Re: [TLS] early IANA code point assignment request for draft-ietf-tls-ecdhe-psk-aead
Daniel Migault <daniel.migault@ericsson.com> Mon, 17 October 2016 16:04 UTC
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From: Daniel Migault <daniel.migault@ericsson.com>
Date: Mon, 17 Oct 2016 12:03:58 -0400
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To: Martin Thomson <martin.thomson@gmail.com>
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Subject: Re: [TLS] early IANA code point assignment request for draft-ietf-tls-ecdhe-psk-aead
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Hi, I am not clear what the consensus is for the following points. Is there any consensus for requesting the following ones? BR, Daniel TLS_ECDHE_PSK_WITH_AES_128_GCM_SHA256 = {0xTBD; 0xTBD} {0xD0,0x01}; TLS_ECDHE_PSK_WITH_AES_256_GCM_SHA384 = {0xTBD; 0xTBD} {0xD0,0x02}; TLS_ECDHE_PSK_WITH_AES_128_CCM_8_SHA256 = {0xTBD; 0xTBD} {0xD0,0x03}; TLS_ECDHE_PSK_WITH_AES_256_CCM_8_SHA384 = {0xTBD; 0xTBD} {0xD0,0x04}; TLS_ECDHE_PSK_WITH_AES_128_CCM_SHA256 = {0xTBD; 0xTBD} {0xD0,0x05}; TLS_ECDHE_PSK_WITH_AES_256_CCM_SHA384 = {0xTBD; 0xTBD} {0xD0,0x06}; On Sun, Oct 9, 2016 at 7:11 PM, Martin Thomson <martin.thomson@gmail.com> wrote: > I'm mainly just looking to economize on different configurations. > > On 9 October 2016 at 16:32, John Mattsson <john.mattsson@ericsson.com> > wrote: > > Hi Martin, > > > > > > AES_256_CCM_8 was not in the first versions of the draft but added later > > after request from IoT people (probably afraid of quantum computers). > > > > > > While I think it makes very much sense to have short tags in wireless > > radio, I do not know how large need there is for AES-256 in IoT for > > constrained devices, or how large the need would be to truncate the tag > in > > these cases. > > > > > > My current understanding is that Grover’s algorithm may never be more > > cost-effective than a cluster of classical computers, and that quantum > > computers therefore likely do not affect the lifetime of AES-128. > > > > > > I do not have any strong opinions regarding keeping AES_256_CCM_8 or not. > > We should not give the impression that AES-256 is needed for practical > > resistance to quantum computers anytime soon, it is however a requirement > > for use by US government. Agree that AES_128_CCM_8 and AES_256_CCM seems > > like the best choices in most cases. > > > > > > Cheers, > > John > > > > > > > > On 12/08/16 08:29, "TLS on behalf of Martin Thomson" < > tls-bounces@ietf.org > > on behalf of martin.thomson@gmail.com> wrote: > > > >>Looking at those emails, I am prompted to wonder if anyone can justify > >>the existence of a ciphersuite with a double-sized key and half-sized > >>authentication tag. RFC 6655 doesn't really explain how that is a > >>useful thing. > >> > >>On 10 August 2016 at 19:33, Nikos Mavrogiannopoulos <nmav@redhat.com> > >>wrote: > >>> On Tue, 2016-08-09 at 14:45 -0400, Sean Turner wrote: > >>>> All, > >>>> > >>>> We've received a request for early IANA assignments for the 6 cipher > >>>> suites listed in https://datatracker.ietf.org/doc/draft-ietf-tls-ecdh > >>>> e-psk-aead/. Please respond before August 23rd if you have concerns > >>>> about early code point assignment for these cipher suites. > >>> > >>> I have previously raised an issue [0] on these ciphersuites. The same > >>> requirement was noted also by Peter Dettman as something special in > >>> [1]. However, there has been no reaction from the authors (now in CC). > >>> > >>> regards, > >>> Nikos > >>> > >>> [0]. > >>>https://mailarchive.ietf.org/arch/msg/tls/4PZsc_Dy-aT299BYrlBKvZs0BOQ > >>> [1]. > >>>https://mailarchive.ietf.org/arch/msg/tls/onEkdgH30eZgWs8v5Rp-CUqCHds > >>> > >>> _______________________________________________ > >>> TLS mailing list > >>> TLS@ietf.org > >>> https://www.ietf.org/mailman/listinfo/tls > >> > >>_______________________________________________ > >>TLS mailing list > >>TLS@ietf.org > >>https://www.ietf.org/mailman/listinfo/tls > > > > _______________________________________________ > TLS mailing list > TLS@ietf.org > https://www.ietf.org/mailman/listinfo/tls >
- Re: [TLS] early IANA code point assignment reques… Martin Thomson
- Re: [TLS] early IANA code point assignment reques… Nikos Mavrogiannopoulos
- Re: [TLS] early IANA code point assignment reques… Martin Thomson
- [TLS] early IANA code point assignment request fo… Sean Turner
- Re: [TLS] early IANA code point assignment reques… Peter Gutmann
- Re: [TLS] early IANA code point assignment reques… John Mattsson
- Re: [TLS] early IANA code point assignment reques… Martin Thomson
- Re: [TLS] early IANA code point assignment reques… Daniel Migault
- Re: [TLS] early IANA code point assignment reques… Russ Housley
- Re: [TLS] early IANA code point assignment reques… Daniel Migault
- Re: [TLS] early IANA code point assignment reques… Sean Turner
- Re: [TLS] early IANA code point assignment reques… Xiaoyin Liu
- Re: [TLS] early IANA code point assignment reques… Ilari Liusvaara
- Re: [TLS] early IANA code point assignment reques… Daniel Migault
- Re: [TLS] early IANA code point assignment reques… Ilari Liusvaara
- Re: [TLS] early IANA code point assignment reques… Daniel Migault