DES数据加密算法。工程文件，已经建立好了，vc6直跑。

数据加密算法（Data Encryption Algorithm，DEA）是一种对称加密算法，很可能是使用最广泛的密钥系统，特别是在保护金融数据的安全中，最初开发的DEA是嵌入硬件中的。-DES data encryption algorithm. Engineering documents, has been created, vc6 straight run.

Data Encryption Algorithm (Data Encryption Algorithm, DEA) is a symmetric encryption algorithm, is probably the most widely used key system, especially in the security of financial data, originally developed DEA is embedded in the hardware.