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Controllable method for generating chaos cipher sequence of natural number, and core of digit chip

A technology of natural number sequences and chaotic ciphers, which is applied in digital transmission systems, secure communication devices, electrical components, etc., can solve the problems of losing chaotic pseudo-random characteristics and short chaotic sequence periods, and achieves overcoming the phenomenon of iteration termination, fewer parameters, and safety sex high effect

Inactive Publication Date: 2010-04-28
CHONGQING UNIV
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Problems solved by technology

The use of finite precision chaotic iteration makes the chaotic sequence cycle short and loses the pseudo-random characteristics of chaos

Method used

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  • Controllable method for generating chaos cipher sequence of natural number, and core of digit chip
  • Controllable method for generating chaos cipher sequence of natural number, and core of digit chip
  • Controllable method for generating chaos cipher sequence of natural number, and core of digit chip

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Embodiment Construction

[0025] see figure 1 , the method of the present invention can be embodied in this figure: the method is by presetting the initial natural number parameter, namely figure 1 The initial natural number 1, the initial natural number 2, and the initial natural number 3 are repeated under the action of the synchronous clock signal 6 to generate a chaotic sequence 11 of natural numbers. When the preset signal 4 is enabled, the initial natural parameter 1, 2 or 3 can be changed, and then the next clock after the preset signal 4 is removed starts to perform iterative operations according to the new initial value 1, 2, 3 to generate a new The Chaos Sequence11. When the clear signal 5 is enabled, the output 11 of the natural number chaotic sequence algorithm becomes zero. Due to the periodic continuation, the natural number chaos generators 7, 8, and 9 will not have zero value. Through the combination of different initial natural parameters 1, 2, 3, different natural number chaotic ci...

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Abstract

A controllable method for generating chaos cipher sequence of natural number, and core of digit chip at first generates controllable sequence of natural number by a natural number iterative calculation method, and generates controllable chaos sequence of natural number by period continuation extending arithmetic, and based on above, further generates chaos long sequence of natural number adoptingmore than three chaos sequence of natural number to operate binary system multiplication (XOR) scrambling calculation, and achieves chaos sequence of natural number generator core of digit chip by adopting hardware language. The method of the invention has sensitivity to initial value, and integrates advantage of simple chaos technology code arithmetic and natural number calculation, which can bewidely used for information security such as spectrum spread and data encoding, security communication etc.

Description

Technical field: [0001] The invention belongs to an encryption sequence generation method and a digital chip core technology for information security in the information field, and in particular relates to a controllable natural number chaotic code sequence generation method and a digital chip core. Background technique: [0002] With the development of mobile communication and wireless communication, embedded systems and digital chip products are more and more widely used, and corresponding information security is getting more and more attention. Shannon proved that only one key at a time is completely safe, that is, the encryption key can be changed at any time during the encryption process instead of a fixed key, and the random sequence sequence cipher can just realize this encryption method. The key to adopting sequence ciphers is the generation and transmission of sequences. If the research uses a small number of parameters to represent the sequence, the transmission of...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/00
Inventor 钟先信陈帅石军锋
Owner CHONGQING UNIV
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