Biblio

ZUC stream cipher is the first stream cipher developed independently by Chinese cryptologists as an international standard. The fast implementation of encryption algorithm is an important issue in cryptography application. At present, the research on ZUC stream cipher is mainly based on hardware implementation, and there are many efficient hardware implementations of ZUC stream cipher, but there are few efficient software implementations at present. This paper presents an efficient software design and implementation of ZUC stream cipher. Firstly, we propose the delayed modular, sliding window, and S-box optimizations to reduce the computational cost without modifying the calculation result of ZUC stream cipher. Secondly, single instruction multiple data instructions, reducing the times of memory access, loop unrolling optimization and other code optimization methods can improve the speed of encryption and decryption. Finally, we design and implementation a genetic algorithm to find the optimal sequence of optimizations in compiler. Experiments show that compared with the implementation of ZUC stream cipher given in the official document, these methods can give 102% performance improvement.

The process used to build an autonomous smart home system using Cyber-Physical Systems (CPS) principles has received much attention by researchers and developers. However, there are many challenges during the design and implementation of such a system, such as Portability, Timing, Prediction, and Integrity. This paper presents a novel modeling methodology for a smart home system in the scope of CyberPhysical interface that attempts to overcome these issues. We discuss a high-level design approach that simulates the first three levels of a 5C architecture in CPS layers in a smart home environment. A detailed description of the model design, architecture, and a software implementation via NetLogo simulation have been presented in this paper.

The number of resource-limited wireless devices utilized in many areas of Internet of Things is growing rapidly; there is a concern about privacy and security. Various lightweight block ciphers are proposed; this work presents a modified lightweight block cipher algorithm. A Linear Feedback Shift Register is used to replace the key generation function in the XTEA1 Algorithm. Using the same evaluation conditions, we analyzed the software implementation of the modified XTEA using FELICS (Fair Evaluation of Lightweight Cryptographic Systems) a benchmarking framework which calculates RAM footprint, ROM occupation and execution time on three largely used embedded devices: 8-bit AVR microcontroller, 16-bit MSP microcontroller and 32-bit ARM microcontroller. Implementation results show that it provides less software requirements compared to original XTEA. We enhanced the security level and the software performance.

In this paper we analyse possibilities of application of post-quantum code based signature schemes for message authentication purposes. An error-correcting code based digital signature algorithm is presented. There also shown results of computer simulation for this algorithm in case of Reed-Solomon codes and the estimated efficiency of its software implementation. We consider perspectives of error-correcting codes for message authentication and outline further research directions.