Beyond DES: Data compression and the MPJ encryption algorithm

Many encryption algorithms have come and gone as cryptography, cryptanalysis, and technology have progressed. Today's communication and computer technologies need cryptography to truly secure data in many applications. The demands on the cryptography needed for some commercial applications will exceed the security offered by the National Bureau of Standards Data Encryption Standard (DES) in the near future due to advances in technology, advances in cryptanalysis, and the increasing rewards for breaking such a heavily used algorithm. To meet part of this need, a new block encryption algorithm is proposed. A Pascal program to implement this algorithm is given.

One way to further increase security of encrypted data, as well as to achieve storage and/or transmission economy, is by redundancy reduction prior to encryption. A linguistic approach to redundancy reduction, together with an example computer program to implement it, is given for this purpose.