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Re: [TLS] Request for review: Next Protocol Negotiation Extension

Adam Langley <agl@google.com> Wed, 18 August 2010 19:48 UTC

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Date: Wed, 18 Aug 2010 15:48:42 -0400
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From: Adam Langley <agl@google.com>
To: Michael D'Errico <mike-list@pobox.com>
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Cc: tls@ietf.org
Subject: Re: [TLS] Request for review: Next Protocol Negotiation Extension
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On Wed, Aug 18, 2010 at 3:40 PM, Michael D'Errico <mike-list@pobox.com> wrote:
> My TLS implementation performs a full handshake (RSA 1024-bit key) on
> localhost (i.e. not going over the network) in less than 5 milliseconds.
> A session resumption takes around 500 MICROseconds.  (ECC cipher suites
> should further reduce the full handshake timing.)  TLS just doesn't
> have that much overhead!

The computational overhead of TLS is unimportant for many applications
and is only becoming less important over time.

However, the number of round trips is critical. However fast the hosts
might be, the speed of light always stays the same.


AGL

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