Re: [A51] Table distribution

2010-07-24 Thread Dinos Pastos
If it was to be uploaded, I suggest Usenet servers where the retention
is massive and anonymous

On Sun, Jul 25, 2010 at 6:59 AM, Lubomir Schmidt
 wrote:
> And in germany i could get 2tb discs for about 122USD(94,50€) and an
> external case for about 10USD
>
> Should we not just make torrents? I could upload at the moment with
> ~100mbit. That would be the much cheaper and easy way.
>
> 2010/7/24 GeleGrodan :
>> Those 2TB disks you speak of, are they internal or external?
>>
>> If you speak about external, I guess the price isnt better over here in
>> Sweden:
>>
>> External 2TB - ca 182USD
>> Internal 2TB - ca 142USD
>> External case - 41USD (USB 2.0/eSATA)
>>
>> +Shipping
>>
>> Dont know what the shipping costs, what do you pay Peter?
>>
>>
>>
>> On Sat, Jul 24, 2010 at 20:54, Peter Stuge  wrote:
>>>
>>> Frank A. Stevenson wrote:
>>> > I have gotten several requests for having disks shipped, payed for
>>> > with PayPal. I am not sure I really trust this company to not
>>> > freeze the accounts if someone complains
>>>
>>> I think that's wise.
>>>
>>>
>>> > "ext3 preformatted 2TB disks." I should be able to deliver these at
>>> > cost for ~250 USD, this includes Norwegian sales tax (25%) which I
>>> > haven't found a way to defray. But perhaps someone on the list could
>>> > do better than this and set up shop in a country where overall costs
>>> > are lower?
>>>
>>> Since Norway is outside the EU you'll mostly be exporting, and
>>> shouldn't charge sales tax. Buyers will likely have to pay import
>>> duties.
>>>
>>>
>>> > And ideally, quality packaging materials are readily available :-)
>>> > (We have already suffer 1 unfortunate disk crash)
>>>
>>> Suggest ship out by courier (I like UPS) and for packaging materials
>>> see if the store can ship to you (or whoever does this) with some
>>> extra packaging.
>>>
>>>
>>> //Peter
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>>
>>
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Re: [A51] Table distribution

2010-07-24 Thread Lubomir Schmidt
And in germany i could get 2tb discs for about 122USD(94,50€) and an
external case for about 10USD

Should we not just make torrents? I could upload at the moment with
~100mbit. That would be the much cheaper and easy way.

2010/7/24 GeleGrodan :
> Those 2TB disks you speak of, are they internal or external?
>
> If you speak about external, I guess the price isnt better over here in
> Sweden:
>
> External 2TB - ca 182USD
> Internal 2TB - ca 142USD
> External case - 41USD (USB 2.0/eSATA)
>
> +Shipping
>
> Dont know what the shipping costs, what do you pay Peter?
>
>
>
> On Sat, Jul 24, 2010 at 20:54, Peter Stuge  wrote:
>>
>> Frank A. Stevenson wrote:
>> > I have gotten several requests for having disks shipped, payed for
>> > with PayPal. I am not sure I really trust this company to not
>> > freeze the accounts if someone complains
>>
>> I think that's wise.
>>
>>
>> > "ext3 preformatted 2TB disks." I should be able to deliver these at
>> > cost for ~250 USD, this includes Norwegian sales tax (25%) which I
>> > haven't found a way to defray. But perhaps someone on the list could
>> > do better than this and set up shop in a country where overall costs
>> > are lower?
>>
>> Since Norway is outside the EU you'll mostly be exporting, and
>> shouldn't charge sales tax. Buyers will likely have to pay import
>> duties.
>>
>>
>> > And ideally, quality packaging materials are readily available :-)
>> > (We have already suffer 1 unfortunate disk crash)
>>
>> Suggest ship out by courier (I like UPS) and for packaging materials
>> see if the store can ship to you (or whoever does this) with some
>> extra packaging.
>>
>>
>> //Peter
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>
>
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[A51] Tableformat and Kraken

2010-07-24 Thread Axel Walsleben

I have a set of the Berlin Tables in the Distributed Format.
Every Table folder contains: (sorted.end.tbl, sorted.index, 
sorted.start.tbl, sorted.table).
I played around with the TableConvert Utility, but my Tables are not 
accepted.


