Hello and welcome to my cryptology channel!
I am Nils, a cryptology maniac and specialist.

Currently, I lead the development of the open-source software CrypTool 2. In my professional life, I work as a professor at the Hochschule Niederrhein (University of Applied Sciences) and the Cyber Campus NRW in the realm of IT security. Previously, I worked as a post-doc at the University of Siegen in the DECRYPT project, where we collected, analyzed, and decrypted historical ciphertexts from around the world.

On this YouTube channel, you learn about cryptology = cryptography (making codes/ciphers) and cryptanalysis (breaking codes/ciphers). From the Zodiac Killer's ciphers to the famous Enigma. From modern AES to RSA. If you are interested in secret codes, subscribe to this channel!

Discord: https://discord.gg/xGGAehgJ
Blog: https://www.kopaldev.de/
My Ethereum address for tip: 0x0777390782b6421172403a56b7997C1facAfCF42

Imprint: https://www.kopaldev.de/imprint

Breaking the M-209 Cipher Machine using Machine Learning in a Known-Plaintext Scenario
19:11
Breaking the M-209 Cipher Machine using Machine Learning in a Known-Plaintext Scenario
Introduction to Cloud Forensics (Full Lecture Video)
48:25
Introduction to Cloud Forensics (Full Lecture Video)
The Chinese Cipher ShāngMì 4 (SM4, 商密4) Explained
17:27
The Chinese Cipher ShāngMì 4 (SM4, 商密4) Explained
Introduction to Malware and Malware Analysis (Full Lecture Video)
44:18
Introduction to Malware and Malware Analysis (Full Lecture Video)
How a 1674 Encrypted Letter Traveled 10,000 km
18:48
How a 1674 Encrypted Letter Traveled 10,000 km
How We Broke the Ciphers of Holy Roman Emperor Maximilian II
27:25
How We Broke the Ciphers of Holy Roman Emperor Maximilian II
The Affine Cipher – A Mathematical Substitution Cipher
15:35
The Affine Cipher – A Mathematical Substitution Cipher
The German SZ42 Cipher Machine Explained
32:13
The German SZ42 Cipher Machine Explained
Introduction to Memory Forensics (Full Lecture Video)
42:25
Introduction to Memory Forensics (Full Lecture Video)
The Grandpré Cipher Explained
14:35
The Grandpré Cipher Explained
The Simplified Advanced Encryption Standard (S-AES) Explained
21:02
The Simplified Advanced Encryption Standard (S-AES) Explained
Digital File Signatures – How Do They Protect Your Computer?
17:25
Digital File Signatures – How Do They Protect Your Computer?
ElsieFour – A Low-Tech Cipher Inspired by RC 4
15:14
ElsieFour – A Low-Tech Cipher Inspired by RC 4
How To Install and Use CrypTool 2 in Linux
15:26
How To Install and Use CrypTool 2 in Linux
CrypTool 2 Highlights of the Last Three Years – CrypTool Symposium 2023 in Munich
26:56
CrypTool 2 Highlights of the Last Three Years – CrypTool Symposium 2023 in Munich
Huffman Code Explained – An Optimal Prefix Code
14:26
Huffman Code Explained – An Optimal Prefix Code
The British Typex Cipher Machine Explained
22:36
The British Typex Cipher Machine Explained
The GRANIT/160 Cipher Explained – A GDR Stasi Spy Cipher
25:28
The GRANIT/160 Cipher Explained – A GDR Stasi Spy Cipher
Deciphering Mary Stuart's Lost Letters – A Talk Given by George Lasry
38:20
Deciphering Mary Stuart's Lost Letters – A Talk Given by George Lasry
The Bazeries Cipher Explained – A Classical Cipher Based on Substitution and Transposition
13:21
The Bazeries Cipher Explained – A Classical Cipher Based on Substitution and Transposition
The Four-Square Cipher Explained
15:03
The Four-Square Cipher Explained
The Stream Cipher Trivium Explained
21:57
The Stream Cipher Trivium Explained
The Josse Cipher – A French Army Cipher from the late 19th Century
18:40
The Josse Cipher – A French Army Cipher from the late 19th Century
The Trifid Cipher Explained
14:26
The Trifid Cipher Explained
Easily Share Your Contact via a QR Code – How to Create vCards with CrypTool 2
9:56
Easily Share Your Contact via a QR Code – How to Create vCards with CrypTool 2
The Bifid Cipher Explained
13:34
The Bifid Cipher Explained
The Book Cipher Explained – Encryption & Decryption Using a Book
15:13
The Book Cipher Explained – Encryption & Decryption Using a Book
The Soviet/Russian Block Cipher GOST Magma Explained
24:09
The Soviet/Russian Block Cipher GOST Magma Explained
Three Years Cryptography for Everybody
11:52
Three Years Cryptography for Everybody
The Syllabary Cipher Explained
21:41
The Syllabary Cipher Explained