这个是RSA密钥对生成器，使用RSA EURO

如何实现DES算法-how DES algorithm

简单的文件加密代码 一个不错的文件加密系统，对你工作的安全大大加强。-simple file encryption code a good file encryption system, you have the right security greatly enhanced.

产生共享软件加密序列号的程序- Has the shareware encryption sequence number procedure

存UTF8格式文件-deposit UTF8 format

delphi编写的加壳程序,实现对文件保护-delphi write the packers program to realize File Protection

CRC32循环冗余校验源程序！！！！ VC版本-CRC32 Cyclic Redundancy Check Source Code! ! ! ! VC version

本书真实系统地介绍了密码学及该领域全面的参考文献。 全书共分四个部分，首先定义了密码学的多个术语，介绍了密码学的发展及背景，描述了密码学从简单到复杂的各种协议，详细讨论了密码技术，并在此基础上列举了如DES、IDEA、RSA、DSA等10多个算法以及多个应用实例，并提供了算法的源代代码清单。 全书内容广博权威，具有极大的实用价值。自出版以来，得到业内专家的高度赞誉，是致力于密码学研究的专业及非专业人员一本难得的好书。-This book introduces the real system and the field of cryptography comprehensive references. Book is divided into four parts, first of all define the term more than cryptography, introduced the development of cryptography and background, describes cryptography from the simple to the complex variety of the agreement, a detailed discussion of cryptographic techniques, and on this basis cited, such as DES, IDEA, RSA, DSA algorithm, as well as more than 10 examples of multiple applications and provides the algorithm source code on behalf of the list. Broad authority of the contents of the book, has great practical value. Self-publishing has been highly praised the industry experts, is dedicated to the study of cryptography professional and non-professional a rare book.

用Caesar算法实现文本加密的程序

pki资料，是希望入门pki的人的最好的参考资料-pki data entry pki is the best reference.

程序运行时间限制的封装类-running time limits the types of Packaging