Encryption is the process of converting plaintext data into a coded format, known as ciphertext, which is unreadable without the proper key to decode it. This ensures that even if the data is intercepted, it cannot be understood by unauthorized parties.

On the other hand, decryption is the reverse process, where the ciphertext is converted back into its original, readable form using the appropriate key.

Node.js, a powerful and popular JavaScript runtime, provides robust tools and libraries that make implementing encryption and decryption straightforward. Whether you're building a web application, handling sensitive data, or developing a secure communication protocol, Node.js has you covered.

In this blog series, we'll explore how to implement various encryption and decryption techniques using Node.js. We'll start with the basics of symmetric and asymmetric encryption, dive into the Node.js crypto module. By the end of this series, you'll have a solid understanding of how to secure data in your Node.js applications and follow best practices to keep your information safe.

Steps to setup Encryption & Decryption in NodeJS Application:

1. Import NodeJS crypto package like:

    import crypto from 'crypto';
   

2. Declare a ENCRYPTION KEY like:

    ENCRYPTION_SECRET_KEY=w8B76RFktrFhNoPBaTS7XalGlvZriizs
   

3. Create Method for Encryption:

    // Method for Encryption.
    const encryption = (plainText) => {
        const key = crypto.createHash('sha512').update(ENCRYPTION_SECRET_KEY).digest('hex').substring(0, 32);
        const iv = crypto.createHash('sha512').update('16').digest('hex').substring(0, 16);
        const cipher = crypto.createCipheriv("aes-256-cbc", key, iv);
        return Buffer.from(
            cipher.update(JSON.stringify(plainText), 'utf8', 'hex') + cipher.final('hex')
        ).toString('base64')
    };
   

4. Create Method for Decryption:

    // Method for Decryption.
    const decryption = (cipherText) => {
        const key = crypto.createHash('sha512').update(ENCRYPTION_SECRET_KEY).digest('hex').substring(0, 32);
        const iv = crypto.createHash('sha512').update('16').digest('hex').substring(0, 16);
        const buff = Buffer.from(cipherText, 'base64')
        const decipher = crypto.createDecipheriv("aes-256-cbc", key, iv)
        return JSON.parse(
            decipher.update(buff.toString('utf8'), 'hex', 'utf8') +
            decipher.final('utf8')
        )
    };
   

   5. Setup Calling Both Methods:

       const plainObject = {
           name: "John Doe",
           age: 30,
           address: {
               street: "123 Main St",
               city: "New York",
               state: "NY"
           }
       };
      
       const cipherText = encryption(plainObject);
       console.log("CipherText :", cipherText);
      
       const plainText = decryption(cipherText);
       console.log("PlainText :", plainText);
      

   6. Run File: node filename.js

   7. Output:

      

Overall Code:

    import crypto from 'crypto';

    const ENCRYPTION_SECRET_KEY = "w8B76RFktrFhNoPBaTS7XalGlvZriizs";

    // Method for Encryption.
    const encryption = (plainText) => {
        const key = crypto.createHash('sha512').update(ENCRYPTION_SECRET_KEY).digest('hex').substring(0, 32);
        const iv = crypto.createHash('sha512').update('16').digest('hex').substring(0, 16);
        const cipher = crypto.createCipheriv("aes-256-cbc", key, iv);
        return Buffer.from(
            cipher.update(JSON.stringify(plainText), 'utf8', 'hex') + cipher.final('hex')
        ).toString('base64')
    };

    // Method for Decryption.
    const decryption = (cipherText) => {
        const key = crypto.createHash('sha512').update(ENCRYPTION_SECRET_KEY).digest('hex').substring(0, 32);
        const iv = crypto.createHash('sha512').update('16').digest('hex').substring(0, 16);
        const buff = Buffer.from(cipherText, 'base64')
        const decipher = crypto.createDecipheriv("aes-256-cbc", key, iv)
        return JSON.parse(
            decipher.update(buff.toString('utf8'), 'hex', 'utf8') +
            decipher.final('utf8')
        )
    };

    const plainObject = {
        name: "John Doe",
        age: 30,
        address: {
            street: "123 Main St",
            city: "New York",
            state: "NY"
        }
    };

    const cipherText = encryption(plainObject);
    console.log("CipherText :", cipherText);

    const plainText = decryption(cipherText);
    console.log("PlainText :", plainText);

If you found this article helpful, don't forget to follow our blog for more insights and tips on Node.js and cybersecurity. Like and share this post with your network to spread the knowledge. Have questions or need further assistance? Contact us today—we're here to help!

