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 _______________________________________________ --Bandwidth and Colocation Provided by http://www.api-digital.com-- asterisk-biz mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-biz