Examples of java.security.spec.ECPublicKeySpec

java.security.spec.ECPublicKeySpec
This immutable class specifies an elliptic curve public key with its associated parameters. @see KeySpec @see ECPoint @see ECParameterSpec @author Valerie Peng @version 1.4, 11/17/05 @since 1.5

            }
/*
                ecPoint = sun.security.ec.ECParameters.decodePoint(
                    Base64.decode(curElem), ecParams.getCurve());
*/
            ECPublicKeySpec spec = new ECPublicKeySpec(ecPoint, ecParams);
            return (ECPublicKey) generatePublicKey(eckf, spec);
        }

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        ECPrivateKeySpec priKey = new ECPrivateKeySpec(
            new BigInteger("876300101507107567501066130761671078357010671067781776716671676178726717"), // d
            spec);


        ECPublicKeySpec pubKey = new ECPublicKeySpec(
            ECPointUtil.decodePoint(curve, Hex.decode("025b6dc53bc61a2548ffb0f671472de6c9521a9d2d2534e65abfcbd5fe0c70")), // Q
            spec);


        Signature           sgr = Signature.getInstance("ECDSA", "BC");
        KeyFactory          f = KeyFactory.getInstance("ECDSA", "BC");

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        ECPrivateKeySpec priKeySpec = new ECPrivateKeySpec(
            new BigInteger("145642755521911534651321230007534120304391871461646461466464667494947990"), // d
            params);
        
        ECPublicKeySpec pubKeySpec = new ECPublicKeySpec(
            ECPointUtil.decodePoint(curve, Hex.decode("045894609CCECF9A92533F630DE713A958E96C97CCB8F5ABB5A688A238DEED6DC2D9D0C94EBFB7D526BA6A61764175B99CB6011E2047F9F067293F57F5")), // Q
            params);
    
        Signature   sgr = Signature.getInstance("ECDSA", "BC");
        KeyFactory  f = KeyFactory.getInstance("ECDSA", "BC");

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    private void testKeyFactory(ECPublicKey pub, ECPrivateKey priv)
        throws Exception
    {
        KeyFactory ecFact = KeyFactory.getInstance("ECDSA");


        ECPublicKeySpec  pubSpec = (ECPublicKeySpec)ecFact.getKeySpec(pub, ECPublicKeySpec.class);
        ECPrivateKeySpec  privSpec = (ECPrivateKeySpec)ecFact.getKeySpec(priv, ECPrivateKeySpec.class);


        if (!pubSpec.getW().equals(pub.getW()) || !pubSpec.getParams().getCurve().equals(pub.getParams().getCurve()))
        {
            fail("pubSpec not correct");
        }


        if (!privSpec.getS().equals(priv.getS()) || !privSpec.getParams().getCurve().equals(priv.getParams().getCurve()))

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    }


    @Override
    protected byte[] calculateK() throws Exception {
        KeyFactory myKeyFac = SecurityUtils.getKeyFactory("EC");
        ECPublicKeySpec keySpec = new ECPublicKeySpec(f, params);
        PublicKey yourPubKey = myKeyFac.generatePublic(keySpec);
        myKeyAgree.doPhase(yourPubKey, true);
        return stripLeadingZeroes(myKeyAgree.generateSecret());
    }

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            throw new InvalidKeySpecException("Curve name does not match expected: " + curveName + " vs "
                    + expectedCurve);
        }
        ECPoint w = ECCurves.decodeECPoint(getStringAsBytes(), spec.getCurve());
        KeyFactory keyFactory = SecurityUtils.getKeyFactory("EC");
        return keyFactory.generatePublic(new ECPublicKeySpec(w, spec));
    }

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        if (group == null) {
            throw new InvalidKeySpecException("Couldn't decode EC group");
        }


        KeyFactory keyFactory = SecurityUtils.getKeyFactory("EC");
        PublicKey pubKey = keyFactory.generatePublic(new ECPublicKeySpec(group, spec));
        PrivateKey privKey = keyFactory.generatePrivate(new ECPrivateKeySpec(exponent, spec));
        return new KeyPair(pubKey, privKey);
    }

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        ECPrivateKeySpec priKey = new ECPrivateKeySpec(
            new BigInteger("876300101507107567501066130761671078357010671067781776716671676178726717"), // d
            spec);


        ECPublicKeySpec pubKey = new ECPublicKeySpec(
            ECPointUtil.decodePoint(curve, Hex.decode("025b6dc53bc61a2548ffb0f671472de6c9521a9d2d2534e65abfcbd5fe0c70")), // Q
            spec);


        Signature           sgr = Signature.getInstance("ECDSA", "BC");
        KeyFactory          f = KeyFactory.getInstance("ECDSA", "BC");

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        ECPrivateKeySpec priKeySpec = new ECPrivateKeySpec(
            new BigInteger("145642755521911534651321230007534120304391871461646461466464667494947990"), // d
            params);
        
        ECPublicKeySpec pubKeySpec = new ECPublicKeySpec(
            ECPointUtil.decodePoint(curve, Hex.decode("045894609CCECF9A92533F630DE713A958E96C97CCB8F5ABB5A688A238DEED6DC2D9D0C94EBFB7D526BA6A61764175B99CB6011E2047F9F067293F57F5")), // Q
            params);
    
        Signature   sgr = Signature.getInstance("ECDSA", "BC");
        KeyFactory  f = KeyFactory.getInstance("ECDSA", "BC");

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    private void testKeyFactory(ECPublicKey pub, ECPrivateKey priv)
        throws Exception
    {
        KeyFactory ecFact = KeyFactory.getInstance("ECDSA");


        ECPublicKeySpec  pubSpec = (ECPublicKeySpec)ecFact.getKeySpec(pub, ECPublicKeySpec.class);
        ECPrivateKeySpec  privSpec = (ECPrivateKeySpec)ecFact.getKeySpec(priv, ECPrivateKeySpec.class);


        if (!pubSpec.getW().equals(pub.getW()) || !pubSpec.getParams().getCurve().equals(pub.getParams().getCurve()))
        {
            fail("pubSpec not correct");
        }


        if (!privSpec.getS().equals(priv.getS()) || !privSpec.getParams().getCurve().equals(priv.getParams().getCurve()))

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