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RE: [AVT] RFC3711, MKI length question

Hi,

I also assume that MKI length and n_tag are initialized at session configuration and won't change. I don't see any cases where it would be necessary to modify these values during a session.

Sylvain

-----Original Message-----
From: avt-admin@ietf.org [mailto:avt-admin@ietf.org]On Behalf Of Ofer Goren
Sent: 13 mai, 2004 10:22
To: avt@ietf.org; srtp-users@lists.sourceforge.net
Subject: [AVT] RFC3711, MKI length question


Hi all.

According to the RFC, Section 3.3, bullet 3, one should use the MKI (if exist in the packet) to retrieve the master key in the crypto context.
My question is this, and it is implementation related: if I need to use the MKI, I need to know its length before. Can I assume the user (user application) sets and stores the value on a per-session base? This means that all MKIs associated with that session has the same length.
The same goes to n_tag parameter.

Thanks, 

Ofer Goren

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