[asterisk-biz] encrypted pstn calls

[Trixter aka Bret McDanel]

I have written some windows mobile software (used on my HTC phone) which
will encrypt phone calls (the underlying mobile network should not
matter, but its known to work with GSM).

I do not know if anyone is interested in this, or more specifically in
supporting additional platforms.  For example, an iphone port, an
android port, a server side module, or something else

The software lets you make gsm<->gsm calls and send text messages
encrypted.  In addition if I write server side software, you can do this
to gsm<->[asterisk|freeswitch|maybe something else].  This way a call
to/from a mobile would be encrypted, and could be encrypted via SRTP/TLS
to the handset itself.

The use of crypto is optional on a per call basis, which means that you
can still send/receive calls from unencrypted phones.

This might be ideal for those who need HIPPA compliance for medical
information, or for people in the financial community, or just for
people who want to keep what is said private from prying ears (its not
that difficult to monitor GSM calls, there is even an active multi-year
old project using gnu radio and other tools to do just that, A5 the GSM
cipher has many weaknesses, and there are even rainbow tables making it
as simple as a lookup for the key).

If anyone is interested in sponsoring this software email me privately
and we can discuss this further.  I am open to licensing this for resale
as well.


-- 
Trixter http://www.0xdecafbad.com     Bret McDanel
pgp key: http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x8AE5C721