/*
* Copyright 2012-2014 Brian Campbell
*
* 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 org.jose4j.keys;
import junit.framework.TestCase;
import org.junit.Assert;
import org.junit.Test;
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.PublicKey;
import java.security.cert.X509Certificate;
import java.security.interfaces.ECPublicKey;
import java.security.spec.ECGenParameterSpec;
import java.security.spec.ECParameterSpec;
import java.util.LinkedHashMap;
import java.util.Map;
/**
*/
public class EllipticCurvesTest
{
@Test
public void testGetName() throws Exception
{
String b64d = "MIIBbjCCARKgAwIBAgIGAT0hzf2zMAwGCCqGSM49BAMCBQAwPDENMAsGA1UEBhMEbnVsbDErMCkGA1UEAxMiYXV0by1nZW5lcmF0ZWQgd3JhcHBlciBjZXJ0aWZpY2F0ZTAeFw0xMzAyMjgxNzE2MjBaFw0xNDAyMjgxNzE2MjBaMDwxDTALBgNVBAYTBG51bGwxKzApBgNVBAMTImF1dG8tZ2VuZXJhdGVkIHdyYXBwZXIgY2VydGlmaWNhdGUwWTATBgcqhkjOPQIBBggqhkjOPQMBBwNCAARwLMpLp9BHKkFoGUE25feUccsQMJQY8JlFV7DIC596FBdjvcbxvfiStEDkcA4WOZThyQnPZlrPKqc2A4QuQRDmMAwGCCqGSM49BAMCBQADSAAwRQIhAPladiFs6XVS7fqfuvC8DEY0kmaoKWuGE30AA88NsIYzAiB9gUEGxDjEiLrjgjl9ds7n+7iBDhS4C5V2MpTG2QND5A==";
X509Util x5u = new X509Util();
X509Certificate x509Certificate = x5u.fromBase64Der(b64d);
PublicKey publicKey = x509Certificate.getPublicKey();
ECPublicKey ecPublicKey = (ECPublicKey) publicKey;
String name = EllipticCurves.getName(ecPublicKey.getParams().getCurve());
Assert.assertEquals(EllipticCurves.P_256, name);
}
@Test
public void testNames() throws Exception
{
// Test my names and the EllipticCurves class against the 'standard name' which I didn't know about
// but someone pointed me to "Implementing ECC with Java Standard Edition 7" at http://www.academicpub.org/PaperInfo.aspx?PaperID=14496
// which educated me a bit
Map<String,String> names = new LinkedHashMap<>();
names.put("secp256r1", EllipticCurves.P_256);
names.put("secp384r1", EllipticCurves.P_384);
names.put("secp521r1", EllipticCurves.P_521);
for (Map.Entry<String,String> e : names.entrySet())
{
ECGenParameterSpec ecGenParameterSpec = new ECGenParameterSpec(e.getKey());
KeyPairGenerator kpg = KeyPairGenerator.getInstance("EC");
kpg.initialize(ecGenParameterSpec);
KeyPair keyPair = kpg.generateKeyPair();
ECPublicKey ecpub = (ECPublicKey) keyPair.getPublic();
ECParameterSpec params = ecpub.getParams();
Assert.assertEquals(e.getValue(), EllipticCurves.getName(params.getCurve()));
}
}
}