select @maxColID = max(subobjid) FROM
sys.sysobjvalues WHERE objid = object_id(@procedure)
–select @maxColID as ‘Rows in sys.sysobjvalues’
select @procNameLength = datalength(@procedure) + 29
DECLARE @real_01 nvarchar(max)
DECLARE @fake_01 nvarchar(max)
DECLARE @fake_encrypt_01 nvarchar(max)
DECLARE @real_decrypt_01 nvarchar(max),@real_decrypt_01a nvarchar(max)
declare @objtype varchar(2),@ParentName nvarchar(max)
select @real_decrypt_01a = ”
–提取对象的类型如是存储过程还是函数，如果是触发器，还要得到其父对象的名称
select @objtype=type,@parentname=object_name(parent_object_id)
from sys.objects where [object_id]=object_id(@procedure)
— 从sys.sysobjvalues里提出加密的imageval记录
SET @real_01=(SELECT top 1 imageval FROM sys.sysobjvalues WHERE objid =
object_id(@procedure) and valclass = 1 order by subobjid)
–创建一个临时表
create table #output ( [ident] [int] IDENTITY (1, 1) NOT NULL ,
[real_decrypt] NVARCHAR(MAX) )
–开始一个事务，稍后回滚
BEGIN TRAN
–更改原始的存储过程，用短横线替换
if @objtype=’P’
SET @fake_01=’ALTER PROCEDURE ‘+ @procedure +’ WITH ENCRYPTION AS select 1
/**//*’+REPLICATE(cast(‘*’as nvarchar(max)), datalength(@real_01) /2 – @procNameLength)+’*/’
else if @objtype=’FN’
SET @fake_01=’ALTER FUNCTION ‘+ @procedure +'() RETURNS INT WITH ENCRYPTION AS BEGIN RETURN 1
/**//*’+REPLICATE(cast(‘*’as nvarchar(max)), datalength(@real_01) /2 – @procNameLength)+’*/ END’
else if @objtype=’V’
SET @fake_01=’ALTER view ‘+ @procedure +’ WITH ENCRYPTION AS select 1 as col
/**//*’+REPLICATE(cast(‘*’as nvarchar(max)), datalength(@real_01) /2 – @procNameLength)+’*/’
else if @objtype=’TR’
SET @fake_01=’ALTER trigger ‘+ @procedure +’ ON ‘+@parentname+’WITH ENCRYPTION AFTER INSERT AS RAISERROR (”N”,16,10)
/**//*’+REPLICATE(cast(‘*’as nvarchar(max)), datalength(@real_01) /2 – @procNameLength)+’*/’
EXECUTE (@fake_01)
–从sys.sysobjvalues里提出加密的假的
SET @fake_encrypt_01=(SELECT top 1 imageval FROM sys.sysobjvalues WHERE objid =
object_id(@procedure) and valclass = 1 order by subobjid )
if @objtype=’P’
SET @fake_01=’Create PROCEDURE ‘+ @procedure +’ WITH ENCRYPTION AS select 1
/**//*’+REPLICATE(cast(‘*’as nvarchar(max)), datalength(@real_01) /2 – @procNameLength)+’*/’
else if @objtype=’FN’
SET @fake_01=’CREATE FUNCTION ‘+ @procedure +'() RETURNS INT WITH ENCRYPTION AS BEGIN RETURN 1
/**//*’+REPLICATE(cast(‘*’as nvarchar(max)), datalength(@real_01) /2 – @procNameLength)+’*/ END’
