Code

Setup two factor authenticator protection at login on Ubuntu or Debian

October 14, 2018 by Simon

This is a quick post that shows how I set up two-factor authenticator protection at login on Ubuntu or Debian

Aside

If you have not read my previous posts I have now moved my blog to the awesome UpCloud host (signup using this link to get $25 free UpCloud VM credit). I compared Digital Ocean, Vultr and UpCloud Disk IO here and UpCloud came out on top by a long way (read the blog post here). Here is my blog post on moving from Vultr to UpCloud.

Buy a domain name here

Now on with the post.

Backup

I ensured I had a backup of my server. This is easy to do on UpCloud. If something goes wrong I will rollback.

Why Setup 2FA on SSH connections

1) Firewalls or whitelists may not protect you from detection.

2) SSH authorisation bypass bugs may appear.

I’ve just relased libssh 0.8.4 and 0.7.6 to address CVE-2018-10933. This is an auth bypass in the server. Please update as soon as possible! https://t.co/Qhra2TXqzm
— Andreas Schneider (@cryptomilk) October 16, 2018

2FA authorisation is another lube of defence.

Yubico Yubi Key

Read my block post here to learn how to use the Yubico YubiKey NEO hardware-based two-factor authentication device to improve authentication and logins to OSX and software

Timezone

It is important that you set the same timezone as the server you are trying to secure two 2FA. I can run this command on Linux to set the timezone.

dpkg-reconfigure tzdata

1	dpkg-reconfigure tzdata

Check the time command

sudo hwclock --show

1	sudo hwclock --show

Output

2018-10-14 20:34:02.994867+1100

Install Google Authenticator

sudo apt install libpam-google-authenticator

1	sudo apt install libpam-google-authenticator

Output

> Reading package lists…
> Building dependency tree
> Reading state information… Done
> The following additional packages will be installed:
> libqrencode3
> The following NEW packages will be installed:
> libpam-google-authenticator libqrencode3
> 0 upgraded, 2 newly installed, 0 to remove and 11 not upgraded.
> Need to get 56.8 kB of archives.
> After this operation, 183 kB of additional disk space will be used.
> Do you want to continue? [Y/n] y
> Get:1 http://us.archive.ubuntu.com/ubuntu bionic/universe amd64 libqrencode3 amd64 3.4.4-1build1 [23.9 kB]
> Get:2 http://us.archive.ubuntu.com/ubuntu bionic/universe amd64 libpam-google-authenticator amd64 20170702-1 [32.9 kB]
> Fetched 56.8 kB in 0s (426 kB/s)
> Selecting previously unselected package libqrencode3:amd64.
> (Reading database … 122554 files and directories currently installed.)
> Preparing to unpack …/libqrencode3_3.4.4-1build1_amd64.deb …
> Unpacking libqrencode3:amd64 (3.4.4-1build1) …
> Selecting previously unselected package libpam-google-authenticator.
> Preparing to unpack …/libpam-google-authenticator_20170702-1_amd64.deb …
> Unpacking libpam-google-authenticator (20170702-1) …
> Setting up libqrencode3:amd64 (3.4.4-1build1) …
> Processing triggers for libc-bin (2.27-3ubuntu1) …
> Processing triggers for man-db (2.8.3-2) …
> Setting up libpam-google-authenticator (20170702-1) …

Configure Google Authenticator

Run google-authenticator and answer the following questions

Q1) Do you want authentication tokens to be time-based (y/n): Y

You will be presented with a token you can add to the Yubico Authenticator or other authenticator apps,

TIP: Write down any recovery codes displayed

Scan the code with your 2FA Authenticator app (e.g Google Authenticator, Yubico Authenticator or freeOTP from https://freeotp.github.io)

The 2FA code is now available for use in my YubiCo Authenticator app

Q2) Do you want me to update your “/root/.google_authenticator” file? (y/n): Y

Q3) Do you want to disallow multiple uses of the same authentication
token? This restricts you to one login about every 30s, but it increases
your chances to notice or even prevent man-in-the-middle attacks (y/n): Y

Q4) By default, a new token is generated every 30 seconds by the mobile app.
In order to compensate for possible time-skew between the client and the server,
we allow an extra token before and after the current time. This allows for a
time skew of up to 30 seconds between authentication server and client. If you
experience problems with poor time synchronization, you can increase the window
from its default size of 3 permitted codes (one previous code, the current
code, the next code) to 17 permitted codes (the 8 previous codes, the current
code, and the 8 next codes). This will permit for a time skew of up to 4 minutes
between client and server.
Do you want to do so? (y/n) y: Y

Q5) If the computer that you are logging into isn’t hardened against brute-force login attempts, you can enable rate-limiting for the authentication module. By default, this limits attackers to no more than 3 login attempts every 30s.
Do you want to enable rate-limiting? (y/n): Y

Review Google Authenticator Config

sudo nano ~/.google_authenticator

1	sudo nano ~/.google_authenticator

You can change this if need be.

Edit SSH Configuration (Authentication)

sudo nano /etc/pam.d/sshd

1	sudo nano /etc/pam.d/sshd

Add the line below the line “@include common-auth”

auth required pam_google_authenticator.so

1	auth required pam_google_authenticator.so

Comment out the following line (this is the most important step, this forces 2FA)

#@include common-auth

1	#@include common-auth

Edit SSH Configuration (Challenge Response Authentication)

Edit the ssh config file.

sudo nano /etc/ssh/sshd_config

1	sudo nano /etc/ssh/sshd_config

Search For

ChallengeResponseAuthentication

1	ChallengeResponseAuthentication

Set this to

yes

yes

Ensure the following line exists

UsePAM yes

1	UsePAM yes

Add the following line

AuthenticationMethods publickey,password publickey,keyboard-interactive

1	AuthenticationMethods publickey,password publickey,keyboard-interactive

Edit Common Auth

sudo nano /etc/pam.d/common-auth

1	sudo nano /etc/pam.d/common-auth

Add the following line before the line that says “auth [success=1 default=ignore] pam_unix.so nullok_secure”

auth required pam_google_authenticator.so

1	auth required pam_google_authenticator.so

Restart the SSH service and test the codes in a new terminal before rebooting.

TIP: Do not exit the working connected session and you may need it to fix issues.

Restart the SSH service a tets it

/etc/init.d/ssh restart
[ ok ] Restarting ssh (via systemctl): ssh.service.

1 2	/etc/init.d/ssh restart [ ok ] Restarting ssh (via systemctl): ssh.service.

If you have failed to set it up authenticator codes will fail to work.

Failed attempts

Further authentication required
Using keyboard-interactive authentication.
Verification code:
Using keyboard-interactive authentication.
Verification code:
Using keyboard-interactive authentication.
Verification code:

Further authentication required

Using keyboard-interactive authentication.

Verification code:

Using keyboard-interactive authentication.

Verification code:

Using keyboard-interactive authentication.

Verification code:

When it is configured OK (at login SSH connection) I was prompted for further information

Further Information required
Using keyboard-interactive authentication
Verification Code: ######
sshuser@server#

Further Information required

Using keyboard-interactive authentication

Verification Code: ######

sshuser@server#

I am now prompted at login to insert a 2FA token (after inserting my YubiKey)

Turn on 2FA on other sites

Check out https://www.turnon2fa.com and tutorials here.

I hope this guide helps someone.

Please consider using my referral code and get $25 UpCloud VM credit if you need to create a server online.

https://www.upcloud.com/register/?promo=D84793

Ask a question or recommend an article

Revision History

V1.3 turnon2fa.com

V1.2 ssh auth bypass

v1.1 Authenticator apps

v1.0 Initial Post

Useful Java FX Code I use in a project using IntelliJ IDEA and jdk1.8.0_161.jdk

September 15, 2018 by Simon

This is some useful Java FX Code I use in a project using IntelliJ IDEA and jdk1.8.0_161.jdk. I am sharing this code here for the #100DaysOfCode readers and people looking for code answers.

Aside

If you have not read my previous posts I have now moved my blog to the awesome UpCloud host (signup using this link to get $25 free UpCloud VM credit). I compared Digital Ocean, Vultr and UpCloud Disk IO here and UpCloud came out on top by a long way (read the blog post here). Here is my blog post on moving from Vultr to UpCloud.

Buy a domain name here

As promised, Java code.

Background

I am developing a Java (Windows/Mac/Linux) JavaFX app to assist me (and others) click their way through a Server deployment (domain name purchase, email setup, DNS etc) to the configuration (server host, operating, web server, database etc) to securing (DNSSEC, SPF, DMARC, Firewall etc).

I want to automate much of what I have learned over the last 2 years building apps and services (see all blog DevSecOps posts here: https://fearby.com/all/ ) on a self-managed Linux stack. I love the lower cost, higher security and flexibility of deploying self-managed servers on Linux (I love UpCloud) but not the command line interactions (that’s why I am learning Java, I do not want to develop another web-based GUI as I find them less secure than a good SSH connection). I have been developing on Windows since 1999.

Now show me Jave code.

Save date-time variables in Controller Initialize event to use in Logging

I like to log console events to a filename that is the date-time an app was started. Add this to “public class Controller implements Initializable”

public Date todaysDateTime = new Date();
DateFormat datetimeFileNameCompatible = new SimpleDateFormat("dd-MMM-yyyy HH-mm-ss.S");
public String strLogFileTimeFilename = "zAPPDISCO - " + datetimeFileNameCompatible.format(todaysDateTime);

public Date todaysDateTime = new Date();

DateFormat datetimeFileNameCompatible = new SimpleDateFormat("dd-MMM-yyyy HH-mm-ss.S");

public String strLogFileTimeFilename = "zAPPDISCO - " + datetimeFileNameCompatible.format(todaysDateTime);

Now the log filename can be used below in a log function (DoLog).