As per tweet by Microsoft CEO and Director Satya Nadella

Some Important Points to be noted

Microsoft also provides free upgrade to windows 11 for all its OS user windows 7,windows 8.1,windows 10 that creates more user for latest OS.

Microsoft also says that it will end Support for windows 10 by 2025 and support for Windows 7 is also ended by Microsoft

Features

This newly OS Windows 11 is large upgrade on windows 10 it includes UI changes,Performance optimization and easy to Access.

1. Windows Taskbar

In Windows 11 taskbar is Centrally aligned and the Width is also increased the Centralized taskbar provides immersive experience to the user.

Centered Taskbar (Photo Credit : Microsoft)

2.Improved Minimized App Panel

In windows 11 we can minimize Apps in various inbuilt layout this features improved multitasking

Minimize Panel (Photo Credit : Microsoft)

3.UI and Icons

Windows 11 comes with major upgrade Windows 10 on the basics of UI it provides clean UI with best transparency.

New Setting App (Photo Credit : Microsoft)

It provides Various inbult themes that is responsive to both light and Dark mode

It comes with Rounded Corners and new App icon design

Widgets (Photo Credit : Microsoft)

4.Windows logo and Boot Animation

Windows 11 comes with newly designed Logo and a new Boot Animation with diffrent boot sound

5.Android Apps on Windows 11 (powered by Amazon Apps)

This is one of the best and most demanding features that allows to run Android Apps on windows these apps can be downloaded from Windows Store powered by Amazon Apps

Android Apps on Windows 11 (Photo Credit : Microsoft)

6.Performance

Perforamnce is also increased to wider extent in windows 11 and Security also increased

Others Features

Design Changes : New Transitions, Widgets — Personalized feed, Snap Group

Performance : Windows update 40% smaller, Less Energy Requirement, Most Secure windows

Newly Features : Team integration in windows, Haptics in Pen input, New Windows Store, New Entertainment Section, New on Screen Keyboard.

Minimum System Requirements

Processor : 1 gigahertz (GHz) or faster with 2 or more cores on a compatible 64-bit processor or System on a Chip (SoC)

Memory : 4 GB RAM

Storage : 64 GB or larger storage device

System firmware : UEFI, Secure Boot capable

TPM : Trusted Platform Module (TPM) version 2.0

Graphics card : DirectX 12 compatible graphics / WDDM 2.x

Display : >9” with HD Resolution (720p)

Internet connection : Microsoft account and internet connectivity required for setup for Windows 11 Home

Certain features require specific hardware, see detailed system requirements.

You can also check compatibility of Your PC using PC Health Check app

Click to Download

PC Health Check

How to Upgrade

Microsoft Provides free upgrade from Windows 10,8.1,7 to Windows 11 from Next Week onwards under Windows Insider Program.

# Dev Channel

Ideal for highly technical users. Be the first to access the latest Windows 11 builds earliest in the development cycle with the newest code. There will be some rough edges and low stability.

# Beta Channel

Ideal for early adopters. These Windows 11 builds will be more reliable than builds from our Dev Channel, with updates validated by Microsoft Your feedback has the greatest impact here.

# Release Preview Channel

Ideal if you want to preview fixes and certain key features, plus get optional access to the next version of Windows 10 before it’s generally available to the world. This channel is also recommended for commercial users.

Windows 11 is roll out from next week onwards

If you want to Get Early update for Windows 11 you have to Register yourself on Windows Insider Update and Choose Suitable category.

For Registration for Windows Insider Programs:

1.Go to Setting -> Update & Security -> Windows Insider Programs and Regsiter Yourself by Choosing a suitable category the from next week rolled out occurs.

As per Microsoft

Stable Version of WIndows 11 is set to launch this year between October — November 2021

Beta Version is set to available from next week for all Windows Insider Programs Member (Mostly for Beta Channel)

This Article is created by Rohit Kumar | www.rohitkumar.ml | mail@rohitkumar.ml using Sources from Microsoft

If you want to tell any dispensary mail me @ mail@rohitkumar.ml

Freenom is one and only company in the world that provides free domain (also provide paid domain also).

