我有一个我想用条件改变的View。但我想在视图中使用对称密钥。以下是我的代码:
create view dbo.[Test_view]
select
t.med_id,
t.medicine_name,
case when
t.taxo_id like '%include%' then '1'
else '0' end as 'Taxo_number' ----The taxo_id is encrypted column
from dbo.Meds t
我想在视图'Taxo_number'中再添加一列,该列基于使用对称密钥加密的taxo_id列。
My key is: OPEN SYMMETRIC KEY [Test_Key] DECRYPTION BY CERTIFICATE [Test_Cert]
有没有办法在“查看”脚本中包含此键?请帮忙!
你确定可以。这是一个POC:
use tempdb;
go
create symmetric key [mykey]
WITH ALGORITHM = AES_256
ENCRYPTION BY PASSWORD = 'SouperSecretz>789'
go
create table dbo.Secrets (
Secret varbinary(400)
)
go
create view dbo.openSecrets
as
select cast(decryptbykey(Secret) as varchar(200)) as OpenSecret
from dbo.Secrets
go
open symmetric key [mykey]
DECRYPTION BY PASSWORD = 'SouperSecretz>789'
go
insert into dbo.Secrets (Secret)
values (ENCRYPTBYKEY(KEY_GUID('myKey'), 'asdfasdf'));
select *
from dbo.openSecrets;
close symmetric key [mykey];
select *
from dbo.openSecrets;
在这个演示中,我正在创建:
在我对视图做的两个选择中,其中一个选项打开了键,另一个没有。前者揭示明文,后者则返回null
。
因此,只要您在会话中打开密钥,您就应该能够看到明文数据。如果没有,你将(成功)获得该列的null
。