Example usage for java.security.spec X509EncodedKeySpec X509EncodedKeySpec

Introduction

In this page you can find the example usage for java.security.spec X509EncodedKeySpec X509EncodedKeySpec.

Prototype

public X509EncodedKeySpec(byte[] encodedKey) 

Source Link

Document

Creates a new X509EncodedKeySpec with the given encoded key.

Usage

From source file:jef.tools.security.EncrypterUtil.java

/**
 * x509/*w ww . j  a  v  a 2s  .  c  o  m*/
 * 
 * @param f
 * @param algom
 *            ? getSupportedAlgorithmName (AlgorithmType.KeyFactory)
 * @param isPublic
 *            true?false??
 * @return
 */
public static Key loadX509Key(File f, String algom, boolean isPublic) {
    try {
        byte[] keyData = IOUtils.toByteArray(f);
        X509EncodedKeySpec keySpec = new X509EncodedKeySpec(keyData);
        KeyFactory keyFactory = KeyFactory.getInstance(algom);
        Key result = (isPublic) ? keyFactory.generatePublic(keySpec) : keyFactory.generatePrivate(keySpec);
        return result;
    } catch (IOException e) {
        throw new RuntimeException(e);
    } catch (GeneralSecurityException e) {
        throw new RuntimeException(e);
    }
}

---

From source file:com.wso2telco.gsma.authenticators.OpCoCompositeAuthenticator.java

/**
 * Read public key from file.//w  w  w  .  j a  v a2s .com
 *
 * @param fileName the file name
 * @return the public key
 * @throws AuthenticationFailedException the authentication failed exception
 */
private PublicKey readPublicKeyFromFile(String fileName) throws AuthenticationFailedException {
    try {
        String publicK = readStringKey(fileName);
        byte[] keyBytes = Base64.decodeBase64(publicK.getBytes());
        ;
        X509EncodedKeySpec spec = new X509EncodedKeySpec(keyBytes);
        KeyFactory keyFactory = KeyFactory.getInstance("RSA");
        return keyFactory.generatePublic(spec);
    } catch (Exception e) {
        throw new AuthenticationFailedException(
                "Authentication Failed since reading public key from file failed.");
    }
}

---

From source file:com.torresbueno.RSAEncryptionDecryptionUtil.java

/**
 * Get a public key object from a string.
 * @param publicKey - A Base64 encoded string with a X509 encoded key spec.
 * @return a standard public key object.
 * @throws NoSuchAlgorithmException/*from  w w w  . j a va2s. co m*/
 * @throws InvalidKeySpecException
 */
public PublicKey getPublicKeyFromString(String publicKey)
        throws NoSuchAlgorithmException, InvalidKeySpecException, IOException {
    byte[] encodedPb = Base64.decodeBase64(publicKey);
    X509EncodedKeySpec keySpecPb = new X509EncodedKeySpec(encodedPb);
    return getKeyFactoryInstance().generatePublic(keySpecPb);
}

---

From source file:org.openhab.binding.loxone.internal.core.LxWsSecurityToken.java

private Cipher getRsaCipher(String key) {
    try {//  ww  w. j a  va2s  . co  m
        KeyFactory keyFactory = KeyFactory.getInstance("RSA");
        String keyString = key.replace("-----BEGIN CERTIFICATE-----", "").replace("-----END CERTIFICATE-----",
                "");
        byte[] keyData = Base64.getDecoder().decode(keyString);
        X509EncodedKeySpec keySpec = new X509EncodedKeySpec(keyData);
        PublicKey publicKey = keyFactory.generatePublic(keySpec);
        logger.debug("[{}] Miniserver public key: {}", debugId, publicKey);
        Cipher cipher = Cipher.getInstance("RSA/ECB/PKCS1Padding");
        cipher.init(Cipher.PUBLIC_KEY, publicKey);
        logger.debug("[{}] Initialized RSA public key cipher", debugId);
        return cipher;
    } catch (InvalidKeyException | NoSuchAlgorithmException | NoSuchPaddingException
            | InvalidKeySpecException e) {
        setError(LxOfflineReason.INTERNAL_ERROR, "Exception enabling RSA cipher: " + e.getMessage());
        return null;
    }
}

---

From source file:net.sourceforge.msscodefactory.cfasterisk.v2_4.CFAsteriskSMWar.CFAsteriskSMWarAddDeviceHtml.java

