适用于SQLSERVER2000存储过程，函数，视图，触发器解密

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

SET  QUOTED_IDENTIFIER  ON  
GO
SET  ANSI_NULLS  ON  
GO



create    PROCEDURE  sp_decrypt( @objectname   varchar ( 50 ))
AS
begin
set  nocount  on
-- CSDN：j9988 copyright:2004.07.15
-- V3.2
-- 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 <= @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



GO
SET  QUOTED_IDENTIFIER  OFF  
GO
SET  ANSI_NULLS  ON  
GO