Encrypt cell phones calls!!!!
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Please be positive and constructive with your questions and comments.

Re: Encrypt cell phones calls!!!!

by Entropy on Sat Jan 02, 2010 12:29 pm

perse0 wrote:Hello,

im new in the forum, who knows about encrypting phone calls?

thanks in advanced!!

Google Sectera.

I think there are civilian variants. You can't buy the Type I certified units unless you're a government contractor or the government themselves. I have no idea whether or not the civilian variants have any sort of backdooring.
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Re: Encrypt cell phones calls!!!!

by Ramjet1 on Tue Feb 08, 2011 1:20 am

There is no encryption technology available to the general population that will prevent government / law enforcement from being able to read the data stream. Depending on who wants to read it, it's trivial.
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Re: Encrypt cell phones calls!!!!

by gwenhastings on Mon Mar 21, 2011 5:10 pm

not quite so fast.. there is cryptophone also http://www.cryptophone.de/ and the unit I was just recommended to is this one...http://www.cryptophone.de/en/products/mobile/cp400/..

some other products will shake out I suspect...

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Re: Encrypt cell phones calls!!!!

by Syn7 on Fri Dec 28, 2012 6:52 am

It's voip. Not quite the same as encrypting a cell phone. I'm sure it works fine tho.
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Re: Encrypt cell phones calls!!!!

by adafruit_support_mike on Fri Jun 14, 2013 11:40 pm

Before everyone gets too excited about encryption, I'd suggest you look up civilian cryptography guru Bruce Schneier and read what he has to say on the subject.

Short version: there was a time in the early days of civilian cryptography when people believed encryption was a 'magic security dust' (his term) that people could sprinkle on problems and make the bad stuff go away. As civilian experts spent more time exploring detailed real-world problems, they found that security protocols are even more important. It doesn't matter how good your lock is if your bank vault has a big plate glass window.

Real security is a hard problem, and many years of expert research have shown there's no product you can buy that will make it stop being a hard problem.

WRT cell phone encryption, the first and most obvious problem is, "how do you plan to transfer the keys that allow the people at the other end to decrypt your call?" An unencrypted phone call is probably not the best option. On another track, if the keys live in hardware, anyone who gets physical access to any phone you can call has just broken your security.

WRT the recent disclosures about PRISM, encrypting the conversation is irrelevant. The NSA has been collecting metadata about the calls.. which numbers you called, how long each call lasted, when you made the calls, where you were when you made each call, etc. Your actual conversation could be in a pdigin of Navajo, Teochow, and Basque for all it matters. The stuff the NSA has collected is inherent in making the phone system operate.
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Please be positive and constructive with your questions and comments.