iaik.security.ec.math.curve

Enum BinaryCurveCoordinateTypes

java.lang.Object

java.lang.Enum<BinaryCurveCoordinateTypes>

iaik.security.ec.math.curve.BinaryCurveCoordinateTypes

All Implemented Interfaces:

CoordinateTypes, Serializable, Comparable<BinaryCurveCoordinateTypes>

public enum BinaryCurveCoordinateTypes
extends Enum<BinaryCurveCoordinateTypes>
implements CoordinateTypes

Enumeration holding the different binary curve types that are implemented in this library.

Author:

Christian Hanser

See Also:

BinaryWeierstrassCurveFactory

Enum Constant Summary

Enum Constants

Enum Constant and Description
AFFINE Denotes affine coordinates.
JACOBIAN Denotes Jacobian coordinates.
LOPEZ_DAHAB Denotes Lopez-Dahab coordinates.
PROJECTIVE Denotes projective coordinates.

Method Summary

Modifier and Type	Method and Description
static BinaryCurveCoordinateTypes	valueOf(String name) Returns the enum constant of this type with the specified name.
static BinaryCurveCoordinateTypes[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

AFFINE

public static final BinaryCurveCoordinateTypes AFFINE

Denotes affine coordinates. This is clearly the slowest type of coordinates. Use one of JACOBIAN or LOPEZ_DAHAB to get improved performance.

PROJECTIVE

public static final BinaryCurveCoordinateTypes PROJECTIVE

Denotes projective coordinates. This type of coordinates is well-suited if only additions are required. Otherwise it is recommended to use one of JACOBIAN or LOPEZ_DAHAB.

JACOBIAN

public static final BinaryCurveCoordinateTypes JACOBIAN

Denotes Jacobian coordinates. This is a very fast type of coordinates, nevertheless it is still slower than LOPEZ_DAHAB.

LOPEZ_DAHAB

public static final BinaryCurveCoordinateTypes LOPEZ_DAHAB

Denotes Lopez-Dahab coordinates. This type of coordinates is clearly the fastest. Hence, in IAIK ECCelerate™ it is being used as default.

Method Detail

values

public static BinaryCurveCoordinateTypes[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (BinaryCurveCoordinateTypes c : BinaryCurveCoordinateTypes.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static BinaryCurveCoordinateTypes valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null