In cryptography, MMB (Modular Multiplicationbased Block cipher) is a block cipher designed by Joan Daemen as an improved replacement for the IDEA cipher. Modular multiplication is the central element in the design. Weaknesses in the key schedule were identified by Eli Biham, and this, together with the fact that the cipher had not been designed to resist linear cryptanalysis, meant that other designs were pursued instead, such as 3Way. The German Lorenz cipher machine Cryptography or cryptology is a field of mathematics and computer science concerned with information security and related issues, particularly encryption and authentication. ...
Encryption Decryption In cryptography, a block cipher is a symmetric key cipher which operates on fixedlength groups of bits, termed blocks, with an unvarying transformation. ...
Joan Daemen (born 1965) is a Belgian cryptographer and one of the designers of Rijndael, the Advanced Encryption Standard (AES), together with Vincent Rijmen. ...
In cryptography, the International Data Encryption Algorithm (IDEA) is a block cipher designed by Xuejia Lai and James L. Massey of ETHZürich and was first described in 1991. ...
Modular arithmetic is a system of arithmetic for integers, where numbers wrap around after they reach a certain value â€” the modulus. ...
In mathematics, multiplication is an arithmetic operation which is the inverse of division, and in elementary arithmetic, can be interpreted as repeated addition. ...
The keyschedule of DES In cryptography, the algorithm for computing the subkeys for each round in a product cipher from the encryption (or decryption) key is called the key schedule. ...
Eli Biham is an Israeli cryptographer and cryptanalyst, currently a professor at the Technion Israeli Institute of Technology Computer Science department. ...
In cryptography, linear cryptanalysis is a general form of cryptanalysis based on finding affine approximations to the action of a cipher. ...
In cryptography, 3Way is a block cipher designed in 1994 by Joan Daemen, who also (with Vincent Rijmen) designed Rijndael, the winner of NISTs Advanced Encryption Standard (AES) contest. ...
MMB has a key and block size of 128 bits. In cryptography, the key size (alternatively key length) is a measure of the number of possible keys which can be used in a cipher. ...
In modern cryptography, symmetric key ciphers are generally divided into stream ciphers and block ciphers. ...
References
 J. Daemen, R. Govaerts, and J. Vandewalle, "Block Ciphers Based on Modular Arithmetic, " Proceedings of the 3rd Symposium on: State and Progress of Research in Cryptography, Fondazione Ugo Bordoni, 1993, pp. 80–89.
External links  Paulo Barreto's comments on MMB
 Chapter of Daemen's PhD thesis dealing with MMB (Postscript format)