Freenom offers free domain with only 4 domain name .ml,.tk,.ga,.cf,.gq

These Domain can be purchased free with for 12 months then they can be renewed every year

Freenom also Provides Paid Domain also.

Free Domain Vs Paid Domain

Freenom provides Free Domain with unlimited renewals so that we have to renew domain every 12 months that means Free Domain from Freenom is Lifetime free.

How to Get Free Domain name from Freenom :

1. Go to Freenom and Login using your Credentials.

2.On the Services tab Click on Register a new Domain.

3.Type the Name you want to Get Domain in search box and click on Check Avaibility.

4.The Available Domain List occurs.

5.Choose the Perfect Domain name and Get it Now then item will be added to cart and then Click Checkout.

6.Now confirmation page Occurs then choose Forward this domain(if you want to forward this domain to other site ) and DNS (if you want to use DNS System) from Use your new domain Field and Choose 12 months@Free from period then click continue.

(* can be changed later).

8.Accept Terms and Condition and then click Complete Order then Domain will be added to My Domains under Services tab

Then Update your DNS to Enjoy free Domains lifetime

How to Renew Domains from Freenom:

1.Login into Your Freenom Domain.

2.Choose Renew Domain under Services tab.

3.Now list of all Domain appears with No of days to expire then if you domain is about to expire (14 days before) click Renew the Domain

4.Accept Terms and Conditions and Complete Your Order.

Domain is Successfully Renewed.

You can renew domain 14 Days before expiry date to Prevent Service closure

How to access DNS in Freenom

1.Login into Your Freenom Domain.

2.Choose My Domains under Services tab.

3.Now list of all Domains Appears the choose that Particular Domain and Click Manage Domains.

4.then Click Manage FreeNom DNS

5.Now Add Set Up Records for CNAME, MX, A, AAAA, TXT, LOC, NAPTR, RP as per Your Service and we can also manage multiple record at single time by clicking +More Records and at last click Save Changes.

Note : Freemom does not support wildcards link @

6.And the Enjoy Free Domain

How to Set Forwarding in FreeNom Domain

1.Login into Your Freenom Domain

2.Choose My Domains under Services tab.

3.Now list of all Domains Appears the choose that Particular Domain and Click Manage Domains.

4.Now Hover over Management Tools and Click URL Forwarding.

5.Now Enter Forwarded URL in URL Forwarding Field and choose Forward Mode from Frame ,Redirect and Click Set URL.

Note : there is no SSL certificate available in URL Forwarding

How to change FreeNom Nameservers

1.Login into Your Freenom Domain.

2.Choose My Domains under Services tab.

3.Now list of all Domains Appears the choose that Particular Domain and Click Manage Domains.

4.Now Hover over Management Tools and Click Namerservers.

5.Now Click Custom Namerserver and Enter details and click Set Nameservers.

Now Nameserver is changed then go to that particular service and Manage your domains from there.

How to Register Glue Records in FreeNom

1.Login into Your Freenom Domain.

2.Choose My Domains under Services tab.

3.Now list of all Domains Appears the choose that Particular Domain and Click Manage Domains.

4.Now Hover over Management Tools and Click Register glue records.

5.Now enter hostname and IP Addresses and check it.

How to Cancel Freedomain from FreeNom

1.Login into Your Freenom Domain.

2.Choose My Domains under Services tab.

3.Now list of all Domains Appears the choose that Particular Domain and Click Manage Domains.

4.Now Hover over Management Tools and Click Cancel Domain.

5.Then Click Cancel <domain-name> buttom to cancel domain.

6.Then Domain is cancelled.

Future Scope of FreeDomain from Free

1. We can create free Bussiness Email (using Yandex Mail) from these domains.

2. We can also use these as URL Shortner (using Short.io) from these doamins.

   Limitation of Free Domain by FreeNom

Many services are not available for these Free Domains like Bussiness Emails,URL Shortner and Many More.

For Example:

1. Zoho Free Bussiness Emails does not support these FreeNom Free Domain.

2. Rebrand and Bitly link shortener also not.

This Article is created by Rohit Kumar | www.rohitkumar.ml | mail@rohitkumar.ml

If you want to tell any dispensary mail me @ mail@rohitkumar.ml