SYMMETRICAL ENCRYPTION METHOD

摘要

A method for encrypting and decrypting data is disclosed. Unlike any previous methods, the present invention performs efficient, scalable and flexible encryption by using full advantages of the way the data to encrypt is structured. The method is based on the well-known confusion-diffusion paradigm. The confusion is performed using random invertible or reversible s-boxes while the diffusion is achieved at the bit level between neighbouring s-boxes . Correctly structuring the data in a topological space allows for optimal diffusion to occur. The method is naturally adapted to be implemented in hardware with great efficiency. Its scalable nature allows for variable block sizes, which either in hardware and software allows for greater performances. The method is based on a two-dimensional lattice and is characterized by its high degree of parallelism.