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

Example 31 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 32 with DSAPublicKeySpec

use of java.security.spec.DSAPublicKeySpec in project Conversations by siacs.

the class OtrService method loadKey.

private KeyPair loadKey(final JSONObject keys) {
    if (keys == null) {
        return null;
    }
    synchronized (keys) {
        try {
            BigInteger x = new BigInteger(keys.getString("otr_x"), 16);
            BigInteger y = new BigInteger(keys.getString("otr_y"), 16);
            BigInteger p = new BigInteger(keys.getString("otr_p"), 16);
            BigInteger q = new BigInteger(keys.getString("otr_q"), 16);
            BigInteger g = new BigInteger(keys.getString("otr_g"), 16);
            KeyFactory keyFactory = KeyFactory.getInstance("DSA");
            DSAPublicKeySpec pubKeySpec = new DSAPublicKeySpec(y, p, q, g);
            DSAPrivateKeySpec privateKeySpec = new DSAPrivateKeySpec(x, p, q, g);
            PublicKey publicKey = keyFactory.generatePublic(pubKeySpec);
            PrivateKey privateKey = keyFactory.generatePrivate(privateKeySpec);
            return new KeyPair(publicKey, privateKey);
        } catch (JSONException e) {
            return null;
        } catch (NoSuchAlgorithmException e) {
            return null;
        } catch (InvalidKeySpecException e) {
            return null;
        }
    }
}

Example 33 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 34 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());
}

Example 35 with DSAPublicKeySpec

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

the class DSAPublicKeySpecTest method testGetG.

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