• – sqlserver对数据进行加密、解密
  • – 创建测试表
  • – 创建数据库主**
  • – 创建证书
  • – 创建对称**
  • – 使用对称秘钥加密数据
  • – 查看加密后的数据
  • – 解密数据

– sqlserver对数据进行加密、解密

– 创建测试表

CREATE TABLE TBLUser 
(    
    Name             nvarchar(30),     
    Password         varbinary(1000)
)

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– 创建数据库主**

CREATE master key  ENCRYPTION BY PASSWORD ='passW@ord'

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– 创建证书

CREATE CERTIFICATE TestCert with SUBJECT = 'Test Certificate'

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– 创建对称**

CREATE SYMMETRIC KEY TestSymmetric WITH ALGORITHM = AES_256 ENCRYPTION BY CERTIFICATE TestCert 

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– 使用对称秘钥加密数据

OPEN SYMMETRIC KEY TestSymmetric DECRYPTION BY CERTIFICATE TestCert;
INSERT INTO TBLUser values('张三', ENCRYPTBYKEY(Key_Guid(N'TestSymmetric'), '123456'));
CLOSE SYMMETRIC KEY TestSymmetric;

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– 查看加密后的数据

SELECT * FROM TBLUser

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– 解密数据

OPEN SYMMETRIC KEY TestSymmetric DECRYPTION BY CERTIFICATE TestCert;
SELECT Name, CAST(DecryptByKey(password) as varchar(100)) Password FROM TBLUser;
CLOSE SYMMETRIC KEY TestSymmetric;