基于MIDAS的多层分布式应用系统中，对敏感数据进行加密后交由网络传输，在客户端再用相应的算法解密，以解决传输过程中的安全隐患。-MIDAS-based multi-tier distributed application system, the sensitive data encrypted by the network transmission, the client re-use the corresponding decryption algorithm to solve the tr