Here you will find a summary of the most important features of the current release version of CrypTool 1. This does not include features which are additionally implemented in the successor versions CrypTool 2 and JCrypTool.
CrypTool 1 (CT1) is a freeware program which enables you to apply and analyze cryptographic mechanisms. It has the typical look-and-feel of a modern Windows application. CrypTool contains exhaustive online help, which can be understood without extensive knowledge of cryptography. CrypTool is available in English, German, Polish, Spanish, and Serbian. CrypTool includes every state-of-the-art cryptographic function and allows you to learn about and use cryptography within the same environment.
The algorithms available include both classic and modern cryptosystems:
- classic methods: the Caesar cipher, the ADFGVX cipher, the double-column transposition (permutation), the Enigma encryption algorithm, etc.
- modern methods: the RSA and AES algorithms, hybrid encryption, algorithms based on lattice reduction and elliptic curves, etc.