A method, an apparatus, and a computer program product for remote authentication
are disclosed. The methods are based on exchanging of signals representing remote
party's biometrics information (such as acoustic waveforms) and have application
in secure telephony or video-conferencing communications over open networks. The
apparatus includes a speech encoding/decoding module (632), a control module
(636), an encryption/decryption module (640), a key generator (650),
a Diffie Hellman key exchange system (660), a timer module (670)
for measuring time between a challenged statement and a corresponding response
statement, an input/output (I/O) module (680) for transmitting and receiving
data via a communications channel 610.
