一篇09年很不错的关于密码学的论文，是从IEEE上下载的，内容很权威-A very good 2009 paper on cryptography and is downloaded from the IEEE, the content is authoritative

Richard Spillman著，第一部分介绍了密码学的经典问题，第二部分介绍了现代密码学，包括流加密法，块加密法和公共密钥加密法，第三部分介绍了密码学的未来，并对量子加密法进行了简单介绍 -Richard Spillman zhao, the first part introduces the classic question of cryptography, the second part presents a modern cryptography, including flow e