Extensible Firmware Interface (EFI) is the firmware technology proposed to replace BIOS. It can overcome the disadvantages of BIOS and provide more powerful functions and better interactions than BIOS. The execution of EFI is independent from the traditional operating system and it can control hardware of the system directly, which is the security threat to the system. The EFI security mechanism based on on-chip system was proposed to solve this problem. The security mechanism was designed based on the hardware resources on chips to provide security protection to EFI firmware. The analysis of the experimental results showed that the EFI security mechanism based on on-chip system could provide well protection to the EFI firmware.
In this paper, the basic Winnow algorithm, the balanced Winnow algorithm, and the improved Winnow algorithm with feedback learning function were implemented and applied in the domain of large-scale spam filtering. Comparison experiments were conducted on two datasets of SEWM2007 and SEWM2008 respectively. Experiment results show that the basic Winnow algorithm and its improved algorithms are more accurate and efficient than Logistic regression algorithm while classifying.
当今社会的信息安全问题日益突出,在保障信息安全的体系中,密码学居于核心地位。随着研究的深入,椭圆曲线密码、AES、量子密码将是未来的发展方向。对于我国,为了保障信息安全,必须在具有自主知识产权的操作系统、高强度的保密算法、新一代防火墙和防病毒软件的研究方面取得突破。
With the development of the short message services,the characteristics and contents of the spam short Message are also changing constantly,the main problems that exist in the traditional short message filtering systems are that the characteristics and contents fail to be updated in time,which reduced the filter capability.This paper mainly utilized Na ve Bays advantage of rapid statistics classification and Support Vector Machine(SVM)incremental training characteristic in Spam Short Message filtering,and provided feedbacks to the online filtering sub-system in time in order to enhance the system-s self-adaptability.The experimental results show that this new method effectively deals with the above problems in the traditional spam short Message filtering systems.
The network is a course whose fulfillment is very strong with information safety,developments a laboratory for satisfying safe profession in information teaching request is one of the key to trains safe talented person in qualified information.This text according to the concrete circumstance of the high school,proceeded the study to the problem of the safe teaching in developments information in high school laboratory,put forward the safe teaching in information laboratory developments project of an in keeping with high school,that project to safe teaching in information in high school laboratory of developments have bigger consult value.