How do I convert them ?

thxs

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Re: [A51] Table distribution

2010-07-24 Thread GeleGrodan
Those 2TB disks you speak of, are they internal or external?

If you speak about external, I guess the price isnt better over here in
Sweden:

External 2TB - ca 182USD
Internal 2TB - ca 142USD
External case - 41USD (USB 2.0/eSATA)

+Shipping

Dont know what the shipping costs, what do you pay Peter?



On Sat, Jul 24, 2010 at 20:54, Peter Stuge  wrote:

> Frank A. Stevenson wrote:
> > I have gotten several requests for having disks shipped, payed for
> > with PayPal. I am not sure I really trust this company to not
> > freeze the accounts if someone complains
>
> I think that's wise.
>
>
> > "ext3 preformatted 2TB disks." I should be able to deliver these at
> > cost for ~250 USD, this includes Norwegian sales tax (25%) which I
> > haven't found a way to defray. But perhaps someone on the list could
> > do better than this and set up shop in a country where overall costs
> > are lower?
>
> Since Norway is outside the EU you'll mostly be exporting, and
> shouldn't charge sales tax. Buyers will likely have to pay import
> duties.
>
>
> > And ideally, quality packaging materials are readily available :-)
> > (We have already suffer 1 unfortunate disk crash)
>
> Suggest ship out by courier (I like UPS) and for packaging materials
> see if the store can ship to you (or whoever does this) with some
> extra packaging.
>
>
> //Peter
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Re: [A51] Reporting in..

2010-07-24 Thread Cal Leeming [Simplicity Media Ltd]
Yeah, technically someone with a USRP could seed a 20 minute airwave dump,
and you could replay it into whatever software you were using, but again, it
wouldn't be as fun.. Not sure about the legal implication either :S This is
what the guys at THC did tho back in 2008 I believe...


On Sat, Jul 24, 2010 at 8:34 PM, Peter Stuge  wrote:

> Clemens Gruber wrote:
> > How do you want people to contribute code to the airprobe project
> > if they have not enough money to buy a USRP?
>
> It is quite possible even without hardware to test on. It's just not
> as rewarding.
>
>
> //Peter
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Re: [A51] Reporting in..

2010-07-24 Thread Peter Stuge
Clemens Gruber wrote:
> How do you want people to contribute code to the airprobe project
> if they have not enough money to buy a USRP?

It is quite possible even without hardware to test on. It's just not
as rewarding.


//Peter
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Re: [A51] Reporting in..

2010-07-24 Thread Clemens Gruber
On Sat, 2010-07-24 at 20:29 +0200, Peter Stuge wrote:
> Affordable hardware options mean more people are likely to get
> involved with open source GSM development in general. True for
> every other hardware-related open source project I've seen..
> 
> 
> > Please focus your scarce resources where it is really needed...
> 
> Yeah. The focus isn't on PCBs. As you say, this is a software
> intensive area, the required hardware is "simple".
> 
> Hardware in hand of course does not bring any software, but already
> thinking about that hardware helps identify what software to focus
> on, and next step, hardware availability helps people get involved. 

Exactly, the point is.. there are many students (like me) and other
possible contributors out there who are not able to spend 1000 US
Dollars for buying a USRP1+Daughterboards+Antenna + UPS to Europe
(delivery itself is about 100USD + taxes?)

So the benefit of new hardware would definitely be that much more people
would buy this diy-pcb + components, solder it themselves and are then
able to contribute software to the project without having spent 1000$.

