Re: DE-crypting calls
[EMAIL PROTECTED] schrieb: > Am Fr 16. Mai 2008 schrieb Al Johnson: > >> On Friday 16 May 2008, ramsesoriginal wrote: >> >>> I was just wondering: we have seen the problems of encryptingcalls. >>> But what about decrypting them? Let*s say someone hasa method to call >>> you with some sort of encryption.. would it be possible to write a >>> decryption for it? Maybe public key? >>> >> Depends what sort of calls you mean. If it's GSM voice calls then the same >> problems apply as already discussed. If you're talking about a data link >> encrypted end to end and passing voice data then it's possible, probably >> using established standards. You could make an OpenVPN or IPsec tunnel end >> > to > >> end, then use SIP, h323 or IAX2 over it. You could use one of the secured >> versions of SIP directly, at least one of which uses public keys, but none >> > of > >> them are universally accepted. >> > > What about ZRTP? (Zimmerman, PGP inventor). Have a look at twinkle.com! Via > GSM you can setup not only voice calls, but also fax and *DATA* calls with up > to 14400bps. Tunneling SIP and low bandwidth RTP/ZRTP through this link > should be feasible with low effort > maybe someone is able to port ekiga and zfone to the FR? So we can talk secure with a internetconnection over Bluetooth or Wlan. ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
Re: DE-crypting calls
On Tuesday 20 May 2008, [EMAIL PROTECTED] wrote: > Am Fr 16. Mai 2008 schrieb Al Johnson: > > On Friday 16 May 2008, ramsesoriginal wrote: > > > I was just wondering: we have seen the problems of encryptingcalls. > > > But what about decrypting them? Let*s say someone hasa method to call > > > you with some sort of encryption.. would it be possible to write a > > > decryption for it? Maybe public key? > > > > Depends what sort of calls you mean. If it's GSM voice calls then the > > same problems apply as already discussed. If you're talking about a data > > link encrypted end to end and passing voice data then it's possible, > > probably using established standards. You could make an OpenVPN or IPsec > > tunnel end to > > end, then use SIP, h323 or IAX2 over it. You could use one of the secured > > versions of SIP directly, at least one of which uses public keys, but > > none of them are universally accepted. > > What about ZRTP? (Zimmerman, PGP inventor). Have a look at twinkle.com! That's one of them. There's also MIKEY and SDES. What I meant by not being universally accepted is that none of them is implemented by all SIP clients, making interoperability somewhat hit and miss. I hope this will change soon! > Via > GSM you can setup not only voice calls, but also fax and *DATA* calls with > up to 14400bps. Tunneling SIP and low bandwidth RTP/ZRTP through this link > should be feasible with low effort Not only that but it has lower and less variable latency than the 'faster' connection methods. You should always get 9600bps so that's the bandwidth to aim for. There's a video of a presentation that covers most of this somewhere in the list archive. ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
Re: DE-crypting calls
Am Fr 16. Mai 2008 schrieb Al Johnson: > On Friday 16 May 2008, ramsesoriginal wrote: > > I was just wondering: we have seen the problems of encryptingcalls. > > But what about decrypting them? Let*s say someone hasa method to call > > you with some sort of encryption.. would it be possible to write a > > decryption for it? Maybe public key? > > Depends what sort of calls you mean. If it's GSM voice calls then the same > problems apply as already discussed. If you're talking about a data link > encrypted end to end and passing voice data then it's possible, probably > using established standards. You could make an OpenVPN or IPsec tunnel end to > end, then use SIP, h323 or IAX2 over it. You could use one of the secured > versions of SIP directly, at least one of which uses public keys, but none of > them are universally accepted. What about ZRTP? (Zimmerman, PGP inventor). Have a look at twinkle.com! Via GSM you can setup not only voice calls, but also fax and *DATA* calls with up to 14400bps. Tunneling SIP and low bandwidth RTP/ZRTP through this link should be feasible with low effort /j > You could even roll your own protocol using > TLS or something. > > ___ > Openmoko community mailing list > community@lists.openmoko.org > http://lists.openmoko.org/mailman/listinfo/community > ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
Re: DE-crypting calls
Some time ago, I stumbled upon a device that came in pairs and connected to the Sony Erricson T61i. It claimed that, when used on each end it encrypted the call. I suspect that the device contained some shared secret key. I wish I could recall the data on it, or where I saw it. If such a mediocre phone had an encryption add-on, could we not handle an encrypted call on our much more advanced hardware? I speak in theory only. I see no practicable reason to need to encrypt a call. I much prefer other ways to transmit secure data... R/ Joshua On Sat, May 17, 2008 at 6:05 AM, Philippe Guillebert < [EMAIL PROTECTED]> wrote: > ramsesoriginal wrote: > >> I was just wondering: we have seen the problems of encryptingcalls. >> But what about decrypting them? Let*s say someone hasa method to call >> you with some sort of encryption.. would it be possible to write a >> decryption for it? Maybe public key? >> > > Hi, > > I guess you should look into PigZip : > > http://www.hackles.org/cgi-bin/archives.pl?request=310 > > -- > Phyce > > > > ___ > Openmoko community mailing list > community@lists.openmoko.org > http://lists.openmoko.org/mailman/listinfo/community > ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
Re: DE-crypting calls
ramsesoriginal wrote: I was just wondering: we have seen the problems of encryptingcalls. But what about decrypting them? Let*s say someone hasa method to call you with some sort of encryption.. would it be possible to write a decryption for it? Maybe public key? Hi, I guess you should look into PigZip : http://www.hackles.org/cgi-bin/archives.pl?request=310 -- Phyce ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
Re: DE-crypting calls
On Friday 16 May 2008, ramsesoriginal wrote: > I was just wondering: we have seen the problems of encryptingcalls. > But what about decrypting them? Let*s say someone hasa method to call > you with some sort of encryption.. would it be possible to write a > decryption for it? Maybe public key? Depends what sort of calls you mean. If it's GSM voice calls then the same problems apply as already discussed. If you're talking about a data link encrypted end to end and passing voice data then it's possible, probably using established standards. You could make an OpenVPN or IPsec tunnel end to end, then use SIP, h323 or IAX2 over it. You could use one of the secured versions of SIP directly, at least one of which uses public keys, but none of them are universally accepted. You could even roll your own protocol using TLS or something. ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
DE-crypting calls
I was just wondering: we have seen the problems of encryptingcalls. But what about decrypting them? Let*s say someone hasa method to call you with some sort of encryption.. would it be possible to write a decryption for it? Maybe public key? -- My corner of the web: http://blog.ramsesoriginal.org ___ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community
