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sqlserver 存储过程、存储函数的加密、解密

2013年12月03日 ⁄ 综合 ⁄ 共 5606字 ⁄ 字号 评论关闭
Copyright@ ♂猜猜♂. 2005. All rights reserved

储过程、存函数的加密:WITH ENCRYPTION

CREATE
procedure dbo.sp_XML_main

@table_name
nvarchar(260)='',

@dirname
nvarchar(20)=''

WITH
ENCRYPTION

as

begin

....................................................

end

go

储过程、存函数的解密(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--*/

/*--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

--CSDNj9988 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_MAILCSDNj9988@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

 

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