Examples with DSAPublicKeySpec java.security.spec.DSAPublicKeySpec used on opensource projects

Example 16 with DSAPublicKeySpec

use of java.security.spec.DSAPublicKeySpec in project robovm by robovm.

the class CertPathValidatorUtilities method getNextWorkingKey.

/**
     * Return the next working key inheriting DSA parameters if necessary.
     * <p>
     * This methods inherits DSA parameters from the indexed certificate or
     * previous certificates in the certificate chain to the returned
     * <code>PublicKey</code>. The list is searched upwards, meaning the end
     * certificate is at position 0 and previous certificates are following.
     * </p>
     * <p>
     * If the indexed certificate does not contain a DSA key this method simply
     * returns the public key. If the DSA key already contains DSA parameters
     * the key is also only returned.
     * </p>
     *
     * @param certs The certification path.
     * @param index The index of the certificate which contains the public key
     *              which should be extended with DSA parameters.
     * @return The public key of the certificate in list position
     *         <code>index</code> extended with DSA parameters if applicable.
     * @throws AnnotatedException if DSA parameters cannot be inherited.
     */
protected static PublicKey getNextWorkingKey(List certs, int index) throws CertPathValidatorException {
    Certificate cert = (Certificate) certs.get(index);
    PublicKey pubKey = cert.getPublicKey();
    if (!(pubKey instanceof DSAPublicKey)) {
        return pubKey;
    }
    DSAPublicKey dsaPubKey = (DSAPublicKey) pubKey;
    if (dsaPubKey.getParams() != null) {
        return dsaPubKey;
    }
    for (int i = index + 1; i < certs.size(); i++) {
        X509Certificate parentCert = (X509Certificate) certs.get(i);
        pubKey = parentCert.getPublicKey();
        if (!(pubKey instanceof DSAPublicKey)) {
            throw new CertPathValidatorException("DSA parameters cannot be inherited from previous certificate.");
        }
        DSAPublicKey prevDSAPubKey = (DSAPublicKey) pubKey;
        if (prevDSAPubKey.getParams() == null) {
            continue;
        }
        DSAParams dsaParams = prevDSAPubKey.getParams();
        DSAPublicKeySpec dsaPubKeySpec = new DSAPublicKeySpec(dsaPubKey.getY(), dsaParams.getP(), dsaParams.getQ(), dsaParams.getG());
        try {
            KeyFactory keyFactory = KeyFactory.getInstance("DSA", BouncyCastleProvider.PROVIDER_NAME);
            return keyFactory.generatePublic(dsaPubKeySpec);
        } catch (Exception exception) {
            throw new RuntimeException(exception.getMessage());
        }
    }
    throw new CertPathValidatorException("DSA parameters cannot be inherited from previous certificate.");
}

Example 17 with DSAPublicKeySpec

use of java.security.spec.DSAPublicKeySpec in project robovm by robovm.

the class DSAKeyFactoryImpl method engineGetKeySpec.

/**
     * This method returns a specification for the supplied key.
     *
     * The specification will be returned in the form of an object of the type
     * specified by keySpec.
     *
     * @param key -
     *            either DSAPrivateKey or DSAPublicKey
     * @param keySpec -
     *            either DSAPrivateKeySpec.class or DSAPublicKeySpec.class
     *
     * @return either a DSAPrivateKeySpec or a DSAPublicKeySpec
     *
     * @throws InvalidKeySpecException
     *             if "keySpec" is not a specification for DSAPublicKey or
     *             DSAPrivateKey
     */
protected <T extends KeySpec> T engineGetKeySpec(Key key, Class<T> keySpec) throws InvalidKeySpecException {
    BigInteger p, q, g, x, y;
    if (key != null) {
        if (keySpec == null) {
            throw new NullPointerException("keySpec == null");
        }
        if (key instanceof DSAPrivateKey) {
            DSAPrivateKey privateKey = (DSAPrivateKey) key;
            if (keySpec.equals(DSAPrivateKeySpec.class)) {
                x = privateKey.getX();
                DSAParams params = privateKey.getParams();
                p = params.getP();
                q = params.getQ();
                g = params.getG();
                return (T) (new DSAPrivateKeySpec(x, p, q, g));
            }
            if (keySpec.equals(PKCS8EncodedKeySpec.class)) {
                return (T) (new PKCS8EncodedKeySpec(key.getEncoded()));
            }
            throw new InvalidKeySpecException("'keySpec' is neither DSAPrivateKeySpec nor PKCS8EncodedKeySpec");
        }
        if (key instanceof DSAPublicKey) {
            DSAPublicKey publicKey = (DSAPublicKey) key;
            if (keySpec.equals(DSAPublicKeySpec.class)) {
                y = publicKey.getY();
                DSAParams params = publicKey.getParams();
                p = params.getP();
                q = params.getQ();
                g = params.getG();
                return (T) (new DSAPublicKeySpec(y, p, q, g));
            }
            if (keySpec.equals(X509EncodedKeySpec.class)) {
                return (T) (new X509EncodedKeySpec(key.getEncoded()));
            }
            throw new InvalidKeySpecException("'keySpec' is neither DSAPublicKeySpec nor X509EncodedKeySpec");
        }
    }
    throw new InvalidKeySpecException("'key' is neither DSAPublicKey nor DSAPrivateKey");
}

