructor	Description
OgreConnector()

Method Summary

Modifier and Type	Method	Description
static File	decryptFile(File fileToDecrypt)	Encrypts the given file using the Offline-Graja-Encryption
static File	encryptFile(File fileToEncrypt, Map<String,? extends Object> metaData)	Encrypts the given file using the Offline-Graja-Encryption

Methods inherited from class java.lang.Object

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

Constructor Detail

OgreConnector

public OgreConnector()

Method Detail

encryptFile

public static File encryptFile(File fileToEncrypt,
                               Map<String,? extends Object> metaData)
                        throws IOException

Encrypts the given file using the Offline-Graja-Encryption

Parameters:

fileToEncrypt - The file which should be encrypted. The file is converted to a *.dat file with the same file name as the given file. For example a file called task.zip will be encrypted to task.dat. If there already is a file with that name (e. g. when encrypting a *.dat file), the encrypted file is named task_encrypted.dat (in that example - similar for other files). If the file task_encrypted.dat exists already as well, it will be overwritten!

metaData - A map containing all the meta data which should be stored in the encrypted file. After decryption this meta data will be stored in a JSON file called ogre.inf

Returns:

The encrypted *.dat file

Throws:

IOException

decryptFile

public static File decryptFile(File fileToDecrypt)
                        throws IOException

Encrypts the given file using the Offline-Graja-Encryption

Parameters:

fileToDecrypt - The file which should be decrypted. The file is converted to a *.zip file with the same file name as the given file. For example a file called task.dat will be decrypted to task.zip. If there already is a file with that name, the decrypted file is named task_decrypted.zip (in that example - similar for other files). If the file task_decrypted.zip exists already, it will be overwritten! This method will obviously fail and create data garbage if the given file was never encrypted with the ogre.inf

Returns:

The created *.zip file containing the original of the encrypted file and a JSON file called ogre.inf, containing all the meta data which was stored in the encrypted file.

Throws:

IOException