了解现代密码学的基础知识，其中包括古典密码学，单向函数，伪随机序列生成器，序列密码，分组密码，公钥密码学。这是大学现代密码学的课程内容，从第一章至第九章，都较为基础。-Knowledge of modern cryptography, including classical cryptography, one-way function, pseudo random sequence generator, sequence cipher, block cipher, public key cryptography. This is the content of University modern cryptography,　the first chapter to the ninth chapter, are more basic.