Subject: [AVT] Reg: 3DES Encryption

From: "Siddhartha Gandhi" <[email-masked]>
Date: Fri, 27 Jan 2006 10:59:53 -0600

Hi all,

RFC 3550 states that RTP and RTCP packets should be atleast 3DES encrypted.
It also mentions that the keys for encryption are derived from SSRC or
timestamps.

It however does not explian the mechanism through which the keys will be
exhanged between the end parties. Can I use any of the Public Key
Cryptography methods like Diffie-Hellman ?

Also should the key negotiation be done in-band/out-of-band using SIP or
some other protocol ?

Any inputs in this regard will be highly appreciated.

Thanks,

Siddhartha

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