de.alpharogroup.crypto.key

Class PublicKeyEncryptor

java.lang.Object

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

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

de.alpharogroup.crypto.key.PublicKeyEncryptor

All Implemented Interfaces:

de.alpharogroup.crypto.api.ByteArrayEncryptor, de.alpharogroup.crypto.api.Cryptor, de.alpharogroup.crypto.api.Encryptor<byte[],byte[]>, Serializable

public class PublicKeyEncryptor
extends AbstractEncryptor<Cipher,PublicKey>
implements de.alpharogroup.crypto.api.ByteArrayEncryptor

The class PublicKeyEncryptor can encrypt a byte array with his public key.

See Also:

Serialized Form

Field Summary

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

model

Constructor Summary

Constructors

Constructor and Description
PublicKeyEncryptor(de.alpharogroup.crypto.model.CryptModel<Cipher,PublicKey> model) Instantiates a new PublicKeyEncryptor with the given CryptModel.

Method Summary

Modifier and Type	Method and Description
byte[]	encrypt(byte[] toEncrypt)
protected String	newAlgorithm() Factory method for creating a new algorithm that will be used with the cipher object.
protected Cipher	newCipher(PublicKey key, String algorithm, byte[] salt, int iterationCount, int operationMode) Factory method for creating a new Cipher from the given parameters.

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

newOperationMode

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

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

PublicKeyEncryptor

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

Instantiates a new PublicKeyEncryptor with the given CryptModel.

Parameters:

model - The crypt model.

Throws:

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

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

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

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

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

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

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

Method Detail

encrypt

public byte[] encrypt(byte[] toEncrypt)
               throws Exception

Specified by:

encrypt in interface de.alpharogroup.crypto.api.Encryptor<byte[],byte[]>

Throws:

Exception

newAlgorithm

protected String newAlgorithm()

Factory method for creating a new algorithm that will be used with the cipher object. Overwrite this method to provide a specific algorithm.

Overrides:

newAlgorithm in class AbstractCryptor<Cipher,PublicKey>

Returns:

the new algorithm that will be used with the cipher object.

newCipher

protected Cipher newCipher(PublicKey key,
                           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.

Specified by:

newCipher in class AbstractCryptor<Cipher,PublicKey>

Parameters:

key - the 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.