Update key derivation

[martinthomson]

TLS moved to shorter labels to reduce the number of times we call SHA-256. We should do that.

Also, capitalization on "secret" is inconsistent in the example, credit to @mcmanus for finding that. It's surprising that it took so long for anyone to complain.

[mikkelfj]

I did complain about case esrlier ...

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________________________________ From: Martin Thomson <notifications@github.com> Sent: Friday, December 8, 2017 6:07:12 AM To: quicwg/base-drafts Cc: Subscribed Subject: [quicwg/base-drafts] Update key derivation (#1003) TLS moved to shorter labels to reduce the number of times we call SHA-256. We should do that. Also, capitalization on "secret" is inconsistent in the example, credit to @mcmanus<https://github.com/mcmanus> for finding that. It's surprising that it took so long for anyone to complain. — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub<#1003>, or mute the thread<https://github.com/notifications/unsubscribe-auth/AALzNx6EKCMAv2u6fzNb31OkRMMYGKvBks5s-MP_gaJpZM4Q6mMJ>.