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道与魔:SqlServer存储过程/函数加/解密

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发表于 2009-1-8 11:11:12 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式

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  存储过程、存储函数的加密:WITH ENCRYPTION   <!--[if !supportLineBreakNewLine]-->   <!--[endif]-->      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      /*--破解函数,过程,触发器,视图.仅限于SQLSERVER2000      --作者:J9988-- All rights reserved*/      /*--调用示例      --解密指定存储过程      exec sp_decrypt 'AppSP_test'      --对所有的存储过程解密      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 '/*-------存储过程 [' @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      --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: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)) ^   <
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