Re: MokSec - The Security Framework
Jan de Haan wrote: On Mon, Jul 14, 2008 at 4:50 PM, Kalle Happonen [EMAIL PROTECTED] wrote: But there are places where you can get SIM cards with built in encyption/decryption keys, and a certificate (PKI). I agree. Would you care to elaborate (link)? There's a manufacturer of a microSD smartcard [1] in Germany, which looks quite promising. Such a smartcard could be used in many security applications. Cheers, Adrian __ [1] - http://www.certgate.com/web_de/produkte/ ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
Re: modulated data over GSM voice (was Re: Data over normal GSM call)
Harald Welte wrote: Just to give you a summary judgement: Running any kind of voice-encoded data over a regular voice channel of a GSM phone is _extremely_ unlikely to work. There are a number of different codecs in use. Which codec is determined by the network. There is echo cancellation at potentially multiple locations during the call. There might be one or multiple transcoders of the voice codec along the road. If you can manage to design a modulation and coding scheme that survives all (or even most) of the stages above, I think you have achieved something great. I doubt you will get more than 300bps though :) Somebody already has. May I point you towards the paper Real Time End to End Secure Voice Communications over GSM Voice Channel by N.N. Katugampala, K.T. Al-Naimi, S. Villette, and A.M. Kondoz [1]. The authors claim to have achieved a throughput of 3 kbps with a 2.9% BER. By adding error correction codes the throughput went down to 1.2 kbps with a BER of 0.03%. Unfortunately they have not released any code and I could not find much detail beyond a couple more papers found at [2]. Nevertheless highly interesting to read :) -Adrian [1] - http://personal.ee.surrey.ac.uk/Personal/N.Katugampala/pubs/eusipco05.pdf [2] - http://personal.ee.surrey.ac.uk/Personal/N.Katugampala/ ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
Re: Pocket Supercomputing?
Adrian-Ken Rueegsegger wrote: I made some nx packages for openmoko a while ago but never got around to test them. I did get nxcl and it's respective dependencies to compile without errors. If anybody is interested let me know. The packages are now available from the following git repository: git clone git://openmoko.technodrom.ch/openmoko-overlay/ Feedback and of course patches are always welcome :) -Adrian ___ OpenMoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
Re: Pocket Supercomputing?
Hello, Al Johnson wrote: On Thursday 31 January 2008, Lally Singh wrote: On Jan 31, 2008 5:31 PM, joerg [EMAIL PROTECTED] wrote: Am Do 31. Januar 2008 schrieb Shawn Rutledge: [...] My goal is to have applications written in arbitrary languages, running on app servers, using a terse UI meta-language *) to transfer the user-interaction parts of the apps to the thin client (more or less, depending on the processing power/bandwidth tradeoffs on the client side). *) So it seems you're talking about X. Don't you? (Well terse is relative) something like [EMAIL PROTECTED] ssh -X -l itsME myserver.dyndns.org konqueror Eh, these days it's probably better off being AJAX based. X widget sets haven't been designed for good use over slower network links in ages. May as well take advantage of web standards, and we can likely avoid having to write/invent anything specifically for the neo. NX anyone? The nxcl libs should make it fairly easy to do a front end for OpenMoko. It works well on restricted bandwidth and can be used for either individual apps or a whole desktop. I made some nx packages for openmoko a while ago but never got around to test them. I did get nxcl and it's respective dependencies to compile without errors. If anybody is interested let me know. -Adrian ___ OpenMoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
