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Subject: FWD: *20/poly1305 as aead mechanism
hey, as per Chris' request: On Fri, Jan 12, 2018 at 04:58:21PM -0500, Chris Zimman wrote: > Any of this discussion belong on the PKCS11 TC mailing list. > Can you please re-submit your questions/comments to pkcs11@lists.oasis-open.org ? sure. done with this mail. > On 1/12/18, 4:32 PM, "stef" <oasis@ctrlc.hu> wrote: > > Dear Chris, > > i'm new to the PKCS#11 TC, and i submitted an update: > https://www.oasis-open.org/apps/org/workgroup/pkcs11/document.php?document_id=62236 > to your proposal: > https://www.oasis-open.org/apps/org/workgroup/pkcs11/document.php?document_id=58554 > > in this weeks conf call my proposal was discussed: > https://wiki.oasis-open.org/pkcs11/Meetingminutes/Minutes10012018 > Bob had a comment: > > > "Bob: ChaCha and Poly are currently two separate mechanisms. Stef notes > > ChaCha and Salsa can be used interchangeably, some apps use one or the > > other. Bob - we may want to look at the AES CCM/GCM to see if we could have > > a combined mechanisms. Stef agrees that it may be worth looking at in > > respect to AEAD manner. Stef will make sure he's following the AEAD > > proposal" > > which is correct, and i never heard of salsa/chacha being used without > poly1305. and i wondered, did you have any plans regarding this? > > don't you think it makes more sense to create mechanisms combining the > chacha/salsa stream ciphers with the poly1305 mac? so instead of what we have > now as mechanisms, we will have > > chacha20/poly1305 > chacha20_ietf/poly1305 > xchacha20/poly1305 > xsalsa20/poly1305 > salsa20/poly1305 > > or did you have any other plans? > > most importantly the AEAD only works in a combination of these two, and indeed > the AEAD is necessary for achieving support of the signal protocol. > > thanks for any insights, > s > > ps: also cc-ing Bob, maybe he has some ideas/plans regarding this. > > > > ---end quoted text---
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