Re: About PGP Signing a File.



John Dangler wrote:
On Sun, 2007-02-11 at 02:24 -0500, Matthew Flaschen wrote:
Joel Bryan Juliano wrote:
Hi,

I have a question regarding signing a file or binary, I installed
Seahorse which is really awesome tool! And it has a nautilus-extension
that easily Encrypt and Sign a file or directory by right-clicking the
file. Can someone please tell me the use of signing a binary file or
directory? I know it's important, but I really don't get it.
There's no use, unless you're planning on sending the file to someone.
If you do send it to someone, they can check the signature to verify you
sent it. Emails and most forms of electronic communication can be
easily forged, but signatures can't be.

As in - gpg: armor header: Version: GnuPG v1.4.3 (GNU/Linux)
gpg: armor header: Comment: Using GnuPG with Mozilla -
http://enigmail.mozdev.org
gpg: Signature made Sun 11 Feb 2007 02:24:30 AM EST using DSA key ID
3BBDED59
gpg: Can't check signature: public key not found

(this is what I see on your signature of your emails to the list)...

You need to import his public key from a key server somewhere and add it
to your keyring.

The question then is how much do you trust this key that you believe
belongs to a certain person?

Regards,
Tony.
--
Tony Arnold, IT Security Coordinator, University of Manchester,
IT Services Division, Kilburn Building, Oxford Road, Manchester M13 9PL.
T: +44 (0)161 275 6093, F: +44 (0)870 136 1004, M: +44 (0)773 330 0039
E: tony.arnold@xxxxxxxxxxxxxxxx, H: http://www.man.ac.uk/Tony.Arnold

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