Package 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	Description
BufferedBlockCipherBean(Spec<org.bouncycastle.crypto.BufferedBlockCipher> blockCipherSpec, KeyStore keyStore, String keyAlias, String keyPassword, Nonce nonce)	Creates a buffered block cipher bean.

Method Summary

Modifier and Type	Method	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.

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

Methods inherited from class java.lang.Object

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

Constructor Details

BufferedBlockCipherBean

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

Creates a buffered block cipher bean.

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 Details

getBlockCipherSpec

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

Returns:

Block cipher specification.

newCipher

protected BufferedBlockCipherAdapter newCipher(CiphertextHeader header,
 boolean mode)

Description copied from class: AbstractBlockCipherBean

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.