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EURASIP Journal on Applied Signal Processing 2003:10, 10271042 c 2003 Hindawi Publishing Corporation
 

Summary: EURASIP Journal on Applied Signal Processing 2003:10, 1027­1042
c 2003 Hindawi Publishing Corporation
On Securing Real-Time Speech Transmission
over the Internet: An Experimental Study
Alessandro Aldini
Instituto di Scienze e Tecnologie dell'Informazione (STI), Universit`a degli Studi di Urbino, 61029 Urbino, Italy
Email: aldini@sti.uniurb.it
Marco Roccetti
Dipartimento di Scienze dell'Informazione, Universit`a di Bologna, 40127 Bologna, Italy
Email: roccetti@cs.unibo.it
Roberto Gorrieri
Dipartimento di Scienze dell'Informazione, Universit`a di Bologna, 40127 Bologna, Italy
Email: gorrieri@cs.unibo.it
Received 27 May 2002 and in revised form 3 January 2003
We analyze and compare several soft real-time applications designed for the secure transmission of packetized audio over the
Internet. The main metrics we consider for the purposes of our analysis are (i) the computational load due to the coding/decoding
phases, and (ii) the computational overhead of the encryption/decryption activities, carried out by the audio tools of interest.
The main result we present is that an appropriate degree of security may be guaranteed to real-time audio communications at
a negligible computational cost if the adopted security strategies are integrated together with the playout control mechanism
incorporated in the audio tools.

  

Source: Aldini, Alessandro - Dipartimento di Matematica, Fisica e Informatica, Universita’ di Urbino "Carlo Bo"

 

Collections: Computer Technologies and Information Sciences