一个可直接使用的DES加密算法，不需要修改代码。-a direct access to the DES encryption algorithm and do not need to amend the code.

自编写的加密/解密算法,开发环境c语言!-since the preparation of the encryption / decryption algorithm development environment c language!

经典的置换加密算法，写的很详细，注释的也很不错，对你很有帮助-Classic permutation encryption algorithm, written in a very detailed annotation is also very good, very helpful for you

检测当前的网络环境中是否有恶意程序的注入，若有恶意程序注入，则利用反注入技术来delete这些恶意程序，最后使用IDEA加密算法对输入的信息进行加密处理，防止之后的传输过程中被截取到有效信息。-Detect the current network environment, whether there is injected malicious programs, if the injection of malicious programs, the use of anti-injection t