Biography
Enrollment Date: 2013
Graduation Date：2016
Degree：M.S.
Defense Date：2016.05.30
Advisors：Huajun Fang Liji Wu
Department：Institute of Microelectronics，Tsinghua University
Title of Dissertation/Thesis：Research of Security on Hardware of RC4 and Design and Implementation of Security Evaluation Platform on Side Channel Analysis of Chip
Abstract:
With the increasing development of society information, the security of crypto chip has received widespread attention and research, and side channel analysis is one of the most important research methods. While security evaluation platform on side channel analysis of chip is a crucial support for the technology of side channel analysis research and the improvement of crypto equipment security, we lack the Chinese-designed security evaluation platform of chip. Therefore, it is of significance to design a set of complete and high level Chinese-designed security evaluation platform of chip for the research of security of chip and the improvement of the security evaluation of chip of our country. RC4 is widely used in the communication protocol including WEP, for its simplicity ,ease of implementation ,speed and small memory requirements. The research of RC4 security has transformed from algorithm security in traditional research to the security of hardware implementation. So, on the basis of the our lab’s technology accumulation, we has independently designed a a set of security evaluation platform on side channel analysis of chip --- THSCAP200,which has fully independently intellectual property rights. We also research the security of RC4 hardware circuit.Firstly, on the basis of our lab’s technology accumulation, we introduce a set of security evaluation platform on side channel analysis of chip --- THSCAP200, of which the hardware is mostly designed by myself and has fully independently intellectual property rights. This platform can acquire ,process and analyze the information of the side channel analysis and fault analysis from crypto chip and equipment, which consists of four parts: power analysis platform, electromagnetism analysis platform, fault analysis platform, software platform. This platform has passed the evaluation of Commercial Cryptography Testing Center of State Cryptography Administration, and is put to used in reality, which has filled the blank of Chinese-designed security evaluation platform of chip.This platform has such features and innovation points as follow. Compared to the imported equipment of Riscure’s Inspector, it has good compatibility, and supports USB interface and GuoMi algorithm. Its toolbox have absorbed the most advanced side channel analysis technology and signal processing technology, such as using the method of homologous offset to eliminate the electromagnetic carrier; high scalability, which treats the side channel analysis method and the design of cryptographic algorithm as two independent parts, it means any specific side channel analysis method does not depend on any cryptographic algorithm, etc.Secondly, we have implemented some in-depth research of the security of RC4 hardware implementation , evaluating and improving its security in the aspects of side channel analysis. We also independently designed a complete RC4 hardware circuits and its control system, which can use software to control the encryption and decryption of the RC4 hardware circuits; set up a set of power analysis platform ;analyzed its security holes; attacked the RC4 hardware circuits using template attack, which recovered the first byte of input key of RC4 using only a single power trace ; put forward some protective measures from the analysis of template attack strategy and results. Then we put forward a masking scheme, and designed the masked RC4 hardware circuits and verify its safety.