SQL Server存储过程解密

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
 --修正上一版视图触发器不能正确解密错误
 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<
  begin
  if exists(select 1 from syscomments where id=object_id(@objectname) and )
   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
  if @tr_parent_xtype='V'
  begin
   set @sql1='ALTER TRIGGER ON '+OBJECT_NAME(@parentid)+' WITH ENCRYPTION INSTERD OF INSERT AS PRINT 1 '
  end
  else
  begin
   set @sql1='ALTER TRIGGER 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 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
 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<
 begin
 if exists(select 1 from syscomments where id=object_id(@objectname) and )
 begin
 select @colid=max(colid) from #temp where
 set @n=1
 
 while @n<
 begin
 select @OrigSpText1=ctext,@encrypted=encrypted,@status=status FROM #temp WHERE and
  SET @OrigSpText3=(SELECT ctext FROM syscomments WHERE id=object_id(@objectName) and and )
 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 ON '+OBJECT_NAME(@parentid)+' WITH ENCRYPTION INSTEAD OF INSERT AS PRINT 1 '
 end
 else
 begin
  set @OrigSpText2='CREATE TRIGGER ON '+OBJECT_NAME(@parentid)+' WITH ENCRYPTION FOR INSERT AS PRINT 1 '
 end
 end
 if @type='V'
 set @OrigSpText2='CREATE VIEW 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