non-repudiation (was Re: [Cfrg] Request For Opinions)

[Carl Ellison <cme@jf.intel.com>]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

At 11:52 AM 5/5/2003 -0400, jsjoberg@toplayer.com wrote:
>Hey all,
>
>I'm in an ETSI working group and we are trying to find a way to
>provide integrity checks along with non-repudiation on a
>theoretically infinite amount of data delivered over a network at
>10's to 100's Mbps.

I wish you would define "non-repudiation" - or not use the term.

The way it is defined in common practice is that a person is held
legally responsible for the actions of some cryptographic key that
signs what is interpreted as a contract.

Are you having a contract containing potentially infinite data?

Then, back to the normal use of non-repudiation, this is not a
cryptographic problem.  It's a full system and encironment problem. 
What mechanisms (rooms, computers, sensors, ...) are you proposing
for observing human behavior and indications of human intent so that
you can make a claim of non-repudiation?

Or, do you have some specialized definition for the term?

 - Carl

-----BEGIN PGP SIGNATURE-----
Version: PGP 7.1

iQA/AwUBPr1xs8xqBGb+WvJAEQIL3QCgzIvlnTttJxWGKJphgSU81qs4k3QAn06I
w+hMC153mLi78XcM4odjhjP5
=MWNv
-----END PGP SIGNATURE-----


+--------------------------------------------------------+
|Carl Ellison      Intel R & D       E: cme@jf.intel.com |
|2111 NE 25th Ave                    T: +1-503-264-2900  |
|Hillsboro OR 97124                  F: +1-503-264-6225  |
|PGP Key ID: 0xFE5AF240                                  |
|  1FDB 2770 08D7 8540 E157  AAB4 CC6A 0466 FE5A F240    |
+--------------------------------------------------------+
_______________________________________________
Cfrg mailing list
Cfrg@ietf.org
https://www1.ietf.org/mailman/listinfo/cfrg