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The development of CrypTool started in 1998. Originally developed by German companies and universities, it is an open-source project since 2001. [2]Currently 4 versions of CrypTool are maintained and developed: The CrypTool 1 (CT1) software is available in 6 languages (English, German, Polish, Spanish, Serbian, and French).
A number of modes of operation have been designed to combine secrecy and authentication in a single cryptographic primitive. Examples of such modes are , [12] integrity-aware cipher block chaining (IACBC) [clarification needed], integrity-aware parallelizable mode (IAPM), [13] OCB, EAX, CWC, CCM, and GCM.
xx messenger uses cMix - a network of decentralized servers called xx network that are run by independent operators in approximately 80 countries - for data transmission. [8] cMix attempts to address traditional latency and scalability limitations of mix networks by performing computationally expensive public-key operations between mix nodes prior to any client data being transmitted over the ...
In cryptography, a Feistel cipher (also known as Luby–Rackoff block cipher) is a symmetric structure used in the construction of block ciphers, named after the German-born physicist and cryptographer Horst Feistel, who did pioneering research while working for IBM; it is also commonly known as a Feistel network.
List of Enigma machine simulators lists software implementations of the Enigma machine, a rotor cypher device that was invented by German engineer Arthur Scherbius at the end of World War I.
Elliptic-curve cryptography (ECC) is an approach to public-key cryptography based on the algebraic structure of elliptic curves over finite fields.ECC allows smaller keys to provide equivalent security, compared to cryptosystems based on modular exponentiation in Galois fields, such as the RSA cryptosystem and ElGamal cryptosystem.
Off-the-record Messaging (OTR) is a cryptographic protocol that provides encryption for instant messaging conversations. OTR uses a combination of AES symmetric-key algorithm with 128 bits key length, the Diffie–Hellman key exchange with 1536 bits group size, and the SHA-1 hash function.
Four practical examples of kleptographic attacks (including a simplified SETUP attack against RSA) can be found in JCrypTool 1.0, [11] the platform-independent version of the open-source CrypTool project. [12] A demonstration of the prevention of kleptographic attacks by means of the KEGVER method is also implemented in JCrypTool.