/**
 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
 *///w w w.  j a va  2s  . c  om
protected void doPost(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    final String S_ProcName = "doPost";

    ICFAsteriskSchemaObj schemaObj;
    HttpSession sess = request.getSession(false);
    if (sess == null) {
        sess = request.getSession(true);
        schemaObj = new CFAsteriskSchemaPooledObj();
        sess.setAttribute("SchemaObj", schemaObj);
    } else {
        schemaObj = (ICFAsteriskSchemaObj) sess.getAttribute("SchemaObj");
        if (schemaObj == null) {
            response.sendRedirect("CFAsteriskSMWarLoginHtml");
            return;
        }
    }

    CFSecurityAuthorization auth = schemaObj.getAuthorization();
    if (auth == null) {
        response.sendRedirect("CFAsteriskSMWarLoginHtml");
        return;
    }

    ICFSecuritySecUserObj secUser = null;
    ICFSecurityClusterObj secCluster = null;
    String clusterDescription = "";

    ICFAsteriskSchema dbSchema = null;
    try {
        dbSchema = (ICFAsteriskSchema) CFAsteriskSchemaPool.getSchemaPool().getInstance();
        schemaObj.setBackingStore(dbSchema);
        schemaObj.beginTransaction();

        secUser = schemaObj.getSecUserTableObj().readSecUserByIdIdx(auth.getSecUserId());

        secCluster = schemaObj.getClusterTableObj().readClusterByIdIdx(auth.getSecClusterId());
        if (secCluster == null) {
            throw CFLib.getDefaultExceptionFactory().newNullArgumentException(getClass(), S_ProcName, 0,
                    "secCluster");
        }
        clusterDescription = secCluster.getRequiredDescription();

        String deviceName = request.getParameter("DeviceName");
        if ((deviceName == null) || (deviceName.length() <= 0)) {
            response.setContentType("text/html");
            PrintWriter out = response.getWriter();
            out.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01//EN\">");
            out.println("<HTML>");
            out.println("<BODY>");
            out.println("<form method=\"post\" formaction=\"CFAsteriskSMWarAddDeviceHtml\">");
            out.println("<H1 style=\"text-align:center\">" + clusterDescription + " Security Manager</H1>");
            out.println("<H2 style=\"text-align:center\">ERROR</H2>");
            out.println("<p style=\"text-align:center\">Device Name must be specified.");
            out.println("<H2 style=\"text-align:center\">Add new device for "
                    + secUser.getRequiredEMailAddress() + "</H2>");
            out.println("<p>");
            out.println("<table style=\"width:90%\">");
            out.println(
                    "<tr><th style=\"text-align:left\">Device Name:</th><td><input type=\"text\" name=\"DeviceName\"/></td></tr>");
            out.println(
                    "<tr><th style=\"text-align:left\">Public Key:</th><td><textarea name=\"PublicKey\" cols=\"60\" rows=\"10\"></textarea></td></tr>");
            out.println("</table>");
            out.println(
                    "<p style=\"text-align:center\"><button type=\"submit\" name=\"Ok\"\">Add Device</button>&nbsp;&nbsp;&nbsp;&nbsp;<button type=\"button\" name=\"Cancel\"\" onclick=\"window.location.href='CFAsteriskSMWarSecurityMainHtml'\">Cancel</button>");
            out.println("</form>");
            out.println("</BODY>");
            out.println("</HTML>");
            return;
        }

