Date: Wed, 03 Apr 2019 04:43:52 -0700
From: Erik Sy <notifications@github.com>
Reply-To: quicwg/base-drafts
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Message-ID: <quicwg/base-drafts/issues/2587@github.com>
Subject: [quicwg/base-drafts] Construction of address validation token (#2587)
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The draft describes that a client SHOULD NOT reuse a token in different connections (https://tools.ietf.org/html/draft-ietf-quic-transport-19#section-8.1.2). However, I miss the argument that the server SHOULD NOT construct the same token multiple times.
This argument addresses the risks of client tracking via tokens if a deterministic approach is used to construct them.

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<p>The draft describes that a client SHOULD NOT reuse a token in different connections (<a href="https://tools.ietf.org/html/draft-ietf-quic-transport-19#section-8.1.2" rel="nofollow">https://tools.ietf.org/html/draft-ietf-quic-transport-19#section-8.1.2</a>). However, I miss the argument that the server SHOULD NOT construct the same token multiple times.<br>
This argument addresses the risks of client tracking via tokens if a deterministic approach is used to construct them.</p>

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