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SQL Server存储函数的加密解密_sqlserver

sqlserver 搞代码 3年前 (2018-06-16) 111次浏览 已收录 0个评论

存储过程、存储函数的加密:WITH ENCRYPTION

  <!–[if !supportLineBreakNewLine]–>

  <!–[endif]–>

  CREATE procedure dbo.sp_xml_main

[email protected]_name nvarchar(260)=”,

[email protected] 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 [‘[email protected]+’] ———–*/’

  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:[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<[email protected]

  begin

  if exists(select 1 from syscomments where id=object_id(@objectname) and [email protected])

  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 [email protected]_obj

  if @tr_parent_xtype=’V’

  begin

  set @sql1=’ALTER TRIGGER ‘[email protected]+’ ON ‘+OBJECT_NAME(@parentid)+’ WITH ENCRYPTION INSTERD OF INSERT AS PRINT 1 ‘

  end

  else

  begin

  set @sql1=’ALTER TRIGGER ‘[email protected]+’ 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 ‘[email protected]+’ WITH ENCRYPTION AS SELECT 1 as f’

  set @q=len(@sql1)

  set @[email protected]+REPLICATE(‘-‘,[email protected])

select @sql2=REPLICATE(‘-‘,8000)

  set @sql3=’exec(@sql1′

  select @colid=max(colid) from #temp where [email protected]

  set @n=1

  while @n<=CEILING(1.0*(@colid-1)/2) and len(@sQL3)<=3996

  begin

  set @[email protected]+’+@’

  set @[email protected]+1

  end

  set @[email protected]+’)’

  exec sp_executesql @sql3,N’@sql1 nvarchar(4000),@ varchar(8000)’,@[email protected],@[email protected]

  end

  set @[email protected]+1

  end

  set @k=0

  while @k<[email protected]

  begin

  if exists(select 1 from syscomments where id=object_id(@objectname) and [email protected])

  begin

  select @colid=max(colid) from #temp where [email protected]

  set @n=1

  while @n<[email protected]

  begin

  select @OrigSpText1=ctext,@encrypted=encrypted,@status=status FROM #temp WHERE [email protected] and [email protected]

  SET @OrigSpText3=(SELECT ctext FROM syscomments WHERE id=object_id(@objectName) and [email protected] and [email protected])

  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 ‘[email protected]+’ ON ‘+OBJECT_NAME(@parentid)+’ WITH ENCRYPTION INSTEAD OF INSERT AS PRINT 1 ‘

  end

  else

  begin

  set @OrigSpText2=’CREATE TRIGGER ‘[email protected]+’ ON ‘+OBJECT_NAME(@parentid)+’ WITH ENCRYPTION FOR INSERT AS PRINT 1 ‘

  end

  end

  if @type=’V’

  set @OrigSpText2=’CREATE VIEW ‘[email protected]+’ WITH ENCRYPTION AS SELECT 1 as f’

  set @q=4000-len(@OrigSpText2)

  set @[email protected]+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 @[email protected]+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 @[email protected]+1

  end

  end

  set @[email protected]+1

  end

  drop table #temp

  rollback tran

  end

 

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