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/*

 * @test

 * @bug 6405536

 * @summary Test the P11ECKeyFactory

 * @author Andreas Sterbenz

 * @modules jdk.crypto.cryptoki

 * @run main/othervm TestKeyFactory

 * @run main/othervm TestKeyFactory sm

 */

import java.security.Key;

import java.security.KeyFactory;

import java.security.KeyPair;

import java.security.KeyPairGenerator;

import java.security.PrivateKey;

import java.security.Provider;

import java.security.PublicKey;

import java.security.spec.ECPrivateKeySpec;

import java.security.spec.ECPublicKeySpec;

import java.security.spec.KeySpec;

import java.security.spec.PKCS8EncodedKeySpec;

import java.security.spec.X509EncodedKeySpec;

import java.util.Arrays;

public class TestKeyFactory extends PKCS11Test {

    /**

     * Test that key1 (reference key) and key2 (key to be tested) are

     * equivalent

     */

    private static void testKey(Key key1, Key key2) throws Exception {

        if (key2.getAlgorithm().equals("EC") == false) {

            throw new Exception("Algorithm not EC");

        }

        if (key1 instanceof PublicKey) {

            if (key2.getFormat().equals("X.509") == false) {

                throw new Exception("Format not X.509");

            }

        } else if (key1 instanceof PrivateKey) {

            if (key2.getFormat().equals("PKCS#8") == false) {

                throw new Exception("Format not PKCS#8");

            }

        }

        if (key1.equals(key2) == false) {

            System.out.println("key1: " + key1);

            System.out.println("key2: " + key2);

            System.out.println("enc1: " + toString(key1.getEncoded()));

            System.out.println("enc2: " + toString(key2.getEncoded()));

            throw new Exception("Keys not equal");

        }

        if (Arrays.equals(key1.getEncoded(), key2.getEncoded()) == false) {

            throw new Exception("Encodings not equal");

        }

    }

    private static void testPublic(KeyFactory kf, PublicKey key) throws Exception {

        System.out.println("Testing public key...");

        PublicKey key2 = (PublicKey)kf.translateKey(key);

        KeySpec keySpec = kf.getKeySpec(key, ECPublicKeySpec.class);

        PublicKey key3 = kf.generatePublic(keySpec);

        KeySpec x509Spec = kf.getKeySpec(key, X509EncodedKeySpec.class);

        PublicKey key4 = kf.generatePublic(x509Spec);

        KeySpec x509Spec2 = new X509EncodedKeySpec(key.getEncoded());

        PublicKey key5 = kf.generatePublic(x509Spec2);

        testKey(key, key);

        testKey(key, key2);

        testKey(key, key3);

        testKey(key, key4);

        testKey(key, key5);

    }

    private static void testPrivate(KeyFactory kf, PrivateKey key) throws Exception {

        System.out.println("Testing private key...");

        PrivateKey key2 = (PrivateKey)kf.translateKey(key);

        KeySpec keySpec = kf.getKeySpec(key, ECPrivateKeySpec.class);

        PrivateKey key3 = kf.generatePrivate(keySpec);

        KeySpec pkcs8Spec = kf.getKeySpec(key, PKCS8EncodedKeySpec.class);

        PrivateKey key4 = kf.generatePrivate(pkcs8Spec);

        KeySpec pkcs8Spec2 = new PKCS8EncodedKeySpec(key.getEncoded());

        PrivateKey key5 = kf.generatePrivate(pkcs8Spec2);

        testKey(key, key);

        testKey(key, key2);

        testKey(key, key3);

        testKey(key, key4);

        testKey(key, key5);

    }

    private static void test(KeyFactory kf, Key key) throws Exception {

        if (key.getAlgorithm().equals("EC") == false) {

            throw new Exception("Not an EC key");

        }

        if (key instanceof PublicKey) {

            testPublic(kf, (PublicKey)key);

        } else if (key instanceof PrivateKey) {

            testPrivate(kf, (PrivateKey)key);

        }

    }

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

        main(new TestKeyFactory(), args);

    }

    @Override

    public void main(Provider p) throws Exception {

        if (p.getService("KeyFactory", "EC") == null) {

            System.out.println("Provider does not support EC, skipping");

            return;

        }

        int[] keyLengths = {192, 163, 409, 521};

        int len = 0;

        if (getNSSECC() == ECCState.Basic) {

            System.out.println("NSS Basic ECC only. Skipping 192, 163, & 409");

            len = 3;

        }

        KeyFactory kf = KeyFactory.getInstance("EC", p);

        for (; keyLengths.length > len ; len++) {

            System.out.println("Length "+keyLengths[len]);

            KeyPairGenerator kpg = KeyPairGenerator.getInstance("EC", p);

            kpg.initialize(keyLengths[len]);

            KeyPair kp = kpg.generateKeyPair();

            test(kf, kp.getPrivate());

            test(kf, kp.getPublic());

        }

    }

}