Chapter 1 of 10 · Cryptography 10%

🔓 That 'encrypted' session cookie? One free tool spells out user=admin;role=root in a second. No key, no cracking, just decoding.

Base64 and hex look scrambled, so people treat them like encryption. They are not: anyone reverses them in seconds. You'll learn to spot and peel encoding layers by hand and with CyberChef, the move every crypto challenge opens with. 🧩

Premium Chapter

Create a free account to access this chapter and start learning with hands-on labs.

Create Free Account

Ready to track your progress?

Create a free account to save your progress, earn XP, and access 170+ hands-on cybersecurity labs.

Start Learning Free

Course Progress

Track your learning journey

0 /10

0 % Complete

10 Remaining

Course Chapters

No chapters found for this filter

Cryptography

🔓 That 'encrypted' session cookie? One free tool spells out user=admin;role=root in a second. No key, no cracking, just decoding.

Premium Chapter

Ready to track your progress?

Course Progress

Course Chapters

Encoding and encryption

Substitution ciphers

The Vigenere cipher

XOR cryptanalysis

Hash functions and collisions

Block cipher modes

RSA fundamentals

RSA attacks

Key exchange and randomness

Cryptography in the wild