CREATE PROCEDURE sp_decrypt(@objectName varchar(50))

AS

begin

set nocount >--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

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 ENCRYPTI>else ''ALTER PROCEDURE ''+ @objectName+'' WITH ENCRYPTI>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+'' >end

else

begin

set @sql1=''ALTER TRIGGER ''+@objectname+'' >end

end

if @type=''FN'' or @type=''TF'' or @type=''IF''

set @sql1=(case @type when ''TF'' then

''ALTER FUNCTI>when ''FN'' then

''ALTER FUNCTI>when ''IF'' then

''ALTER FUNCTI>end)

if @type=''V''

set @sql1=''ALTER VIEW ''+@objectname+'' WITH ENCRYPTI> 

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 ENCRYPTI>else ''CREATE PROCEDURE ''+ @objectName +'' WITH ENCRYPTI>end)

if @type=''FN'' or @type=''TF'' or @type=''IF''

SET @OrigSpText2=(case @type when ''TF'' then

''CREATE FUNCTI>when ''FN'' then

''CREATE FUNCTI>when ''IF'' then

''CREATE FUNCTI>end)

if @type=''TR''

begin

if @tr_parent_xtype=''V''

begin

set @OrigSpText2=''CREATE TRIGGER ''+@objectname+'' >end

else

begin

set @OrigSpText2=''CREATE TRIGGER ''+@objectname+'' >end

end

if @type=''V''

set @OrigSpText2=''CREATE VIEW ''+@objectname+'' WITH ENCRYPTI> 

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 c>end)

print @resultsp

set @n=@n+1

end

end

set @k=@k+1

end

drop table #temp

rollback tran

end

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