iaik.security.ec.common

Class EdStandardizedParameterFactory

java.lang.Object

iaik.security.ec.common.EdStandardizedParameterFactory

public final class EdStandardizedParameterFactory
extends Object

This class is a collection of twisted Edwards curve domain parameters (for EdDSA) and Montgomery curve domain parameters (for X22519 and X448). Parameters are either referenced by their names, by their OIDs or by the bitlength. These parameters are specific to their use in EdDSA and ECDH.

Author:

Christian Hanser, Lukas Prokop, Sebastian Ramacher

See Also:

EdParameterSpec

Method Summary

Modifier and Type	Method and Description
static Enumeration<String>	getNames() Returns the standard names of the supported curves.
static Enumeration<String>	getOIDs() Returns the standard OIDs of the supported curves.
static EdParameterSpec	getParameters(ECGenParameterSpec params) Returns a standardized elliptic curve for a given parameter spec holding a standard name.
static EdParameterSpec	getParametersByName(String name) Returns a standardized Edwards curve for a given standard name.
static EdParameterSpec	getParametersByOID(String oid) Returns a standardized Edwards curve for a given OID.

Methods inherited from class java.lang.Object

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

Method Detail

getParameters

public static EdParameterSpec getParameters(ECGenParameterSpec params)

Returns a standardized elliptic curve for a given parameter spec holding a standard name.

Parameters:

params - the parameter spec

Returns:

an elliptic curve for the given standard name or null if there is no such curve

getParametersByName

public static EdParameterSpec getParametersByName(String name)

Returns a standardized Edwards curve for a given standard name.

Parameters:

name - the standard name

Returns:

an elliptic curve for the given standard name or null if there is no such curve

getParametersByOID

public static EdParameterSpec getParametersByOID(String oid)

Returns a standardized Edwards curve for a given OID.

Parameters:

oid - the object identifier

Returns:

an elliptic curve for the given OID or null if there is no such curve

getNames

public static Enumeration<String> getNames()

Returns the standard names of the supported curves.

Returns:

an enumeration holding the standard names

getOIDs

public static Enumeration<String> getOIDs()

Returns the standard OIDs of the supported curves.

Returns:

an enumeration holding the standard OIDs