com.tencent.kona.sun.security.util.math.intpoly

Class IntegerPolynomial25519

java.lang.Object

com.tencent.kona.sun.security.util.math.intpoly.IntegerPolynomial

com.tencent.kona.sun.security.util.math.intpoly.IntegerPolynomial25519

All Implemented Interfaces:

IntegerFieldModuloP

public final class IntegerPolynomial25519
extends IntegerPolynomial

Nested Class Summary

Nested classes/interfaces inherited from class com.tencent.kona.sun.security.util.math.intpoly.IntegerPolynomial

IntegerPolynomial.MutableElement

Field Summary

Fields

Modifier and Type	Field and Description
static java.math.BigInteger	MODULUS
static IntegerPolynomial25519	ONE

Fields inherited from class com.tencent.kona.sun.security.util.math.intpoly.IntegerPolynomial

bitsPerLimb, numLimbs, TWO

Method Summary

Modifier and Type	Method and Description
protected void	finalCarryReduceLast(long[] limbs) Carry out of the last limb and reduce back in.
protected void	mult(long[] a, long[] b, long[] r) Multiply two IntegerPolynomial representations (a and b) and store the result in an IntegerPolynomial representation (r).
protected void	reduce(long[] a) Reduce an IntegerPolynomial representation (a) and store the result in a.
protected void	reduceIn(long[] limbs, long v, int i)
protected void	square(long[] a, long[] r) Multiply an IntegerPolynomial representation (a) with itself and store the result in an IntegerPolynomialRepresentation (r).

Methods inherited from class com.tencent.kona.sun.security.util.math.intpoly.IntegerPolynomial

addLimbs, addLimbsModPowerTwo, carry, carry, carryOut, carryValue, conditionalAssign, conditionalSwap, decode, encode, encode, encodeSmall, evaluate, finalReduce, get0, get1, getElement, getElement, getMaxAdds, getNumLimbs, getSize, getSmallValue, limbsToByteArray, multByInt, postEncodeCarry, setLimbsValuePositive

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.tencent.kona.sun.security.util.math.IntegerFieldModuloP

getElement

Field Detail

MODULUS

public static final java.math.BigInteger MODULUS

ONE

public static final IntegerPolynomial25519 ONE

Method Detail

reduceIn

protected void reduceIn(long[] limbs,
                        long v,
                        int i)

Specified by:

reduceIn in class IntegerPolynomial

finalCarryReduceLast

protected void finalCarryReduceLast(long[] limbs)

Description copied from class: IntegerPolynomial

Carry out of the last limb and reduce back in. This method will be called as part of the "finalReduce" operation that puts the representation into a fully-reduced form. It is representation- specific, because representations have different amounts of empty space in the high-order limb. Requires that limbs.length=numLimbs.

Specified by:

finalCarryReduceLast in class IntegerPolynomial

mult

protected void mult(long[] a,
                    long[] b,
                    long[] r)

Description copied from class: IntegerPolynomial

Multiply two IntegerPolynomial representations (a and b) and store the result in an IntegerPolynomial representation (r). Requires that a.length == b.length == r.length == numLimbs. It is allowed for a and r to be the same array.

Specified by:

mult in class IntegerPolynomial

reduce

protected void reduce(long[] a)

Description copied from class: IntegerPolynomial

Reduce an IntegerPolynomial representation (a) and store the result in a. Requires that a.length == numLimbs.

Specified by:

reduce in class IntegerPolynomial

square

protected void square(long[] a,
                      long[] r)

Description copied from class: IntegerPolynomial

Multiply an IntegerPolynomial representation (a) with itself and store the result in an IntegerPolynomialRepresentation (r). Requires that a.length == r.length == numLimbs. It is allowed for a and r to be the same array.

Specified by:

square in class IntegerPolynomial