How do you want people to contribute code to the airprobe project if
they have not enough money to buy a USRP?

A downlink "module" would be sufficient for the beginning, a "uplink
module" could follow if needed. But at first a less expensive rx-module,
designed especially for receiving gsm signals, could help the project to
rapidly get more contributors.

Btw. I wouldn't say that the hardware is "that" simple, as Harald Welte
stated, professional measurement equipment is necessary, all guys at
university may be able to use stuff from the faculty, but it may still
be very hard to coordinate such a project just over the net/mailinglist.

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Re: [A51] Table distribution

2010-07-24 Thread Peter Stuge
Frank A. Stevenson wrote:
> I have gotten several requests for having disks shipped, payed for
> with PayPal. I am not sure I really trust this company to not
> freeze the accounts if someone complains

I think that's wise.


> "ext3 preformatted 2TB disks." I should be able to deliver these at
> cost for ~250 USD, this includes Norwegian sales tax (25%) which I
> haven't found a way to defray. But perhaps someone on the list could
> do better than this and set up shop in a country where overall costs
> are lower?

Since Norway is outside the EU you'll mostly be exporting, and
shouldn't charge sales tax. Buyers will likely have to pay import
duties.


> And ideally, quality packaging materials are readily available :-)
> (We have already suffer 1 unfortunate disk crash)

Suggest ship out by courier (I like UPS) and for packaging materials
see if the store can ship to you (or whoever does this) with some
extra packaging.


//Peter
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Re: [A51] Reporting in..

2010-07-24 Thread sascha
> As mentionned OpenBTS laurent's decomposition demod seems to be way
> better than the current one (from the limited testing I did). Another
> benefit is that you can exploit CUDA _a_lot_ for the first stage of a
> multi ARFCN receiver. (when you do the math you'll see that things fit
> together nicely and you end up with a bunch of complex MACs and at the
> output you have N channels of I/Q samples pre-multiplied for
> laurent's).

i am currently implementing a freq_xlating_fir_filter_ccf and a
fractional_interpolator_cc in cuda. next would be the viterbi decoder.
is this not the optimal algorithm to implement?

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Re: [A51] Reporting in..

2010-07-24 Thread Peter Stuge
Harald Welte wrote:
> what is wrong with you (sorry)?

No need to apologize, I think you make a very good point.


> The problem with regard to practical GSM A5 cracking is not that
> hardware is too expensive or that you need to do your own custom
> hardware.
> 
> The problem is that everybody wants a solution / software / ... but
> very few people actually are willing to put in the required time,
> sit down, get their hands dirty and make it work.

I think that there's a lot of excitement because Enemy-of-the-State-like
call interception seems to be at the fingertips of the masses, but for
most people that would like to try it out, the hardware setup is
prohibitively expensive - leading to more or less accurate
brainstorming for cheaper solutions.

The tradeoff between spending development time on hardware and
spending money on USRP is easy with goals such as demonstrating A5/1
brokenness or creating open source GSM software, however not so easy
for individuals with anything less than a very strong interest.

OsmocomBB is a fantastic development, making consumer electronics
usable for open source GSM development and experiments.

But it seems to me that it might be(come) difficult to source the
relevant hardware which is also problematic, just in another way,
for everyone but core contributors.


> The state of airprobe's various receivers (tvoid, gsmsp, gsm-receiver) has
> only improved marginally throughout the last years.  Even today, they are
> nothing more than a proof of concept.  They're far from what somebody would
> want to do actual real-world intercept.  They don't even support the various
> GSM channel types, they don't contain the neccessarry frequency / gain control
> loops for long-time reception, ...
> 
> This has all been clear for years.  Work in this area is completely unrelated
> to the actual A5/1 cracking and the rainbow tables.  There was no dependency
> on the rainbow tables needing to be completed before work on the airprobe
> receiver code could have been done.

That's certainly true. However, without the clear utility for a work,
many find it difficult to motivate themselves to produce it.

