MVC的练习之旅，将要进入另一个阶段了，将增加会员功能。在进入之前，一些准备工作需要做的。一步一个脚印吧。设计会员功能，其中密码字段，Insus.NET想对它进行加密。就因这个加密，还得花上一些时间来整理。
Insus.NET参考MSDN网站，列出数据库加密解密例子(以下是在SQL Server 2012进行)：
--创建数据库主密钥 CREATE MASTER KEY ENCRYPTION BY PASSWORD =‘Pass#Tutorial#word‘ GO
--创建证书 CREATE CERTIFICATE PasswordCert with SUBJECT = ‘Member Password Certificate‘ GO
--创建非对称密钥
CREATE ASYMMETRIC KEY PasswordAsymmetric
WITH ALGORITHM = RSA_2048 --{ RSA_512 | RSA_1024 | RSA_2048 }
ENCRYPTION BY PASSWORD = ‘Pass#Tutorial#word‘;
GO
--创建对称密钥
CREATE SYMMETRIC KEY PasswordSymmetric
WITH ALGORITHM = AES_256 --{ AES_128 | AES_192 | AES_256 | TRIPLE_DES_3KEY }
ENCRYPTION BY PASSWORD = ‘Pass#Tutorial#word‘;
GO
--由证书加密对称密钥
CREATE SYMMETRIC KEY SymmetricByCert
WITH ALGORITHM = AES_256
ENCRYPTION BY CERTIFICATE PasswordCert;
GO
--由对称密钥加密对称密钥
OPEN SYMMETRIC KEY PasswordSymmetric
DECRYPTION BY PASSWORD=‘Pass#Tutorial#word‘
CREATE SYMMETRIC KEY SymmetricBySy
WITH ALGORITHM = AES_256
ENCRYPTION BY SYMMETRIC KEY PasswordSymmetric;
GO
--由非对称密钥加密对称密钥
CREATE SYMMETRIC KEY SymmetricByAsy
WITH ALGORITHM = AES_256
ENCRYPTION BY ASYMMETRIC KEY PasswordAsymmetric;
GO
创建之后，会要相应的数据库之下，显示如下：
原文：http://www.cnblogs.com/lschenblog/p/3896305.html