Examples of java.security.interfaces.ECPublicKey

java.security.interfaces.ECPublicKey
The interface to an elliptic curve (EC) public key. @author Valerie Peng @version 1.4, 11/17/05 @see PublicKey @see ECKey @see java.security.spec.ECPoint @since 1.5

            ps.println("  public exponent: "+rsa.getPublicExponent().toString(16));
            return;
        }
        if ( publK instanceof ECPublicKey ) {
            ps.println("Elliptic curve key:");
            final ECPublicKey ec = (ECPublicKey)publK;
            ps.println("  the affine x-coordinate: "+ec.getW().getAffineX().toString(16));
            ps.println("  the affine y-coordinate: "+ec.getW().getAffineY().toString(16));
            return;
        }
        if ( publK instanceof DHPublicKey ) {
            ps.println("DH key:");
            final DHPublicKey dh = (DHPublicKey)publK;

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        cvcert = (CardVerifiableCertificate) certec;
        role = cvcert.getCVCertificate().getCertificateBody().getAuthorizationTemplate().getAuthorizationField().getRole().name();
        assertEquals("IS", role);
        pk = cvcert.getPublicKey();
        if (pk instanceof ECPublicKey) {
            ECPublicKey epk = (ECPublicKey) pk;
            assertEquals(epk.getAlgorithm(), "ECDSA");
            int len = KeyTools.getKeyLength(epk);
            assertEquals(0, len); // the DVCA does not include all EC parameters
            // in the public key, so we don't know the key
            // length
        } else {

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      assertEquals("secp256r1", spec);
    AlgorithmParameterSpec paramspec = KeyTools.getKeyGenSpec(keys.getPublic());          


        KeyPair keys2 = KeyTools.genKeys(null, paramspec, AlgorithmConstants.KEYALGORITHM_ECDSA);
      assertEquals("ECDSA", keys2.getPublic().getAlgorithm());
      ECPublicKey pk1 = (ECPublicKey)keys.getPublic();
      ECPublicKey pk2 = (ECPublicKey)keys2.getPublic();
      // Verify that it's the same key size
      int len1 = KeyTools.getKeyLength(pk1);
      int len2 = KeyTools.getKeyLength(pk2);
      assertEquals(len1, len2);
      // Verify that the domain parameters are the same
      ECParameterSpec ecs1 = pk1.getParams();
      ECParameterSpec ecs2 = pk2.getParams();
      assertEquals(ecs1.getCofactor(), ecs2.getCofactor());
      assertEquals(ecs1.getOrder(), ecs2.getOrder());
      assertEquals(ecs1.getCurve(), ecs2.getCurve());
      // Verify that it is not the same key though
      assertFalse(pk1.getW().equals(pk2.getW()));
        KeyTools.testKey(keys.getPrivate(), keys.getPublic(), "BC");
        log.trace("<test07GenKeysECDSAAlgorithmSpec()");
    }

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            abstractOutputProcessor.createStartElementAndOutputAsEvent(outputProcessorChain, XMLSecurityConstants.TAG_dsig_J, false, null);
            abstractOutputProcessor.createCharactersAndOutputAsEvent(outputProcessorChain, new Base64(76, new byte[]{'\n'}).encodeToString(j.toByteArray()));
            abstractOutputProcessor.createEndElementAndOutputAsEvent(outputProcessorChain, XMLSecurityConstants.TAG_dsig_J);
            abstractOutputProcessor.createEndElementAndOutputAsEvent(outputProcessorChain, XMLSecurityConstants.TAG_dsig_DSAKeyValue);
        } else if ("EC".equals(algorithm)) {
            ECPublicKey ecPublicKey = (ECPublicKey) publicKey;


            List<XMLSecAttribute> attributes = new ArrayList<XMLSecAttribute>(1);
            attributes.add(abstractOutputProcessor.createAttribute(XMLSecurityConstants.ATT_NULL_URI, "urn:oid:" + ECDSAUtils.getOIDFromPublicKey(ecPublicKey)));
            abstractOutputProcessor.createStartElementAndOutputAsEvent(outputProcessorChain, XMLSecurityConstants.TAG_dsig11_ECKeyValue, true, null);
            abstractOutputProcessor.createStartElementAndOutputAsEvent(outputProcessorChain, XMLSecurityConstants.TAG_dsig11_NamedCurve, false, attributes);
            abstractOutputProcessor.createEndElementAndOutputAsEvent(outputProcessorChain, XMLSecurityConstants.TAG_dsig11_NamedCurve);
            abstractOutputProcessor.createStartElementAndOutputAsEvent(outputProcessorChain, XMLSecurityConstants.TAG_dsig11_PublicKey, false, null);
            abstractOutputProcessor.createCharactersAndOutputAsEvent(outputProcessorChain, new Base64(76, new byte[]{'\n'}).encodeToString(ECDSAUtils.encodePoint(ecPublicKey.getW(), ecPublicKey.getParams().getCurve())));
            abstractOutputProcessor.createEndElementAndOutputAsEvent(outputProcessorChain, XMLSecurityConstants.TAG_dsig11_PublicKey);
            abstractOutputProcessor.createEndElementAndOutputAsEvent(outputProcessorChain, XMLSecurityConstants.TAG_dsig11_ECKeyValue);
        }


        abstractOutputProcessor.createEndElementAndOutputAsEvent(outputProcessorChain, XMLSecurityConstants.TAG_dsig_KeyValue);

