Re: [AVT] Keying SRTP store and forward

["Rolf Blom J" <rolf.j.blom at ericsson.com>]

The analogy is that the e2e protection in SRTP corresponds to the
content encryption in secure email and the hbh protection gives
transport protection. So SRTP combines both. That the basic idea.

Rolf 

-----Original Message-----
From: David R Oran [mailto:oran at cisco.com] 
Sent: den 19 november 2008 20:13
To: Rolf Blom J
Cc: AVT
Subject: Re: [AVT] Keying SRTP store and forward

But secure email is done with PGP or S/Mime, which does content crypto,
not transport crypto. So I'm afraid I don't see the analogy.

On Nov 19, 2008, at 1:02 PM, Rolf Blom J wrote:

> At my presentation yesterday, keying for e2e protection in connection 
> with voice mailboxes was discussed. I believe this discussion got a 
> bit confused as we were coming from differing starting points and we 
> had different views on what should and/or can be achieved.
>
> I look at e2e protected mailboxes in a similar way as I consider 
> secure email. In secure email the sender exactly specifies the 
> specific person or group of persons he wants to send the email to, and

> a receiver can only read his email if his secure email credentials are

> available in the terminal he uses. I believe this is a feature of 
> secure email. If you want to have access to your email from any 
> terminal (not providing credentials for secure email) you have to rely

> on protected transport of the plaintext email from the email server to

> the client.
>
> Secure email is a valuable service used many private users and is also

> a standard in many large organizations like enterprises, government 
> authorities etc. I believe that these user groups, appreciating secure

> email, should also be offered the possibility to have e2e protected 
> voice (and multimedia) mailboxes. For this, the proposed extensions in

> SRTP are needed.
>
> Note that this work is not only (or perhaps even mainly) motivated by 
> the voice mailbox use case but also relates to the media distribution 
> use cases described in the draft.
>
> Rolf Blom
> Ericsson Research
>
>
>
> _______________________________________________
> Audio/Video Transport Working Group
> avt at ietf.org
> https://www.ietf.org/mailman/listinfo/avt

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