[WIP] MSC3726: Safer Password-based Authentication with BS-SPEKE#3726
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cvwright wants to merge 8 commits intomatrix-org:mainfrom
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[WIP] MSC3726: Safer Password-based Authentication with BS-SPEKE#3726cvwright wants to merge 8 commits intomatrix-org:mainfrom
cvwright wants to merge 8 commits intomatrix-org:mainfrom
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February 10, 2022 12:08
Signed-off-by: Charles Wright <cvwright@futo.org>
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jvoisin
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Feb 18, 2022
| However those patents expired in 2011 and 2017, respectively, and | ||
| as a result, SPEKE-derived protocols like BS-SPEKE can now be used freely. | ||
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| BS-SPEKE comes highly recommended by experts in applied cryptography, |
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Can you please provide citations for this claim?
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I can't say anything about it being recommended, but as far as the patents are concerned,
EKE: https://en.wikipedia.org/wiki/Encrypted_key_exchange => https://patents.google.com/patent/US5241599 & https://patents.google.com/patent/US5440635
SPEKE: https://en.wikipedia.org/wiki/SPEKE#History => https://patents.google.com/patent/US6226383
They seem to have expired.
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@jvoisin The recommendation is mostly Thomas Ptacek yelling at me on Hacker News to use BS-SPEKE instead of SRP. Not exactly a peer-reviewed publication, but still his word means a lot in this space.
Signed-off-by: Charles Wright <cvwright@futo.org>
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This proposal serves as a sort of update to MSC3262. The main difference is a change from one password-authenticated key exchange (PAKE) protocol, SRP6a, to a more modern PAKE protocol, BS-SPEKE.
This also deprecates MSC3265, which proposed doing a bunch of client-side hashing to prevent the server from learning the user's "real" password.