Read Ini File

Download http://ini4j.sourceforge.net/ (binary files) and add ini4j-0.5.4.jar to your source folder (or use Maven etc to download the package)

Import the ini4j class to your Controller.

import org.ini4j.Ini;

1	import org.ini4j.Ini;

Sample appname.ini file

# Ini file comment goes here

[config]
forceoffline = false
log = true

[settings]
checkipatstartup = true
checkinternetconnectionatstartup = true

[app]
name=blah blah app name
app_major = 1
appminor = 0
apprevision = 18

[mainwindow]
mainwidth = 1619.0
mainheight = 1119.0
mainleft = 147.0
maintop = 44.0

[settingswindow]
settingswidth = 1286.0
settingsheight = 1010.0
settingsleft = 9.0
settingstop = 153.0

# Ini file comment goes here

[config]

forceoffline = false

log = true

[settings]

checkipatstartup = true

checkinternetconnectionatstartup = true

[app]

name=blah blah app name

app_major = 1

appminor = 0

apprevision = 18

[mainwindow]

mainwidth = 1619.0

mainheight = 1119.0

mainleft = 147.0

maintop = 44.0

[settingswindow]

settingswidth = 1286.0

settingsheight = 1010.0

settingsleft = 9.0

settingstop = 153.0

Load an Ini file

objIni = new Ini();
System.out.println("  - Opening app.ini" );
try {
    objIni.load( new FileReader("src/appname/appname.ini"));
    System.out.println("   - Loaded INI (OK)" );

} catch (IOException ex) {
    System.out.println("   - Error Loading appname.ini ( " + ex.toString() + ")");

}

objIni = new Ini();

System.out.println(" - Opening app.ini" );

try {

objIni.load( new FileReader("src/appname/appname.ini"));

System.out.println(" - Loaded INI (OK)" );

} catch (IOException ex) {

System.out.println(" - Error Loading appname.ini ( " + ex.toString() + ")");

}

Now we are ready to load values from the loaded Ini file.

Load a Boolean from Ini file

I like to set if an app can talk to the net (by checking an Ini file to see if a user does not want online activity).

private Boolean FORCE_OFFLINE = false;
FORCE_OFFLINE = objIni.get("config","forceoffline",boolean.class);

1 2	private Boolean FORCE_OFFLINE = false; FORCE_OFFLINE = objIni.get("config","forceoffline",boolean.class);

Load String from an Ini File

System.out.println (" - App Name: " + objIni.get("app","name"));

1	System.out.println (" - App Name: " + objIni.get("app","name"));

Global Variables Class

package appname;

public class GlobalVariables {

    public int APP_MAJOR = 0;
    public int APP_MINOR = 0;
    public int APP_REVISION = 18;

    //etc
}

package appname;

public class GlobalVariables {

public int APP_MAJOR = 0;

public int APP_MINOR = 0;

public int APP_REVISION = 18;

//etc

}

Copy the global variables class in a new controller, add the following code to your new controller’s “public class Controller implements Initializable” function

GlobalVariables global = new GlobalVariables();

1	GlobalVariables global = new GlobalVariables();

Read the constants in the global variable class (copy)

DoLog("Started App Disco (v" + global.APP_MAJOR + "." + global.APP_MINOR  + "." + global.APP_REVISION + ") - https://fearby.com");

1	DoLog("Started App Disco (v" + global.APP_MAJOR + "." + global.APP_MINOR + "." + global.APP_REVISION + ") - https://fearby.com");

Log function that writes to the stdout console and physical log file if desired (set in the ini file)

private void DoLog(String logThis) { 
    // Log to std out
    System.out.println(logThis); 

    // Write to log file
    try{
    	// Declare a new Ini object
        objIni = new Ini();

        System.out.println("  - Opening appname.ini" );
        try {
            objIni.load( new FileReader("src/appname/appname.ini"));
            System.out.println("   - Loaded INI (OK)" );
        } catch (IOException ex) {
        	// Error
            System.out.println("   - Error Reading from appname.ini ( " + ex.toString() + ")");
        }

        // Check the ini file and see if the user wants to out output a log file.
        System.out.println("    - Reading [config] section in Ini file" );

        Boolean DO_LOG;
        DO_LOG = objIni.get("config","log",boolean.class);
        System.out.println("     - DO_LOG = " + DO_LOG.toString() );

        // Does the use want the console to be logged to a date stamped file too?
        if (DO_LOG == true) {
            
            // Append To File
            FileWriter fstream = new FileWriter( strLogFileTimeFilename.toString() + ".log", true);
            BufferedWriter out = new BufferedWriter(fstream);

            // Get Latest Time to prefix to the log entry
            Date todaysDateTimeLog = new Date();
            DateFormat datetimeHumanReadableFormat = new SimpleDateFormat("dd/MM/yyyy HH:mm:ss");
            String strLogFileTimeHuman = datetimeHumanReadableFormat.format(todaysDateTimeLog);

            // Log Desired Line
            String strLogThisTS = strLogFileTimeHuman.toString() + " = " +  logThis;
            out.write(strLogThisTS + "\n");

            //Close the output stream
            out.close();

        } else {
            //System.out.println("      - Skipping logging as set in the ini file.." );
        }


    } catch (Exception e){
    	//Catch exception if any
        // todo: Need to write to System.out.printl to prevent loop
        System.out.println ("Error: " + e.getMessage());  
        
    }
}

private void DoLog(String logThis) {

// Log to std out

System.out.println(logThis);

// Write to log file

try{

// Declare a new Ini object

objIni = new Ini();

System.out.println(" - Opening appname.ini" );

try {

objIni.load( new FileReader("src/appname/appname.ini"));

System.out.println(" - Loaded INI (OK)" );

} catch (IOException ex) {

// Error

System.out.println(" - Error Reading from appname.ini ( " + ex.toString() + ")");

}

// Check the ini file and see if the user wants to out output a log file.

System.out.println(" - Reading [config] section in Ini file" );

Boolean DO_LOG;

DO_LOG = objIni.get("config","log",boolean.class);

System.out.println(" - DO_LOG = " + DO_LOG.toString() );

// Does the use want the console to be logged to a date stamped file too?

if (DO_LOG == true) {

// Append To File

FileWriter fstream = new FileWriter( strLogFileTimeFilename.toString() + ".log", true);

BufferedWriter out = new BufferedWriter(fstream);

// Get Latest Time to prefix to the log entry

Date todaysDateTimeLog = new Date();

DateFormat datetimeHumanReadableFormat = new SimpleDateFormat("dd/MM/yyyy HH:mm:ss");

String strLogFileTimeHuman = datetimeHumanReadableFormat.format(todaysDateTimeLog);

// Log Desired Line

String strLogThisTS = strLogFileTimeHuman.toString() + " = " + logThis;

out.write(strLogThisTS + "\n");

//Close the output stream

out.close();

} else {

//System.out.println(" - Skipping logging as set in the ini file.." );

}

} catch (Exception e){

//Catch exception if any

// todo: Need to write to System.out.printl to prevent loop

System.out.println ("Error: " + e.getMessage());

}

Get Contents from URL

private static String getContentsFromURL(String theUrl)
{
    StringBuilder content = new StringBuilder();

    try
    {
        // create a url object
        URL url = new URL(theUrl);

        //todo: Add Newwor check code
        
        URLConnection urlConnection = url.openConnection();
        BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(urlConnection.getInputStream()));

        String line;

        while ((line = bufferedReader.readLine()) != null)
        {
            content.append(line + "\n");
        }
        bufferedReader.close();
    }
    catch(Exception e) {
        e.printStackTrace();
    }

    return content.toString();
}

private static String getContentsFromURL(String theUrl)

{

StringBuilder content = new StringBuilder();

try

{

// create a url object

URL url = new URL(theUrl);

//todo: Add Newwor check code

URLConnection urlConnection = url.openConnection();

BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(urlConnection.getInputStream()));

String line;

while ((line = bufferedReader.readLine()) != null)

{

content.append(line + "\n");

}

bufferedReader.close();

}

catch(Exception e) {

e.printStackTrace();

}

return content.toString();

}

Test the internet connection by downloading the contents of a URL

String isup = getContentsFromURL("https://audit.fearby.com/isup/");
System.out.println( "Is UP: " + isup.trim().toUpperCase().toString());

1 2	String isup = getContentsFromURL("https://audit.fearby.com/isup/"); System.out.println( "Is UP: " + isup.trim().toUpperCase().toString());

Get the IPV4 address of the calling client

String isup = getContentsFromURL("https://audit.fearby.com/ip/");
System.out.println( "Is UP: " + isup.trim().toUpperCase().toString());

1 2	String isup = getContentsFromURL("https://audit.fearby.com/ip/"); System.out.println( "Is UP: " + isup.trim().toUpperCase().toString());

The IP page contains

<?php
echo htmlspecialchars($_SERVER['REMOTE_ADDR'], ENT_QUOTES, 'UTF-8');
?>

<?php

echo htmlspecialchars($_SERVER['REMOTE_ADDR'], ENT_QUOTES, 'UTF-8');

