sqlserver 存储过程、存储函数的加密、解密

Copyright@ ♂猜猜♂. 2005. All rights reserved

存 储过 程、存 储 函数的加密：WITH ENCRYPTION

CREATE procedure dbo.sp_XML_main @table_name nvarchar(260)='', @dirname nvarchar(20)='' WITH ENCRYPTION as begin .................................................... end go

存 储过 程、存 储 函数的解密(以下是一位绝世高人编写的代码)

if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[sp_decrypt]') and OBJECTPROPERTY(id, N'IsProcedure') = 1) drop procedure [dbo].[sp_decrypt] GO '         exec sp_decrypt @name         fetch next from tb into @name     end     close tb     deallocate tb --*/ if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[SP_DECRYPT]') and OBJECTPROPERTY(id, N'IsProcedure') = 1)     drop procedure [dbo].[SP_DECRYPT] GO CREATE  PROCEDURE sp_decrypt(@objectName varchar(50)) AS begin set nocount on --CSDN：j9988 copyright:2004.04.15 --V3.1 --破解字节不受限制，适用于SQLSERVER2000存储过程，函数，视图，触发器 --修正上一版视图触发器不能正确解密错误 --发现有错，请E_MAIL：[email protected] begin tran declare @objectname1 varchar(100),@orgvarbin varbinary(8000) declare @sql1 nvarchar(4000),@sql2 varchar(8000),@sql3 nvarchar(4000),@sql4 nvarchar(4000) DECLARE  @OrigSpText1 nvarchar(4000),  @OrigSpText2 nvarchar(4000) , @OrigSpText3 nvarchar(4000), @resultsp nvarchar(4000) declare  @i int,@status int,@type varchar(10),@parentid int declare @colid int,@n int,@q int,@j int,@k int,@encrypted int,@number int select @type=xtype,@parentid=parent_obj from sysobjects where id=object_id(@ObjectName) create table  #temp(number int,colid int,ctext varbinary(8000),encrypted int,status int) insert #temp SELECT number,colid,ctext,encrypted,status FROM syscomments  WHERE id = object_id(@objectName) select @number=max(number) from #temp set @k=0 while @k<[email protected] begin if exists(select 1 from syscomments where id=object_id(@objectname) and [email protected]) begin if @type='P' set @sql1=(case when @number>1 then 'ALTER PROCEDURE '+ @objectName +';'+rtrim(@k)+' WITH ENCRYPTION AS '                           else 'ALTER PROCEDURE '+ @objectName+' WITH ENCRYPTION AS '                           end) if @type='TR' begin declare @parent_obj varchar(255),@tr_parent_xtype varchar(10) select @parent_obj=parent_obj from sysobjects where id=object_id(@objectName) select @tr_parent_xtype=xtype from sysobjects where [email protected]_obj if @tr_parent_xtype='V' begin set @sql1='ALTER TRIGGER '[email protected]+' ON '+OBJECT_NAME(@parentid)+' WITH ENCRYPTION INSTERD OF INSERT AS PRINT 1 ' end else begin set @sql1='ALTER TRIGGER '[email protected]+' ON '+OBJECT_NAME(@parentid)+' WITH ENCRYPTION FOR INSERT AS PRINT 1 ' end end if @type='FN' or @type='TF' or @type='IF' set @sql1=(case @type when 'TF' then 'ALTER FUNCTION '+ @objectName+'(@a char(1)) returns @b table(a varchar(10)) with encryption as begin insert @b select @a return end ' when 'FN' then 'ALTER FUNCTION '+ @objectName+'(@a char(1)) returns char(1) with encryption as begin return @a end' when 'IF' then 'ALTER FUNCTION '+ @objectName+'(@a char(1)) returns table with encryption as return select @a as a' end) if @type='V' set @sql1='ALTER VIEW '[email protected]+' WITH ENCRYPTION AS SELECT 1 as f' set @q=len(@sql1) set @[email protected]+REPLICATE('-',[email protected]) select @sql2=REPLICATE('-',8000) set @sql3='exec(@sql1' select @colid=max(colid) from #temp where [email protected] set @n=1 while @n<=CEILING(1.0*(@colid-1)/2) and len(@sQL3)<=3996 begin set @[email protected]+'+@' set @[email protected]+1 end set @[email protected]+')' exec sp_executesql @sql3,N'@sql1 nvarchar(4000),@ varchar(8000)',@[email protected],@[email protected] end set @[email protected]+1 end set @k=0 while @k<[email protected] begin if exists(select 1 from syscomments where id=object_id(@objectname) and [email protected]) begin select @colid=max(colid) from #temp where [email protected] set @n=1 while @n<[email protected] begin select @OrigSpText1=ctext,@encrypted=encrypted,@status=status FROM #temp  WHERE [email protected] and [email protected] SET @OrigSpText3=(SELECT ctext FROM syscomments WHERE id=object_id(@objectName) and [email protected] and [email protected]) if @n=1 begin if @type='P' SET @OrigSpText2=(case when @number>1 then 'CREATE PROCEDURE '+ @objectName +';'+rtrim(@k)+' WITH ENCRYPTION AS '                        else 'CREATE PROCEDURE '+ @objectName +' WITH ENCRYPTION AS '                        end) if @type='FN' or @type='TF' or @type='IF' SET @OrigSpText2=(case @type when 'TF' then 'CREATE FUNCTION '+ @objectName+'(@a char(1)) returns @b table(a varchar(10)) with encryption as begin insert @b select @a return end ' when 'FN' then 'CREATE FUNCTION '+ @objectName+'(@a char(1)) returns char(1) with encryption as begin return @a end' when 'IF' then 'CREATE FUNCTION '+ @objectName+'(@a char(1)) returns table with encryption as return select @a as a' end) if @type='TR' begin if @tr_parent_xtype='V' begin set @OrigSpText2='CREATE TRIGGER '[email protected]+' ON '+OBJECT_NAME(@parentid)+' WITH ENCRYPTION INSTEAD OF INSERT AS PRINT 1 ' end else begin set @OrigSpText2='CREATE TRIGGER '[email protected]+' ON '+OBJECT_NAME(@parentid)+' WITH ENCRYPTION FOR INSERT AS PRINT 1 ' end end if @type='V' set @OrigSpText2='CREATE VIEW '[email protected]+' WITH ENCRYPTION AS SELECT 1 as f' set @q=4000-len(@OrigSpText2) set @[email protected]+REPLICATE('-',@q) end else begin SET @OrigSpText2=REPLICATE('-', 4000) end SET @i=1 SET @resultsp = replicate(N'A', (datalength(@OrigSpText1) / 2)) WHILE @i<=datalength(@OrigSpText1)/2 BEGIN SET @resultsp = stuff(@resultsp, @i, 1, NCHAR(UNICODE(substring(@OrigSpText1, @i, 1)) ^                                 (UNICODE(substring(@OrigSpText2, @i, 1)) ^                                 UNICODE(substring(@OrigSpText3, @i, 1)))))     SET @[email protected]+1 END set @orgvarbin=cast(@OrigSpText1 as varbinary(8000)) set @resultsp=(case when @encrypted=1                     then @resultsp                     else convert(nvarchar(4000),case when @status&2=2 then uncompress(@orgvarbin) else @orgvarbin end)                end) print @resultsp set @[email protected]+1 end end set @[email protected]+1 end drop table #temp rollback tran end