Re: Real-time sound cyphering algorithm

From: Mike Amling (nospam_at_nospam.com)
Date: 06/01/05

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    Date: Tue, 31 May 2005 22:19:12 GMT

    David Eather wrote:
    > Just going over the stuff at the top of the post which seems to have
    > sparked all this. Was it understood that addition of noise to a
    > signal would/could/should be done like most other addition in crypto
    > (mod something appropriate)?

       If the OP's goal is to make some encrypted sound and recover a
    plaintext from a recording of that audio ciphertext, I think he'd be
    better off trying to digitize his message, encrypt it using normal
    cryptographic methods and modulate the ciphertext into the sound wave
    using robust analog techniques and error correcting codes, something
    similar to what must be used by radio modems (or what's that
    IP-over-ham-radio called?) that can bounce a signal off a
    none-too-stable ionosphere and still recover the digital data.

    --Mike Amling

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