大数运算库miracl。有了miracl这样的函数库，你可以直接调用函数，来实现你要的公钥密码学的某个功能。...

古典加密算法,非常实用，有需要的可以下载，不需权限-this code is very good

打包文件，VB源码，还好，值得学习和使用.-Packing paper, VB source, Fortunately, it is worth learning and use.

Lock Manage 是一个功能比较全面的加密软件。 它具有多种加密方案：如文件口令加密，文件反拷贝加密，软硬盘加密，安装加密，文本加密，批处理加密等等。系统是由Ｃ和汇编写成，可从外部链接于主模块。可单独编译，单独调试。可执行ＥＸＥ／ＣＯＭ程序加密模块已经过长时间的测试分析，其工作性能己十分稳定。可移植性与兼容性很好。另外，代码实现了ＣＳ，ＤＳ不换技术，使其ＳＨＥＬＬ性能难以被ＤＥＢＵＧ识别。其内部密码采用单向不可逆变换，基本实现了不可解，原因在于四个随机密钥只能用穷举法找出。这种可靠原四密钥单向加密技术渗透到了后面的几个程序中。对于反拷贝加密，采用了随机的软指纹生成技术，可生成唯一密钥母盘。硬盘反拷贝在硬盘里产生四密钥，在非母机上程序运行错误。反反汇编可将整个文件的内容加密变换。反跟踪采用了目前十余种通用的反跟踪算法。可抵抗ＤＥＢＵＧ系列软件。批处理和文本加密十分方便，但保密性不太强，只能用于一般用户。-Lock function is a more comprehensive encryption software. It has a wide variety of encryption programs : documents such as password encryption, anti-copy document encryption, hard disk encryption software, the installation of encryption, encrypted text, etc. batch encryption. C system is written and compiled, from the external links in the main module. Separately compiler, debugger alone. EXE executable/COM procedures encryption module has been tested over a long period of analysis, their performance has very stable. Good portability and compatibility. In addition, the implementatio

这是一个好用的MD5的C++类；这个类可以加在控制台 程序中也可用在MFC中， 并且提供了详细的错误处理 函数，是一个安全的类。例程是一个MD5的MFC程序， 支持字符串和文件两种输入-This is an easy to use the MD5 of the C++ category this category can be added to the console program can also be used in the MFC and to provide a detailed error handling function, is a type of security. MD5 is a routine procedure of MFC, and documentation to support two types of input string

分别使用VC和VB写的MD5加密算法-MD5 encrypting algorithm which writed in VC and VB

在Visual C++ 6.0下利用Rijndael算法进行任意文件加密，一个rijndael加密算法的使用实例，虽然图形界面做得比较粗糙，但是程序本身有很多值得参考和学习的地方- 6.0 carries on the free document encryption in Visual C using the Rijndael algorithm, a rijndael encryption algorithm use example, although the graphical interface does quite roughly, but procedure itself has the very multiple-valued reference and the study place

rsa加密算法实例-rsa encryption algorithm examples

Ｃ＋＋语言实现智能卡研发技术，实现智能卡的ＭＤ５，ＤＥＣ，ＳＨＡ，ＲＳＡ等加密技术，欢迎大家下载，交流并研究．-C++ Language development of smart card technology, smart cards MD5, DEC, SHA, RSA encryption technology, etc., all are welcome to download, share and study.

实现数据库安全编程,写了一个MD5的加密库-Database Security Programming realize, write a MD5 encryption library

对软件进行加密限制，以防止末经诃可的随意拷贝-right software encryption restrictions to prevent the end by sending copies to be arbitrary