Re: [quicwg/base-drafts] Encrypting token in Retry packet (#3477)

Quoc-Viet Nguyen <notifications@github.com> Sun, 23 February 2020 08:00 UTC

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Subject: Re: [quicwg/base-drafts] Encrypting token in Retry packet (#3477)
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If HKDF-Expand-Label is expensive, can we use ODCID such as first 128 bit as the secret key and the remain as the nonce? Or can we generalize it and say SHA256 of user data (ODCID in this case) will be AEAD key and nonce?

WRT pseudo packet. I think on client side, I still need to allocate memory for a copy of received retry packet plus odcid to verify the integrity tag.

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