What is a manger in cryptography

Cryptology - teaching material

Cryptology = cryptography + cryptanalysis

Transposition using the example of Skytale

Monoalphabetic encryption using the Caesar method as an example

Polyalphabetic encryption using the example of Vigenére

Modern symmetrical procedures

Asymmetrical procedure

The Kerkhoff principle

Material in general

  • Introduction to cryptology (link to the PDF file by Tino Hempel)
  • Algorithms and materials for cryptography at OSZ Handel 1
  • Materials on cryptology in the public area of ​​the BSCW of the Open German School Network
    Contributions from Schulz / Witten: i.a. RSA and Co
  • CrypTool - a free e-learning program for Windows, MAC and LINUX
    there are several versions:
    • Cryptool1 and 2 for Windows for download
    • JCrypTool (JCT) as a cross-platform Java application (LINUX, MAC, Windows)
    • CrypTool-Online (CTO) as online version in the browser (functions partly not available or limited compared to the other tools)
  • The CrypTool book (link to the PDF file)
    Learn and use cryptography with CrypTool and SageMath. Background material and additional information on the free e-learning crypto program CrypTool (cryptography, mathematics and more). 12th edition.
  • CrypTool-Online (link to the CrypTools page)
    CrypTool-Online is the online version of the CrypTool e-learning program. With the also free download or offline version of CrypTool, longer texts can be edited and more powerful analyzes can be carried out.
  • Schülerkrypto by CRYPTOOL (Link to the web page)
    The idea of ​​the student crypto is to bring the exciting knowledge of secret messages closer to students in a simple way. You should learn how important cryptography is in everyday life nowadays and that it is not about magic, but an application of mathematics. Many students very often ask themselves in math class why this is needed. The student crypto gives an answer to this at least in some of these cases. Bringing mathematics and secrets together creates the exciting science of encryption, known as cryptology. The lecturer of the CrypTool-Schülerkrypto, Prof. Wacker, is head of the department of applied information security at the University of Kassel and represents the field of IT security in research and teaching. He is also the technical director of the open source e-learning software CrypTool 2. Therefore, all examples and demos in the context of this event are carried out on the basis of CrypTool. Since CrypTool is freely available to everyone (open source), the knowledge you have learned can be used and expanded at any time at home on your own computer.
    Student and teacher material can be downloaded from the Schülerkrypto download page. The lectures will also be published there as a video link.
  • Crypto 1.5
    Krypto is an encryption program that realizes simple symmetrical encryptions, such as those used e.g. B. in Thuringia in the computer science curriculum. There are the matrix encryption, different variants of the monoalphabetic substitution as well as the polyalphabetic substitution, also called Vigenere encryption.
    Demos, with which the individual methods - especially Vigenere encryption - are demonstrated, are used for illustration purposes.
  • Experience IT - Encryption unit
    Modules for symmetrical and asymmetrical encryption for secondary level I and further for secondary level II.
  • Cryptographic Key Exchange (Youtube Playlist for Diffie-Hellmann)
    Computerphile's YouTube channel
  • (1) Elliptic Curves Youtube Video (English)
    Computerphile's YouTube channel
    Just what are elliptic curves and why use a graph shape in cryptography? Dr Mike Pound explains.
  • (2) The Dual Elliptic Curve Deterministic Random Bit Generator (Youtube Video - English)
    Computerphile's YouTube channel
    The back door that may not a back door ... The suspicion about Dual_EC_DRBG - The Dual Elliptic Curve Deterministic Random Bit Generator - with Dr Mike Pound.