Cryptography for Dummies Tryhackme Writeup

This is a Writeup of Tryhackme room “Cryptography for Dummies”

Room link: https://tryhackme.com/room/cryptographyfordummies
Note: This room is free

Task 1: Intro

Cryptography is a big topic. We are going to cover the basics, to give you a basic understanding.

It is used by a wide range of applications, almost everywhere in the internet.

Why we need cryptography?

Without encryption communications over the internet will be very insecure, and it would be very easy for someone to see your data. Fortunately this isn’t true, and almost all of the data you get/send over the internet is encrypted and cannot be seen in plain text by someone who got access to it. Now let’s look into cryptography in more detail.

Task 2: Types of cryptography

There are two types of cryptography :

• Symmetric
• Asymmetric

What is symmetric cryptography?

Let’s say Alice wants to send message to Bob, but she doesn’t want to send the message in plain text because anyone can read it.