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 encryption 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
rollback transaction
end
解密SQL2000的儲存過程
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sql2000儲存過程
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