SSH to a server and run a command

This is handy for connecting to a server via SSH (and using an SSH passphrase, not a system username password). This is using the Jsch library from http://www.jcraft.com/jsch/

try {
    JSch jsch = new JSch();

    String user = "sshusername";
    DoLog("User: " + user);

    String host = "yourserver.com";
    DoLog("Host: " + host);

    int port = 22;
    DoLog("Port: " + port);

    String privateKey = System.getProperty("user.dir") + "/" +  "yourserver.rsa";
    DoLog("Private Key: " + System.getProperty("user.dir") + "/" +  "yourserver.rsa");

    String sshPassPhrase = "@dd-y0ur-really-str0ng-ssh-pa$$word-h3r3";

    DoLog("Adding ssh key passphrase to session");
    jsch.addIdentity(privateKey, sshPassPhrase);
    DoLog("Private Key added to ssh session");

    Session session = jsch.getSession(user, host, port);
    DoLog("Session Created");

    java.util.Properties config = new java.util.Properties();
// see http://stackoverflow.com/questions/30178936/jsch-sftp-security-with-session-setconfigstricthostkeychecking-no

    DoLog("SSH Config: StrictHostKeyChecking: no");
    config.put("StrictHostKeyChecking", "no");
    session.setConfig(config);

    DoLog("Connecting");
    session.connect();

    DoLog("Preparing Remote Command");
    String command = "uptime";

    Channel channel = session.openChannel("exec");
    ((ChannelExec)channel).setCommand(command);
    channel.setInputStream(null);
    ((ChannelExec)channel).setErrStream(System.err);

    InputStream input = channel.getInputStream();
    channel.connect();

    try {
        InputStreamReader inputReader = new InputStreamReader(input);
        BufferedReader bufferedReader = new BufferedReader(inputReader);
        String line = null;
        while((line = bufferedReader.readLine()) != null){
            System.out.println(line);
        }
        bufferedReader.close();

        inputReader.close(); }
    catch (IOException ex) {
        ex.printStackTrace();
    }
    channel.disconnect();

    session.disconnect();
    DoLog("SSH session disconnected.....");


} catch (Exception e) {
    System.err.println(e);
}

try {

JSch jsch = new JSch();

String user = "sshusername";

DoLog("User: " + user);

String host = "yourserver.com";

DoLog("Host: " + host);

int port = 22;

DoLog("Port: " + port);

String privateKey = System.getProperty("user.dir") + "/" + "yourserver.rsa";

DoLog("Private Key: " + System.getProperty("user.dir") + "/" + "yourserver.rsa");

String sshPassPhrase = "@dd-y0ur-really-str0ng-ssh-pa$$word-h3r3";

DoLog("Adding ssh key passphrase to session");

jsch.addIdentity(privateKey, sshPassPhrase);

DoLog("Private Key added to ssh session");

Session session = jsch.getSession(user, host, port);

DoLog("Session Created");

java.util.Properties config = new java.util.Properties();

// see http://stackoverflow.com/questions/30178936/jsch-sftp-security-with-session-setconfigstricthostkeychecking-no

DoLog("SSH Config: StrictHostKeyChecking: no");

config.put("StrictHostKeyChecking", "no");

session.setConfig(config);

DoLog("Connecting");

session.connect();

DoLog("Preparing Remote Command");

String command = "uptime";

Channel channel = session.openChannel("exec");

((ChannelExec)channel).setCommand(command);

channel.setInputStream(null);

((ChannelExec)channel).setErrStream(System.err);

InputStream input = channel.getInputStream();

channel.connect();

try {

InputStreamReader inputReader = new InputStreamReader(input);

BufferedReader bufferedReader = new BufferedReader(inputReader);

String line = null;

while((line = bufferedReader.readLine()) != null){

System.out.println(line);

}

bufferedReader.close();

inputReader.close(); }

catch (IOException ex) {

ex.printStackTrace();

}

channel.disconnect();

session.disconnect();

DoLog("SSH session disconnected.....");

} catch (Exception e) {

System.err.println(e);

}

Output:

16:32:06 up 7 days, 14:59, 1 user, load average: 0.08, 0.02, 0.01

Read more on RSA keys here.

Generate an RSA key here.

Upload a file to a server via SCP over SSH

try {
    JSch jsch = new JSch();

    String user = "sshusername";
    DoLog("User: " + user);

    String host = "yourserver.com";
    DoLog("Host: " + host);

    int port = 22;
    DoLog("Port: " + port);

    String privateKey = System.getProperty("user.dir") + "/" +  "yourserver.rsa";
    DoLog("Private Key: " + System.getProperty("user.dir") + "/" +  "yourserver.rsa");

    String sshPassPhrase = "@dd-y0ur-really-str0ng-ssh-pa$$word-h3r3";
    DoLog("Adding ssh key passphrase to session");
    
    jsch.addIdentity(privateKey, sshPassPhrase);
    DoLog("Private Key added to ssh session");

    Session session = jsch.getSession(user, host, port);
    DoLog("Session Created");

    java.util.Properties config = new java.util.Properties();

    //session.setConfig(
    //        "PreferredAuthentications",
    //        "publickey,gssapi-with-mic,keyboard-interactive,password");

    // disabling StrictHostKeyChecking may help to make connection but makes it insecure
    // see http://stackoverflow.com/questions/30178936/jsch-sftp-security-with-session-setconfigstricthostkeychecking-no

    DoLog("SSH Config: StrictHostKeyChecking: no");
    config.put("StrictHostKeyChecking", "no");
    session.setConfig(config);

    DoLog("Connecting");
    session.connect();


    DoLog("Preparing SFTP");
    Channel channel = session.openChannel("sftp");
    channel.setInputStream(System.in);
    channel.setOutputStream(System.out);
    channel.connect();

    ChannelSftp c = (ChannelSftp) channel;
    String fileName = "upload.txt";
    DoLog("Uplaoding file: " + fileName + " to " + "/");
    c.put(fileName, "/");
    c.exit();
    DoLog("Done Uploading File");
    channel.disconnect();



} catch (Exception e) {
    System.err.println(e);
}

try {

JSch jsch = new JSch();

String user = "sshusername";

DoLog("User: " + user);

String host = "yourserver.com";

DoLog("Host: " + host);

int port = 22;

DoLog("Port: " + port);

String privateKey = System.getProperty("user.dir") + "/" + "yourserver.rsa";

DoLog("Private Key: " + System.getProperty("user.dir") + "/" + "yourserver.rsa");

String sshPassPhrase = "@dd-y0ur-really-str0ng-ssh-pa$$word-h3r3";

DoLog("Adding ssh key passphrase to session");

jsch.addIdentity(privateKey, sshPassPhrase);

DoLog("Private Key added to ssh session");

Session session = jsch.getSession(user, host, port);

DoLog("Session Created");

java.util.Properties config = new java.util.Properties();

//session.setConfig(

// "PreferredAuthentications",

// "publickey,gssapi-with-mic,keyboard-interactive,password");

// disabling StrictHostKeyChecking may help to make connection but makes it insecure

// see http://stackoverflow.com/questions/30178936/jsch-sftp-security-with-session-setconfigstricthostkeychecking-no

DoLog("SSH Config: StrictHostKeyChecking: no");

config.put("StrictHostKeyChecking", "no");

session.setConfig(config);

DoLog("Connecting");

session.connect();

DoLog("Preparing SFTP");

Channel channel = session.openChannel("sftp");

channel.setInputStream(System.in);

channel.setOutputStream(System.out);

channel.connect();

ChannelSftp c = (ChannelSftp) channel;

String fileName = "upload.txt";

DoLog("Uplaoding file: " + fileName + " to " + "/");

c.put(fileName, "/");

c.exit();

DoLog("Done Uploading File");

channel.disconnect();

} catch (Exception e) {

System.err.println(e);

}

On the server:

cat /upload.txt
>Hello World

Encrypt Text (AES/CBC/PKCS5/SHA-256)

public static byte[] encrypt(String strInput, String strPasswordKey) throws Exception {
    System.out.println("\n\nEncrypt()");
    byte[] clean = strInput.getBytes();

    // Generating IV
    int ivSize = 16;

    byte[] iv = new byte[ivSize];
    SecureRandom strRandom = new SecureRandom();
    
    strRandom.nextBytes(iv);
    IvParameterSpec ivParamSpec = new IvParameterSpec(iv);
    
    // Hashing key
    MessageDigest strDigest = MessageDigest.getInstance("SHA-256");
    
    strDigest.update(strPasswordKey.getBytes("UTF-8"));
    byte[] keyBytes = new byte[16];
    
    System.arraycopy(strDigest.digest(), 0, keyBytes, 0, keyBytes.length);
    SecretKeySpec secretKeySpec = new SecretKeySpec(keyBytes, "AES");
    
    // Encrypt
    Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
    
    cipher.init(Cipher.ENCRYPT_MODE, secretKeySpec, ivParamSpec);

    byte[] encrypted = cipher.doFinal(clean);
    
    // Combine IV and encrypted part
    byte[] encryptedIVAndText = new byte[ivSize + encrypted.length];

    System.arraycopy(iv, 0, encryptedIVAndText, 0, ivSize);
    
    System.arraycopy(encrypted, 0, encryptedIVAndText, ivSize, encrypted.length);

    String senctext = new String(encrypted, StandardCharsets.UTF_8);

