将加密列复制到另一个数据库SQL Server 2012

时间:2017-08-05 08:27:17

标签: sql-server tsql encryption sql-server-2012

我创建了一个数据库,它有一个带加密列的表。

如果您将加密信息插入此列,则可以非常轻松地对其进行解密。但是,如果您使用相同的密钥和证书在另一个数据库中创建完全相同的表,那么当您插入数据时会出现问题。

更新1:

有一个DB_TEST数据库,其中包含TNT表,其中有两列,其中一列是加密的。如果从此列中提取多个值,则可以解码它们并获得所需的结果。

但是如果使用相同的加密密钥创建完全相同的表,使用相同的证书,但在另一个数据库中,那么当您从第一个数据库插入值时,它也无法在NULL输出中解密。

更新2:

我追求的目标,我需要在一个表中对列进行编码,然后使用 Ctrl + C 将编码值复制到另一个数据库中的另一个表中,将这些值插入到INSERT VALUES命令,并解码它们。

如果我对问题的理解不正确,请告诉我如何在T-SQL框架内以另一种方式解决它。

--First DB, work properly:
use db_test;

--drop table db_test.dbo.tnt
create table db_test.dbo.tnt
(
    id bigint not null
)


insert into db_test.dbo.tnt
values (8001111111), (8003333333), (8002222222)


CREATE MASTER KEY ENCRYPTION BY   
PASSWORD = 'Bazalt92!'; 


create certificate xxx
    with subject = 'xxx'


create symmetric key xxx
    with algorithm = aes_256
    encryption by certificate xxx


alter table tnt
    add id_encrypted varbinary(128)
go


open symmetric key xxx
    decryption by certificate xxx


UPDATE tnt
SET id_encrypted = EncryptByKey(Key_GUID('xxx'), convert(varbinary, id))
GO  

id          id_encrypted
8001111111  0x0046DEDF99E34448ABE06B52739EECFE01000000ED3EF450F91A9B71F9E9363B1EFB7DC9E17933BA9B321762664926BCA4E0C821EFC24E528DAB051FFBF1AA5F4C6AE8D9
8003333333  0x0046DEDF99E34448ABE06B52739EECFE0100000041BD3CDA540CC85ACF81D16D2807486FA3B97534620C5B9B0800D5A764E39AABDFE567143B48431EB375871261282365
8002222222  0x0046DEDF99E34448ABE06B52739EECFE01000000653FAA82454CDA429108F45F10A86A72D5D52F7BC10A5AA6DB8AE74B39BF5280AC2883C937A0D9AD33E701748D19D524
--------------------------------------------------
insert into tnt(id, id_encrypted)
values 
 (8001111111, 0x0046DEDF99E34448ABE06B52739EECFE01000000FED846877DA0183619888D1C2C57B07EB4AA013A8B1D8A992B7D71610BA43834F2FBE5E2243B7B7DE0C60ED49FFF6A85)
,(8003333333, 0x0046DEDF99E34448ABE06B52739EECFE01000000C60266AED3C3D25D882282B9121719A7D8AFAF51D5D03719F6146609BF915D4FBE8E38202EF68689E5C98C8C76BCA6BC)
,(8002222222, 0x0046DEDF99E34448ABE06B52739EECFE01000000D0F0C432E0998487AF358CEC405651C0DE7BCE31AB2E746EC52BA5E2D560FF5BE1CA088D88E74D7DB9D355A85CAD8954)
--------------------------------------------------
select * from tnt
--------------------------------------------------
select id, convert(bigint, decryptbykey(id_encrypted))
from tnt

之后我尝试做同样的事情,但是在另一个DB中:

--CODE FOR SECOND DB
use TMP_BASE;
--drop table dbo.tnt
create table dbo.tnt
(
    id bigint not null
)

--------------------------------------------------
CREATE MASTER KEY ENCRYPTION BY   
PASSWORD = 'Bazalt92!'; 
--------------------------------------------------
create certificate xxx
    with subject = 'xxx'
--------------------------------------------------
create symmetric key xxx
    with algorithm = aes_256
    encryption by certificate xxx
--------------------------------------------------
alter table tnt
    add id_encrypted varbinary(128)
go
--------------------------------------------------
open symmetric key xxx
    decryption by certificate xxx
--------------------------------------------------
insert into tnt(id, id_encrypted)
values 
 (8001111111, 0x0046DEDF99E34448ABE06B52739EECFE01000000FED846877DA0183619888D1C2C57B07EB4AA013A8B1D8A992B7D71610BA43834F2FBE5E2243B7B7DE0C60ED49FFF6A85)
,(8003333333, 0x0046DEDF99E34448ABE06B52739EECFE01000000C60266AED3C3D25D882282B9121719A7D8AFAF51D5D03719F6146609BF915D4FBE8E38202EF68689E5C98C8C76BCA6BC)
,(8002222222, 0x0046DEDF99E34448ABE06B52739EECFE01000000D0F0C432E0998487AF358CEC405651C0DE7BCE31AB2E746EC52BA5E2D560FF5BE1CA088D88E74D7DB9D355A85CAD8954)
--------------------------------------------------
select * from tnt
--------------------------------------------------
/*RETURN NULLS*/
select id, convert(bigint, decryptbykey(id_encrypted))
from tnt

1 个答案:

答案 0 :(得分:1)

少数事情:

您可以添加KEY_SOURCEIDENTITY_VALUE

CREATE MASTER KEY ENCRYPTION BY   
PASSWORD = 'Bazalt92!'; 

CREATE CERTIFICATE xxx
    WITH SUBJECT = 'xxx';

CREATE SYMMETRIC KEY xxx
WITH ALGORITHM = aes_256,
KEY_SOURCE = 'My key generation bits. This is a shared secret!',  
IDENTITY_VALUE = 'Key Identity generation bits. Also a shared secret'
ENCRYPTION BY CERTIFICATE xxx;