org.cryptacular.bean

Class AEADBlockCipherBean

java.lang.Object

org.cryptacular.bean.AbstractCipherBean

org.cryptacular.bean.AbstractBlockCipherBean

org.cryptacular.bean.AEADBlockCipherBean

All Implemented Interfaces:

CipherBean

public class AEADBlockCipherBean
extends AbstractBlockCipherBean

Cipher bean that performs encryption with a block cipher in AEAD mode (e.g. GCM, CCM).

Author:

Middleware Services

Field Summary

Fields

Modifier and Type	Field and Description
static int	MAC_SIZE_BITS Mac size in bits.

Constructor Summary

Constructors

Constructor and Description
AEADBlockCipherBean() Creates a new instance.
AEADBlockCipherBean(Spec<org.bouncycastle.crypto.modes.AEADBlockCipher> blockCipherSpec, KeyStore keyStore, String keyAlias, String keyPassword, Nonce nonce) Creates a new instance by specifying all properties.

Method Summary

Modifier and Type	Method and Description
void	decrypt(InputStream input, OutputStream output) Decrypts the data from the input stream onto the output stream using a symmetric cipher.
void	encrypt(InputStream input, OutputStream output) Encrypts the data from the input stream onto the output stream using a symmetric cipher.
Spec<org.bouncycastle.crypto.modes.AEADBlockCipher>	getBlockCipherSpec()
protected AEADBlockCipherAdapter	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.modes.AEADBlockCipher> blockCipherSpec) Sets the AEAD block cipher specification.

Methods inherited from class org.cryptacular.bean.AbstractBlockCipherBean

process, process

Methods inherited from class org.cryptacular.bean.AbstractCipherBean

decrypt, 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

Field Detail

MAC_SIZE_BITS

public static final int MAC_SIZE_BITS

Mac size in bits.

See Also:

Constant Field Values

Constructor Detail

AEADBlockCipherBean

public AEADBlockCipherBean()

Creates a new instance.

AEADBlockCipherBean

public AEADBlockCipherBean(Spec<org.bouncycastle.crypto.modes.AEADBlockCipher> 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.modes.AEADBlockCipher> getBlockCipherSpec()

Returns:

Block cipher specification.

setBlockCipherSpec

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

Sets the AEAD block cipher specification.

Parameters:

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

encrypt

public void encrypt(InputStream input,
                    OutputStream output)

Description copied from interface: CipherBean

Encrypts the data from the input stream onto the output stream using a symmetric cipher.

The caller is responsible for providing and managing the streams (e.g. closing them when finished).

Specified by:

encrypt in interface CipherBean

Overrides:

encrypt in class AbstractCipherBean

Parameters:

input - Input stream containing plaintext data to encrypt.

output - Output stream containing ciphertext produced by cipher in encryption mode.

decrypt

public void decrypt(InputStream input,
                    OutputStream output)

Description copied from interface: CipherBean

Decrypts the data from the input stream onto the output stream using a symmetric cipher.

The caller is responsible for providing and managing the streams (e.g. closing them when finished).

Specified by:

decrypt in interface CipherBean

Overrides:

decrypt in class AbstractCipherBean

Parameters:

input - Input stream containing ciphertext data to decrypt.

output - Output stream containing plaintext produced by cipher in decryption mode.

newCipher

protected AEADBlockCipherAdapter 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.