org.bouncycastle.jce.provider
Class ECUtil

java.lang.Object
  org.bouncycastle.jce.provider.ECUtil

public class ECUtil
extends java.lang.Object

utility class for converting jce/jca ECDSA, ECDH, and ECDHC objects into their org.bouncycastle.crypto counterparts.

Constructor Summary

ECUtil()

Method Summary

(package private) static int[]	convertMidTerms(int[] k) Returns a sorted array of middle terms of the reduction polynomial.
(package private) static AsymmetricKeyParameter	generatePrivateKeyParameter(java.security.PrivateKey key)
(package private) static AsymmetricKeyParameter	generatePublicKeyParameter(java.security.PublicKey key)
static java.lang.String	getCurveName(DERObjectIdentifier oid)
static X9ECParameters	getNamedCurveByOid(DERObjectIdentifier oid)
static DERObjectIdentifier	getNamedCurveOid(java.lang.String name)

Methods inherited from class java.lang.Object

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

Constructor Detail

ECUtil

public ECUtil()

Method Detail

convertMidTerms

static int[] convertMidTerms(int[] k)

Returns a sorted array of middle terms of the reduction polynomial.

Parameters:

k - The unsorted array of middle terms of the reduction polynomial of length 1 or 3.

Returns:

the sorted array of middle terms of the reduction polynomial. This array always has length 3.

generatePublicKeyParameter

static AsymmetricKeyParameter generatePublicKeyParameter(java.security.PublicKey key)
                                                  throws java.security.InvalidKeyException

Throws:

java.security.InvalidKeyException

generatePrivateKeyParameter

static AsymmetricKeyParameter generatePrivateKeyParameter(java.security.PrivateKey key)
                                                   throws java.security.InvalidKeyException

Throws:

java.security.InvalidKeyException

getNamedCurveOid

public static DERObjectIdentifier getNamedCurveOid(java.lang.String name)

getNamedCurveByOid

public static X9ECParameters getNamedCurveByOid(DERObjectIdentifier oid)

getCurveName

public static java.lang.String getCurveName(DERObjectIdentifier oid)