Production And Safety Of Code Sequences Based On Chaotic And Quantum Properties Of MBE-SSP Control

The safety of secret key immediately guarantees the safety of cryptosystem, traditional key distribution protocol will inevitably encounter the problem of Catch22, however,QKD(quantum key distribution) protocol, guaranteed by Heisenberg’s uncertainty principle and quantum no-cloning theorem,enjoys absolute safety.on the premise of strictly safe control code, MBE-SSP QKD protocol is not only safe but also boosts high transmission efficiency. On the aspect of how to increase the safety of control code sequence, this paper has been done the following work:(1) Analyzing the two main problems existing in the safety of MBE-SSP control code sequence:One is the irreconcilable contradiction between safe key’s length and its safety factor. The other problem is the single generation type of control code sequence, when repeatedly used, it will lead to more information leakage.(2) Putting forward a generation type of MBE-SSP control code sequence, based on chaos and quantum property. Such a generation type works towards a preliminary key sequence under the chaos system, then acquires the ultimate control code sequence after experiencing three steps of grouping, XOR and extraction. when repeatedly using control code sequence, this paper proposes a method of discard algorithm shift cycle. This method can change the status of control code sequence in its every circulation, it also can control different measuring basis, strengthening the safety of control code sequence when it is repeatedly used, besides, it enables control code to transmit a longer key sequence in a shorter time.(3) Comprehensively analyzing the safety of the improved project, in terms of control code in Shift cycle to abandon,this paper succeeds in designing the longest calculation formula when the possible transmitted key sequence achieves the optimal safety, such a formula serves as a theoretical foundation for the concrete application of the project. The improved project this paper offers perfectly solves the two problems existing in the safety of MBE-SSP control code sequence. The whole project is equipped with good dynamism,feasibility and safety.