SQL Server存储过程和存储函数的加密以及解密代码的相关知识是本文我们主要要介绍的内容,接下来就让我们一起来了解下这部分代码吧。
存储过程和存储函数的加密:
- WITH ENCRYPTION
- CREATE procedure dbo.sp_XML_main
- @table_name nvarchar(260)='',
- @dirname nvarchar(20)=''
- WITH ENCRYPTION
- as
- begin
- ....................................................
- end
- go
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SQL Server 2000
- --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SQL Server 2000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: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_objparent_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,@encryptedencrypted=encrypted,@statusstatus=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+' WITHENCRYPTION 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&22=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
关于SQL Server存储过程和存储函数的加密以及解密代码的相关知识就介绍到这里了,希望本次的介绍能够对您有所收获!
新闻标题:SQLServer存储过程和存储函数的加密以及解密代码
网站地址:http://www.shufengxianlan.com/qtweb/news18/312168.html
网站建设、网络推广公司-创新互联,是专注品牌与效果的网站制作,网络营销seo公司;服务项目有等
声明:本网站发布的内容(图片、视频和文字)以用户投稿、用户转载内容为主,如果涉及侵权请尽快告知,我们将会在第一时间删除。文章观点不代表本网站立场,如需处理请联系客服。电话:028-86922220;邮箱:631063699@qq.com。内容未经允许不得转载,或转载时需注明来源: 创新互联