org.cryptacular.bean

Class AbstractBlockCipherBean

java.lang.Object

org.cryptacular.bean.AbstractCipherBean

org.cryptacular.bean.AbstractBlockCipherBean

All Implemented Interfaces:

CipherBean

Direct Known Subclasses:

AEADBlockCipherBean, BufferedBlockCipherBean

public abstract class AbstractBlockCipherBean
extends AbstractCipherBean

Base class for all cipher beans that use block cipher.

Author:

Middleware Services

Constructor Summary

Constructors

Constructor and Description
AbstractBlockCipherBean() Creates a new instance.
AbstractBlockCipherBean(KeyStore keyStore, String keyAlias, String keyPassword, Nonce nonce) Creates a new instance by specifying all properties.

Method Summary

Methods

Modifier and Type	Method and Description
protected abstract BlockCipherAdapter	newCipher(CiphertextHeader header, boolean mode) Creates a new cipher adapter instance suitable for the block cipher used by this class.
protected byte[]	process(CiphertextHeader header, boolean mode, byte[] input) Processes the given data under the action of the cipher.
protected void	process(CiphertextHeader header, boolean mode, InputStream input, OutputStream output) Processes the given data under the action of the cipher.

Methods inherited from class org.cryptacular.bean.AbstractCipherBean

decrypt, decrypt, encrypt, encrypt, getKeyAlias, getKeyStore, getNonce, lookupKey, setKeyAlias, setKeyPassword, setKeyStore, setNonce

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractBlockCipherBean

public AbstractBlockCipherBean()

Creates a new instance.

AbstractBlockCipherBean

public AbstractBlockCipherBean(KeyStore keyStore,
                       String keyAlias,
                       String keyPassword,
                       Nonce nonce)

Creates a new instance by specifying all properties.

Parameters:

keyStore - Key store containing encryption key.

keyAlias - Name of encryption key entry in key store.

keyPassword - Password used to decrypt key entry in keystore.

nonce - Nonce/IV generator.

Method Detail

process

protected byte[] process(CiphertextHeader header,
             boolean mode,
             byte[] input)

Processes the given data under the action of the cipher.

Specified by:

process in class AbstractCipherBean

Parameters:

header - Ciphertext header.

mode - True for encryption; false for decryption.

input - Data to process by cipher.

Returns:

Ciphertext data under encryption, plaintext data under decryption.

process

protected void process(CiphertextHeader header,
           boolean mode,
           InputStream input,
           OutputStream output)

Processes the given data under the action of the cipher.

Specified by:

process in class AbstractCipherBean

Parameters:

header - Ciphertext header.

mode - True for encryption; false for decryption.

input - Stream containing input data.

output - Stream that receives output of cipher.

newCipher

protected abstract BlockCipherAdapter newCipher(CiphertextHeader header,
                           boolean mode)

Creates a new cipher adapter instance suitable for the block cipher used by this class.

Parameters:

header - Ciphertext header.

mode - True for encryption; false for decryption.

Returns:

Block cipher adapter that wraps an initialized block cipher that is ready for use in the given mode.