sqlserver对数据进行加密、解密

• ​​– 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;