Class GF256

java.lang.Object

com.itextpdf.text.pdf.qrcode.GF256

public final class GF256
extends Object

This class contains utility methods for performing mathematical operations over the Galois Field GF(256). Operations use a given primitive polynomial in calculations.

Throughout this package, elements of GF(256) are represented as an int for convenience and speed (but at the cost of memory). Only the bottom 8 bits are really used.

Since:

5.0.2

Author:

Sean Owen

Field Summary

Fields

Modifier and Type	Field	Description
static final GF256	DATA_MATRIX_FIELD
static final GF256	QR_CODE_FIELD

Method Summary

Methods inherited from class Object

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

Field Details

QR_CODE_FIELD

public static final GF256 QR_CODE_FIELD

DATA_MATRIX_FIELD

public static final GF256 DATA_MATRIX_FIELD