给VFP程序加“活锁”

To Lock the VFP Program

受加密技术在VFP数据库中的应用一文启发,笔者构造加、解密函数对操作员口令字段内容进行加密,同时结合系统年份,加入时间掣,使开发的VFP软件只有在授权期限内拥有合法口令的操作员才能进入系统内部。

Use the methods of VFP.the author construct the locked function and unlocked function, to lock the password of operator, by the way, combined the year of system, add the timevariation.so that the operator can use the software which was designed from VFP only within the authority password and time.