Package dk.jonaslindstrom.ruffini.elliptic.structures

Class Curve25519

java.lang.Object

dk.jonaslindstrom.ruffini.elliptic.structures.MontgomeryCurve<BigInteger,dk.jonaslindstrom.ruffini.finitefields.BigPrimeField>

dk.jonaslindstrom.ruffini.elliptic.structures.Curve25519

All Implemented Interfaces:

dk.jonaslindstrom.ruffini.common.abstractions.AdditiveGroup<AffinePoint<BigInteger>>, dk.jonaslindstrom.ruffini.common.abstractions.CommutativeMonoid<AffinePoint<BigInteger>>, dk.jonaslindstrom.ruffini.common.abstractions.Set<AffinePoint<BigInteger>>

public class Curve25519
extends MontgomeryCurve<BigInteger,dk.jonaslindstrom.ruffini.finitefields.BigPrimeField>

Field Summary

Fields

Modifier and Type	Field	Description
static BigInteger	A
static AffinePoint<BigInteger>	BASE_POINT
static BigInteger	P
static BigInteger	SUBGROUP_ORDER

Fields inherited from class dk.jonaslindstrom.ruffini.elliptic.structures.MontgomeryCurve

B, field

Constructor Summary

Constructors

Constructor	Description
Curve25519()

Method Summary

Modifier and Type	Method	Description
AffinePoint<BigInteger>	decodePoint(byte[] bytes)
BigInteger	decodeScalar(byte[] bytes)
static byte[]	encodePoint(AffinePoint<BigInteger> point)

Methods inherited from class dk.jonaslindstrom.ruffini.elliptic.structures.MontgomeryCurve

add, discriminant, equals, getA, getB, getCorrespondingWeierstrassCurve, getField, getZero, jInvariant, negate, toString, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface dk.jonaslindstrom.ruffini.common.abstractions.AdditiveGroup

doubling, isZero, scale, scale, subtract

Methods inherited from interface dk.jonaslindstrom.ruffini.common.abstractions.CommutativeMonoid

add, add

Field Details

BASE_POINT

public static AffinePoint<BigInteger> BASE_POINT

SUBGROUP_ORDER

public static BigInteger SUBGROUP_ORDER

P

public static BigInteger P

A

public static BigInteger A

Constructor Details

Curve25519

public Curve25519()

Method Details

encodePoint

public static byte[] encodePoint(AffinePoint<BigInteger> point)

decodeScalar

public BigInteger decodeScalar(byte[] bytes)

decodePoint

public AffinePoint<BigInteger> decodePoint(byte[] bytes)
                                    throws dk.jonaslindstrom.ruffini.common.exceptions.InvalidParametersException

Throws:

dk.jonaslindstrom.ruffini.common.exceptions.InvalidParametersException