de.alpharogroup.crypto.factories

Class CipherFactory

java.lang.Object

de.alpharogroup.crypto.factories.CipherFactory

public class CipherFactory
extends Object

The factory class CipherFactory holds methods for creating Cipher objects.

Constructor Summary

Constructors

Constructor and Description
CipherFactory()

Method Summary

Modifier and Type	Method and Description
static Cipher	newCipher(int operationMode, SecretKey key, AlgorithmParameterSpec paramSpec, String algorithm) Factory method for creating a new Cipher from the given parameters.
static Cipher	newCipher(String algorithm) Factory method for creating a new Cipher from the given algorithm.
static Cipher	newCipher(String algorithm, String provider) Factory method for creating a new Cipher from the given algorithm and provider.
static Cipher	newCipher(String privateKey, String algorithm, byte[] salt, int iterationCount, int operationMode) Factory method for creating a new Cipher from the given parameters.

Methods inherited from class java.lang.Object

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

Constructor Detail

CipherFactory

public CipherFactory()

Method Detail

newCipher

public static Cipher newCipher(int operationMode,
                               SecretKey key,
                               AlgorithmParameterSpec paramSpec,
                               String algorithm)
                        throws NoSuchAlgorithmException,
                               NoSuchPaddingException,
                               InvalidKeyException,
                               InvalidAlgorithmParameterException

Factory method for creating a new Cipher from the given parameters.

Parameters:

operationMode - the operation mode

key - the key

paramSpec - the param spec

algorithm - the algorithm

Returns:

the new Cipher

Throws:

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

NoSuchPaddingException - is thrown if instantiation of the cypher object fails.

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

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

newCipher

public static Cipher newCipher(String algorithm)
                        throws NoSuchAlgorithmException,
                               NoSuchPaddingException

Factory method for creating a new Cipher from the given algorithm.

Parameters:

algorithm - the alg

Returns:

the new Cipher

Throws:

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

NoSuchPaddingException - is thrown if instantiation of the cypher object fails.

newCipher

public static Cipher newCipher(String algorithm,
                               String provider)
                        throws NoSuchAlgorithmException,
                               NoSuchProviderException,
                               NoSuchPaddingException

Factory method for creating a new Cipher from the given algorithm and provider.

Parameters:

algorithm - the algorithm

provider - the provider

Returns:

the new Cipher

Throws:

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

NoSuchProviderException - is thrown if the specified provider is not registered in the security provider list.

NoSuchPaddingException - is thrown if algorithm contains a padding scheme that is not available.

newCipher

public static Cipher newCipher(String privateKey,
                               String algorithm,
                               byte[] salt,
                               int iterationCount,
                               int operationMode)
                        throws NoSuchAlgorithmException,
                               InvalidKeySpecException,
                               NoSuchPaddingException,
                               InvalidKeyException,
                               InvalidAlgorithmParameterException,
                               UnsupportedEncodingException

Factory method for creating a new Cipher from the given parameters. This method is invoked in the constructor from the derived classes and can be overridden so users can provide their own version of a new Cipher from the given parameters.

Parameters:

privateKey - the private key

algorithm - the algorithm

salt - the salt.

iterationCount - the iteration count

operationMode - the operation mode for the new cipher object

Returns:

the cipher

Throws:

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

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

NoSuchPaddingException - is thrown if instantiation of the cypher object fails.

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

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

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