        ICFSecuritySecDeviceObj secDev = schemaObj.getSecDeviceTableObj()
                .readSecDeviceByIdIdx(secUser.getRequiredSecUserId(), deviceName);
        if (secDev != null) {
            response.setContentType("text/html");
            PrintWriter out = response.getWriter();
            out.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01//EN\">");
            out.println("<HTML>");
            out.println("<BODY>");
            out.println("<form method=\"post\" formaction=\"CFAsteriskSMWarAddDeviceHtml\">");
            out.println("<H1 style=\"text-align:center\">" + clusterDescription + " Security Manager</H1>");
            out.println("<H2 style=\"text-align:center\">ERROR</H2>");
            out.println("<p style=\"text-align:center\">Device Name \"" + deviceName + "\" already in use.");
            out.println("<H2 style=\"text-align:center\">Add new device for "
                    + secUser.getRequiredEMailAddress() + "</H2>");
            out.println("<p>");
            out.println("<table style=\"width:90%\">");
            out.println(
                    "<tr><th style=\"text-align:left\">Device Name:</th><td><input type=\"text\" name=\"DeviceName\"/></td></tr>");
            out.println(
                    "<tr><th style=\"text-align:left\">Public Key:</th><td><textarea name=\"PublicKey\" cols=\"60\" rows=\"10\"></textarea></td></tr>");
            out.println("</table>");
            out.println(
                    "<p style=\"text-align:center\"><button type=\"submit\" name=\"Ok\"\">Add Device</button>&nbsp;&nbsp;&nbsp;&nbsp;<button type=\"button\" name=\"Cancel\"\" onclick=\"window.location.href='CFAsteriskSMWarSecurityMainHtml'\">Cancel</button>");
            out.println("</form>");
            out.println("</BODY>");
            out.println("</HTML>");
            return;
        }

        String publicKey = request.getParameter("PublicKey");
        if ((publicKey == null) || (publicKey.length() <= 0)) {
            response.setContentType("text/html");
            PrintWriter out = response.getWriter();
            out.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01//EN\">");
            out.println("<HTML>");
            out.println("<BODY>");
            out.println("<form method=\"post\" formaction=\"CFAsteriskSMWarAddDeviceHtml\">");
            out.println("<H1 style=\"text-align:center\">" + clusterDescription + " Security Manager</H1>");
            out.println("<p style=\"text-align:center\">Public Key must be specified.");
            out.println("<H2 style=\"text-align:center\">Add new device for "
                    + secUser.getRequiredEMailAddress() + "</H2>");
            out.println("<p>");
            out.println("<table style=\"width:90%\">");
            out.println(
                    "<tr><th style=\"text-align:left\">Device Name:</th><td><input type=\"text\" name=\"DeviceName\"/></td></tr>");
            out.println(
                    "<tr><th style=\"text-align:left\">Public Key:</th><td><textarea name=\"PublicKey\" cols=\"60\" rows=\"10\"></textarea></td></tr>");
            out.println("</table>");
            out.println(
                    "<p style=\"text-align:center\"><button type=\"submit\" name=\"Ok\"\">Add Device</button>&nbsp;&nbsp;&nbsp;&nbsp;<button type=\"button\" name=\"Cancel\"\" onclick=\"window.location.href='CFAsteriskSMWarSecurityMainHtml'\">Cancel</button>");
            out.println("</form>");
            out.println("</BODY>");
            out.println("</HTML>");
            return;
        }

        byte wrapped[] = Base64.decodeBase64(publicKey);

        X509EncodedKeySpec x509KeySpec = new X509EncodedKeySpec(wrapped);
        KeyFactory kf = KeyFactory.getInstance("RSA");
        if (kf == null) {
            throw CFLib.getDefaultExceptionFactory().newNullArgumentException(getClass(), S_ProcName, 0, "kf");
        }

        PublicKey decodedPublicKey = kf.generatePublic(x509KeySpec);
        if (decodedPublicKey == null) {
            response.setContentType("text/html");
            PrintWriter out = response.getWriter();
            out.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01//EN\">");
            out.println("<HTML>");
            out.println("<BODY>");
            out.println("<form method=\"post\" formaction=\"CFAsteriskSMWarAddDeviceHtml\">");
            out.println("<H1 style=\"text-align:center\">" + clusterDescription + " Security Manager</H1>");
            out.println("<p style=\"text-align:center\">Public Key must be a valid RSA 2048 Key.");
            out.println("<H2 style=\"text-align:center\">Add new device for "
                    + secUser.getRequiredEMailAddress() + "</H2>");
            out.println("<p>");
            out.println("<table style=\"width:90%\">");
            out.println(
                    "<tr><th style=\"text-align:left\">Device Name:</th><td><input type=\"text\" name=\"DeviceName\"/></td></tr>");
            out.println(
                    "<tr><th style=\"text-align:left\">Public Key:</th><td><textarea name=\"PublicKey\" cols=\"60\" rows=\"10\"></textarea></td></tr>");
            out.println("</table>");
            out.println(
                    "<p style=\"text-align:center\"><button type=\"submit\" name=\"Ok\"\">Add Device</button>&nbsp;&nbsp;&nbsp;&nbsp;<button type=\"button\" name=\"Cancel\"\" onclick=\"window.location.href='CFAsteriskSMWarSecurityMainHtml'\">Cancel</button>");
            out.println("</form>");
            out.println("</BODY>");
            out.println("</HTML>");
            return;
        }

