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- 03-02-2008, 12:14 PM #16carcarxGuest
Re: News: Encrypted GSM Voice Calls & SMS Messages Hacked in Minutes
On Mar 1, 6:32 pm, DTC <[email protected]> wrote:
> carcarx wrote:
> > On Feb 29, 9:12 am, John Navas <[email protected]> wrote:
> >> CDMA has also been cracked. (I posted citations long ago.)
>
> > Strange. I asked you specifically for them, but there was never a
> > response.
> > Please retrieve them and post them again.
>
> Navas must have gotten his information from this...
No, that has no reference to North Korea.
I also focus in on this that you posted:
> But first...consider the source, Steve "Black Helicopter" Gibson
> LEO: Now, wait a minute. The long code scrambles transmissions through
> the standardized cellular authentication and voice-encryption algorithm,
> which is probably the one that's broken, to generate a 128-bit sub-key
> called Shared Secret Data, SSD. This key feeds into an AES algorithm to
> encrypt transmissions.
>
> STEVE: Well, that does sound pretty good.
>
> LEO: If it's using AES with a 128-bit key generated by random, by
> pseudo-noise...
>
> STEVE: Yeah, it doesn't sound like it's using any kind of a public key
> technology. And I don't know where the shared secret comes from. It
> might be based on the phone number, or maybe it's established ahead of
> time? Anyway, it is on my list of things to research deeply. So I can,
> you know, we'll spend an hour here before too long talking in detail
> about cellular encryption technology because I know lots of people are a
> little anxious about it.
>
> LEO: Well, the thing that makes me anxious is maybe EVDO is secure, the
> data's secure. But it sounds like voice transmissions over GSM and CDMA
> are not.
>
> STEVE: Right. They would be relying on that initial level of
> obfuscation, which you really cannot consider as being encryption.
Yet, when one delves into the encryption of 1xRTT one sees (section 2
of
http://www.cdg.org/technology/cdma_t...y_overview.pdf
)
the 128 bit AES key and the 42 bit long code. (reference Fig. 3 in in
section 2.2).
So, there it appears that the voice encryption has the strength of the
data encryption. so, according to the interview
posting, voice is secure, too.
So, we're still waiting for Navas' references and dates.
› See More: News: Encrypted GSM Voice Calls & SMS Messages Hacked in Minutes
- 03-03-2008, 12:57 PM #17carcarxGuest
Re: News: Encrypted GSM Voice Calls & SMS Messages Hacked in Minutes
On Mar 2, 12:14 pm, carcarx <[email protected]> wrote:
> On Mar 1, 6:32 pm, DTC <[email protected]> wrote:
>
> > carcarx wrote:
> > > On Feb 29, 9:12 am, John Navas <[email protected]> wrote:
> > >> CDMA has also been cracked. (I posted citations long ago.)
>
> > > Strange. I asked you specifically for them, but there was never a
> > > response.
> > > Please retrieve them and post them again.
>
> > Navas must have gotten his information from this...
That post, according to the web site was dated February 7, 2008, well
after
his May 1st posting, so couldn't have been part of Navas' original
information, either.
> So, we're still waiting for Navas' references and dates.
- 03-03-2008, 05:45 PM #18SMSGuest
Re: News: Encrypted GSM Voice Calls & SMS Messages Hacked in Minutes
carcarx wrote:
> On Mar 2, 12:14 pm, carcarx <[email protected]> wrote:
>> On Mar 1, 6:32 pm, DTC <[email protected]> wrote:
>>
>>> carcarx wrote:
>>>> On Feb 29, 9:12 am, John Navas <[email protected]> wrote:
>>>>> CDMA has also been cracked. (I posted citations long ago.)
>>>> Strange. I asked you specifically for them, but there was never a
>>>> response.
>>>> Please retrieve them and post them again.
>>> Navas must have gotten his information from this...
>
> That post, according to the web site was dated February 7, 2008, well
> after
> his May 1st posting, so couldn't have been part of Navas' original
> information, either.
>
>> So, we're still waiting for Navas' references and dates.
>
You can't crack CDMA real time. You can capture a piece of a
transmission and crack it over time, but you'll have only a tiny piece
of the total conversation.
Remember, CDMA was designed for military use because of its security in
field communications. CDMA was only declassified in the mid 1980's.
See
"http://www.nortel.com/solutions/wireless/collateral/nn_107760.09-15-04.pdf"
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