    System.out.println("   encrypted: " + senctext.toString() + ", encryptedIVAndText: " + encryptedIVAndText.toString() + ", size: " + ivSize + ", length: " + encrypted.length);

    return encryptedIVAndText;
}

public static byte[] encrypt(String strInput, String strPasswordKey) throws Exception {

System.out.println("\n\nEncrypt()");

byte[] clean = strInput.getBytes();

// Generating IV

int ivSize = 16;

byte[] iv = new byte[ivSize];

SecureRandom strRandom = new SecureRandom();

strRandom.nextBytes(iv);

IvParameterSpec ivParamSpec = new IvParameterSpec(iv);

// Hashing key

MessageDigest strDigest = MessageDigest.getInstance("SHA-256");

strDigest.update(strPasswordKey.getBytes("UTF-8"));

byte[] keyBytes = new byte[16];

System.arraycopy(strDigest.digest(), 0, keyBytes, 0, keyBytes.length);

SecretKeySpec secretKeySpec = new SecretKeySpec(keyBytes, "AES");

// Encrypt

Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");

cipher.init(Cipher.ENCRYPT_MODE, secretKeySpec, ivParamSpec);

byte[] encrypted = cipher.doFinal(clean);

// Combine IV and encrypted part

byte[] encryptedIVAndText = new byte[ivSize + encrypted.length];

System.arraycopy(iv, 0, encryptedIVAndText, 0, ivSize);

System.arraycopy(encrypted, 0, encryptedIVAndText, ivSize, encrypted.length);

String senctext = new String(encrypted, StandardCharsets.UTF_8);

System.out.println(" encrypted: " + senctext.toString() + ", encryptedIVAndText: " + encryptedIVAndText.toString() + ", size: " + ivSize + ", length: " + encrypted.length);

return encryptedIVAndText;

}

Decrypt Text (AES/CBC/PKCS5/SHA-256)

public static String decrypt(byte[] encryptedIvTextBytes, String strPasswordKey) throws Exception {
    System.out.println("\n\ndecrypt()");
    int ivSize = 16;
    int keySize = 16;

    // Extract IV
    byte[] iv = new byte[ivSize];
    System.arraycopy(encryptedIvTextBytes, 0, iv, 0, iv.length);
    IvParameterSpec ivParamSpec = new IvParameterSpec(iv);

    // Extract encrypted part
    int encryptedSize = encryptedIvTextBytes.length - ivSize;
    byte[] encryptedBytes = new byte[encryptedSize];
    System.arraycopy(encryptedIvTextBytes, ivSize, encryptedBytes, 0, encryptedSize);

    // Hash key
    byte[] keyBytes = new byte[keySize];
    MessageDigest strDigest = MessageDigest.getInstance("SHA-256");
    strDigest.update(strPasswordKey.getBytes());
    System.arraycopy(strDigest.digest(), 0, keyBytes, 0, keyBytes.length);
    SecretKeySpec secretKeySpec = new SecretKeySpec(keyBytes, "AES");

    // Decrypt
    Cipher cipherDecrypt = Cipher.getInstance("AES/CBC/PKCS5Padding");
    cipherDecrypt.init(Cipher.DECRYPT_MODE, secretKeySpec, ivParamSpec);
    byte[] decrypted = cipherDecrypt.doFinal(encryptedBytes);

    return new String(decrypted);
}

public static String decrypt(byte[] encryptedIvTextBytes, String strPasswordKey) throws Exception {

System.out.println("\n\ndecrypt()");

int ivSize = 16;

int keySize = 16;

// Extract IV

byte[] iv = new byte[ivSize];

System.arraycopy(encryptedIvTextBytes, 0, iv, 0, iv.length);

IvParameterSpec ivParamSpec = new IvParameterSpec(iv);

// Extract encrypted part

int encryptedSize = encryptedIvTextBytes.length - ivSize;

byte[] encryptedBytes = new byte[encryptedSize];

System.arraycopy(encryptedIvTextBytes, ivSize, encryptedBytes, 0, encryptedSize);

// Hash key

byte[] keyBytes = new byte[keySize];

MessageDigest strDigest = MessageDigest.getInstance("SHA-256");

strDigest.update(strPasswordKey.getBytes());

System.arraycopy(strDigest.digest(), 0, keyBytes, 0, keyBytes.length);

SecretKeySpec secretKeySpec = new SecretKeySpec(keyBytes, "AES");

// Decrypt

Cipher cipherDecrypt = Cipher.getInstance("AES/CBC/PKCS5Padding");

cipherDecrypt.init(Cipher.DECRYPT_MODE, secretKeySpec, ivParamSpec);

byte[] decrypted = cipherDecrypt.doFinal(encryptedBytes);

return new String(decrypted);

}

Input Dialog and Display the Input text in a Dialog

// Input Dialog
TextInputDialog dialog = new TextInputDialog("Simon");
dialog.setTitle("Text Input Dialog");
dialog.setHeaderText("Look, a Text Input Dialog");
dialog.setContentText("Please enter your name:");
Optional<String> result = dialog.showAndWait();
System.out.println("Dialog Result: " + result);
Alert alertinputdialog = new Alert(AlertType.INFORMATION);
alertinputdialog.setTitle("Input Result");
alertinputdialog.setHeaderText(null);
if (result.isPresent()) {
    alertinputdialog.setContentText( "Result: " + result.get().toString());
} else {
    alertinputdialog.setContentText("Result: ");
}
alertinputdialog.showAndWait();

// Input Dialog

TextInputDialog dialog = new TextInputDialog("Simon");

dialog.setTitle("Text Input Dialog");

dialog.setHeaderText("Look, a Text Input Dialog");

dialog.setContentText("Please enter your name:");

Optional<String> result = dialog.showAndWait();

System.out.println("Dialog Result: " + result);

Alert alertinputdialog = new Alert(AlertType.INFORMATION);

alertinputdialog.setTitle("Input Result");

alertinputdialog.setHeaderText(null);

if (result.isPresent()) {

alertinputdialog.setContentText( "Result: " + result.get().toString());

} else {

alertinputdialog.setContentText("Result: ");

}

alertinputdialog.showAndWait();

Input:

GUI Output:

Standard Message Box

// Standard Message Box
Alert alertmessagebox = new Alert(AlertType.INFORMATION);
alertmessagebox.setTitle("Base64 (Style 1/2)");
alertmessagebox.setHeaderText(null);
alertmessagebox.setContentText("About to convert '" + result.get().toString() + "' to Base64");
alertmessagebox.showAndWait();

// Standard Message Box

Alert alertmessagebox = new Alert(AlertType.INFORMATION);

alertmessagebox.setTitle("Base64 (Style 1/2)");

alertmessagebox.setHeaderText(null);

alertmessagebox.setContentText("About to convert '" + result.get().toString() + "' to Base64");

alertmessagebox.showAndWait();

Output:

Detailed Message Box

// Detailed Message Box
Alert alertwarning = new Alert(AlertType.WARNING);
alertwarning.setTitle("Base64 (Style 2/2)");
alertwarning.setHeaderText("About to convert '" + result.get().toString() + "' to Base64");
alertwarning.setContentText("Base64 strings can be reversed");
alertwarning.showAndWait();

// Detailed Message Box

Alert alertwarning = new Alert(AlertType.WARNING);

alertwarning.setTitle("Base64 (Style 2/2)");

alertwarning.setHeaderText("About to convert '" + result.get().toString() + "' to Base64");

alertwarning.setContentText("Base64 strings can be reversed");

alertwarning.showAndWait();

GUI Output:

Exception Dialog

//Exception Message Box
Alert alertexception = new Alert(AlertType.ERROR);
alertexception.setTitle("Exception Dialog");
alertexception.setHeaderText("Look, an Exception Dialog");
alertexception.setContentText("Could not find file blablah.txt!");
Exception ex = new FileNotFoundException("Could not find file blablah.txt");
// Create expandable Exception.
StringWriter sw = new StringWriter();
PrintWriter pw = new PrintWriter(sw);
ex.printStackTrace(pw);
String exceptionText = sw.toString();
Label label = new Label("The exception stacktrace was:");
TextArea textArea = new TextArea(exceptionText);
textArea.setEditable(false);
textArea.setWrapText(true);
textArea.setMaxWidth(Double.MAX_VALUE);
textArea.setMaxHeight(Double.MAX_VALUE);
GridPane.setVgrow(textArea, Priority.ALWAYS);
GridPane.setHgrow(textArea, Priority.ALWAYS);
GridPane expContent = new GridPane();
expContent.setMaxWidth(Double.MAX_VALUE);
expContent.add(label, 0, 0);
expContent.add(textArea, 0, 1);
// Set expandable Exception into the dialog pane.
alertexception.getDialogPane().setExpandableContent(expContent);
alertexception.showAndWait();

//Exception Message Box

Alert alertexception = new Alert(AlertType.ERROR);

alertexception.setTitle("Exception Dialog");

alertexception.setHeaderText("Look, an Exception Dialog");

alertexception.setContentText("Could not find file blablah.txt!");

Exception ex = new FileNotFoundException("Could not find file blablah.txt");

// Create expandable Exception.