Baby steps basically. But since something very exciting is just
around a corner, many are quite eager and want to rush..


> During the same timeframe, a really great Free Software GSM receiver
> implementation has been released publicly:  That of OpenBTS.

Yes! I agree completely. And if there should be any open GSM hardware
then I think it must optimize for, and work closely together with
OpenBTS. I've spent the last few days reading up and am awed by their
progress.


> Yet, nobody has lifted a finger and transformed that implementation
> (and its contained laurent approximation based demodulation code)
> into a new airprobe receiver.

I think many if not most have overlooked the significance of
airprobe. I certainly have.


> But whether you use a USRP2, a USD 20,000 military SDR or a small
> custom cheap board will not change the fact that somebody still
> needs to write good demodulaton/decoding software.

And/or hardware. I think OpenBTS and OsmocomBB are two amazing
sources of code, and there is clearly overlap among them and airprobe
- or at least there should be! I'm pretty sure that it'd make sense
to move some things which are already finished or at least in good
condition in both projects into hardware.


> And any work spent on new hardware development is not going to
> bring any progress to the project.

Affordable hardware options mean more people are likely to get
involved with open source GSM development in general. True for
every other hardware-related open source project I've seen..


> Please focus your scarce resources where it is really needed...

Yeah. The focus isn't on PCBs. As you say, this is a software
intensive area, the required hardware is "simple".

Hardware in hand of course does not bring any software, but already
thinking about that hardware helps identify what software to focus
on, and next step, hardware availability helps people get involved.


//Peter
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Re: [A51] Reporting in..

2010-07-24 Thread Sylvain Munaut
> But whether you use a USRP2, a USD 20,000 military SDR or a small custom
> cheap board will not change the fact that somebody still needs to write good
> demodulaton/decoding software.  And any work spent on new hardware development
> is not going to bring any progress to the project.

That's the point I was trying to raise when I suggested that efforts
would be better spend exploiting to the full extend the HW we have
rather than building new one.

A single USRP with 2 db should be able to capture at least 3 MHz of
uplink and downlink synchronized. If the ARFCN of your hopping
sequence fit into those 3 MHz, then you're good.

As mentionned OpenBTS laurent's decomposition demod seems to be way
better than the current one (from the limited testing I did). Another
benefit is that you can exploit CUDA _a_lot_ for the first stage of a
multi ARFCN receiver. (when you do the math you'll see that things fit
together nicely and you end up with a bunch of complex MACs and at the
output you have N channels of I/Q samples pre-multiplied for
laurent's).

But yeah ... need time to implement all that :(


> Next problem is: If you ever want to tune into the uplink, you need custom
> hardware as the filters for the frequencies are reversed.  Plus, it is 
> impossible
> to find any SAW filters for the reverse bands in the same or similar 
> mechanical
> dimensions - not even speaking of the same impedance and 
> balanced/unbalanced-ness
> as needed.  Thus, it is impossible to simply replace the filters on existing
> hardware.

Well, on that point I don't agree ...

1) You can just ignore the filter: Works fine as long as the handset
is close enough, or if you're using a good antenna. Those filter are
just not that good.

2) You can do it 'brutally' and put a pre-amp in front of the antenna.
Definitely not the cleanest solution but it'll work. And if you want
to bring the uplink and the downlink 'in the same ballpark', just add
a filter to attenuate downlink as well.

3) There are simple SMD 'baluns' that will convert the unbalanced
50ohm to balanced 50ohm with a pinout close enough that soldering them
in place of the other could works. They (that one I haven't tried yet,
but I'll order a couple and see what I can work out when I have some
spare time)

The hardware is definitely limited but for demonstration purposes it
can do the trick IMHO. Workaround 1 is good for that use-case.
Workaround 2 is an option if you already have the parts laying around
from other GSM experiments. The option 3 ... well not tested yet so
can't really say anything.