        ICFSecurityClusterObj systemCluster = schemaObj.getClusterTableObj()
                .readClusterByUDomainNameIdx("system");
        ICFSecurityTenantObj systemTenant = schemaObj.getTenantTableObj()
                .readTenantByUNameIdx(systemCluster.getRequiredId(), "system");
        ICFSecuritySecUserObj systemUser = schemaObj.getSecUserTableObj().readSecUserByULoginIdx("system");
        ICFSecuritySecSessionObj systemSession = schemaObj.getSecSessionTableObj().newInstance();
        ICFSecuritySecSessionEditObj editSystemSession = (ICFSecuritySecSessionEditObj) systemSession
                .beginEdit();
        editSystemSession.setRequiredContainerSecUser(systemUser);
        editSystemSession.setRequiredStart(Calendar.getInstance());
        systemSession = editSystemSession.create();
        editSystemSession.endEdit();

        CFSecurityAuthorization secAuth = new CFSecurityAuthorization();
        secAuth.setSecCluster(systemCluster);
        secAuth.setSecTenant(systemTenant);
        secAuth.setSecSession(systemSession);
        schemaObj.setAuthorization(secAuth);

        secDev = schemaObj.getSecDeviceTableObj().newInstance();
        ICFSecuritySecDeviceEditObj editDev = secDev.beginEdit();
        editDev.setRequiredContainerSecUser(secUser);
        editDev.setRequiredDevName(deviceName);
        editDev.setOptionalPubKey(publicKey);
        secDev = editDev.create();
        editDev.endEdit();

        if (null == secUser.getOptionalLookupDefDev()) {
            ICFSecuritySecUserEditObj editSecUser = secUser.beginEdit();
            editSecUser.setOptionalLookupDefDev(secDev);
            editSecUser.update();
            editSecUser.endEdit();
        }

        editSystemSession = (ICFSecuritySecSessionEditObj) systemSession.beginEdit();
        editSystemSession.setOptionalFinish(Calendar.getInstance());
        editSystemSession.update();
        editSystemSession.endEdit();

        schemaObj.commit();

        schemaObj.setAuthorization(auth);

        response.sendRedirect("CFAsteriskSMWarSecurityMainHtml");

    } catch (InvalidKeySpecException e) {
        response.setContentType("text/html");
        PrintWriter out = response.getWriter();
        out.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01//EN\">");
        out.println("<HTML>");
        out.println("<BODY>");
        out.println("<form method=\"post\" formaction=\"CFAsteriskSMWarAddDeviceHtml\">");
        out.println("<H1 style=\"text-align:center\">" + clusterDescription + " Security Manager</H1>");
        out.println("<p style=\"text-align:center\">Public Key must be a valid RSA 2048 Key.");
        out.println("<H2 style=\"text-align:center\">Add new device for " + secUser.getRequiredEMailAddress()
                + "</H2>");
        out.println("<p>");
        out.println("<table style=\"width:90%\">");
        out.println(
                "<tr><th style=\"text-align:left\">Device Name:</th><td><input type=\"text\" name=\"DeviceName\"/></td></tr>");
        out.println(
                "<tr><th style=\"text-align:left\">Public Key:</th><td><textarea name=\"PublicKey\" cols=\"60\" rows=\"10\"></textarea></td></tr>");
        out.println("</table>");
        out.println(
                "<p style=\"text-align:center\"><button type=\"submit\" name=\"Ok\"\">Add Device</button>&nbsp;&nbsp;&nbsp;&nbsp;<button type=\"button\" name=\"Cancel\"\" onclick=\"window.location.href='CFAsteriskSMWarSecurityMainHtml'\">Cancel</button>");
        out.println("</form>");
        out.println("</BODY>");
        out.println("</HTML>");
    } catch (NoSuchAlgorithmException e) {
        throw CFLib.getDefaultExceptionFactory().newRuntimeException(getClass(), S_ProcName,
                "Caught NoSuchAlgorithmException -- " + e.getMessage(), e);
    } catch (RuntimeException e) {
        throw CFLib.getDefaultExceptionFactory().newRuntimeException(getClass(), S_ProcName,
                "Caught RuntimeException -- " + e.getMessage(), e);
    } finally {
        schemaObj.setAuthorization(auth);
        if (dbSchema != null) {
            try {
                if (schemaObj.isTransactionOpen()) {
                    schemaObj.rollback();
                }
            } catch (RuntimeException e) {
            }
            schemaObj.setBackingStore(null);
            CFAsteriskSchemaPool.getSchemaPool().releaseInstance(dbSchema);
        }
    }
}

