Summary  
This chapter covers encryption algorithms, explaining the role of encryption keys and the differences between symmetric and asymmetric encryption methods.

General domain of usage  
Secure communication

**Information Encryption** is a security process that transforms data into a coded format to prevent unauthorized access. This ensures that even if an unauthorized entity gains access to the data, it cannot interpret or use it without the appropriate decryption key. Encryption is a fundamental component of data protection, commonly employed in various applications, including communication, storage, and online transactions.

We have already considered **hashing** - a special type of data encryption. Now let's explore other methods of securing your data using different encryption techniques.



## Encryption Algorithms

**Encryption algorithms** are mathematical procedures used to convert data into a secure, unreadable format.

To understand encryption algorithms, we have to consider one important concept - an **encryption key**. In the realm of encryption, a key is a crucial element that determines how data is transformed and secured. Think of a key as a **digital code, much like a password, that controls the process of encrypting and decrypting information**. There are two primary types of encryption algorithms based on the keys they use:

### Symmetric encryption

 In symmetric encryption, the same key is used for both encryption and decryption. Popular symmetric encryption algorithms include **Advanced Encryption Standard (AES)** and **Data Encryption Standard (DES)**.


### Asymmetric encryption
Asymmetric encryption involves a pair of keys: a public key for encryption and a private key for decryption. The public key can be shared openly, while the private key must be kept secret. Notable asymmetric encryption algorithms include **RSA (Rivest-Shamir-Adleman)** and **Elliptic Curve Cryptography (ECC)**.

What does an encryption key determine in the realm of encryption?

This course is designed to provide participants with a comprehensive introduction to the essential principles and practices of cybersecurity. In today's digital age, where technology is pivotal in every aspect of our lives, understanding and implementing robust cybersecurity measures is paramount.

Discover the essentials of cybersecurity in this section, where we unravel the core concepts. Gain insights into digital threats and learn how to safeguard your online presence. Get ready for a straightforward exploration of the cyber world!

Dive into the dynamic realm of Web Cyber Security, where we demystify the intricate layers of the OSI (Open Systems Interconnection) model. Uncover the vulnerabilities within each OSI block, gaining a profound understanding of the threats that lurk in the digital space. Explore the vital aspects of physical and software protection, arming yourself with the knowledge needed to safeguard web environments against potential risks and ensure robust cyber resilience.

In the digital world, security is crucial to protect sensitive information. Encryption is key in this defense, ensuring data remains private and safe from unauthorized access. Now, we will explore the basics of information encryption, its methods, and its vital role in maintaining the integrity and privacy of digital communication. 

What is Information Encryption?

What is Information Encryption?