Hybrid Encryption and Decryption Explained: Securing Data with AES-256 and RSA (Step-by-Step Guide)

 

Introduction

Hybrid Encryption Explained: Securing Data with AES-256 and RSA (Step-by-Step Guide)

In the previous post we have seen Advanced Encryption Standards 256. AES256 is a symmetric algorithm used for encryption and decryption based on a shared secret key. Besides secret key, there are other parameters that need to be set for specifying the key bits, the padding bits and the mode of encryption/decryption.

Let’s now dive deeper into the security. So here we are going to discuss the hybrid encryption and decryption process to enhance the security a step further. This process utilizes both Symmetric Key algorithm and Asymmetric Key algorithm and hence the term hybrid. The idea behind the hybrid encryption and decryption is that we use symmetric algorithm to encrypt the data using a secret key. Now, this key needs to be shared with the receiver in order for him to decrypt the data. So, instead of sharing the key in plain text format, this key itself is encrypted using the asymmetric algorithm with the public key of the receiver. Now, no one other than the intended receiver will be able to decrypt the encrypted secret key using his own private key, as his own public key is used to encrypt the secret key.

Why only Symmetric Algorithm AES256 to encrypt the data and RSA to encrypt the shared Key?

Summary of Start Earning Money WIth AI - Free Tools & Business Ideas | Vaibhav Sisinty | FO376 Raj Shamani

Summary of Start Earning Money WIth AI - Free Tools & Business Ideas | Vaibhav Sisinty | FO376 Raj Shamani

Introduction

In this episode of Raj Shamani’s Figuring Out podcast, Vaibhav Sisinty (founder of GrowthSchool) presents practical strategies for leveraging AI to accelerate careers, launch businesses, and streamline content creation.

Key Highlights

AI as a Business Building Block Vaibhav explains how AI empowers solo entrepreneurs to build comprehensive business operations without the need for large teams. Real-world examples illustrate using tools like ChatGPT, Descript, Make.com, Relevance AI, and Google AI to automate everything from planning and content production to marketing and personalized outreach.

The Evolution of AI: From Rule Based Systems to GPT5

Introduction

Artificial Intelligence (AI) has swiftly transcended its futuristic depiction in sci-fi movies to become an integral part of our daily lives. From personalized recommendations on streaming platforms to voice assistants managing our schedules, AI has seamlessly integrated into numerous facets of modern living. The evolution of AI has been a remarkable journey, fundamentally altering how we interact, work, and perceive technology.

Understanding AI's Evolution:

AI's inception traces back to the 1950s when computer scientists initiated research into simulating human intelligence. Initially, AI algorithms were basic, handling logical reasoning and problem-solving. As computational power advanced, so did AI capabilities. Machine learning emerged, enabling systems to learn and improve from data without explicit programming.

AI in Everyday Applications:

Today, AI powers various everyday applications:

Security, Risks and Tips for Credit Cards

Security, Risks and Tips for Credit Cards

In the previous post we have seen the logic behind a 16 digit credit card numbers. Besides learning and understanding the logic behind a 16 digit credit card number and how much vital information those 16 or more digits conveys, it’s also equally important to safeguard that vital information.

Let’s now delve into the security of credit/debit cards, risk associated with credit/debit cards, and yes the use of credit/debit cards i.e., how can you benefit more by using credit/debit cards.

Credit Card Security:

Advanced Encryption Standards 256

INTRODUCTION

AES256 is symmetric key algorithm i.e., same Key is used for both encryption and decryption process.

AES256 is a 256 bits encryption/decryption algorithm that encrypts a plain text into a human unreadable format using an encryption key (Key 256 bits) and initialization vector (IV 128 bits). The Key size should be 256 bits and block size should be 128 bits. It uses Cipher Block Chaining (CBC) mode which introduces feedback. Before each plain text block is encrypted, it is combined with the cipher text of the previous block by a bitwise exclusive OR operation. This ensures that if the plain text contains many identical blocks, they will each encrypt to different cipher text block. The initialization vector (IV) is combined with the plain text block by a bitwise exclusive OR operation before the block is encrypted. If a single bit of a cipher text block is mangled, the corresponding plain text block will also be mangled. The padding mode used is PKCS7 i.e., Public Key Cryptography Standards 7 which consists of a sequence of bytes, each of which is equal to the total number of padding bytes added.

ENCRYPTION

How to split large file into small files on Windows

 INTRODUCTION

Often during development, we require working with flat files which are really large files and at times its really difficult to open these files, and if opened, mostly crashes the application software opening it. Even to process such a large files is not feasible by the system that we develop. The solution is to break such a large file into number of small files and process those small files.

How to break a large file into small files without opening it with fixed number of records in each file?

HOW TO ACHIEVE SERVICE QUALITY

 INTRODUCTION

Quality is not an event, it is an ongoing process. As far as service organisations are concerned, quality is not the responsibility of the quality control department only, rather it is a matter to be taken care of by the entire business system.

The following are the pre-requisites for achieving service quality:

TOP 10 WAYS TO CREATE A BRAND

WHAT IS BRANDING?

According to Philip Kotler, Branding is "a name, term, symbol or design or a combination of them which is intended to identify the goods and services of one seller or a group of sellers and to differentiate them from those of competitors."

So how are you going to create your brand that stands out with those of competitors?

Here are top 10 ways to create a brand:

BEST PROGRAMMING PRACTICES

PART 1

Best Programming Practices

Introduction

This post will discuss the naming conventions and guidelines that will help developers to have maintainable code keeping the consistency throughout. The post is divided into three parts first being the Naming Conventions followed by two others. Naming Conventions are as per the Microsoft Standards.

Chrome Developer Tools

CHROME DEVELOPER TOOLS

Hi Geeks! How are you? Hope you all are doing well, rather I should say you all are coding well! Anyways, just to help you out, writing this post to make coding experience much easier and less time consuming. There are lots of tools available for the developers to code while having a cup of coffee! Some of the tools that might help you during development are available as Google Chrome Extensions that you can directly add to your Google Chrome browser.

Some of them are as: