Re: Encrypting voice comunications..

2007-02-03 Thread Harald Welte
On Fri, Feb 02, 2007 at 07:13:12PM +0200, Mikko J Rauhala wrote: On pe, 2007-02-02 at 09:06 -0800, Tim Newsom wrote: If we have access to the mic and speakers while a call is in process, and we have the ability to record conversations etc... Where does the processor sit in that chain?

Re: Encrypting voice comunications..

2007-02-03 Thread Ian Stirling
Mikko Rauhala wrote: pe, 2007-02-02 kello 09:54 -0800, Tim Newsom kirjoitti: So, though possibly inefficient, we could not some how take the analog audio stream, do some predictable and reversible encoding/encrypting then convert into sounds again.. Like doing base64 encoding for binary

Re: Encrypting voice comunications..

2007-02-02 Thread Mikko J Rauhala
On pe, 2007-02-02 at 09:06 -0800, Tim Newsom wrote: If we have access to the mic and speakers while a call is in process, and we have the ability to record conversations etc... Where does the processor sit in that chain? Can we consume the voice, encrypt it and feed an encrypted

Re: Encrypting voice comunications..

2007-02-02 Thread Paul Wouters
On Fri, 2 Feb 2007, Mikko J Rauhala wrote: No. The GSM processor does its own audio de- and encoding, and its And echo cancellation. When using any VOIP app, you will need to put in your own echo cancelation code. I listened to the Windows Mobile 5 Skype client, and even that was pretty awfull.

Re: Encrypting voice comunications..

2007-02-02 Thread Tim Newsom
So, though possibly inefficient, we could not some how take the analog audio stream, do some predictable and reversible encoding/encrypting then convert into sounds again.. Like doing base64 encoding for binary data.. In that way we are still sending audio information and letting it get