com.safenetinc.luna.provider.param

Class LunaNamedCurve

java.lang.Object

java.security.spec.ECParameterSpec

com.safenetinc.luna.provider.param.LunaNamedCurve

All Implemented Interfaces:

AlgorithmParameterSpec

public final class LunaNamedCurve
extends ECParameterSpec

Named elliptic curve support

Method Summary

Modifier and Type	Method and Description
static LunaNamedCurve	getECParameterSpec(int length) Return EC parameters for the specified field size.
static LunaNamedCurve	getECParameterSpec(com.safenetinc.luna.der.ObjectIdentifier oid) Return a NamedCurve for the specified OID or null if unknown.
static LunaNamedCurve	getECParameterSpec(String name) Checks the OID map for the given string.
static LunaNamedCurve	getECParameterSpecById(int id) Returns the LunaNamedCurve corresponding to the given internal curve id.
byte[]	getEncoded()
String	getName()
static LunaNamedCurve	getNamedCurve(ECParameterSpec params) Look up the LunaNamedCurve corresponding to the parameters in the given ECParameterSpec object.
com.safenetinc.luna.der.ObjectIdentifier	getObjectIdentifier()
static Collection<LunaNamedCurve>	knownECParameterSpecs()
boolean	matches(ECParameterSpec params)
String	toString()

Methods inherited from class java.security.spec.ECParameterSpec

getCofactor, getCurve, getGenerator, getOrder

Methods inherited from class java.lang.Object

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

Method Detail

getEncoded

public byte[] getEncoded()

getObjectIdentifier

public com.safenetinc.luna.der.ObjectIdentifier getObjectIdentifier()

getName

public String getName()

toString

public String toString()

Overrides:

toString in class Object

matches

public boolean matches(ECParameterSpec params)

getECParameterSpec

public static LunaNamedCurve getECParameterSpec(com.safenetinc.luna.der.ObjectIdentifier oid)

Return a NamedCurve for the specified OID or null if unknown.

Parameters:

oid - object id

Returns:

ECParameterSpec

getECParameterSpec

public static LunaNamedCurve getECParameterSpec(String name)

Checks the OID map for the given string. If a match is found, return that curve. If no match is found, return any match that's found in the common-name map.

Parameters:

name - OID or common name

Returns:

The LunaNamedCurve corresponding to the OID/name, if found

getECParameterSpec

public static LunaNamedCurve getECParameterSpec(int length)

Return EC parameters for the specified field size. If there are known NIST recommended parameters for the given length, they are returned. Otherwise, if there are multiple matches for the given size, an arbitrary one is returned. If no parameters are known, the method returns null. NOTE that this method returns both prime and binary curves.

Parameters:

length - field size

Returns:

An ECParameterSpec with the specified field size

getECParameterSpecById

public static LunaNamedCurve getECParameterSpecById(int id)

Returns the LunaNamedCurve corresponding to the given internal curve id. This method exists for backwards compatibility with older versions of the Luna provider, and its use is discouraged.

Parameters:

id - An internal numerical identifier for this curve.

Returns:

The LunaNamedCurve corresponding to that id

getNamedCurve

public static LunaNamedCurve getNamedCurve(ECParameterSpec params)

Look up the LunaNamedCurve corresponding to the parameters in the given ECParameterSpec object.

Parameters:

params - The EC parameter spec to convert

Returns:

The corresponding LunaNamedCurve, or null if the specs represent an unknown or non-named curve

knownECParameterSpecs

public static Collection<LunaNamedCurve> knownECParameterSpecs()