[h323plus] 回复： 回复： Does H323plus support H.235

[Simon Horne]

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 at lists.packetizer.com
> [mailto:h323plus-bounces at 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 at 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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