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org.h2.store.fs.encrypt

pack-priv Class XTS

Class Inheritance

extends Object

java.lang.Object
org.h2.store.fs.encrypt.XTS

Imports

org.h2.security.BlockCipher

An XTS implementation as described in IEEE P1619 (Standard Architecture for Encrypted Shared Storage Media). See also http://axelkenzo.ru/downloads/1619-2007-NIST-Submission.pdf

Field Summary

Modifier and Type	Field and Description
private final BlockCipher	cipher
private static final int	CIPHER_BLOCK_SIZE The AES encryption block size.
private static final int	GF_128_FEEDBACK Galois field feedback.

Constructor Summary

Access	Constructor and Description
pack-priv	XTS(BlockCipher cipher)

Method Summary

Modifier and Type	Method and Description
pack-priv void	decrypt(long the (sector) id id, int the number of bytes len, byte[] the data data, int the offset within the data offset) Decrypt the data.
pack-priv void	encrypt(long the (sector) id id, int the number of bytes len, byte[] the data data, int the offset within the data offset) Encrypt the data.
private byte[]	initTweak(long id)
private static void	swap(byte[] data, int source, int target, int len)
private static void	updateTweak(byte[] tweak)
private static void	xorTweak(byte[] data, int pos, byte[] tweak)

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

Field Detail

cipher	back to summary
private final BlockCipher cipher

CIPHER_BLOCK_SIZE	back to summary
private static final int CIPHER_BLOCK_SIZE The AES encryption block size.

GF_128_FEEDBACK	back to summary
private static final int GF_128_FEEDBACK Galois field feedback.

Constructor Detail

XTS	back to summary
pack-priv XTS(BlockCipher cipher)

Method Detail

decrypt

back to summary

pack-priv void decrypt(long id, int len, byte[] data, int offset)

Decrypt the data.

Parameters

id:long: the (sector) id
len:int: the number of bytes
data:byte[]: the data
offset:int: the offset within the data

encrypt

back to summary

pack-priv void encrypt(long id, int len, byte[] data, int offset)

Encrypt the data.

Parameters

id:long: the (sector) id
len:int: the number of bytes
data:byte[]: the data
offset:int: the offset within the data

initTweak	back to summary
private byte[] initTweak(long id)

swap	back to summary
private static void swap(byte[] data, int source, int target, int len)

updateTweak	back to summary
private static void updateTweak(byte[] tweak)

xorTweak	back to summary
private static void xorTweak(byte[] data, int pos, byte[] tweak)