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软件有限次加密，对软件的使用次数进行限制-finite encryption software, software usage restrictions

What Does the code DO? Sometimes we may desire to hide our file contents from others.One of the possible way is encrypting these files.Here a simple encryption technique is used(In VB - The same technique can be implemented in "c" also.) Program flow Explained * Open the File to be encrypted for Binary Access Read(Say Source File) * Open a temparory file where encrypted data is stored for Binary Access Write(Say Destination File) * Loop through the Source File Byte by Byte * For each byte read from the file, Complement the data. (Using Not operator (in C we have to use "~" operator) * Write Complemented Data to Destination File * Delete the Source File * Rename Destination file as Source File(Now Encryption is over) -What Does the code DO? Sometimes we may desire to hide our file contents from others.One of the possible way is encrypting these files.Here a simple encryption technique is used (In VB- The same technique can be implemented in

这是RC4加密算法的VB源程序，语法简单。如果您有需要，可以翻译为其他语言的版本。-This is the RC4 encryption algorithm of the VB source code, a simple grammar. If you have needs, can be translated into other languages.

Crypto api 使用实例，可以学习的例子-Crypto api to use examples, you can learn from examples

对ORCLE数据库进行保护，具有很强的功能，有加密，访问，删除，等保护功能-right ORCLE database protection, and highly functional, encryption, access, deletion, such as the protection function

sha1摘要算法 简单易懂 测试已通过 将文件进行散列加密处理-sha1 digest algorithm simple test has been passed to deal with file hash encryption

经典的文档加密技术，简单高效

Program In VB

对所需要保密的文件进行加密，代码简洁易懂。-right by the need for confidentiality of documents encrypted code easy to read.

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