StringWriter sw = new StringWriter();

PrintWriter pw = new PrintWriter(sw);

ex.printStackTrace(pw);

String exceptionText = sw.toString();

Label label = new Label("The exception stacktrace was:");

TextArea textArea = new TextArea(exceptionText);

textArea.setEditable(false);

textArea.setWrapText(true);

textArea.setMaxWidth(Double.MAX_VALUE);

textArea.setMaxHeight(Double.MAX_VALUE);

GridPane.setVgrow(textArea, Priority.ALWAYS);

GridPane.setHgrow(textArea, Priority.ALWAYS);

GridPane expContent = new GridPane();

expContent.setMaxWidth(Double.MAX_VALUE);

expContent.add(label, 0, 0);

expContent.add(textArea, 0, 1);

// Set expandable Exception into the dialog pane.

alertexception.getDialogPane().setExpandableContent(expContent);

alertexception.showAndWait();

GUI Output:

Close Application

Platform.exit();
System.exit(0);

1 2	Platform.exit(); System.exit(0);

Close Child Windows

Add Label to the scene (so we can get the parent scene later)
Declare the label in the Controller initialize function ( “public Label lblTitle;”)
Close the stage

Stage stage = (Stage) lblTitle.getScene().getWindow();
stage.close();

1 2	Stage stage = (Stage) lblTitle.getScene().getWindow(); stage.close();

Handle Listview Item Select

try{
	DoLog("Selected Server: " + lvwServers.getSelectionModel().getSelectedItem().toString() );
} catch( java.lang.NullPointerException null_error ) {
	return;
}

try{

DoLog("Selected Server: " + lvwServers.getSelectionModel().getSelectedItem().toString() );

} catch( java.lang.NullPointerException null_error ) {

return;

}

Open URL in Browser

try {
    Desktop.getDesktop().browse(new URI("https://fearby.com"));
} catch (IOException e1) {
    e1.printStackTrace();
} catch (URISyntaxException e1) {
    e1.printStackTrace();
}

try {

Desktop.getDesktop().browse(new URI("https://fearby.com"));

} catch (IOException e1) {

e1.printStackTrace();

} catch (URISyntaxException e1) {

e1.printStackTrace();

}

Ask for Input, Add to listview and soft the listview

// Get Parent Stage (use existing label in scene)
Stage stage = (Stage) lblTitle.getScene().getWindow();

// Input Dialog
TextInputDialog dialog = new TextInputDialog("Apple");
dialog.setTitle("Enter a Fruit");
dialog.setHeaderText("Enter a Fruit");
dialog.initOwner(stage.getScene().getWindow());
dialog.initModality(Modality.APPLICATION_MODAL);
dialog.setResizable(Boolean.FALSE);
dialog.setContentText("e.g enter a long description here...");

Optional<String> result = dialog.showAndWait();

if (result.isPresent()) {
    System.out.println( "Fruit: " + result.get());
    lvwFruit.getItems().add(result.get());
} else {
    System.out.println("Result: ");
}

// Sory Listview
lvwFruit.getItems().sorted();

// Get Parent Stage (use existing label in scene)

Stage stage = (Stage) lblTitle.getScene().getWindow();

// Input Dialog

TextInputDialog dialog = new TextInputDialog("Apple");

dialog.setTitle("Enter a Fruit");

dialog.setHeaderText("Enter a Fruit");

dialog.initOwner(stage.getScene().getWindow());

dialog.initModality(Modality.APPLICATION_MODAL);

dialog.setResizable(Boolean.FALSE);

dialog.setContentText("e.g enter a long description here...");

Optional<String> result = dialog.showAndWait();

if (result.isPresent()) {

System.out.println( "Fruit: " + result.get());

lvwFruit.getItems().add(result.get());

} else {

System.out.println("Result: ");

}

// Sory Listview

lvwFruit.getItems().sorted();

Open FXML Scene File and Modal Child Window

        try {
            FXMLLoader fxmlLoader = new FXMLLoader(getClass().getResource("childscene.fxml"));
            Parent root1 = (Parent) fxmlLoader.load();
            Stage stage = new Stage();
            stage.initModality(Modality.APPLICATION_MODAL);
            stage.initStyle(StageStyle.UNDECORATED);
            stage.initStyle((StageStyle.UTILITY));
            stage.setTitle("Child Scene Window Title");
            stage.setScene(new Scene(root1));
            stage.show();
        }
        catch(IOException e) {
            e.printStackTrace();
        }

try {

FXMLLoader fxmlLoader = new FXMLLoader(getClass().getResource("childscene.fxml"));

Parent root1 = (Parent) fxmlLoader.load();

Stage stage = new Stage();

stage.initModality(Modality.APPLICATION_MODAL);

stage.initStyle(StageStyle.UNDECORATED);

stage.initStyle((StageStyle.UTILITY));

stage.setTitle("Child Scene Window Title");

stage.setScene(new Scene(root1));

stage.show();

}

catch(IOException e) {

e.printStackTrace();

}

Base64 Encode and Decode

// Base 64
String sString = result.get().toString();
System.out.println("String sString: " + sString);
try {
    byte[] sbString = sString.getBytes("UTF-8");
    System.out.println("Byte Array - sbString: " + sbString);

    for(byte b : sbString){
        System.out.println(b);
    }
}
catch (Exception ex2)
{
    ex2.printStackTrace();
}
String sbbase64EncodedString = Base64.getEncoder().encodeToString(sString.getBytes());
System.out.println("Base64 Encoded - base64EncodedString: " + sbbase64EncodedString);
byte[] sbbase64DecodedString = Base64.getMimeDecoder().decode(sbbase64EncodedString);
String sbase64DecodedString = new String(sbbase64DecodedString);
System.out.println("Base64 Decoded - sbase64DecodedString: " + sbase64DecodedString);

// Message Box Result of Base64
Alert alertresult = new Alert(AlertType.INFORMATION);
alertresult.setTitle("Base64");
alertresult.setHeaderText("Input String: " + sString);
alertresult.setContentText("Base64 Encoded: " + sbbase64EncodedString + "\nDecoded Base64: " + sbase64DecodedString);
alertresult.showAndWait();

// Base 64

String sString = result.get().toString();

System.out.println("String sString: " + sString);

try {

byte[] sbString = sString.getBytes("UTF-8");

System.out.println("Byte Array - sbString: " + sbString);

for(byte b : sbString){

System.out.println(b);

}

catch (Exception ex2)

{

ex2.printStackTrace();

}

String sbbase64EncodedString = Base64.getEncoder().encodeToString(sString.getBytes());

System.out.println("Base64 Encoded - base64EncodedString: " + sbbase64EncodedString);

byte[] sbbase64DecodedString = Base64.getMimeDecoder().decode(sbbase64EncodedString);

String sbase64DecodedString = new String(sbbase64DecodedString);

System.out.println("Base64 Decoded - sbase64DecodedString: " + sbase64DecodedString);

// Message Box Result of Base64

Alert alertresult = new Alert(AlertType.INFORMATION);

alertresult.setTitle("Base64");

alertresult.setHeaderText("Input String: " + sString);

alertresult.setContentText("Base64 Encoded: " + sbbase64EncodedString + "\nDecoded Base64: " + sbase64DecodedString);

alertresult.showAndWait();

CLI Output:

> Base64 Encoded – base64EncodedString: U2ltb24=
> Base64 Decoded – sbase64DecodedString: Simon

GUI Output:

OK and Cancel Confirmation Box

// MessageBox with Buttons
Alert alert = new Alert(AlertType.CONFIRMATION);
alert.setTitle("Confirmation Dialog");
alert.setHeaderText("Look, a Confirmation Dialog");
alert.setContentText("Are you ok with this?");

Optional<ButtonType> result2 = alert.showAndWait();
if (result2.get() == ButtonType.OK){
    System.out.println("OK Clicked");
} else {
    System.out.println("Other Clicked");
}

// MessageBox with Buttons

Alert alert = new Alert(AlertType.CONFIRMATION);

alert.setTitle("Confirmation Dialog");

alert.setHeaderText("Look, a Confirmation Dialog");

alert.setContentText("Are you ok with this?");

Optional<ButtonType> result2 = alert.showAndWait();

if (result2.get() == ButtonType.OK){

System.out.println("OK Clicked");

} else {

System.out.println("Other Clicked");

}

GUI Output:

Confirmation Box with four options

// Messagebox with many buttons
Alert alertmessaegmanyoptions = new Alert(AlertType.CONFIRMATION);
alertmessaegmanyoptions.setTitle("Confirmation Dialog with Custom Actions");
alertmessaegmanyoptions.setHeaderText("Look, a Confirmation Dialog with Custom Actions");
alertmessaegmanyoptions.setContentText("Choose your option.");
ButtonType buttonTypeOne = new ButtonType("Ubuntu", ButtonData.HELP_2);
ButtonType buttonTypeTwo = new ButtonType("Debian");
ButtonType buttonTypeThree = new ButtonType("Windows");
ButtonType buttonTypeCancel = new ButtonType("Cancel", ButtonData.CANCEL_CLOSE);
alert.getButtonTypes().setAll(buttonTypeOne, buttonTypeTwo, buttonTypeThree, buttonTypeCancel);
Optional<ButtonType> result3 = alert.showAndWait();
if (result3.get() == buttonTypeOne){
    System.out.println("Ubuntu Clicked");

} else if (result3.get() == buttonTypeTwo) {
    System.out.println("Debian Clicked");

} else if (result3.get() == buttonTypeThree) {
    System.out.println("Windows Clicked");

} else if (result3.get() == buttonTypeCancel) {
    System.out.println("Cancel Clicked");

