com.tencent.kona.sun.security.ec

Class ECOperations

java.lang.Object

com.tencent.kona.sun.security.ec.ECOperations

public class ECOperations
extends java.lang.Object

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ECOperations.IntermediateValueException

Field Summary

Fields

Modifier and Type	Field and Description
static java.security.spec.ECPoint	INFINITY
static ECOperations	SM2OPS

Constructor Summary

Constructors

Constructor and Description
ECOperations(IntegerModuloP b, IntegerFieldModuloP orderField)

Method Summary

Modifier and Type	Method and Description
static boolean	allZero(byte[] arr)
boolean	checkOrder(java.security.spec.ECPoint point)
static java.util.Optional<ECOperations>	forParameters(java.security.spec.ECParameterSpec params)
byte[]	generatePrivateScalar(java.security.SecureRandom random)
IntegerFieldModuloP	getField()
protected ProjectivePoint.Immutable	getNeutral()
IntegerFieldModuloP	getOrderField()
boolean	isNeutral(Point p)
MutablePoint	multiply(AffinePoint affineP, byte[] s) Multiply an affine point by a scalar and return the result as a mutable point.
MutablePoint	multiply(java.security.spec.ECPoint ecPoint, byte[] s)
byte[]	seedToScalar(byte[] seedBytes)
void	setSum(MutablePoint p, AffinePoint p2)
AffinePoint	toAffinePoint(java.security.spec.ECPoint ecPoint)
static java.security.spec.ECPoint	toECPoint(Point point)

Methods inherited from class java.lang.Object

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

Field Detail

INFINITY

public static final java.security.spec.ECPoint INFINITY

SM2OPS

public static final ECOperations SM2OPS

Constructor Detail

ECOperations

public ECOperations(IntegerModuloP b,
                    IntegerFieldModuloP orderField)

Method Detail

forParameters

public static java.util.Optional<ECOperations> forParameters(java.security.spec.ECParameterSpec params)

getField

public IntegerFieldModuloP getField()

getOrderField

public IntegerFieldModuloP getOrderField()

getNeutral

protected ProjectivePoint.Immutable getNeutral()

isNeutral

public boolean isNeutral(Point p)

seedToScalar

public byte[] seedToScalar(byte[] seedBytes)
                    throws ECOperations.IntermediateValueException

Throws:

ECOperations.IntermediateValueException

allZero

public static boolean allZero(byte[] arr)

multiply

public MutablePoint multiply(AffinePoint affineP,
                             byte[] s)

Multiply an affine point by a scalar and return the result as a mutable point.

Parameters:

affineP - the point

s - the scalar as a little-endian array

Returns:

the product

multiply

public MutablePoint multiply(java.security.spec.ECPoint ecPoint,
                             byte[] s)

toAffinePoint

public AffinePoint toAffinePoint(java.security.spec.ECPoint ecPoint)

setSum

public void setSum(MutablePoint p,
                   AffinePoint p2)

checkOrder

public boolean checkOrder(java.security.spec.ECPoint point)

generatePrivateScalar

public byte[] generatePrivateScalar(java.security.SecureRandom random)

toECPoint

public static java.security.spec.ECPoint toECPoint(Point point)