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：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