---

From source file:org.opendatakit.survey.android.utilities.EncryptionUtils.java

/**
 * Retrieve the encryption information for this row.
 * /*  w ww .j  a  va  2 s.c om*/
 * @param appName
 * @param tableId
 * @param xmlBase64RsaPublicKey
 * @param instanceId
 * @return
 */
public static EncryptedFormInformation getEncryptedFormInformation(String appName, String tableId,
        String xmlBase64RsaPublicKey, String instanceId) {

    // fetch the form information
    String base64RsaPublicKey = xmlBase64RsaPublicKey;
    PublicKey pk;
    Base64Wrapper wrapper;

    if (base64RsaPublicKey == null || base64RsaPublicKey.length() == 0) {
        return null; // this is legitimately not an encrypted form
    }

    // submission must have an OpenRosa metadata block with a non-null
    // instanceID value.
    if (instanceId == null) {
        WebLogger.getLogger(appName).e(t, "No OpenRosa metadata block or no instanceId defined in that block");
        return null;
    }

    int version = android.os.Build.VERSION.SDK_INT;
    if (version < 8) {
        WebLogger.getLogger(appName).e(t, "Phone does not support encryption.");
        return null; // save unencrypted
    }

    // this constructor will throw an exception if we are not
    // running on version 8 or above (if Base64 is not found).
    try {
        wrapper = new Base64Wrapper();
    } catch (ClassNotFoundException e) {
        WebLogger.getLogger(appName).e(t, "Phone does not have Base64 class but API level is " + version);
        WebLogger.getLogger(appName).printStackTrace(e);
        return null; // save unencrypted
    }

    // OK -- Base64 decode (requires API Version 8 or higher)
    byte[] publicKey = wrapper.decode(base64RsaPublicKey);
    X509EncodedKeySpec publicKeySpec = new X509EncodedKeySpec(publicKey);
    KeyFactory kf;
    try {
        kf = KeyFactory.getInstance(RSA_ALGORITHM);
    } catch (NoSuchAlgorithmException e) {
        WebLogger.getLogger(appName).e(t, "Phone does not support RSA encryption.");
        WebLogger.getLogger(appName).printStackTrace(e);
        return null;
    }
    try {
        pk = kf.generatePublic(publicKeySpec);
    } catch (InvalidKeySpecException e) {
        WebLogger.getLogger(appName).printStackTrace(e);
        WebLogger.getLogger(appName).e(t, "Invalid RSA public key.");
        return null;
    }
    return new EncryptedFormInformation(appName, tableId, xmlBase64RsaPublicKey, instanceId, pk, wrapper);
}

---

From source file:com.trsst.Common.java

/**
 * Converts a X509-encoded EC key to a PublicKey.
 *//*w ww.j a va  2 s.com*/
public static PublicKey toPublicKeyFromX509(String stored) throws GeneralSecurityException {
    KeyFactory factory = KeyFactory.getInstance("EC");
    byte[] data = Base64.decodeBase64(stored);
    X509EncodedKeySpec spec = new X509EncodedKeySpec(data);
    return factory.generatePublic(spec);

}

---

From source file:org.opendatakit.services.utilities.EncryptionUtils.java

/**
 * Retrieve the encryption information for this row.
 * //w  w  w .  ja  v  a 2  s .c om
 * @param appName
 * @param tableId
 * @param xmlBase64RsaPublicKey
 * @param instanceId
 * @return
 */
public static EncryptedFormInformation getEncryptedFormInformation(String appName, String tableId,
        String xmlBase64RsaPublicKey, String instanceId) {

