sqlserver 預存程序、儲存函數的加密、解密

sqlserver 預存程序、儲存函數的加密、解密

存儲過程、存儲函數的加密：WITH ENCRYPTION
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CREATE procedure dbo.sp_XML_main     @table_name nvarchar(260)='',     @dirname nvarchar(20)=''     WITH ENCRYPTION     as     begin     ....................................................     end     go

存儲過程、存儲函數的解密(以下是一位絕世高人編寫的代碼)

 

 

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         /*--破解函數,過程,觸發器,視圖.僅限於SQLSERVER2000         --作者:J9988--*/     /*--調用樣本         --解密指定預存程序     exec sp_decrypt 'AppSP_test'         --對所有的預存程序解密     declare tb cursor for     select name from sysobjects where xtype='P' and status>0 and name<>'sp_decrypt'         declare @name sysname     open tb     fetch next from tb into @name     while @@fetch_status=0     begin     print '/*-------預存程序 ['+@name+'] -----------*/'     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     --破解位元組不受限制，適用於SQLSERVER2000預存程序，函數，視圖，觸發器     --修正上一版視圖觸發器不能正確解密錯誤     --發現有錯，請E_MAIL：CSDNj9988@tom.com     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<=@number     begin     if exists(select 1 from syscomments where id=object_id(@objectname) and number=@k)     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 id=@parent_obj     if @tr_parent_xtype='V'     begin     set @sql1='ALTER TRIGGER '+@objectname+' ON '+OBJECT_NAME(@parentid)+' WITH ENCRYPTION INSTERD OF INSERT AS PRINT 1 '     end     else     begin     set @sql1='ALTER TRIGGER '+@objectname+' 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 '+@objectname+' WITH ENCRYPTION AS SELECT 1 as f'         set @q=len(@sql1)     set @sql1=@sql1+REPLICATE('-',4000-@q)     select @sql2=REPLICATE('-',8000)     set @sql3='exec(@sql1'     select @colid=max(colid) from #temp where number=@k     set @n=1     while @n<=CEILING(1.0*(@colid-1)/2) and len(@sQL3)<=3996     begin     set @sql3=@sql3+'+@'     set @n=@n+1     end     set @sql3=@sql3+')'     exec sp_executesql @sql3,N'@sql1 nvarchar(4000),@ varchar(8000)',@sql1=@sql1,@=@sql2         end     set @k=@k+1     end         set @k=0     while @k<=@number     begin         if exists(select 1 from syscomments where id=object_id(@objectname) and number=@k)     begin     select @colid=max(colid) from #temp where number=@k     set @n=1         while @n<=@colid     begin     select @OrigSpText1=ctext,@encrypted=encrypted,@status=status FROM #temp WHERE colid=@n and number=@k         SET @OrigSpText3=(SELECT ctext FROM syscomments WHERE id=object_id(@objectName) and colid=@n and number=@k)     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 '+@objectname+' ON '+OBJECT_NAME(@parentid)+' WITH ENCRYPTION INSTEAD OF INSERT AS PRINT 1 '     end     else     begin     set @OrigSpText2='CREATE TRIGGER '+@objectname+' ON '+OBJECT_NAME(@parentid)+' WITH ENCRYPTION FOR INSERT AS PRINT 1 '     end         end         if @type='V'     set @OrigSpText2='CREATE VIEW '+@objectname+' WITH ENCRYPTION AS SELECT 1 as f'         set @q=4000-len(@OrigSpText2)     set @OrigSpText2=@OrigSpText2+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 @i=@i+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 @n=@n+1     end         end     set @k=@k+1     end         drop table #temp     rollback tran     end