org.cryptacular.bean

Class BufferedBlockCipherBean

java.lang.Object

org.cryptacular.bean.AbstractCipherBean

org.cryptacular.bean.AbstractBlockCipherBean

org.cryptacular.bean.BufferedBlockCipherBean

All Implemented Interfaces:

CipherBean

public class BufferedBlockCipherBean
extends AbstractBlockCipherBean

Cipher bean that performs symmetric encryption/decryption using a standard block cipher in a standard mode (e.g. CBC, OFB) with padding to support processing inputs of arbitrary length.

Author:

Middleware Services

Constructor Summary

Constructors

Constructor and Description
BufferedBlockCipherBean() Creates a new instance.
BufferedBlockCipherBean(Spec<org.bouncycastle.crypto.BufferedBlockCipher> blockCipherSpec, 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
Spec<org.bouncycastle.crypto.BufferedBlockCipher>	getBlockCipherSpec()
protected BufferedBlockCipherAdapter	newCipher(CiphertextHeader header, boolean mode) Creates a new cipher adapter instance suitable for the block cipher used by this class.
void	setBlockCipherSpec(Spec<org.bouncycastle.crypto.BufferedBlockCipher> blockCipherSpec) Sets the block cipher specification.

Methods inherited from class org.cryptacular.bean.AbstractBlockCipherBean

process, process

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

BufferedBlockCipherBean

public BufferedBlockCipherBean()

Creates a new instance.

BufferedBlockCipherBean

public BufferedBlockCipherBean(Spec<org.bouncycastle.crypto.BufferedBlockCipher> blockCipherSpec,
                       KeyStore keyStore,
                       String keyAlias,
                       String keyPassword,
                       Nonce nonce)

Creates a new instance by specifying all properties.

Parameters:

blockCipherSpec - Block cipher specification.

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

getBlockCipherSpec

public Spec<org.bouncycastle.crypto.BufferedBlockCipher> getBlockCipherSpec()

Returns:

Block cipher specification.

setBlockCipherSpec

public void setBlockCipherSpec(Spec<org.bouncycastle.crypto.BufferedBlockCipher> blockCipherSpec)

Sets the block cipher specification.

Parameters:

blockCipherSpec - Describes a block cipher in terms of algorithm, mode, and padding.

newCipher

protected BufferedBlockCipherAdapter newCipher(CiphertextHeader header,
                                   boolean mode)

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

Specified by:

newCipher in class AbstractBlockCipherBean

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.