Cryptography Basics | Tryhackme Write Up | By jawstar

Jawstar
8 min readOct 28, 2024

CYBER SECURITY 101

Introduction

Cryptography lays the foundation for our digital world. While networking protocols have made it possible for devices spread across the globe to communicate, cryptography has made it possible to trust this communication.

Learning Objectives

Upon completing this room, you will learn the following:

  • Cryptography key terms
  • Importance of cryptography
  • Caesar Cipher
  • Standard symmetric ciphers
  • Common asymmetric ciphers
  • Basic mathematics commonly used in cryptography

Importance of Cryptography

What is the standard required for handling credit card information?

PCI DSS

Plaintext to Ciphertext

We have just introduced several new terms, and we need to learn them to understand any text about cryptography. The terms are listed below:

  • Plaintext is the original, readable message or data before it’s encrypted. It can be a document, an image, a multimedia file, or any other binary data.

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