iaik.security.ec.provider

Enum OptimizationLevel

java.lang.Object

java.lang.Enum<OptimizationLevel>

iaik.security.ec.provider.OptimizationLevel

All Implemented Interfaces:

Serializable, Comparable<OptimizationLevel>

public enum OptimizationLevel
extends Enum<OptimizationLevel>

Enumeration that is used to determine the space/time tradeoff for the arithmetical routines in the addon.

Note that memory optimizations lead to reduced startup times and moderate speed, where speed optimizations lead to higher memory consumption and increased startup times. The speed optimization levels are especially suited for server environments.

Author:

Christian Hanser

Enum Constant Summary

Enum Constants

Enum Constant and Description
DEFAULT Optimizes the arithmetical routines so that a good speed level is achieved and the memory consumption is kept moderate.
FULL_SPEED Aggressively optimizes the arithmetical routines for best speed using a large amount of memory.
IMPROVED_SPEED Aggressively optimizes the arithmetical routines for speed using a large amount of memory.
LIMITED_MEMORY Optimizes the arithmetical routines to save memory.
MEMORY Optimizes the arithmetical routines so that a reasonable speed level is achieved and the memory consumption is kept low.
SPEED Optimizes the arithmetical routines for speed using a larger amount of memory.

Method Summary

Modifier and Type	Method and Description
int	getW() Deprecated.
static OptimizationLevel	valueOf(String name) Returns the enum constant of this type with the specified name.
static OptimizationLevel[]	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

LIMITED_MEMORY

public static final OptimizationLevel LIMITED_MEMORY

Optimizes the arithmetical routines to save memory.

MEMORY

public static final OptimizationLevel MEMORY

Optimizes the arithmetical routines so that a reasonable speed level is achieved and the memory consumption is kept low.

DEFAULT

public static final OptimizationLevel DEFAULT

Optimizes the arithmetical routines so that a good speed level is achieved and the memory consumption is kept moderate.

SPEED

public static final OptimizationLevel SPEED

Optimizes the arithmetical routines for speed using a larger amount of memory.

IMPROVED_SPEED

public static final OptimizationLevel IMPROVED_SPEED

Aggressively optimizes the arithmetical routines for speed using a large amount of memory. Note: this option results in longer startup times.

FULL_SPEED

public static final OptimizationLevel FULL_SPEED

Aggressively optimizes the arithmetical routines for best speed using a large amount of memory. Note: this option results in longer startup times.

Method Detail

values

public static OptimizationLevel[] 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 (OptimizationLevel c : OptimizationLevel.values())
    System.out.println(c);

Returns:

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

valueOf

public static OptimizationLevel 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

getW

@Deprecated
public int getW()

Deprecated.

Returns the window size to be used by the scalar multipliers.

Returns:

the window size