OTOH, as you said creating a brand new board based on those chips
would be a loss of time.


Cheers,

Sylvain
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Re: [A51] Reporting in..

2010-07-24 Thread Harald Welte
On Sat, Jul 24, 2010 at 01:26:31AM +0100, Cal Leeming [Simplicity Media Ltd] 
wrote:

> Besides, you gotta remember, that the USRP is a very expensive piece of kit,
> and just having one might not be enough depending on what you need it for.
> See Sylvain's earlier post reply for a good explaination about this.
> 
> Personally, I think it would be a really cool idea to start up work shops
> which would look primarily at extracting the transceivers out of
> cheap/unwanted handsets, and putting them to a good use. It would certainly
> be a lot more fun than just paying for the hardware :)

Well, you can try to look at the work that we've been doing as part of
OsmocomBB (http://bb.osmocom.org/).  We've done all the code you need to
drive the transceiver of the TI Calypso chipset (TRF6151 / Rita), the 
analog baseband (TWL3025 / Iota) and the digital baseband (Calypso /
HERCROM400G2).

Next problem is: If you ever want to tune into the uplink, you need custom
hardware as the filters for the frequencies are reversed.  Plus, it is 
impossible
to find any SAW filters for the reverse bands in the same or similar mechanical
dimensions - not even speaking of the same impedance and 
balanced/unbalanced-ness
as needed.  Thus, it is impossible to simply replace the filters on existing
hardware.

More modern GSM phone designs use a 'frontend module', i.e. an integrated
component that contains the RF transceiver, the filters and often also the PA.
In such a module, you simply cannot change the filter characteristics
anymore.

Also, I would not waste time at developing your own hardware based on an
old / end-of-life RF transceiver.  Don't underestimate the time you will
have to spend on doing analog RF design at frequencies that come close to 2GHz.
Without the proper skills/experience and particularly measurement equipment,
you will not be able to design something that will be close to the performance
of a commercial handset.

I've analyzed this long enough and I think it's simply not worth putting so
much time and effort into something that inevitably only very few people will
show an interest in.

Regards,
Harald.
-- 
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  (ETSI EN 300 175-7 Ch. A6)
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Re: [A51] Reporting in..

2010-07-24 Thread Harald Welte
Guys,

what is wrong with you (sorry)?

I've been doing software development related to GSM for quite some time now,
have contributed to airprobe and am now mostly working on OpenBSC and
OsmocomBB.

The problem with regard to practical GSM A5 cracking is not that hardware
is too expensive or that you need to do your own custom hardware.

The problem is that everybody wants a solution / software / ... but very
few people actually are willing to put in the required time, sit down,
get their hands dirty and make it work.

The state of airprobe's various receivers (tvoid, gsmsp, gsm-receiver) has
only improved marginally throughout the last years.  Even today, they are
nothing more than a proof of concept.  They're far from what somebody would
want to do actual real-world intercept.  They don't even support the various
GSM channel types, they don't contain the neccessarry frequency / gain control
loops for long-time reception, ...

This has all been clear for years.  Work in this area is completely unrelated
to the actual A5/1 cracking and the rainbow tables.  There was no dependency
on the rainbow tables needing to be completed before work on the airprobe
receiver code could have been done.

During the same timeframe, a really great Free Software GSM receiver
implementation has been released publicly:  That of OpenBTS.  Yet, nobody
has lifted a finger and transformed that implementation (and its contained
laurent approximation based demodulation code) into a new airprobe receiver.

Piotr is one of the few guys who actually contributed, and I'd like to express
my gratitude for his work.

But whether you use a USRP2, a USD 20,000 military SDR or a small custom
cheap board will not change the fact that somebody still needs to write good
demodulaton/decoding software.  And any work spent on new hardware development
is not going to bring any progress to the project.

Please focus your scarce resources where it is really needed...

