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/*
* Copyright 2017-2019 Rudy De Busscher (https://www.atbash.be)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package be.atbash.ee.security.octopus.keys;
import be.atbash.ee.security.octopus.nimbus.jwk.Curve;
import org.bouncycastle.jce.spec.ECNamedCurveSpec;
import java.security.interfaces.ECKey;
import java.security.spec.ECParameterSpec;
/**
*
*/
public final class ECCurveHelper {
private ECCurveHelper() {
}
public static Curve getCurve(ECKey ecKey) {
ECParameterSpec params = ecKey.getParams();
if (!(params instanceof ECNamedCurveSpec)) {
return null;
}
ECNamedCurveSpec ecPrivateKeySpec = (ECNamedCurveSpec) params;
String namedCurve = ecPrivateKeySpec.getName();
return Curve.parse(namedCurve);
}
}