'lo Didn't appear in the wiki, so I figured I'd throw it out there first: compressed SMS for when a persistent TLS-encrypted and -compressed Jabber connection just isn't there (eg. if it would be too expensive in a particular locale), but you need to send "long" text messages. With SMS, every 140 bytes costs loads of money. (Yes, it's 140 bytes, people; 160 characters in 7-bit charsets.)
So. We can't very well send a compression dictionary along with each SMS. Instead, we'll start producing one upon sending the first SMS to another Moko user (might be necessary to mark Moko peers manually, or is there a way to identify them?). The recipient produces the same. The next message between the two will be compressed with the compression dictionary previously generated. The new data will deterministically modify the compression dictionary on both ends. These are cyclically numbered and several previous versions will be stored in case the parties get out of sync. Optional: Allow compression dictionary to be generated from a set of messages, and be transferred to another phone as a baseline (presumably when better connectivity is available). Or even as a final frozen dictionary, which would avoid possible races and other sync problems. Aside: Encrypt SMSs, either with a shared secret or a one-time pad similarly pre-copied between phones. That's it for tonight. Probably not very essential, but it's a thought. -- Mikko Rauhala - [EMAIL PROTECTED] - <URL:http://www.iki.fi/mjr/> Transhumanist - WTA member - <URL:http://www.transhumanism.org/> Singularitarian - SIAI supporter - <URL:http://www.singinst.org/> _______________________________________________ OpenMoko community mailing list [email protected] http://lists.openmoko.org/mailman/listinfo/community
