Re: [TLS] TLS1.3 HkdfLabel - value of label<0..6> ?

M K Saravanan <mksarav@gmail.com> Sun, 31 March 2019 23:41 UTC

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From: M K Saravanan <mksarav@gmail.com>
Date: Mon, 01 Apr 2019 07:40:48 +0800
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To: Ilari Liusvaara <ilariliusvaara@welho.com>
Cc: tls@ietf.org
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Subject: Re: [TLS] TLS1.3 HkdfLabel - value of label<0..6> ?
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On Sun, 31 Mar 2019 at 21:46, Ilari Liusvaara <ilariliusvaara@welho.com> wrote:
> The syntax "opaque label<7..255>" means that label is octet string of
> at least 7 and at most 255 octets, and that its length is encoded using
> 1 octet. The string "tls13 " is 6 octets long, so that impiles that
> Label is at least 1 octet and at most 249 octets long.
[...]

Thank you so much for the detailed clarification with examples.

with regards,
Saravanan