Learn about modern cryptography by solving a series of interactive puzzles and challenges. Get to know the ciphers and protocols that secure the digital world by breaking them.

Learn about the basic substitution cipher and its implementation in cryptography. Explore multiple substitution alphabets and their applications in encryption. Learn about rearranging text elements to create encrypted messages. Understand the mathematical foundations of modern cryptography. © 2025 Ghassan Al-Najjar. All rights reserved.

Cryptography is an indispensable tool for protecting information in computer systems. In this course you will learn the inner workings of cryptographic systems and how to correctly use them in real-world applications.

Learn the fundamentals of cryptography, including encryption, decryption, and cryptographic algorithms, with Khan Academy's Journey Into Cryptography.

Learn about encryption, decryption, and cryptographic protocols. Transform you career with Coursera's online Cryptography courses. Enroll for free, earn a certificate, and build job-ready skills on your schedule. Join today!

Whether a learner is taking a cryptography course online or in person, learning how cryptography works may be followed by an in-depth exploration of cryptographic systems and methodologies and their real world applications.

2024年7月12日 · Protect data with advanced cryptographic techniques. Explore encryption, decryption, and cryptographic protocols. Enhance the security and integrity of information systems. Our Cryptography...

Learn how to exploit common cryptographic flaws, armed with nothing but a little time and your favorite programming language. Forge administrator cookies, recover passwords, and even backdoor your own random number generator. Works everywhere. DRM-free and available in all common formats: Crypto 101 started as a presentation at PyCon 2013.

Learn the essential ideas of cryptography and how to use them to safeguard your data from unauthorized access, alteration, or destruction. Gain the self-assurance to utilize cryptography to safeguard your systems and applications with this free beginner's course on cryptography.

Learn cryptographic techniques of securing data from scratch through this free Introduction to Cryptography course. Comprehend its history, basics, and types and understand cryptographic algorithms through its underlying protocols. This Cryptography course is a good start for learners who desire to learn Cryptography from scratch.