} else {
    System.out.println("Nothing Clicked");
}

// Messagebox with many buttons

Alert alertmessaegmanyoptions = new Alert(AlertType.CONFIRMATION);

alertmessaegmanyoptions.setTitle("Confirmation Dialog with Custom Actions");

alertmessaegmanyoptions.setHeaderText("Look, a Confirmation Dialog with Custom Actions");

alertmessaegmanyoptions.setContentText("Choose your option.");

ButtonType buttonTypeOne = new ButtonType("Ubuntu", ButtonData.HELP_2);

ButtonType buttonTypeTwo = new ButtonType("Debian");

ButtonType buttonTypeThree = new ButtonType("Windows");

ButtonType buttonTypeCancel = new ButtonType("Cancel", ButtonData.CANCEL_CLOSE);

alert.getButtonTypes().setAll(buttonTypeOne, buttonTypeTwo, buttonTypeThree, buttonTypeCancel);

Optional<ButtonType> result3 = alert.showAndWait();

if (result3.get() == buttonTypeOne){

System.out.println("Ubuntu Clicked");

} else if (result3.get() == buttonTypeTwo) {

System.out.println("Debian Clicked");

} else if (result3.get() == buttonTypeThree) {

System.out.println("Windows Clicked");

} else if (result3.get() == buttonTypeCancel) {

System.out.println("Cancel Clicked");

} else {

System.out.println("Nothing Clicked");

}

GUI Output:

Encrypt, Base64, AES/CBC/SHA-256 Encryption and Decrypt

fyi: Encrypt and Decrypt functions are above.

String sInputString = result.get().toString();
String sInputStringBas64 = Base64.getEncoder().encodeToString(sInputString.getBytes());
String sEncryptionKey = "pa$$w1rd1";

try {
    byte[] encrypted = encrypt(sInputStringBas64, sEncryptionKey);

    String sEncryptedText = new String(encrypted, StandardCharsets.UTF_8);
    System.out.println(sEncryptedText);

    try {
        String sDecryptedText = decrypt(encrypted, sEncryptionKey);
        System.out.println("decrypted: " + sDecryptedText);

        byte[] sbbase64EncryptedDecodedString = Base64.getMimeDecoder().decode(sDecryptedText);
        String sbase64EncryptedDecodedString = new String(sbbase64EncryptedDecodedString);

        // Encryption Message Box
        Alert encryptionmessagebox = new Alert(AlertType.INFORMATION);
        encryptionmessagebox.setTitle("Encryption");
        encryptionmessagebox.setHeaderText(null);
        encryptionmessagebox.setContentText("Input String:\n" + sInputString
                        + "\n\n  Input as Base64:\n   " + sInputStringBas64
                        + "\n\n  Encryption Key:\n  " + sEncryptionKey
                        + "\n\n  Encryption Method:\n  AES/CBC/PKCS5Padding SHA-256 IV"
                        + "\n\n    Encrypted Text:\n    " + sEncryptedText
                        + "\n\n  Decrypted Text:\n  " + sDecryptedText
                        + "\n\nDecoded Base64:\n" + sbase64EncryptedDecodedString
        );
        encryptionmessagebox.showAndWait();
    }
    catch (Exception ee)
    {
        ee.printStackTrace();
    }
}
catch (Exception ex2)
    {
        ex2.printStackTrace();
    }

String sInputString = result.get().toString();

String sInputStringBas64 = Base64.getEncoder().encodeToString(sInputString.getBytes());

String sEncryptionKey = "pa$$w1rd1";

try {

byte[] encrypted = encrypt(sInputStringBas64, sEncryptionKey);

String sEncryptedText = new String(encrypted, StandardCharsets.UTF_8);

System.out.println(sEncryptedText);

try {

String sDecryptedText = decrypt(encrypted, sEncryptionKey);

System.out.println("decrypted: " + sDecryptedText);

byte[] sbbase64EncryptedDecodedString = Base64.getMimeDecoder().decode(sDecryptedText);

String sbase64EncryptedDecodedString = new String(sbbase64EncryptedDecodedString);

// Encryption Message Box

Alert encryptionmessagebox = new Alert(AlertType.INFORMATION);

encryptionmessagebox.setTitle("Encryption");

encryptionmessagebox.setHeaderText(null);

encryptionmessagebox.setContentText("Input String:\n" + sInputString

+ "\n\n Input as Base64:\n " + sInputStringBas64

+ "\n\n Encryption Key:\n " + sEncryptionKey

+ "\n\n Encryption Method:\n AES/CBC/PKCS5Padding SHA-256 IV"

+ "\n\n Encrypted Text:\n " + sEncryptedText

+ "\n\n Decrypted Text:\n " + sDecryptedText

+ "\n\nDecoded Base64:\n" + sbase64EncryptedDecodedString

);

encryptionmessagebox.showAndWait();

}

catch (Exception ee)

{

ee.printStackTrace();

}

catch (Exception ex2)

{

ex2.printStackTrace();

}

GUI Output:

Credits

Encryption Help: https://proandroiddev.com/security-best-practices-symmetric-encryption-with-aes-in-java-7616beaaade9

Dialogue Help: https://code.makery.ch/blog/javafx-dialogs-official/

General JavaFX Help: http://tutorials.jenkov.com/javafx/index.html

Ini File Help: Simple Java API Windows style .ini file handling. Also provide Java Preferences API
functionality on top of .ini file. https://sourceforge.net/projects/ini4j/

SSH JScH Help – JSch is a pure Java implementation of SSH2: http://www.jcraft.com/jsch/

JSch 0.0.* was released under the GNU LGPL license. Later, we have switched
over to a BSD-style license.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.

2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the distribution.

3. The names of the authors may not be used to endorse or promote products
derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED AS IS” AND ANY EXPRESSED OR IMPLIED WARRANTIES,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JCRAFT,
INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
——————————————————————————

——————————————————————————

I hope this guide helps someone.

Please consider using my referral code and get $25 UpCloud VM credit if you need to create a server online.

https://www.upcloud.com/register/?promo=D84793

Ask a question or recommend an article

Revision History

v1.0 Initial Post

Using OWASP ZAP GUI to scan your Applications for security issues

March 17, 2018 by Simon

OWASP is a non-profit that lists the Top Ten Most Critical Web Application Security Risks, they also have a GUI Java tool called OWASP Zap that you can use to check your apps for security issue.

I have a number of guides on moving hosting away form CPanel , Setting up VM’s on AWS, Vultr or Digital Ocean along with installing and managing WordPress from the command line. It is important that you always update your site and software and test your sites and software for vulnerabilities. Zap is free and completely open source.

Disclaimer, I am not an expert (this Zap post and my past Kali Linux guide will be updated as I learn more).

OWASP Top 10

OWASP has a top 10 list of things to review.

Download the OWASP 10 10 Application security risks PDF here form here.

Using the free OWASP Zap Tool

Snip from https://www.owasp.org/index.php/OWASP_Zed_Attack_Proxy_Project

“The OWASP Zed Attack Proxy (ZAP) is one of the world’s most popular free security tools and is actively maintained by hundreds of international volunteers*. It can help you automatically find security vulnerabilities in your web applications while you are developing and testing your applications. It’s also a great tool for experienced pentesters to use for manual security testing.”

Zap Overview

Here is a quick demo of Zap in action.

Do check out the official Zap videos on youtube: https://www.youtube.com/user/OWASPGLOBAL/videos if you want to learn more.

Installing Zap

Download Zap from here.

Download Options

Download contents

Copy to the app to the OSX Application folder

App Installed

Open OSX’s Privacy and Security screen and click Open Anyway

OWASP Zap is now Installed

Ready for a Scan

But before we do let’s check out the Options

OWASP Zap allows you to label reports to ad from anyone you want.

Now let’s update the program and plugins, Click Manage Add-ons

Click Update All to Update addons

I clicked Update All

Installed some plugins

Zap is Ready

Add a site and right click on the site and you can perform an active scan or port scan.

First Scan (https failed)

I enabled unsafe SSL/TLS Renegotiation.

This did not work and this guide said I needed to install the “Java Cryptography Extension (JCE) Unlimited Strength Jurisdiction Policy Files” from here.

The extract files to /Library/Java/JavaVirtualMachines/%your_jdk%/Contents/Home/jre/lib/security

I restarted OWASP Zap and tried to scan my site buy it appears Cloudflare (that I recently set up) was blocking my scans and reported error 403. I decided to scan another site of mine that was not on Cloudflare but had the same Lets Encrypt style SSL cert.

fyi: I own and set up the site I queried below.

OWASP Zap scan performed over 800 requests and tried traversal exploits and many other checks. Do repair any major failures you find.

Generating a Report

To generate a report click Report then the appropriate generation menu of choice.

FYI: The High Priority Alert is a false positive with an HTML item being mistaken for a CC number.

I hope this guide helps someone. Happy software/server hardening and good luck.

More Reading

Check out my Kali Linux guide.

Ask a question or recommend an article

Revision History

V1.3 fixed hasting typo.

v1.2 False Positive

v1.1 updated main features

v1.0 Initial post

PHP 7 code to send object oriented sanitised input data via bound parameters to a MYSQL database

November 1, 2017 by Simon

Sanitising user input is a golden rule with web developing (see https://www.owasp.org/index.php/Input_Validation_Cheat_Sheet ), here is my code snippet to sanitise and parameterise MySQL queries in PHP 7.0.

