org.bouncycastle.openpgp.operator
Class PGPAEADUtil

java.lang.Object
  org.bouncycastle.openpgp.operator.PGPAEADUtil

Direct Known Subclasses:

BcAEADUtil

public class PGPAEADUtil

extends java.lang.Object

Constructor Summary

protected

PGPAEADUtil()

Method Summary

protected static long	getChunkLength(int chunkSize) Calculate an actual chunk length from the encoded chunk size.
protected static byte[]	getNonce(byte[] iv, long chunkIndex) Generate a nonce by xor-ing the given iv with the chunk index.
protected static void	xorChunkId(byte[] nonce, long chunkIndex) XOR the byte array with the chunk index in-place.

Methods inherited from class java.lang.Object

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

Constructor Detail

PGPAEADUtil

protected PGPAEADUtil()

Method Detail

getNonce

protected static byte[] getNonce(byte[] iv,
                                 long chunkIndex)

Generate a nonce by xor-ing the given iv with the chunk index.

Parameters:

iv - initialization vector

chunkIndex - chunk index

Returns:

nonce

xorChunkId

protected static void xorChunkId(byte[] nonce,
                                 long chunkIndex)

XOR the byte array with the chunk index in-place.

Parameters:

nonce - byte array

chunkIndex - chunk index

getChunkLength

protected static long getChunkLength(int chunkSize)

Calculate an actual chunk length from the encoded chunk size.

Parameters:

chunkSize - encoded chunk size

Returns:

decoded length