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  12  * version 2 for more details (a copy is included in the LICENSE file that
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  23 
  24 /**
  25  * @test
  26  * @bug 6405536
  27  * @summary Verify that we can use ECGenParameterSpec
  28  * @author Andreas Sterbenz
  29  * @library ..
  30  */
  31 
  32 import java.util.*;
  33 
  34 import java.security.*;
  35 import java.security.spec.*;
  36 import java.security.interfaces.ECPublicKey;
  37 
  38 public class TestECGenSpec extends PKCS11Test {
  39 
  40     public static void main(String[] args) throws Exception {
  41         main(new TestECGenSpec());
  42     }
  43 
  44     public void main(Provider p) throws Exception {
  45         if (p.getService("Signature", "SHA1withECDSA") == null) {
  46             System.out.println("Provider does not support ECDSA, skipping...");
  47             return;
  48         }
  49 
  50         if (isNSS(p) && getNSSVersion() >= 3.11 && getNSSVersion() < 3.12) {
  51             System.out.println("NSS 3.11 has a DER issue that recent " +
  52                     "version do not.");
  53             return;
  54         }
  55 
  56         String[] names = { "secp256r1", "NIST P-192", "sect163k1", "1.3.132.0.26",
  57             "X9.62 c2tnb239v1"};
  58         int curves = 1;
  59         if (getNSSECC() == ECCState.Extended) {
  60             curves = names.length;
  61         }
  62         int[] lengths = {256, 192, 163, 233, 239};
  63         for (int i = 0; i < curves; i++) {
  64             String name = names[i];
  65             int len = lengths[i];
  66             System.out.println("Testing " + name + "...");
  67             ECGenParameterSpec spec = new ECGenParameterSpec(name);
  68 
  69             AlgorithmParameters algParams = AlgorithmParameters.getInstance("EC", p);
  70             algParams.init(spec);
  71             ECParameterSpec ecSpec = algParams.getParameterSpec(ECParameterSpec.class);
  72             System.out.println(ecSpec);
  73             // no public API to get the curve name, so rely on toString();
  74             if (ecSpec.toString().contains(name) == false) {
  75                 throw new Exception("wrong curve");
  76             }
  77 
  78             algParams = AlgorithmParameters.getInstance("EC", p);
  79             algParams.init(ecSpec);
  80             ECGenParameterSpec genSpec = algParams.getParameterSpec(ECGenParameterSpec.class);
  81             System.out.println(genSpec.getName());
  82 
  83             KeyPairGenerator kpg = KeyPairGenerator.getInstance("EC", p);
  84             kpg.initialize(spec);
  85             KeyPair kp = kpg.generateKeyPair();
  86             System.out.println(kp.getPrivate());
  87             ECPublicKey publicKey = (ECPublicKey)kp.getPublic();
  88             if (publicKey.getParams().getCurve().getField().getFieldSize() != len) {
  89                 throw new Exception("wrong curve");
  90             }
  91             System.out.println();
  92         }
  93     }
  94 
  95 }