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SqlServer存储过程/函数加/解密(二)
2014-11-23 21:29:19 来源: 作者: 【 】 浏览:31
Tags:SqlServer 存储 过程 函数 解密
emp 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(NA, (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(@

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