SQL Server存储函数的加密解密

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  server|函数|加密|解密

存储过程、存储函数的加密:WITH ENCRYPTION

  <!--[if !supportLineBreakNewLine]-->

  <!--[endif]-->

  CREATE procedure dbo.sp_XML_main

  table_name nvarchar(260)='',

  dirname nvarchar(20)=''

  WITH ENCRYPTION

  as

  begin

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

  end

  go

  存储过程、存储函数的解密(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

  --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:CSDNj9988tom.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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