Re: [Cfrg] Safecurves draft

Paul Lambert <paul@marvell.com> Thu, 09 January 2014 20:01 UTC

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From: Paul Lambert <paul@marvell.com>
To: Watson Ladd <watsonbladd@gmail.com>, Mike Hamburg <mike@shiftleft.org>
Date: Thu, 9 Jan 2014 12:01:15 -0800
Thread-Topic: [Cfrg] Safecurves draft
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References: <20140109031144.6111382.52184.8264@certicom.com> <20140109094731.GA12327@netbook.cypherspace.org> <CADMpkc+giuSZgrYmusRJmj5SyN9Dcu_Mdaqx5KQPyXGMmosFUw@mail.gmail.com> <CABqy+soXxjY+fEzpHP+_yn9Y1Xtapm_9OWbgDcA_J_Lukz_YLw@mail.gmail.com> <CADMpkcJFk2C5DPQX9RVWphUH25atsUX2vPA7RwNf8zbmR6dXJQ@mail.gmail.com> <CABqy+soX0xVWG0+vJs-_7O1Ur_hkDW0u0acCGZYrrtEci5QRXw@mail.gmail.com> <CADMpkcKptQrtXyaarkXiMpRyGmobEcywbTeTkkcb6uWB-yttwg@mail.gmail.com> <B29AD107-69D0-4EF5-9D5B-137C1E333AEA@shiftleft.org> <CACsn0ckufy9jfOXcMDA7WE+SzZUuuibucod8CkQeACnQam63-w@mail.gmail.com>
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Cc: "cfrg@irtf.org" <cfrg@irtf.org>
Subject: Re: [Cfrg] Safecurves draft
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>> I agree.  The sender might well use Edwards internally -- it's about 3x
>> faster -- but the point should be sent in Montgomery form.
Totally undefined in the draft.  Critical for interoperability.


>
>This draft doesn't specify an encoding: it's up to whichever standard
>uses this draft
>to pick one.
Wrong answer Š  we need interoperability of public key representation
Since a key may be used in multiple applications.


Paul