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感兴趣的小伙伴，下面一起跟随编程之家 52php.cn的小编两巴掌来看看吧！ 可以查看：
代码如下:
OPEN SYMMETRIC KEY 命令关于 对称密钥加密使用证书解密
CREATE MASTER KEY ENCRYPTION BY PASSWORD = 'password'
go
CREATE CERTIFICATE CertTest
with SUBJECT = 'Test Certificate'
GO
--创建非对称密钥
CREATE ASYMMETRIC KEY TestAsymmetric
WITH ALGORITHM = RSA_2048
ENCRYPTION BY PASSWORD = 'password1' ;
GO
ALTER ASYMMETRIC KEY TestAsymmetric WITH PRIVATE KEY (DECRYPTION BY PASSWORD = 'password1')
--DROP ASYMMETRIC KEY TestAsymmetric
--创建对称密钥
CREATE SYMMETRIC KEY TestSymmetric
WITH ALGORITHM = AES_256
ENCRYPTION BY PASSWORD = 'password' ;
GO
OPEN SYMMETRIC KEY TestSymmetric
DECRYPTION BY PASSWORD = 'password' ;
go
SELECT
ENCRYPTBYASYMKEY(ASYMKEY_ID ('TestAsymmetric'),name),CAST(deCRYPTBYASYMKEY (ASYMKEY_ID( 'TestAsymmetric'),ENCRYPTBYASYMKEY (ASYMKEY_ID( 'TestAsymmetric'),name ) )
as nvarchar(200 )),ENCRYPTBYCERT ( Cert_ID('CertTest' ),CAST(deCRYPTBYCERT (Cert_ID ('CertTest'),ENCRYPTBYCERT (Cert_ID( 'CertTest'),name ))
as nvarchar (200)),EncryptByKey ( KEY_GUID('TestSymmetric' ),CAST(decryptByKey (EncryptByKey (KEY_GUID ('TestSymmetric'),name))
as nvarchar (200))
FROM sys .objects
（编辑：李大同）
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