Example 18 with DSAPublicKeySpec

use of java.security.spec.DSAPublicKeySpec in project robovm by robovm.

the class DSAKeyFactoryImpl method engineTranslateKey.

/**
     * The method generates a DSAPublicKey object from the provided key.
     *
     * @param
     *    key - a DSAPublicKey object or DSAPrivateKey object.
     *
     * @return
     *    object of the same type as the "key" argument
     *
     * @throws InvalidKeyException
     *     if "key" is neither DSAPublicKey nor DSAPrivateKey
     */
protected Key engineTranslateKey(Key key) throws InvalidKeyException {
    if (key != null) {
        if (key instanceof DSAPrivateKey) {
            DSAPrivateKey privateKey = (DSAPrivateKey) key;
            DSAParams params = privateKey.getParams();
            try {
                return engineGeneratePrivate(new DSAPrivateKeySpec(privateKey.getX(), params.getP(), params.getQ(), params.getG()));
            } catch (InvalidKeySpecException e) {
                // Actually this exception shouldn't be thrown
                throw new InvalidKeyException("ATTENTION: InvalidKeySpecException: " + e);
            }
        }
        if (key instanceof DSAPublicKey) {
            DSAPublicKey publicKey = (DSAPublicKey) key;
            DSAParams params = publicKey.getParams();
            try {
                return engineGeneratePublic(new DSAPublicKeySpec(publicKey.getY(), params.getP(), params.getQ(), params.getG()));
            } catch (InvalidKeySpecException e) {
                // Actually this exception shouldn't be thrown
                throw new InvalidKeyException("ATTENTION: InvalidKeySpecException: " + e);
            }
        }
    }
    throw new InvalidKeyException("'key' is neither DSAPublicKey nor DSAPrivateKey");
}

Example 19 with DSAPublicKeySpec

use of java.security.spec.DSAPublicKeySpec in project robovm by robovm.

the class KeyFactoryTest method testGeneratePrivate.

@SuppressWarnings("unchecked")
public void testGeneratePrivate() {
    KeyFactory factory = null;
    try {
        factory = KeyFactory.getInstance(TEST_KEYFACTORY_NAME);
    } catch (NoSuchAlgorithmException e) {
        fail("unexpected exception: " + e);
    }
    assertNotNull(factory);
    try {
        TestPrivateKey key = new TestPrivateKey();
        TestPrivateKeySpec keySpec = new TestPrivateKeySpec(key);
        PrivateKey privateKey = factory.generatePrivate(keySpec);
        assertNotNull(privateKey);
        assertTrue(Arrays.equals(key.getEncoded(), privateKey.getEncoded()));
    } catch (InvalidKeySpecException e) {
        fail("unexpected exception: " + e);
    }
    KeySpec[] keySpecs = { new TestPublicKeySpec(new TestPublicKey()), null, new DSAPublicKeySpec(null, null, null, null) };
    Class[] exceptions = { InvalidKeySpecException.class, NullPointerException.class, InvalidKeySpecException.class };
    for (int i = 0; i < keySpecs.length; i++) {
        KeySpec keySpec = keySpecs[i];
        exceptionThrown = false;
        String message = "generatePrivate(" + (keySpec == null ? "null" : keySpec.toString()) + ")";
        try {
            factory.generatePrivate(keySpec);
        } catch (Exception e) {
            checkException(message, e, exceptions[i]);
        } finally {
            checkException(message, null, exceptions[i]);
        }
    }
}

Example 20 with DSAPublicKeySpec

use of java.security.spec.DSAPublicKeySpec in project robovm by robovm.

the class DSAPublicKeySpecTest method testGetY.

/**
     * Test for <code>getY</code> method
     */
public final void testGetY() {
    DSAPublicKeySpec dpks = new DSAPublicKeySpec(// y
    new BigInteger("1"), // p
    new BigInteger("2"), // q
    new BigInteger("3"), // g
    new BigInteger("4"));
    assertEquals(1, dpks.getY().intValue());
}