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Re: [TLS] About encrypting SNI

Marsh Ray <maray@microsoft.com> Mon, 12 May 2014 18:31 UTC

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From: Marsh Ray <maray@microsoft.com>
To: Brian Sniffen <bsniffen@akamai.com>, David Holmes <d.holmes@f5.com>, Eric Rescorla <ekr@rtfm.com>
Thread-Topic: [TLS] About encrypting SNI
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Date: Mon, 12 May 2014 18:31:03 +0000
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Cc: "tls@ietf.org" <tls@ietf.org>, Andy Lutomirski <luto@amacapital.net>
Subject: Re: [TLS] About encrypting SNI
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From: TLS [mailto:tls-bounces@ietf.org] On Behalf Of Brian Sniffen
>
> Bitcoin's also hard to check: if the client says it found no bitcoin in a
> particular region, how do you know?  And a whole bitcoin's too
> much to ask.
> 
> An identity scheme tied to giving away bitcoin---much like a credit
> rating ties to many transactions profitable for the counterparty---
> has a lot in its favor.  It would make a great (research) extension
> on top of TLS 1.3, and I hope that any puzzle mechanism will be
> flexible enough to support that.

Years back, Microsoft was looking into a proof-of-work scheme for antispam sender-pays email.
http://research.microsoft.com/en-us/projects/pennyblack/

One challenge is that botnets (that are conduits for most of the spam) also have plenty of spare CPU capacity.

- Marsh
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