Examples with DSAPublicKey java.security.interfaces.DSAPublicKey used on opensource projects

Example 6 with DSAPublicKey

use of java.security.interfaces.DSAPublicKey in project robovm by robovm.

the class DSAPublicKeyTest method test_getY.

/**
     * java.security.interfaces.DSAPublicKey
     * #getY()
     * test covers following use cases
     *   Case 1: check with predefined p, q, g, x
     *   Case 2: check with random p, q, g, x. It takes some time (up to
     *           minute)
     */
public void test_getY() throws Exception {
    KeyPairGenerator keyGen = null;
    KeyPair keys = null;
    DSAPrivateKey priv = null;
    DSAPublicKey publ = null;
    // Case 1: check with predefined p, q, g, x
    keyGen = KeyPairGenerator.getInstance("DSA");
    keyGen.initialize(new DSAParameterSpec(Util.P, Util.Q, Util.G), new SecureRandom(new MySecureRandomSpi(), null) {
    });
    keys = keyGen.generateKeyPair();
    priv = (DSAPrivateKey) keys.getPrivate();
    publ = (DSAPublicKey) keys.getPublic();
    assertNotNull("Invalid Y value", publ.getY());
    // Case 2: check with random p, q, g, x. It takes some time (up to
    // minute)
    keyGen = KeyPairGenerator.getInstance("DSA");
    keys = keyGen.generateKeyPair();
    priv = (DSAPrivateKey) keys.getPrivate();
    publ = (DSAPublicKey) keys.getPublic();
    assertNotNull("Invalid Y value", publ.getY());
}

Example 7 with DSAPublicKey

use of java.security.interfaces.DSAPublicKey in project robovm by robovm.

the class KeyPairGenerator4Test method test_initializeLjava_security_spec_AlgorithmParameterSpec.

/**
     * java.security.KeyPairGenerator#initialize(java.security.spec.AlgorithmParameterSpec)
     */
public void test_initializeLjava_security_spec_AlgorithmParameterSpec() throws Exception {
    // create DSAParams
    KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance("DSA");
    keyPairGenerator.initialize(1024);
    DSAPublicKey key = (DSAPublicKey) keyPairGenerator.genKeyPair().getPublic();
    DSAParams params = key.getParams();
    KeyPairGenerator keyPair = KeyPairGenerator.getInstance("DSA");
    keyPair.initialize(new DSAParameterSpec(params.getP(), params.getQ(), params.getG()));
}

Example 8 with DSAPublicKey

use of java.security.interfaces.DSAPublicKey in project robovm by robovm.

the class KeyPairGenerator4Test method test_initializeLjava_security_spec_AlgorithmParameterSpecLjava_security_SecureRandom.

/**
     * java.security.KeyPairGenerator#initialize(java.security.spec.AlgorithmParameterSpec,
     *        java.security.SecureRandom)
     */
public void test_initializeLjava_security_spec_AlgorithmParameterSpecLjava_security_SecureRandom() throws Exception {
    // create DSAParams
    KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance("DSA");
    keyPairGenerator.initialize(1024);
    DSAPublicKey key = (DSAPublicKey) keyPairGenerator.genKeyPair().getPublic();
    DSAParams params = key.getParams();
    KeyPairGenerator keyPair = KeyPairGenerator.getInstance("DSA");
    keyPair.initialize(new DSAParameterSpec(params.getP(), params.getQ(), params.getG()), new SecureRandom());
}

Example 9 with DSAPublicKey

use of java.security.interfaces.DSAPublicKey in project Conversations by siacs.

the class Conversation method getOtrFingerprint.

public synchronized String getOtrFingerprint() {
    if (this.otrFingerprint == null) {
        try {
            if (getOtrSession() == null || getOtrSession().getSessionStatus() != SessionStatus.ENCRYPTED) {
                return null;
            }
            DSAPublicKey remotePubKey = (DSAPublicKey) getOtrSession().getRemotePublicKey();
            this.otrFingerprint = getAccount().getOtrService().getFingerprint(remotePubKey).toLowerCase(Locale.US);
        } catch (final OtrCryptoException | UnsupportedOperationException ignored) {
            return null;
        }
    }
    return this.otrFingerprint;
}

Example 10 with DSAPublicKey

use of java.security.interfaces.DSAPublicKey in project carat by amplab.

the class SamplingLibrary method getSignatures.

public static List<String> getSignatures(PackageInfo pak) {
    List<String> sigList = new LinkedList<String>();
    String[] pmInfos = pak.requestedPermissions;
    if (pmInfos != null) {
        byte[] bytes = getPermissionBytes(pmInfos);
        String hexB = convertToHex(bytes);
        sigList.add(hexB);
    }
    Signature[] sigs = pak.signatures;
    for (Signature s : sigs) {
        MessageDigest md = null;
        try {
            md = MessageDigest.getInstance("SHA-1");
            md.update(s.toByteArray());
            byte[] dig = md.digest();
            // Add SHA-1
            sigList.add(convertToHex(dig));
            CertificateFactory fac = CertificateFactory.getInstance("X.509");
            if (fac == null)
                continue;
            X509Certificate cert = (X509Certificate) fac.generateCertificate(new ByteArrayInputStream(s.toByteArray()));
            if (cert == null)
                continue;
            PublicKey pkPublic = cert.getPublicKey();
            if (pkPublic == null)
                continue;
            String al = pkPublic.getAlgorithm();
            if (al.equals("RSA")) {
                md = MessageDigest.getInstance("SHA-256");
                RSAPublicKey rsa = (RSAPublicKey) pkPublic;
                byte[] data = rsa.getModulus().toByteArray();
                if (data[0] == 0) {
                    byte[] copy = new byte[data.length - 1];
                    System.arraycopy(data, 1, copy, 0, data.length - 1);
                    md.update(copy);
                } else
                    md.update(data);
                dig = md.digest();
                // Add SHA-256 of modulus
                sigList.add(convertToHex(dig));
            } else if (al.equals("DSA")) {
                DSAPublicKey dsa = (DSAPublicKey) pkPublic;
                md = MessageDigest.getInstance("SHA-256");
                byte[] data = dsa.getY().toByteArray();
                if (data[0] == 0) {
                    byte[] copy = new byte[data.length - 1];
                    System.arraycopy(data, 1, copy, 0, data.length - 1);
                    md.update(copy);
                } else
                    md.update(data);
                dig = md.digest();
                // Add SHA-256 of public key (DSA)
                sigList.add(convertToHex(dig));
            } else {
                Log.e("SamplingLibrary", "Weird algorithm: " + al + " for " + pak.packageName);
            }
        } catch (NoSuchAlgorithmException e) {
        // Do nothing
        } catch (CertificateException e) {
        // Do nothing
        }
    }
    return sigList;
}