de.alpharogroup.crypto.file

Class FileEncryptor

java.lang.Object

de.alpharogroup.crypto.core.AbstractCryptor<C,K>

de.alpharogroup.crypto.core.AbstractEncryptor<Cipher,String>

de.alpharogroup.crypto.core.AbstractFileEncryptor

de.alpharogroup.crypto.file.FileEncryptor

All Implemented Interfaces:

de.alpharogroup.crypto.api.Cryptor, de.alpharogroup.crypto.api.Encryptor<File,File>, de.alpharogroup.crypto.api.FileEncryptor, Serializable

public class FileEncryptor
extends AbstractFileEncryptor

The class FileEncryptor can encrypt files with the given crypt model.

See Also:

Serialized Form

Field Summary

Fields inherited from class de.alpharogroup.crypto.core.AbstractCryptor

model

Constructor Summary

Constructors

Constructor and Description
FileEncryptor(de.alpharogroup.crypto.model.CryptModel<Cipher,String> model) Instantiates a new file encryptor.
FileEncryptor(de.alpharogroup.crypto.model.CryptModel<Cipher,String> model, File encryptedFile) Instantiates a new file encryptor.

Method Summary

Modifier and Type	Method and Description
File	encrypt(File toEncrypt)
protected File	newEncryptedFile(String parent, String child) Factory method for creating the new decrypted File if it is not exists.

Methods inherited from class de.alpharogroup.crypto.core.AbstractFileEncryptor

newCipher, newCipher, newKeySpec

Methods inherited from class de.alpharogroup.crypto.core.AbstractEncryptor

newOperationMode

Methods inherited from class de.alpharogroup.crypto.core.AbstractCryptor

newAlgorithm, newAlgorithmParameterSpec, newCipher, newIterationCount, newSalt, newSecretKeyFactory, onInitialize

Methods inherited from class java.lang.Object

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

Constructor Detail

FileEncryptor

public FileEncryptor(de.alpharogroup.crypto.model.CryptModel<Cipher,String> model)
              throws InvalidKeyException,
                     NoSuchAlgorithmException,
                     InvalidKeySpecException,
                     NoSuchPaddingException,
                     InvalidAlgorithmParameterException,
                     UnsupportedEncodingException

Instantiates a new file encryptor.

Parameters:

model - the model

Throws:

InvalidKeyException - the invalid key exception

NoSuchAlgorithmException - is thrown if instantiation of the SecretKeyFactory object fails.

InvalidKeySpecException - is thrown if generation of the SecretKey object fails.

NoSuchPaddingException - the no such padding exception

InvalidAlgorithmParameterException - is thrown if initialization of the cypher object fails.

UnsupportedEncodingException - is thrown if the named charset is not supported.

FileEncryptor

public FileEncryptor(de.alpharogroup.crypto.model.CryptModel<Cipher,String> model,
                     File encryptedFile)
              throws InvalidKeyException,
                     NoSuchAlgorithmException,
                     InvalidKeySpecException,
                     NoSuchPaddingException,
                     InvalidAlgorithmParameterException,
                     UnsupportedEncodingException

Instantiates a new file encryptor.

Parameters:

model - the model

encryptedFile - is the target of the result from the encryption, if null the default file will be created. If null the name convention is given name of the file that has to be encrypted with the extension '.enc'.

Throws:

InvalidKeyException - the invalid key exception

NoSuchAlgorithmException - is thrown if instantiation of the SecretKeyFactory object fails.

InvalidKeySpecException - is thrown if generation of the SecretKey object fails.

NoSuchPaddingException - the no such padding exception

InvalidAlgorithmParameterException - is thrown if initialization of the cypher object fails.

UnsupportedEncodingException - is thrown if the named charset is not supported.

Method Detail

encrypt

public File encrypt(File toEncrypt)
             throws Exception

Throws:

Exception

newEncryptedFile

protected File newEncryptedFile(String parent,
                                String child)

Factory method for creating the new decrypted File if it is not exists. This method is invoked in the constructor from the derived classes and can be overridden so users can provide their own version of creating the new decrypted File

Parameters:

parent - the parent directory

child - the file name

Returns:

the new File object