商品化软件的一种串联加密对策

Series Encipher Strategy of Merchandised Softwave

针对商品化加密问题 ,本文首先讨论了几种典型的传统加密方法原理 ,针对其存在的加密解密速度慢 ,单一方法加密强度不高等缺点 ,给出了一种对整个应用程序及对重要的 .DBF文件两个层次上加密的方法 ,并给出了一种易实现难破解的密钥实现方法。本文给出的串联加密对策 ,具有加密方法简单可靠、加密强度高、加密解密速度快、加密成本低等特点 ,经实际使用 ,该加密方法效果良好。

As to the problem of merchandise software secret, the principle of seve-ral typical ways of traditional secret is discuss ed at the beginning of this paper, regarding the disadvantages of the low speed and week intensity of secret and decipher and so on. The paper then offers a m ethod for the two levels of the whole applied program and important .DBF files. What′s more, another method of secret is also given, which is easy to realize a nd difficult to decipher. The series secret possesses the c haracteristics of a simple and reliable secret with strong intensity and high sp eed of encipher and decipher which proves to be effective in practical applicati ons.