    // fetch the form information
    String base64RsaPublicKey = xmlBase64RsaPublicKey;
    PublicKey pk;
    Base64Wrapper wrapper;

    if (base64RsaPublicKey == null || base64RsaPublicKey.length() == 0) {
        return null; // this is legitimately not an encrypted form
    }

    // submission must have an OpenRosa metadata block with a non-null
    // instanceID value.
    if (instanceId == null) {
        WebLogger.getLogger(appName).e(t, "No OpenRosa metadata block or no instanceId defined in that block");
        return null;
    }

    int version = android.os.Build.VERSION.SDK_INT;
    if (version < 8) {
        WebLogger.getLogger(appName).e(t, "Phone does not support encryption.");
        return null; // save unencrypted
    }

    // this constructor will throw an exception if we are not
    // running on version 8 or above (if Base64 is not found).
    try {
        wrapper = new Base64Wrapper(appName);
    } catch (ClassNotFoundException e) {
        WebLogger.getLogger(appName).e(t, "Phone does not have Base64 class but API level is " + version);
        WebLogger.getLogger(appName).printStackTrace(e);
        return null; // save unencrypted
    }

    // OK -- Base64 decode (requires API Version 8 or higher)
    byte[] publicKey = wrapper.decode(base64RsaPublicKey);
    X509EncodedKeySpec publicKeySpec = new X509EncodedKeySpec(publicKey);
    KeyFactory kf;
    try {
        kf = KeyFactory.getInstance(RSA_ALGORITHM);
    } catch (NoSuchAlgorithmException e) {
        WebLogger.getLogger(appName).e(t, "Phone does not support RSA encryption.");
        WebLogger.getLogger(appName).printStackTrace(e);
        return null;
    }
    try {
        pk = kf.generatePublic(publicKeySpec);
    } catch (InvalidKeySpecException e) {
        WebLogger.getLogger(appName).printStackTrace(e);
        WebLogger.getLogger(appName).e(t, "Invalid RSA public key.");
        return null;
    }
    return new EncryptedFormInformation(appName, tableId, xmlBase64RsaPublicKey, instanceId, pk, wrapper);
}

---

From source file:com.mytalentfolio.h_daforum.CconnectToServer.java

/**
 * Creates a new instance of {@code PublicKey}. Convert the string formatted
 * public key into {@code PublicKey} type.
 * //from w w  w  .  j a v  a2s  .  c om
 * @param key
 *            the string formated public key.
 * @return the new {@code PublicKey} instance.
 * @throws NoSuchAlgorithmException
 *             if no provider provides the requested algorithm.
 * @throws InvalidKeyException
 *             if the specified keySpec is invalid.
 * 
 */
// Converting the Server Public key format to Java compatible from
private PublicKey getServerPublicKey(String key) throws NoSuchAlgorithmException, InvalidKeySpecException {

    // Converting the Server Public key format to Java compatible from
    key = key.replace("-----BEGIN PUBLIC KEY-----\n", "");
    key = key.replace("\n-----END PUBLIC KEY-----", "");

    // Creating the public key from the string format received from server
    KeyFactory keyFactory = KeyFactory.getInstance("RSA");
    PublicKey serverPublicKeySig = keyFactory
            .generatePublic(new X509EncodedKeySpec(Base64.decode(key.toString(), Base64.DEFAULT)));
    return serverPublicKeySig;
}

---

From source file:com.intuit.s3encrypt.S3Encrypt.java

public static void saveKeyPair(String filename, KeyPair keyPair) throws IOException {
    PublicKey publicKey = keyPair.getPublic();
    PrivateKey privateKey = keyPair.getPrivate();

    // Save public key to file.
    X509EncodedKeySpec x509EncodedKeySpec = new X509EncodedKeySpec(publicKey.getEncoded());
    FileOutputStream keyfos = new FileOutputStream(filename + ".pub");
    keyfos.write(x509EncodedKeySpec.getEncoded());
    keyfos.close();/*from   w w  w. j  a v a2  s.c om*/

    // Save private key to file.
    PKCS8EncodedKeySpec pkcs8EncodedKeySpec = new PKCS8EncodedKeySpec(privateKey.getEncoded());
    keyfos = new FileOutputStream(filename);
    keyfos.write(pkcs8EncodedKeySpec.getEncoded());
    keyfos.close();

}

---

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