Re: [Cfrg] draft-goldbe-vrf: Verifiable Random Functions
"Blumenthal, Uri - 0553 - MITLL" <uri@ll.mit.edu> Sun, 23 July 2017 02:26 UTC
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From: "Blumenthal, Uri - 0553 - MITLL" <uri@ll.mit.edu>
To: Tony Arcieri <bascule@gmail.com>, "cfrg@irtf.org" <cfrg@irtf.org>
Thread-Topic: [Cfrg] draft-goldbe-vrf: Verifiable Random Functions
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Date: Sun, 23 Jul 2017 02:25:54 +0000
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Subject: Re: [Cfrg] draft-goldbe-vrf: Verifiable Random Functions
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And I would *really* love it if we could have something like Elligator for more curves, such as the NIST-defined... Regards, Uri Sent from my iPhone > On Jul 22, 2017, at 12:09, Tony Arcieri <bascule@gmail.com> wrote: > >> On Fri, Jul 21, 2017 at 9:32 AM, Dan Brown <danibrown@blackberry.com> wrote: >> Answering myself below: VRFs have been around since 1999, so are not so new. Still don't like the name, and still have trouble seeing the value. > > VRFs provide deterministic precommitments you can reveal at a later time. This is useful if you want to maintain a 1:1 mapping of low entropy inputs (e.g. names, email addresses, phone numbers) to some random values you can commit to in advance, e.g. through a timestamping service/transparency log. > > Using a VRF means you can make these random outputs effectively public without them being subject to a preimage attack (so long as the VRF private key is not leaked). This way a key transparency server can prove a given user's keys were included in a transparency log without enabling spammers to obtain all of the names in the directory. > > -- > Tony Arcieri > _______________________________________________ > Cfrg mailing list > Cfrg@irtf.org > https://www.irtf.org/mailman/listinfo/cfrg
- [Cfrg] draft-goldbe-vrf: Verifiable Random Functi… Sharon Goldberg
- Re: [Cfrg] draft-goldbe-vrf: Verifiable Random Fu… Dan Brown
- Re: [Cfrg] draft-goldbe-vrf: Verifiable Random Fu… Tony Arcieri
- Re: [Cfrg] draft-goldbe-vrf: Verifiable Random Fu… Paterson, Kenny
- Re: [Cfrg] draft-goldbe-vrf: Verifiable Random Fu… Dan Brown
- Re: [Cfrg] draft-goldbe-vrf: Verifiable Random Fu… Watson Ladd
- Re: [Cfrg] draft-goldbe-vrf: Verifiable Random Fu… Tony Arcieri
- Re: [Cfrg] draft-goldbe-vrf: Verifiable Random Fu… Blumenthal, Uri - 0553 - MITLL
- Re: [Cfrg] draft-goldbe-vrf: Verifiable Random Fu… Sharon Goldberg
- Re: [Cfrg] draft-goldbe-vrf: Verifiable Random Fu… Thomas Garcia
- Re: [Cfrg] draft-goldbe-vrf: Verifiable Random Fu… Sharon Goldberg
- Re: [Cfrg] draft-goldbe-vrf: Verifiable Random Fu… Thomas Garcia
- Re: [Cfrg] draft-goldbe-vrf: Verifiable Random Fu… Philip L
- Re: [Cfrg] draft-goldbe-vrf: Verifiable Random Fu… Sharon Goldberg