Re: [MMUSIC] late dtls-id request

Martin Thomson <martin.thomson@gmail.com> Thu, 09 March 2017 07:15 UTC

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From: Martin Thomson <martin.thomson@gmail.com>
Date: Thu, 9 Mar 2017 18:15:07 +1100
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To: Christer Holmberg <christer.holmberg@ericsson.com>
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Subject: Re: [MMUSIC] late dtls-id request
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On 9 March 2017 at 17:57, Christer Holmberg
<christer.holmberg@ericsson.com> wrote:
> But, I assume we can make that assumption also with 255.

For that, 20 would be plenty.

Note that you only require 32 bits of randomness (which fits in the
minimum of 6 characters), which is not quite enough to provide
global-scale uniqueness.  20 pretty much is going to do that (assuming
6 bits per character, which base64 would allow).

FWIW, I would be happier if you moved the 32 bit requirement to 120
and raised the minimum to 20, but that's a much bigger change.