2019-2020-1 semester 20,192,419 "Introduction to cyberspace professional security" twelfth week study summary (reading experience)

   Through the study of "cyberspace security Introduction", I history of the development from concept through tenth chapter of cryptography and application of cryptography and learned. I have a preliminary understanding of cryptography. This chapter also describes the basic principles and several commonly used cryptographic algorithm cryptographic algorithms, through this part of the study of knowledge, I further learning techniques of cryptography. This chapter focuses on the most commonly used applications of cryptography, including PKI system, VPN technology and PMI technology, to explain in detail their knowledge of the principles, architecture and key technologies, so that my basic grasp of these three widely used encryption products. In short, through knowledge and learning cryptographic algorithms and cryptographic applications, I can better understand the content learned in previous chapters, and linked to the password problem encountered in daily life, and on the back to learn the practical aspects of safety skills have help. Learn the basics of cryptography and cryptographic schemes, the proper use of the password, set the security password and personal information security is essential to protect the security of enterprise information.