[Cryptography] The crypto behind the blackphone

[Daniel Cegiełka]

2014-01-27 Jon Callas <jon at callas.org>:
>
> On Jan 26, 2014, at 10:41 PM, Daniel Cegiełka <daniel.cegielka at gmail.com> wrote:

>> I don't know how they
>> will solve the baseband problem (closed-source proprietary chip/RTOS
>> running alongside e.g. Android).
>>
>> http://www.technologyreview.com/news/428632/gps-weakness-could-enable-mass-smartphone-hacking/
>> http://reverse.put.as/wp-content/uploads/2011/06/basebandplayground-luismiras.pdf
>
> There's no way we can solve this problem for the first device. Baseband security is a huge problem.
>
>>
>> Crypto is the smallest problem in this project.
>
> Absolutely! Frankly, one of the things I consider most important is building the phone so that the OS can be updated for a reasonable life of the hardware.
>
>         Jon

What gives you the use of cryptography, if your phone is factory
built-in backdoor (baseband)? Until not solve this problem, you can
not say that Blackphone is really safe.

Daniel