Small cipher engine for generating random numeral and steam ciphers

Abstract

A compact dual function Random Number Generator and Stream Cipher Generator includes a Crypto-engine has a controller for controlling the engine to operate in one or other of its functions. The Crypto-engine incorporates a plurality of clipped Hopfield Neural Network pairs.

Description

technical field [0001] The invention relates to a cryptographic engine for authentication and information data scrambling. Background technique [0002] The security of many cryptosystems depends on the generation of unpredictable values ​​that must be of sufficient size and random. Linear Feedback Shift Registers (LFSRs) are the basic building blocks in the most commonly used stream cipher generators because of their simplicity and efficiency in implementation. However, along with certain attractive properties of LFSRs arises the problem that many of these constructions cannot satisfy good cryptographic strength. In particular, the inherent linear and algebraic structures of LFSRs are often the basis for deciphering these cryptosystems. Generating polynomials are readily available, and generating an initial state for a specific sequence will produce many predictable sequences. [0003] To avoid this linearity problem, a non-linear filter function whose input is taken fro...

AI Technical Summary

Problems solved by technology

[0005] One solution to the above problem would be to use Data Encryption Standard (DES) to randomize the output, however, this solution is very uneconomical due to the large amount of hardware required

In summary, the problem arises because LFSR-based stream ciphers or random number generators are encrypted insecurely, and to make them secure has to use a lot of hardware

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