对原始密码进行“凯撒”码加密。需要设定密钥。以后存密码就可以以明文的方式大胆的存放了。C# 编写 。vs2008环境下编译通过-The original password " Caesar" code encryption. Need to set the key. After the password stored in clear text can be stored for bold. C#,. vs2008 environment compile