-- 
- Harald Weltehttp://laforge.gnumonks.org/

"Privacy in residential applications is a desirable marketing option."
  (ETSI EN 300 175-7 Ch. A6)
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Re: [A51] Reporting in..

2010-07-24 Thread Clemens Gruber
Yes, it's not about rushing to buy big and expensive hardware, it's
about rather building something minimal and less expensive, than buying
two ursp's.
We would only have to plan and produce the pcb's altogether. Maybe the
ordering of the components could also be done together for getting a
better price, but that's not absolutely necessary.

Especially for people from Europe ( particularly students ;) ), the USRP
is a little bit too expensive (in my opinion).

What do you think?

On Sat, 2010-07-24 at 17:14 +0200, Peter Stuge wrote:
> Sylvain Munaut wrote:
> > Seems to me that suddenly everybody is rushing to buy big and
> > expensive hardware 
> 
> This is getting a little off-topic, but I would instead build
> something minimal from scratch.
> 
> 
> //Peter
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Re: [A51] Reporting in..

2010-07-24 Thread Peter Stuge
Sylvain Munaut wrote:
> Seems to me that suddenly everybody is rushing to buy big and
> expensive hardware 

This is getting a little off-topic, but I would instead build
something minimal from scratch.


//Peter
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Re: [A51] Reporting in..

2010-07-24 Thread Cal Leeming [Simplicity Media Ltd]
I think this is one of those subjects which could be debated over and over,
but really only practical tests will ever provide real proof that a method
does or doesn't work. Yes, it would take a considerable amount of time, but
you also have to factor in the amount of knowledge you would gain by
effectively building your own hardware to replace that of the USRP.
Obviously, using old hardware would probably limit you to only a few
channels at a time, but at the same time, if you wanted to watch the whole
GSM spectrum, you'd need more than just a single USRP, and that's when it
starts getting expensive!

Sometimes, these projects aren't just about the end goal, but also how much
fun you have and what you learn along the way, you know?


On Sat, Jul 24, 2010 at 3:04 PM, Sylvain Munaut <246...@gmail.com> wrote:

> > I agree with Peter. It is completely useless to waste time on old
> hardware.
>
> But it'd make for dead cheap sniffer ...
>
> > There are many groups that try that without success, as each hardware was
> > done with physical limitations.
>
> Really ? do you have any specific examples of failed attempt and their
> reason ?
>
>
> > What i consider, is to contact Ettus people and ask them to prepare a new
> > device with more Mhz of bandwith. (maybe we could join interested people
> > here to setup an initial multi-group list order).
>
> Just my 2cent but before building better hardware, maybe it'd be
> useful to just exploit the one we have. AFAICT airprobe isn't exactly
> very advanced yet ...
>
> Seems to me that suddenly everybody is rushing to buy big and
> expensive hardware 
>
>
> Cheers,
>
>Sylvain
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Re: [A51] Reporting in..

2010-07-24 Thread Sylvain Munaut
> I agree with Peter. It is completely useless to waste time on old hardware.

But it'd make for dead cheap sniffer ...

> There are many groups that try that without success, as each hardware was
> done with physical limitations.

Really ? do you have any specific examples of failed attempt and their reason ?


> What i consider, is to contact Ettus people and ask them to prepare a new
> device with more Mhz of bandwith. (maybe we could join interested people
> here to setup an initial multi-group list order).

Just my 2cent but before building better hardware, maybe it'd be
useful to just exploit the one we have. AFAICT airprobe isn't exactly
very advanced yet ...

Seems to me that suddenly everybody is rushing to buy big and
expensive hardware 


Cheers,

Sylvain
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[A51] Kraken now on GPU

2010-07-24 Thread Frank A. Stevenson
I just finished a major overhaul of the ATI shared library, and Kraken
is now able to take advantage of the speed that is offered by the GPU.
The work is not finished yet, as I want to further reduce latency by
cracking several bursts in parallel, this will better utilize the GPU
pipeline.

