軟件加密功能描述部分，可以進行軟件加密 delphi源估碼-Descr iption of some of the software encryption, encryption software can estimate the source code delphi

古典密码，通过概率统计判断加密算法是单表替代或是多表替代并初步估计是由几重替代-Classical cryptography, encryption algorithms via probabilistic judgment is replaced or a single table and multi-table alternative initial estimate is replaced by a few heavy

客户端之间发送PING报文，客户端接受其他客户端的PING报文，回复信息。 个人想法：通过UDP连接，客户端与服务器建立连接，登录只要用户名（不能重复），能从服务器查询在线用户。-There are four main components to phase 2: 1) Add functionality to send “ping” messages over UDP and listen for echo responses, in order to