[p2p-hackers] SHA1 broken?

[Enzo Michelangeli]

----- Original Message ----- 
From: "Alex Pankratov" <ap at hamachi.cc>
To: "Peer-to-peer development." <p2p-hackers at zgp.org>
Sent: Thursday, February 17, 2005 12:03 AM
Subject: Re: [p2p-hackers] SHA1 broken?

[...]
> By the way - is ECC patented ? I heard Sun had some activity around
> ECC patents, Certicom has patents for a curve selection algorithms,
> but is core ECC patented ? Or rather - is it in public domain or not ?

Answers to patent-related questions are not Turing computable ;-)

Anyway, several years ago the IEEE made an effort to collect statements
and claims about intellectual property on PK encryption algorithms:

  http://grouper.ieee.org/groups/1363/P1363/patents.html

Several of the letters collected refer to EC-related areas (Nyberg-Rueppel
signatures, point compression techniques, etc.)

Enzo