Design of One Stream Cipher Algorithm Based on a Time-Varying Generalized Symbolic Chaotic System

2018 ◽  
Vol 08 (10) ◽  
pp. 1582-1588
Author(s):  
传俊 田
Keyword(s):  
Chaotic System ◽  
Stream Cipher ◽  
Time Varying

scholarly journals A novel chaotic system based on coupled map lattice and its application in HEVC encryption

2021 ◽  
Vol 18 (6) ◽  
pp. 9410-9429
Author(s):  
Qing Ye ◽  
◽  
Qiaojia Zhang ◽  
Sijie Liu ◽  
Kaiqiang Chen ◽  
...  
Keyword(s):  
Chaotic System ◽  
Stream Cipher ◽  
High Efficiency ◽  
Chaotic Map ◽  
Large Data ◽  
Coupled Map Lattice ◽  
Video Data ◽  
Video Encryption ◽  
High Efficiency Video Coding ◽  
Video Information

<abstract> <p>Video information is currently widely used in various fields. Compared with image and text data, video data has the characteristics of large data volume, strong data relevance, and large data redundancy, which makes traditional cryptographic systems no longer suitable for video encryption systems. The paper proposes a new chaotic system based on coupled map lattice (CML) and applies it to high efficiency video coding (HEVC) video encryption. The chaotic system logistic-iterative chaotic map with infinite collapses-coupled map lattice (L-ICMIC-CML), which is improved on the basis of the ICMIC system and combined with CML, generates stream ciphers and encrypts some syntax elements of HEVC. The experimental results show that the stream cipher generated by the L-ICMIC-CML system passes the SP800-22 Revla test and has strong randomness. Applying the stream cipher to the proposed HEVC encryption scheme, through the analysis of the encryption scheme's security, encryption time and encryption efficiency, it is better than other chaotic system encryption schemes. The video encryption system proposed in this paper is both safe and efficient.</p> </abstract>

scholarly journals An averaging model for chaotic system with periodic time-varying parameter

2010 ◽  
Vol 217 (1) ◽  
pp. 355-362 ◽  
Author(s):  
Yu Mao ◽  
Wallace K.S. Tang ◽  
Marius-F. Danca
Keyword(s):  
Chaotic System ◽  
Time Varying ◽  
Time Varying Parameter

scholarly journals A New Lightweight Stream Cipher Based on Chaos

Symmetry ◽  
2019 ◽  
Vol 11 (7) ◽  
pp. 853 ◽  
Author(s):  
Lina Ding ◽  
Chunyuan Liu ◽  
Yanpeng Zhang ◽  
Qun Ding
Keyword(s):  
Chaotic System ◽  
Field Programmable Gate Array ◽  
Stream Cipher ◽  
Statistical Test ◽  
Test Results ◽  
Resource Constrained ◽  
Field Programmable ◽  
Gate Array ◽  
Resource Constrained Devices ◽  
Constrained Devices

A chaotic system and two Nonlinear Feadback Shift Registers (NFSRs) are used to generate a new stream cipher in this paper. This design can be used for efficient encryption in resource-constrained devices or environments. The chaotic system is quantified and integrated with two NFSRs based on the technology of Field Programmable Gate Array (FPGA). Many analyses are made from the angle of entropy in order to verify the cryptographic characteristics of the stream cipher, and National Institute of Standards and Technology (NIST) statistical test is completed to analyze the cipher. The test results show that the stream cipher here has good cryptographic characteristics.

DIGITAL STREAM CIPHER BASED ON SCS-PRBG

2009 ◽  
Vol 23 (25) ◽  
pp. 5085-5092
Author(s):  
XINGYUAN WANG ◽  
WEI LIU ◽  
NINI GU ◽  
HUAGUANG ZHANG
Keyword(s):  
Parallel Computation ◽  
Chaotic System ◽  
Chaotic Systems ◽  
Stream Cipher ◽  
Theoretic Analysis ◽  
Switch Control ◽  
Random Bit Generator ◽  
And Performance ◽  
Multiple Chaotic Systems

Limitations caused by degeneration of dynamics characteristics may exist in the traditional single chaotic system. The authors propose a method i.e., switch controller chaos and pseudo random bit generator (it is called SCS-PRBG for short), which is based on multiple chaotic systems and switch control. By the theoretic analysis of random key stream and performance of SCS-PRBG, we can see that its digital stream cipher has better randomicity and security. And if using hardware parallel computation, the speed of encryption can be improved sharply. The results of the experiments also present better security of this arithmetic.

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