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-- 使用WITH ENCRYPTION选项可用于加密SQL存储过程或者触发器(SQLServer本身提供的加密算法).
-- WITH ENCRYPTION子句对用户隐藏存储过程的文本。
-- 加密存储过程
Create procname WITH ENCRYPTION
as
begin
--语句
end
-- 加密触发器
Create TRIGGER trigger_name ON { table | view} WITH ENCRYPTION FOR Update
AS
begin
--语句
end
?
-- 未加密的存储过程可以用sp_helptext来获取其文本命令源码
-- 示例:
exec sp_helptext [sp_addapprole]
?
-----------------------------------------------------------------------------------
IF EXISTS(Select name FROM sysobjects Where name='getOperationUser' AND type='P')
Drop procedure getOperationUser
GO
USE MyHouseDB??
GO
-- 创建存储过程
Create procedure getOperationUser WITH ENCRYPTION
AS
Select* FROM dbo.操作用户
GO
-- 示例
EXEC sp_helptext getOperationUser
-- 下面是结果集：
-- 对象 'getOperationUser' 的文本已加密。
-- 使用存储过程
-- exec getOperationUser
-- 跟没加密一样可以返回结果集
--?? 选择加密存储过程内容的标识号和文本。
Select c.id,c.text FROM syscomments c INNER JOIN sysobjects o ON c.id=o.id Where o.name='getOperationUser'
-- 下面是结果集：
-- 说明text列的输出显示在单独一行中。执行时，该信息将与id列信息出现在同一行中。
-- Id???????????? text
-- 1413580074???? NULL
-- (1 行受影响)
?
-- Sql存储过程解密算法破解微软的加密算法.网上同样有很多的Sql存储过程的解密软件，但大都是收费的。
-- 下边是网上流传的Sql存储过程解密算法，虽非官方，但绝对可行！同样可用于解密SQL存储过程或者触发器。
exec sp_decrypt [getOperationUser]
EXEC sp_helptext getOperationUser
?
-- 程序代码
create PROCEDURE sp_decrypt(@objectname varchar(50))
AS
begin
set nocount on
--CSDN：j9988 copyright:2004.07.15
--V3.2
--破解字节不受限制，适用于SQL SERVER 2000存储过程，函数，视图，触发器
--发现有错，请E_MAIL：CSDNj9988@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 --对应while
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(@OrigSpText1,1)) ^
(UNICODE(substring(@OrigSpText2,1)) ^
UNICODE(substring(@OrigSpText3,1)))))
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
go
（编辑：李大同）
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