I have the stable version (9778.2) installed on a Windows 11 Pro desktop computer (10.0.26100). I used cryptools for a few months without issues, then after the latest Windows update yesterday evening ...

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Abstract: ElGamal encryption is one of the encryption processes which employs randomization in the encryption procedure. In this paper, we applied cryptanalysis to Elgamal cryptosystem. Cryptanalysis ...

Communications by important people over the past thousands of years have been regularly encrypted, making the breaking of this encryption both an essential and also a fascinating historical field. One ...

A team of codebreakers discovered – and then cracked – more than 50 secret letters written by Mary Stuart, Queen of Scots while she was imprisoned in England by her cousin, Queen Elizabeth I. In total ...

Abstract: The study of techniques and methods to extract the text from encrypted texts is called cryptanalysis. Nowadays, the aim of ‘breaking’ cryptographic methods by analyzing them is called ...

Let’s take a look at this cryptogram, an encrypted advertisement published in the London newspaper The Times on 1 August 1873. This, and some other encrypted newspaper ads we will be referring to ...

German cipher expert Nils Kopal has produced a number of interesting crypto videos. His CrypTool 2 Youtube channel is a must-see for everybody interested in classical cryptography. Frequent readers of ...

CrypTool is the world’s leading crypto e-learning software. Currently, the 20th anniversary of this outstanding tool is celebrated in Munich. Among the guests are some renowned codebreakers. In my ...