What is Information Encryption? | Information Encryption
Cyber Security Fundamentals

# What is Information Encryption?

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?

Everything was clear?

Section 3. Chapter 1

Course Content

Cyber Security Fundamentals

# What is Information Encryption?

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?