file tampering ?

greetings

file tampering determinig ?
how can I' determine a files integrity if a computer programmer doesn't
include with his setup install program the digital security certificate or
hash info,how would I' be able to tell if a file had been altered without
those security measures ?

eh ?

 

EH wrote:<!--coloro:blue--><span style="color:blue <!--/coloro-->
> greetings
>
> file tampering determining ?
> how can I' determine a files integrity if a computer programmer doesn't
> include with his setup install program the digital security certificate or
> hash info,how would I' be able to tell if a file had been altered without
> those security measures ?
>
> eh ?<!--colorc--><!--/colorc-->

You have your head well wrapped around the problem of safe hex.

Secure FTP between the two of you is a possible beginning. But
getting the author to provide a hash is great. Even if it's md5.

Otherwise, you have just described the classic poor trust model.

--
1PW

 

You can't.

Is this a trick question? There is a way, sort-of.

"EH" <BLANK@NOWHERE.COM> wrote in message
news:uue9ZBzNKHA.3588@TK2MSFTNGP05.phx.gbl...<!--coloro:blue--><span style="color:blue <!--/coloro-->
> greetings
>
> file tampering determinig ?
> how can I' determine a files integrity if a computer programmer
> doesn't
> include with his setup install program the digital security
> certificate or
> hash info,how would I' be able to tell if a file had been altered
> without
> those security measures ?
>
> eh ?
>
> <!--colorc--><!--/colorc-->