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Re: PRZ encrypted voice software release imminent
On Fri, 11 Aug 1995, David Neal wrote:
> On Fri, 11 Aug 1995, Vladimir Z. Nuri wrote:
> > when someone invents cheap hardware that you can just plug
> > on top of any existing phone, i.e. "the phone adaptor", TPA?,
> > *that's* when the world is going to go crazy with crypto.
> It's closer than you think. I've been messing with TI's
> Digital Signal Processing DSK. For $99 you get a DSP
> with audio in, audio out and 10k of memory. Reference
> implementations of : DTMF encoders/decoders; 300, 1200, 2400 baud
> modem programs; and voice processing software already exist.
It would be interesting to create a hardware device which is
interoperable with PGPFone but uses a DSP chip and a slower control
processor. I can easilly imagine $100-$150 as a reasonable range.
I will be really curious to see what kind of voice coder they are using
in PGPFone...I assume it is some flavor of CELP.