First, watch and follow @jawache (Asim Hussein) demo how common hacks happen and why you should update and patch software often, sanitise user data and set up a firewall.

I have blogged before on how to set up a Vultr server and configure it, How to secure Ubuntu in the Cloud, How to run an Ubuntu System Audit and Beyond SSL with Content Security Policy, Public Key Pinning etc but a 100% secure server is impossible as zero-day exploits and flaws (e.g WPA WiFi) reminds us how limited technology lifespans can be. Yes, you can setup firewalls on Ubuntu and WordPress but you are only one exploit away from being hacked.Below is my code snippet (in PHP) to sanitise incoming data, query a MySQL database with object-oriented calls in PHP 7.0 and return data in variables. I have set up a firewall to block access to MySQL and non-essential ports (use https://www.shodan.io/ to test your server’s ports). I was using older deprecated PHP 5 era database calls and I researched newer calls available in PHP 7.0.

When you log in to an Ubuntu server and it says the following you should update

89 packages can be updated.
35 updates are security updates.

1 2	89 packages can be updated. 35 updates are security updates.

Also update software, node, npm etc

This code outputs too much information but will help you setup and get data on your servers (as long as you replace your database, table and field names).

<?php
echo "Last modified: " . date ("F d Y H:i:s.", getlastmod()) . "<br /><br />";
date_default_timezone_set('Australia/Sydney');

$dbhost = '127.0.0.1';
$dbusername = 'themysqlaccount';
$dbpassword = 'themysqlpassword';
$dbname = 'thedatabasename';
$con = mysqli_connect($dbhost, $dbusername, $dbpassword, $dbname);

//Debug stuff
//echo var_dump($con);
//printf(" - Error: %s.\n", $stmt->error);

if($con->connect_errno > 0){
    printf(" - Error: %s.\n", $stmt->error);
    die("Error: Unable to connect to MySQL (E001)");
} else {
 echo "Charset set to utf8<br />";
 mysqli_set_charset($con,"utf8");
}

if (!$con) {
    echo "Error: Unable to connect to MySQL (E002)" . PHP_EOL;
    echo "Debugging errno: " . mysqli_connect_errno() . PHP_EOL;
    echo "Debugging error: " . mysqli_connect_error() . PHP_EOL;
    exit;
} else {
    echo "Database Connection OK<br />";

    echo "&nbsp; Success: A proper connection to MySQL was made! The my_db database is great." . PHP_EOL . "<br />";
    echo "&nbsp; &nbsp;- Host information: " . mysqli_get_host_info($con) . PHP_EOL . "<br />";
    echo "&nbsp; &nbsp;- Server Info: '" . mysqli_get_server_info($con) . "'<br />";
    echo "&nbsp; &nbsp;- Server Protocol Info : ". mysqli_get_proto_info($con) . "<br />";
    echo "&nbsp; &nbsp;- Server Version: " . mysqli_get_server_version($con) . "<br />";
    //echo " - Server Connection Stats: " . print_r(mysqli_get_connection_stats($con)) . "<br />";
    echo "&nbsp; &nbsp;- Client Version: " . mysqli_get_client_version($con) . "<br />";
    echo "&nbsp; &nbsp;- Client Info: '" . mysqli_get_client_info() . "'<br />";

echo "Ready to Query the database '$dbname'.<br />";

// Input Var's that are parameterized/bound into the query statement
// I pre fill three vaiables with known fields in my users table
// Goot article in manual sanitization of strings in PHP http://php.net/manual/en/filter.filters.sanitize.php
    $in_username = mysqli_real_escape_string($con, 'FearTec');
    $in_f_guid = mysqli_real_escape_string($con, '5161a571-4a51-468d-9e96-6a5db5d35b1c');
    $in_mobile = mysqli_real_escape_string($con,'0456629533');

// Output Var's that the query fills after querying the database
// These variables will be filled with data from the current returned row
    $out_id = "";
    $out_f_guid = "";
    $out_username = "";
    $out_mobile = "";

echo "1. About to query the database: '$dbname'<br />";
$stmt = mysqli_stmt_init($con);
if (mysqli_stmt_prepare($stmt,"SELECT id, username, guid, user_mobile FROM thedatabasename WHERE username = ? AND guid = ? AND user_mobile = ?")) {

        echo "2. Query Returned<br />";

        /*
            Type specification chars
            Character   Description
            i   corresponding variable has type integer
            d   corresponding variable has type double
            s   corresponding variable has type string
            b   corresponding variable is a blob and will be sent in packets
        */
        mysqli_stmt_bind_param($stmt, 'sss', $in_username, $in_guid, $in_mobile);

        mysqli_stmt_execute($stmt);

        mysqli_stmt_bind_result($stmt, $out_id, $out_username, $out_guid, $out_mobile);

        mysqli_stmt_fetch($stmt);

        // Do something with the 1st returned row        
        echo " - Row: ID: $out_id, GUID: $out_guid, USR: $out_username, MOB: $out_mobile";//
        // Do we have more rows to process
        while($stmt->fetch()) { 
                // Deal with other rows
                echo " - Row: ID: $out_id, GUID: $out_f_guid, USR: $out_username, MOB: $out_mobile<br />";
        }
        mysqli_stmt_close($stmt);
        
        echo "c<br />";
    }
     else {
        echo "3. Error Querying<br/>";
        printf(" - Error: %s.\n", $stmt->error);
    }

}    

?>

<?php

echo "Last modified: " . date ("F d Y H:i:s.", getlastmod()) . " ";

date_default_timezone_set('Australia/Sydney');

$dbhost = '127.0.0.1';

$dbusername = 'themysqlaccount';

$dbpassword = 'themysqlpassword';

$dbname = 'thedatabasename';

$con = mysqli_connect($dbhost, $dbusername, $dbpassword, $dbname);

//Debug stuff

//echo var_dump($con);

//printf(" - Error: %s.\n", $stmt->error);

if($con->connect_errno > 0){

printf(" - Error: %s.\n", $stmt->error);

die("Error: Unable to connect to MySQL (E001)");

} else {

echo "Charset set to utf8 ";

mysqli_set_charset($con,"utf8");

}

if (!$con) {

echo "Error: Unable to connect to MySQL (E002)" . PHP_EOL;

echo "Debugging errno: " . mysqli_connect_errno() . PHP_EOL;

echo "Debugging error: " . mysqli_connect_error() . PHP_EOL;

exit;

} else {

echo "Database Connection OK ";

echo "  Success: A proper connection to MySQL was made! The my_db database is great." . PHP_EOL . " ";

echo "   - Host information: " . mysqli_get_host_info($con) . PHP_EOL . " ";

echo "   - Server Info: '" . mysqli_get_server_info($con) . "' ";

echo "   - Server Protocol Info : ". mysqli_get_proto_info($con) . " ";

echo "   - Server Version: " . mysqli_get_server_version($con) . " ";

//echo " - Server Connection Stats: " . print_r(mysqli_get_connection_stats($con)) . " ";

echo "   - Client Version: " . mysqli_get_client_version($con) . " ";

echo "   - Client Info: '" . mysqli_get_client_info() . "' ";

echo "Ready to Query the database '$dbname'. ";

// Input Var's that are parameterized/bound into the query statement

// I pre fill three vaiables with known fields in my users table

// Goot article in manual sanitization of strings in PHP http://php.net/manual/en/filter.filters.sanitize.php

$in_username = mysqli_real_escape_string($con, 'FearTec');

$in_f_guid = mysqli_real_escape_string($con, '5161a571-4a51-468d-9e96-6a5db5d35b1c');

$in_mobile = mysqli_real_escape_string($con,'0456629533');

// Output Var's that the query fills after querying the database

// These variables will be filled with data from the current returned row

$out_id = "";

$out_f_guid = "";

$out_username = "";

$out_mobile = "";

echo "1. About to query the database: '$dbname' ";

$stmt = mysqli_stmt_init($con);

if (mysqli_stmt_prepare($stmt,"SELECT id, username, guid, user_mobile FROM thedatabasename WHERE username = ? AND guid = ? AND user_mobile = ?")) {

echo "2. Query Returned ";

Type specification chars

Character Description

i corresponding variable has type integer

d corresponding variable has type double

s corresponding variable has type string

b corresponding variable is a blob and will be sent in packets

mysqli_stmt_bind_param($stmt, 'sss', $in_username, $in_guid, $in_mobile);

mysqli_stmt_execute($stmt);

mysqli_stmt_bind_result($stmt, $out_id, $out_username, $out_guid, $out_mobile);

mysqli_stmt_fetch($stmt);

// Do something with the 1st returned row

echo " - Row: ID: $out_id, GUID: $out_guid, USR: $out_username, MOB: $out_mobile";//

// Do we have more rows to process

while($stmt->fetch()) {

// Deal with other rows

echo " - Row: ID: $out_id, GUID: $out_f_guid, USR: $out_username, MOB: $out_mobile ";

}

mysqli_stmt_close($stmt);

echo "c ";

}

else {

echo "3. Error Querying ";

printf(" - Error: %s.\n", $stmt->error);

}

Returned Data

Last modified: November 01 2017 16:43:01.
Charset set to utf8
Database Connection OK
  Success: A proper connection to MySQL was made! The my_db database is great. 
   - Host information: 127.0.0.1 via TCP/IP 
   - Server Info: '5.7.19-0ubuntu0.16.04.1'
   - Server Protocol Info : 10
   - Server Version: 50719
   - Client Version: 50012
   - Client Info: 'mysqlnd 5.0.12-dev - 20150407 - $Id: b5######################## $'
Ready to Query the database 'thedatabasename'.
1. About to query the database: 'thedatabasename'
2. Query Returned
- Row: ID: 1, GUID: 0000000-0000-0000-0000-000000000001, USR: Bob, MOB: 1234567890
- Row: ID: 2, GUID: 0000000-0000-0000-0000-000000000002, USR: Joe, MOB: 1234567891
- Row: ID: 3, GUID: 0000000-0000-0000-0000-000000000003, USR: Jane, MOB: 1234567892

Last modified: November 01 2017 16:43:01.

