SqlServer存储过程函数加解密

SqlServer存储过程/函数加/解密

存储过程、存储函数的加密：WITH ENCRYPTION
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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

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-- All rights reserved*/

/*--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

--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：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

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