Re: [Cfrg] Postquantum cryptography in IETF protocols
William Whyte <wwhyte@onboardsecurity.com> Tue, 14 March 2017 19:35 UTC
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From: William Whyte <wwhyte@onboardsecurity.com>
Date: Tue, 14 Mar 2017 15:34:56 -0400
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To: "Tams, Benjamin" <Benjamin.Tams@secunet.com>
Cc: "cfrg@irtf.org" <cfrg@irtf.org>
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Subject: Re: [Cfrg] Postquantum cryptography in IETF protocols
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I should note that Security Innovation, which owns the patents for NTRU and which I work for, has announced an intent to make the NTRUEncrypt IP public domain. A formal announcement should follow shortly. Cheers, William On Tue, Mar 14, 2017 at 1:31 PM, Tams, Benjamin <Benjamin.Tams@secunet.com> wrote: > Hi John, > > > Good that CFRG starts some more detailed discussion on PQC. It makes > sense > > to support post-quantum key exchange for use cases that need long-term > > confidentiality (15 years). For other use cases I think it can wait until > > PQC key exchange algorithms has been thoroughly evaluated and > > standardized. If implemented now, it should be used in addition to ECDHE, > > just like Google has done with their experimental New Hope > implementation. > > I absolutely agree with your view on the subject. Especially for those use > cases where the attack scenario "collect today, decrypt tomorrow" is a > threat, > we should start thinking of PQ-safe key exchange methods in time. Even if > they eventually turn out to be insecure; we can now combine them with > classical key exchange algorithms. We have nothing to lose. > > There is already IETF work addressing PQ-security in Internet protocols, > e.g. > IKE and an Internet Draft for a Quantum-Safe Hybrid Ciphersuite for TLS > > https://tools.ietf.org/html/draft-fluhrer-qr-ikev2-03 > https://tools.ietf.org/html/draft-whyte-qsh-tls13-03 > > On the other hand, there is (to my knowledge) no specification for a > PQ-safe > patent-free key exchange algorithm suitable for implementation. In fact, in > https://tools.ietf.org/html/draft-whyte-qsh-tls13-03 > only NTRUEncrypt is specified but is subject to patents. > > A possible first step is that CFRG creates an Internet Draft. In fact, > the algorithm New Hope has already been implemented as a plugin for > strongSwan (IPSec implementation for the Linux kernel) > > https://github.com/strongswan/strongswan/tree/master/src/ > libstrongswan/plugins/newhope > > So why do we not start with a draft for which the above implementation can > serve as a reference implementation? > > Kind regards, > Benjamin > > > _______________________________________________ > Cfrg mailing list > Cfrg@irtf.org > https://www.irtf.org/mailman/listinfo/cfrg >
- [Cfrg] Postquantum cryptography in IETF protocols John Mattsson
- Re: [Cfrg] Postquantum cryptography in IETF proto… David McGrew (mcgrew)
- Re: [Cfrg] Postquantum cryptography in IETF proto… Tams, Benjamin
- Re: [Cfrg] Postquantum cryptography in IETF proto… William Whyte
- Re: [Cfrg] Postquantum cryptography in IETF proto… Watson Ladd
- Re: [Cfrg] Postquantum cryptography in IETF proto… Tams, Benjamin
- Re: [Cfrg] Postquantum cryptography in IETF proto… Tams, Benjamin
- Re: [Cfrg] Postquantum cryptography in IETF proto… William Whyte
- Re: [Cfrg] Postquantum cryptography in IETF proto… Ilari Liusvaara
- Re: [Cfrg] Postquantum cryptography in IETF proto… William Whyte
- Re: [Cfrg] Postquantum cryptography in IETF proto… John Mattsson
- Re: [Cfrg] Postquantum cryptography in IETF proto… William Whyte
- Re: [Cfrg] Postquantum cryptography in IETF proto… Aaron Zauner
- Re: [Cfrg] Postquantum cryptography in IETF proto… Tams, Benjamin
- Re: [Cfrg] Postquantum cryptography in IETF proto… Paterson, Kenny
- Re: [Cfrg] Postquantum cryptography in IETF proto… William Whyte
- Re: [Cfrg] Postquantum cryptography in IETF proto… Paterson, Kenny