ctf-writeups

Writeups for CTFs solved by ahmedheltaher

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Lesson 25: Introduction to Cryptography

Lesson Link:
https://cybertalents.com/learn/introduction-to-cybersecurity/lessons/25-introduction-to-cryptography

Introduction

Cryptography is the practice and study of techniques for secure communication in the presence of third parties called adversaries. More generally, cryptography is about constructing and analyzing protocols that prevent third parties or the public from reading private messages; various aspects in information security such as data confidentiality, data integrity, authentication, and non-repudiation are central to modern cryptography. Modern cryptography exists at the intersection of the disciplines of mathematics, computer science, electrical engineering, communication science, and physics. Applications of cryptography include ATM cards, computer passwords, and electronic commerce.

Challenge

Name:
security model


Description:
is a model designed to guide policies for information security within an organization

Solution

The challenge is a simple question, after googling the question, we will find the answer.

Flag

CIA

References