本课程是密码学与计算机安全学科的硕士生专业基础课，主要介绍现代密码学的核心内容和基本结果，其中包括Shannon理论、分组密码和AES、Hash函数、RSA密码与整数分解、基于离散对数问题的公钥密码、签名方案等，同时穿插介绍国内外相关研究的最新进展情况。要求学生深入理解和掌握对称/非对称密码算法以及数字签名方案的设计原理与典型结构、基本分析方法与主要结果、现有密码的安全性和局限性等内容。通过本课程的学习，要求能够正确认识和熟练掌握现代密码的原理和主要结论，为进一步从事理论和应用研究与开发奠定坚实的专业基础。

This course is the basic course for master students of cryptography and computer security. It mainly introduces the core content and basic research conclusions of modern cryptography. It includes Shannon Theory, block cipher, AES Hash function, RSA public-key cryptography, integer factoring, discrete logarithm cryptography, discrete logarithm digital signature, etc. The course also introduces the latest domestic and abroad progress of related researches. The requirement for student is to grasp the design principle and typical structure of symmetric /asymmetric encryption algorithm and digital signature scheme, learn the basic analytical methods and key conclusions, and understand the limit of security in existing cryptography. After this course, students should know correctly about the theory and key conclusion of modern cryptography, and will achieve the solid professional foundation for further theoretic research and practical implementations.