Encrypted Cordless phones
Eli Brandt
ebrandt at jarthur.Claremont.EDU
Tue Apr 13 20:31:51 PDT 1993
> Both phones have all the usual advanced features like auto-redial
> and such. Neither company's literature tells what encryption
> technology they uses.
It doesn't much matter; they're using ten- and sixteen-bit keys.
Assuming it takes some 50 ms to tell voice from the white noise that
a failed attempt will generate, a brute-force attack on these
systems should take under a minute and an hour respectively,
worst-case. This is hardly rock-solid security; it looks like it
rests mostly on nobody reverse-engineering their algorithm.
> S a n d y
Eli ebrandt at jarthur.claremont.edu
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