不破坏原加密存储的存储解密

实为 转贴j9988+原创

  begin transaction --playyuer 原创
  exec sp_decrypt 'AppSP_test' --j9988 原创
  rollback transaction --playyuer 原创

  or:或者直接用 transaction 把 j9988 包起来!
  begin transaction
  j9988
  rollback transaction

  /************* 解密存储过程 **********
  ------------------------sql2000大于40000的------
  原作：j9988 号:J老师
  */
  alter PROCEDURE sp_decrypt (@objectName varchar(50))
  AS
  begin

  begin transaction --add by playyuer

  declare @objectname1 varchar(100)
  declare @sql1 nvarchar(4000),@sql2 nvarchar(4000),@sql3 nvarchar(4000),@sql4         nvarchar(4000),@sql5 nvarchar(4000),@sql6 nvarchar(4000),@sql7 nvarchar(4000),@sql8   nvarchar(4000),@sql9 nvarchar(4000),@sql10 nvarchar(4000) 
  DECLARE @OrigSpText1 nvarchar(4000), @OrigSpText2 nvarchar(4000) ,   @OrigSpText3 nvarchar(4000), @resultsp nvarchar(4000)
  declare @i int , @t bigint
  declare @m int,@n int,@q int
  set @m=(SELECT max(colid) FROM syscomments WHERE id = object_id  (@objectName))
 set @n=1
  --get encrypted data
  create table #temp(colid int,ctext varbinary(8000))
  insert #temp SELECT colid,ctext FROM syscomments WHERE id = object_id  (@objectName)
vset @sql1='ALTER PROCEDURE '+ @objectName +' WITH ENCRYPTION AS '
  --set @sql1='ALTER PROCEDURE '+ @objectName +' WITH ENCRYPTION AS '
  set @q=len(@sql1)
  set @sql1=@sql1+REPLICATE('-',4000-@q)
  select @sql2=REPLICATE('-',4000),@sql3=REPLICATE('-',4000),@sql4=REPLICATEv('-',4000),@sql5=REPLICATE('-  ',4000),@sql6=REPLICATE('-',4000),@sql7=REPLICATE('-',4000),@sql8=REPLICATE   ('-',4000),@sql9=REPLICATE('-  ',4000),@sql10=REPLICATE('-',4000)
  exec(@sql1+@sql2+@sql3+@sql4+@sql5+@sql6+@sql7+@sql8+@sql9+@sql10)
  while @n<=@m
  begin
  SET @OrigSpText1=(SELECT ctext FROM #temp WHERE colid=@n)
  set @objectname1=@objectname+'_t'
  SET @OrigSpText3=(SELECT ctext FROM syscomments WHERE id=object_id  (@objectName) and colid=@n)
  if @n=1
  begin
  SET @OrigSpText2='CREATE PROCEDURE '+ @objectName +' WITH vENCRYPTION AS '--
  set @q=4000-len(@OrigSpText2)
  set @OrigSpText2=@OrigSpText2+REPLICATE('-',@q)
  end
  else
  begin
  SET @OrigSpText2=REPLICATE('-', 4000)
  end 
--start counter
  SET @i=1
  --fill temporary variable
  SET @resultsp = replicate(N'A', (datalength(@OrigSpText1) / 2))

  --loop
  WHILE @i<=datalength(@OrigSpText1)/2
  BEGIN
  --reverse encryption (XOR original+bogus+bogus encrypted)
  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
  --drop original SP
  --EXECUTE ('drop PROCEDURE '+ @objectName)
  --remove encryption
  --preserve case
  SET @resultsp=REPLACE((@resultsp),'WITH ENCRYPTION', '')
  SET @resultsp=REPLACE((@resultsp),'With Encryption', '')
  SET @resultsp=REPLACE((@resultsp),'with encryption', '')
  IF CHARINDEX('WITH ENCRYPTION',UPPER(@resultsp) )>0 
  SET @resultsp=REPLACE(UPPER(@resultsp),'WITH ENCRYPTION', '')
  --replace Stored procedure without enryption
  print @resultsp
  --execute( @resultsp)
  set @n=@n+1
  end
  drop table #temp
  end
  rollback transaction --add by playyuer
  GO

  /*
  适合40000字符。
  每次4000　print出来，自已贴。
  切记：我见过的解过程都是对原过程进行破坏。破解前一定要备份!!!!
  超过40000的，自已加SQL（我上面用SQL.SQL2－－SQL10）
  超长的可加SQL11--sql20........
  */

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