The shared secret is used to encrypt the key exchange material to generate the cipher for media encryption.
If the shared secret was public knowledge then anyone can intercept the key exchange and generate a key to decrypt the media. So unless Polycom or Codian wish to share that proprietry secret there is no way to connect via AES.
Simon
-----Original Message----- From: h323plus-bounces@lists.packetizer.com [mailto:h323plus-bounces@lists.packetizer.com]On Behalf Of Bian Sent: Saturday, December 01, 2007 11:19 AM To: H323plus Subject: [h323plus] 回复： 回复： Does H323plus support H.235
Simon
I think PVX's key exchange mechanism is in a standard way. PVX and Codian MCU can connect using AES.
But I don't know how the shared secret is used to produce the session key.
Bian
-----Original Message----- Bian
No PacPhone AES uses a different key exchange mechanism to PVX.
Polycom uses
a proprietry method. They should still connect unencrypted.
Simon
-----Original Message----- From: Bian [mailto:bianxg@yahoo.cn] Sent: Wednesday, November 28, 2007 12:35 PM To: Simon Horne Subject: 回复： [h323plus] Does H323plus support H.235
Simon
I test PccPhone with PVX, but the AES is not opened. Does PacPhone can interoperate with PVX using AES?
Bian
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