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 * You should have received a copy of the GNU General Public License version

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 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 */

 /*

 * @test

 * @summary KeyAgreement Test with all supported algorithms from JCE.

 *          Arguments order <KeyExchangeAlgorithm> <KeyGenAlgorithm> <Provider>

 *          It removes com/sun/crypto/provider/KeyAgreement/DHGenSecretKey.java

 *          as the same functionality for DiffieHellman is covered along with

 *          this test file was covered before with JDK-4936763.

 * @run main/othervm -Djdk.crypto.KeyAgreement.legacyKDF=true KeyAgreementTest

 *          DiffieHellman DH SunJCE

 * @run main KeyAgreementTest ECDH EC SunEC

 * @run main KeyAgreementTest XDH XDH SunEC

 */

import java.security.KeyPair;

import java.security.KeyPairGenerator;

import java.security.spec.NamedParameterSpec;

import java.security.spec.AlgorithmParameterSpec;

import java.security.spec.ECGenParameterSpec;

import java.util.ArrayList;

import java.util.Arrays;

import java.util.List;

import javax.crypto.KeyAgreement;

import javax.crypto.spec.DHGenParameterSpec;

public class KeyAgreementTest {

    public static void main(String[] args) throws Exception {

        String kaAlgo = args[0];

        String kpgAlgo = args[1];

        String provider = args[2];

        AlgoSpec aSpec = AlgoSpec.valueOf(AlgoSpec.class, kaAlgo);

        List<AlgorithmParameterSpec> specs = aSpec.getAlgorithmParameterSpecs();

        for (AlgorithmParameterSpec spec : specs) {

            testKeyAgreement(provider, kaAlgo, kpgAlgo, spec);

        }

    }

    /**

     * Generate AlgorithmParameterSpec using all possible supported curve for

     * KeyExchangeAlgorithm.

     */

    private enum AlgoSpec {

        // EC curve supported for KeyGeneration can found between intersection

        // of curves define in

        // "java.base/share/classes/sun/security/util/CurveDB.java"

        // and

        // "jdk.crypto.ec/share/native/libsunec/impl/ecdecode.c"

        ECDH(

                // SEC2 prime curves

                "secp112r1", "secp112r2", "secp128r1", "secp128r2", "secp160k1",

                "secp160r1", "secp192k1", "secp192r1", "secp224k1", "secp224r1",

                // ANSI X9.62 prime curves

                "X9.62 prime192v2", "X9.62 prime192v3", "X9.62 prime239v1",

                "X9.62 prime239v2", "X9.62 prime239v3",

                // SEC2 binary curves

                "sect113r1", "sect113r2", "sect131r1", "sect131r2", "sect163k1",

                "sect163r1", "sect163r2", "sect193r1", "sect193r2", "sect233k1",

                "sect233r1", "sect239k1", "sect283k1", "sect283r1", "sect409k1",

                "sect409r1", "sect571k1", "sect571r1",

                // ANSI X9.62 binary curves

                "X9.62 c2tnb191v1", "X9.62 c2tnb191v2", "X9.62 c2tnb191v3",

                "X9.62 c2tnb239v1", "X9.62 c2tnb239v2", "X9.62 c2tnb239v3",

                "X9.62 c2tnb359v1", "X9.62 c2tnb431r1"

        ),

        // There is no curve for DiffieHellman

        DiffieHellman(new String[]{});

        private final List<AlgorithmParameterSpec> specs = new ArrayList<>();

        private AlgoSpec(String... curves) {

            // Generate AlgorithmParameterSpec for each KeyExchangeAlgorithm

            for (String crv : curves) {

                switch (this.name()) {

                    case "ECDH":

                        specs.add(new ECGenParameterSpec(crv));

                        break;

                    case "XDH":

                        specs.add(new NamedParameterSpec(crv));

                        break;

                    case "DiffieHellman":

                        specs.add(new DHGenParameterSpec(512, 64));

                        break;

                    default:

                        throw new RuntimeException("Invalid Algo name "

                                + this.name());

                }

            }

        }

        public List<AlgorithmParameterSpec> getAlgorithmParameterSpecs() {

            return this.specs;

        }

    }

    /**

     * Perform KeyAgreement operation using native as well as JCE provider.

     */

    private static void testKeyAgreement(String provider, String kaAlgo,

            String kpgAlgo, AlgorithmParameterSpec spec) throws Exception {

        KeyPairGenerator kpg = KeyPairGenerator.getInstance(kpgAlgo, provider);

        kpg.initialize(spec);

        KeyPair kp1 = kpg.generateKeyPair();

        KeyPair kp2 = kpg.generateKeyPair();

        // Uses KeyAgreement based on Provider search order.

        KeyAgreement ka1 = KeyAgreement.getInstance(kaAlgo);

        ka1.init(kp1.getPrivate());

        ka1.doPhase(kp2.getPublic(), true);

        byte[] secret1 = ka1.generateSecret();

        // Uses SunJCE provider

        KeyAgreement ka2 = KeyAgreement.getInstance(kaAlgo, provider);

        ka2.init(kp2.getPrivate());

        ka2.doPhase(kp1.getPublic(), true);

        // Keeping the legacy generateSecret method for DiffieHellman as it was

        // defined in removed Test file from JDK-4936763,

        // com/sun/crypto/provider/KeyAgreement/DHGenSecretKey.java.

        byte[] secret2 = "DiffieHellman".equals(kaAlgo)

                ? ka2.generateSecret("AES").getEncoded() : ka2.generateSecret();

        // With related keypairs, each provider should generate same

        // KeyAgreement secret.

        if (!Arrays.equals(secret1, secret2)) {

            throw new Exception("KeyAgreement secret mismatch.");

        }

        // ensure that a new secret cannot be produced before the next doPhase

        try {

            ka2.generateSecret();

            throw new RuntimeException("state not reset");

        } catch (IllegalStateException ex) {

            // this is expected

        }

        // calling doPhase and then generateSecret should succeed

        ka2.doPhase(kp1.getPublic(), true);

        ka2.generateSecret();

    }

}