Charset set to utf8

Database Connection OK

Success: A proper connection to MySQL was made! The my_db database is great.

- Host information: 127.0.0.1 via TCP/IP

- Server Info: '5.7.19-0ubuntu0.16.04.1'

- Server Protocol Info : 10

- Server Version: 50719

- Client Version: 50012

- Client Info: 'mysqlnd 5.0.12-dev - 20150407 - $Id: b5######################## $'

Ready to Query the database 'thedatabasename'.

1. About to query the database: 'thedatabasename'

2. Query Returned

- Row: ID: 1, GUID: 0000000-0000-0000-0000-000000000001, USR: Bob, MOB: 1234567890

- Row: ID: 2, GUID: 0000000-0000-0000-0000-000000000002, USR: Joe, MOB: 1234567891

- Row: ID: 3, GUID: 0000000-0000-0000-0000-000000000003, USR: Jane, MOB: 1234567892

Variable Bind Parameter Types

When you bind an incoming variable you can inform MySQL what the data type is expected to be.

mysqli_stmt_bind_param: Type specification chars
Character   Description
i   corresponding variable has type integer
d   corresponding variable has type double
s   corresponding variable has type string
b   corresponding variable is a blob and will be sent in packets

mysqli_stmt_bind_param: Type specification chars

Character Description

i corresponding variable has type integer

d corresponding variable has type double

s corresponding variable has type string

b corresponding variable is a blob and will be sent in packets

Debug Options

Errors Enabled: Turn on PHP Debug Errors On

Turning on errors on production servers is bad but on on development.

First, find php.ini files

locate php.ini
/php.ini.bak
/.c9/metadata/workspace/etc/php/7.0/fpm/php.ini
/etc/php/7.0/apache2/php.ini
/etc/php/7.0/cli/php.ini
/etc/php/7.0/fpm/php.ini
/etc/php/7.0/phpdbg/php.ini
/usr/lib/php/7.0/php.ini-development
/usr/lib/php/7.0/php.ini-production
/usr/lib/php/7.0/php.ini-production.cli

locate php.ini

/php.ini.bak

/.c9/metadata/workspace/etc/php/7.0/fpm/php.ini

/etc/php/7.0/apache2/php.ini

/etc/php/7.0/cli/php.ini

/etc/php/7.0/fpm/php.ini

/etc/php/7.0/phpdbg/php.ini

/usr/lib/php/7.0/php.ini-development

/usr/lib/php/7.0/php.ini-production

/usr/lib/php/7.0/php.ini-production.cli

Edit your appropriate PHP file

sudo nano /etc/php/7.0/fpm/php.ini

1	sudo nano /etc/php/7.0/fpm/php.ini

And turn on Error reporting.

Restart PHP and NGINX

sudo /etc/init.d/php7.0-fpm restart
sudo /etc/init.d/nginx restart

1 2	sudo /etc/init.d/php7.0-fpm restart sudo /etc/init.d/nginx restart

If you need to view your active php.ini file or see php configuration settings, add this to a .php file on your web server and view it’s contents.

<?php
phpinfo()
?>

<?php

phpinfo()

It is amazing how clear errors can be

Dump Connection Vars: PHP mysqli_connect: var_dump($con)

echo var_dump($con);

1	echo var_dump($con);

Output:

  public 'affected_rows' => int 0
  public 'client_info' => string 'mysqlnd 5.0.12-dev - 20150407 - $Id: b5###############################3 $' (length=79)
  public 'client_version' => int 50012
  public 'connect_errno' => int 0
  public 'connect_error' => null
  public 'errno' => int 0
  public 'error' => string '' (length=0)
  public 'error_list' => 
    array (size=0)
      empty
  public 'field_count' => int 0
  public 'host_info' => string '127.0.0.1 via TCP/IP' (length=20)
  public 'info' => null
  public 'insert_id' => int 0
  public 'server_info' => string '5.7.19-0ubuntu0.16.04.1' (length=23)
  public 'server_version' => int 50719
  public 'stat' => string 'Uptime: 1828089  Threads: 1  Questions: 15702  Slow queries: 0  Opens: 1529  Flush tables: 1  Open tables: 1461  Queries per second avg: 0.008' (length=142)
  public 'sqlstate' => string '00000' (length=5)
  public 'protocol_version' => int 10
  public 'thread_id' => int 7367
  public 'warning_count' => int 0

public 'affected_rows' => int 0

public 'client_info' => string 'mysqlnd 5.0.12-dev - 20150407 - $Id: b5###############################3 $' (length=79)

public 'client_version' => int 50012

public 'connect_errno' => int 0

public 'connect_error' => null

public 'errno' => int 0

public 'error' => string '' (length=0)

public 'error_list' =>

array (size=0)

empty

public 'field_count' => int 0

public 'host_info' => string '127.0.0.1 via TCP/IP' (length=20)

public 'info' => null

public 'insert_id' => int 0

public 'server_info' => string '5.7.19-0ubuntu0.16.04.1' (length=23)

public 'server_version' => int 50719

public 'stat' => string 'Uptime: 1828089 Threads: 1 Questions: 15702 Slow queries: 0 Opens: 1529 Flush tables: 1 Open tables: 1461 Queries per second avg: 0.008' (length=142)

public 'sqlstate' => string '00000' (length=5)

public 'protocol_version' => int 10

public 'thread_id' => int 7367

public 'warning_count' => int 0

Show Environment Vars: mysqli_get_host_info, mysqli_get_proto_info, mysqli_get_server_version, mysqli_get_client_version and mysqli_get_client_info.

echo "&nbsp; Success: Database connection OK." . PHP_EOL . "<br />";
echo "&nbsp; &nbsp;- Host information: " . mysqli_get_host_info($con) . PHP_EOL . "<br />";
echo "&nbsp; &nbsp;- Server Info: '" . mysqli_get_server_info($con) . "'<br />";
echo "&nbsp; &nbsp;- Server Protocol Info : ". mysqli_get_proto_info($con) . "<br />";
echo "&nbsp; &nbsp;- Server Version: " . mysqli_get_server_version($con) . "<br />";
//echo " - Server Connection Stats: " . print_r(mysqli_get_connection_stats($con)) . "<br />";
echo "&nbsp; &nbsp;- Client Version: " . mysqli_get_client_version($con) . "<br />";
echo "&nbsp; &nbsp;- Client Info: '" . mysqli_get_client_info() . "'<br />";

echo "  Success: Database connection OK." . PHP_EOL . " ";

echo "   - Host information: " . mysqli_get_host_info($con) . PHP_EOL . " ";

echo "   - Server Info: '" . mysqli_get_server_info($con) . "' ";

echo "   - Server Protocol Info : ". mysqli_get_proto_info($con) . " ";

echo "   - Server Version: " . mysqli_get_server_version($con) . " ";

//echo " - Server Connection Stats: " . print_r(mysqli_get_connection_stats($con)) . " ";

echo "   - Client Version: " . mysqli_get_client_version($con) . " ";

echo "   - Client Info: '" . mysqli_get_client_info() . "' ";

Output:

  Success: Database connection OK. 
   - Host information: 127.0.0.1 via TCP/IP 
   - Server Info: '5.7.19-0ubuntu0.16.04.1'
   - Server Protocol Info : 10
   - Server Version: 50719
   - Client Version: 50012
   - Client Info: 'mysqlnd 5.0.12-dev - 20150407 - $Id: b5######################################## $'

Success: Database connection OK.

- Host information: 127.0.0.1 via TCP/IP

- Server Info: '5.7.19-0ubuntu0.16.04.1'

- Server Protocol Info : 10

- Server Version: 50719

- Client Version: 50012

- Client Info: 'mysqlnd 5.0.12-dev - 20150407 - $Id: b5######################################## $'

Show errors in failed if statements: mysqli_stmt_prepare else

printf(" - Error: %s.\n", $stmt->error);

1	printf(" - Error: %s.\n", $stmt->error);

Output:

Error: Table 'thedatabasename.invalidtablename' doesn't exist.

1	Error: Table 'thedatabasename.invalidtablename' doesn't exist.

Debugging is your friend.

More to come..

Donate and make this blog better

Ask a question or recommend an article

V 1.0 initial post

Short (Article):

Personal Development Blog...

Coding for fun since 1996, Learn by doing and sharing.

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"If you're not still learning, you're already dying."
- Ryan Holiday - Ego is the Enemy

Follow me on Twitter: @FearbySoftware

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Code

Useful Java FX Code I use in a project using IntelliJ IDEA and jdk1.8.0_161.jdk

Using OWASP ZAP GUI to scan your Applications for security issues

PHP 7 code to send object oriented sanitised input data via bound parameters to a MYSQL database

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