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       {
               return new X509EncodedKeySpec(key.getEncoded());
       }
       else if (spec.isAssignableFrom(java.security.spec.ECPublicKeySpec.class) && key instanceof ECPublicKey)
       {
           ECPublicKey k = (ECPublicKey)key;
           if (k.getParams() != null)
           {
               return new java.security.spec.ECPublicKeySpec(k.getW(), k.getParams());
           }
           else
           {
               ECParameterSpec implicitSpec = ProviderUtil.getEcImplicitlyCa();


               return new java.security.spec.ECPublicKeySpec(k.getW(), EC5Util.convertSpec(EC5Util.convertCurve(implicitSpec.getCurve(), implicitSpec.getSeed()), implicitSpec));
           }
       }
       else if (spec.isAssignableFrom(java.security.spec.ECPrivateKeySpec.class) && key instanceof ECPrivateKey)
       {
           ECPrivateKey k = (ECPrivateKey)key;


           if (k.getParams() != null)
           {
               return new java.security.spec.ECPrivateKeySpec(k.getS(), k.getParams());
           }
           else
           {
               ECParameterSpec implicitSpec = ProviderUtil.getEcImplicitlyCa();


               return new java.security.spec.ECPrivateKeySpec(k.getS(), EC5Util.convertSpec(EC5Util.convertCurve(implicitSpec.getCurve(), implicitSpec.getSeed()), implicitSpec)); 
           }
       }


       throw new RuntimeException("not implemented yet " + key + " " + spec);
    }

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        // public key encoding test
        //
        byte[]              pubEnc = aKeyPair.getPublic().getEncoded();
        KeyFactory          keyFac = KeyFactory.getInstance("ECDH", "BC");
        X509EncodedKeySpec  pubX509 = new X509EncodedKeySpec(pubEnc);
        ECPublicKey         pubKey = (ECPublicKey)keyFac.generatePublic(pubX509);


        if (!pubKey.getW().equals(((ECPublicKey)aKeyPair.getPublic()).getW()))
        {
            fail("public key encoding (Q test) failed");
        }


        if (!(pubKey.getParams() instanceof ECNamedCurveSpec))
        {
            fail("public key encoding not named curve");
        }


        //

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        // public key encoding test
        //
        byte[]              pubEnc = vKey.getEncoded();
        KeyFactory          keyFac = KeyFactory.getInstance("ECDH", "BC");
        X509EncodedKeySpec  pubX509 = new X509EncodedKeySpec(pubEnc);
        ECPublicKey         pubKey = (ECPublicKey)keyFac.generatePublic(pubX509);


        if (!pubKey.getW().equals(((ECPublicKey)vKey).getW()))
        {
            fail("public key encoding (Q test) failed");
        }


        if (!(pubKey.getParams() instanceof ECNamedCurveSpec))
        {
            fail("public key encoding not named curve");
        }


        //

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        // public key encoding test
        //
        byte[]              pubEnc = aKeyPair.getPublic().getEncoded();
        KeyFactory          keyFac = KeyFactory.getInstance(algorithm, "BC");
        X509EncodedKeySpec  pubX509 = new X509EncodedKeySpec(pubEnc);
        ECPublicKey         pubKey = (ECPublicKey)keyFac.generatePublic(pubX509);


        if (!pubKey.getW().equals(((ECPublicKey)aKeyPair.getPublic()).getW()))
        {
            System.out.println(" expected " + pubKey.getW().getAffineX() + " got " + ((ECPublicKey)aKeyPair.getPublic()).getW().getAffineX());
            System.out.println(" expected " + pubKey.getW().getAffineY() + " got " + ((ECPublicKey)aKeyPair.getPublic()).getW().getAffineY());
            fail(algorithm + " public key encoding (W test) failed");
        }


        if (!pubKey.getParams().getGenerator().equals(((ECPublicKey)aKeyPair.getPublic()).getParams().getGenerator()))
        {
            fail(algorithm + " public key encoding (G test) failed");
        }


        //

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        private ECParameterSpec ecParams;
        private Method encodePoint, decodePoint;


        EC(PublicKey key) throws KeyException {
            super(key);
            ECPublicKey ecKey = (ECPublicKey)key;
            ECPoint ecPoint = ecKey.getW();
            ecParams = ecKey.getParams();
            try {
                AccessController.doPrivileged(
                    new PrivilegedExceptionAction<Void>() {
                        public Void run() throws
                            ClassNotFoundException, NoSuchMethodException

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        private Method encodePoint, decodePoint, getCurveName,
                       getECParameterSpec;


        EC(PublicKey key) throws KeyException {
            super(key);
            ECPublicKey ecKey = (ECPublicKey)key;
            ECPoint ecPoint = ecKey.getW();
            ecParams = ecKey.getParams();
            try {
                AccessController.doPrivileged(
                    new PrivilegedExceptionAction<Void>() {
                        public Void run() throws
                            ClassNotFoundException, NoSuchMethodException

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