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/**
* @test
* @bug 6405536
* @summary Verify that we can use ECGenParameterSpec
* @author Andreas Sterbenz
* @library ..
*/
import java.util.*;
import java.security.*;
import java.security.spec.*;
import java.security.interfaces.ECPublicKey;
public class TestECGenSpec extends PKCS11Test {
public static void main(String[] args) throws Exception {
main(new TestECGenSpec());
}
public void main(Provider p) throws Exception {
if (p.getService("Signature", "SHA1withECDSA") == null) {
System.out.println("Provider does not support ECDSA, skipping...");
return;
}
String[] names = { "NIST P-192", "sect163k1", "1.3.132.0.26", "X9.62 c2tnb239v1"};
int[] lengths = {192, 163, 233, 239};
for (int i = 0; i < names.length; i++) {
String name = names[i];
int len = lengths[i];
System.out.println("Testing " + name + "...");
ECGenParameterSpec spec = new ECGenParameterSpec(name);
AlgorithmParameters algParams = AlgorithmParameters.getInstance("EC", p);
algParams.init(spec);
ECParameterSpec ecSpec = algParams.getParameterSpec(ECParameterSpec.class);
System.out.println(ecSpec);
// no public API to get the curve name, so rely on toString();
if (ecSpec.toString().contains(name) == false) {
throw new Exception("wrong curve");
}
algParams = AlgorithmParameters.getInstance("EC", p);
algParams.init(ecSpec);
ECGenParameterSpec genSpec = algParams.getParameterSpec(ECGenParameterSpec.class);
System.out.println(genSpec.getName());
KeyPairGenerator kpg = KeyPairGenerator.getInstance("EC", p);
kpg.initialize(spec);
KeyPair kp = kpg.generateKeyPair();
System.out.println(kp.getPrivate());
ECPublicKey publicKey = (ECPublicKey)kp.getPublic();
if (publicKey.getParams().getCurve().getField().getFieldSize() != len) {
throw new Exception("wrong curve");
}
System.out.println();
}
}
}