At any rate I have it to the point where disk IO is the bottleneck, and
to my dismay I discovered that 2 of my disks were much slower than the
others, and a job will only go as fast as the slowest disk allows for.
It could be the motherboard / controller, or the disks themselves. I
need to investigate.

Kraken will only load the ATI shared library if it is present, so
A5Ati.so will have to be placed manually in the working directory (same
as kraken) and work will automatically offloaded to the GPU. The final
keysearch is still done on the CPU, but this is limited to just 1 round
of the rainbow table, the GPU handles the rest.

As for distribution of the tables, I have gotten several requests for
having disks shipped, payed for with PayPal. I am not sure I really
trust this company to not freeze the accounts if someone complains about
the contents of "ext3 preformatted 2TB disks." I should be able to
deliver these at cost for ~250 USD, this includes Norwegian sales tax
(25%) which I haven't found a way to defray. But perhaps someone on the
list could do better than this and set up shop in a country where
overall costs are lower? And ideally, quality packaging materials are
readily available :-)  (We have already suffer 1 unfortunate disk crash)

Frank




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Re: [A51] A51 Digest, Vol 14, Issue 13

2010-07-24 Thread zero cool
 @Javier
from where I can find find this Asiacrypt paper

On 7/24/10, a51-requ...@lists.reflextor.com
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>1. Re: Reporting in.. (Peter Stuge)
>2. Re: Reporting in.. (javier falbo)
>
>
> --
>
> Message: 1
> Date: Sat, 24 Jul 2010 06:26:32 +0200
> From: Peter Stuge 
> Subject: Re: [A51] Reporting in..
> To: a51@lists.reflextor.com
> Message-ID: <20100724042632.25318.qm...@stuge.se>
> Content-Type: text/plain; charset=us-ascii
>
> Cal Leeming [Simplicity Media Ltd] wrote:
>> Personally, I think it would be a really cool idea to start up work
>> shops which would look primarily at extracting the transceivers out
>> of cheap/unwanted handsets, and putting them to a good use. It
>> would certainly be a lot more fun than just paying for the hardware
>> :)
>
> Sorry to ruin the fun, but I am more than certain that the reverse
> engineering effort required per handset platform and the fairly high
> integration level of handsets make that a much too inefficient
> option.
>
>
> //Peter
>
>
> --
>
> Message: 2
> Date: Sat, 24 Jul 2010 04:47:03 +
> From: javier falbo 
> Subject: Re: [A51] Reporting in..
> To: , 
> Message-ID: 
> Content-Type: text/plain; charset="iso-8859-1"
>
>
> I agree with Peter. It is completely useless to waste time on old hardware.
> There are many groups that try that without success, as each hardware was
> done with physical limitations.
>
> What i consider, is to contact Ettus people and ask them to prepare a new
> device with more Mhz of bandwith. (maybe we could join interested people
> here to setup an initial multi-group list order).
>
> In order to monitor more data channel simultaneosly, and prepare the next
> step which is the 3g (kasumi), which is not so difficult as the algorythm
> could be decoded very fast with last Asiacrypt paper.
>
> Javier
>
>> Date: Sat, 24 Jul 2010 06:26:32 +0200
>> From: pe...@stuge.se
>> To: a51@lists.reflextor.com
>> Subject: Re: [A51] Reporting in..
>>
>> Cal Leeming [Simplicity Media Ltd] wrote:
>> > Personally, I think it would be a really cool idea to start up work
>> > shops which would look primarily at extracting the transceivers out
>> > of cheap/unwanted handsets, and putting them to a good use. It
>> > would certainly be a lot more fun than just paying for the hardware
>> > :)
>>
>> Sorry to ruin the fun, but I am more than certain that the reverse
>> engineering effort required per handset platform and the fairly high
>> integration level of handsets make that a much too inefficient
>> option.
>>
>>
>> //Peter
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-- 
Thanks.
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