com.itextpdf.bouncycastle.crypto.modes

Class GCMBlockCipherBC

java.lang.Object

com.itextpdf.bouncycastle.crypto.modes.GCMBlockCipherBC

All Implemented Interfaces:

IGCMBlockCipher

public class GCMBlockCipherBC
extends Object
implements IGCMBlockCipher

This class provides the functionality of a cryptographic cipher of aes-gcm for encryption and decryption via wrapping the corresponding GCMBlockCipher class from bouncy-castle.

Constructor Summary

Constructors

Constructor and Description
GCMBlockCipherBC(org.bouncycastle.crypto.modes.GCMBlockCipher cipher) Creates new wrapper for GCMBlockCipher aes-gcm block cipher class.

Method Summary

Modifier and Type	Method and Description
void	doFinal(byte[] plainText, int i)
boolean	equals(Object o)
org.bouncycastle.crypto.modes.GCMBlockCipher	getCipher() Gets actual org.bouncycastle object being wrapped.
int	getOutputSize(int len)
int	getUpdateOutputSize(int len)
int	hashCode()
void	init(boolean forEncryption, byte[] key, int macSizeBits, byte[] iv)
void	processBytes(byte[] input, int inputOffset, int len, byte[] output, int outOffset)
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

GCMBlockCipherBC

public GCMBlockCipherBC(org.bouncycastle.crypto.modes.GCMBlockCipher cipher)

Creates new wrapper for GCMBlockCipher aes-gcm block cipher class.

Parameters:

cipher - bouncy-castle class to wrap

Method Detail

getCipher

public org.bouncycastle.crypto.modes.GCMBlockCipher getCipher()

Gets actual org.bouncycastle object being wrapped.

Returns:

wrapped GCMBlockCipher

init

public void init(boolean forEncryption,
                 byte[] key,
                 int macSizeBits,
                 byte[] iv)

Specified by:

init in interface IGCMBlockCipher

getUpdateOutputSize

public int getUpdateOutputSize(int len)

Specified by:

getUpdateOutputSize in interface IGCMBlockCipher

processBytes

public void processBytes(byte[] input,
                         int inputOffset,
                         int len,
                         byte[] output,
                         int outOffset)

Specified by:

processBytes in interface IGCMBlockCipher

getOutputSize

public int getOutputSize(int len)

Specified by:

getOutputSize in interface IGCMBlockCipher

doFinal

public void doFinal(byte[] plainText,
                    int i)

Specified by:

doFinal in interface IGCMBlockCipher

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object