Hi Cor, I'm certain that what you describe or something similar is being used by the Tesla owned SuperCharger stations. The SuperCharger access was included in the higher end models, but a purchased option on the base model. Because of that, I'm sure they have authentication on the SuperCharger stations.
However, the HPWC are different. They are privately owned and often purchased by owners for installation in their garage. Even if furnished or funded partially by Tesla, they are still controlled by the local business. The HPWC don't have any network connection of way to authenticate or charge for access. The way that Tesla did their connector, it is more convenient to use the proprietary connector. Using the J1772 adapter is another part that has to be installed and removed, and another step. The adapter must be removed to close the charging access door. There are news stories about a prototype HPWC to J1772 adapter being tested. Nothing recently that I saw, though. See: http://longtailpipe.com/2015/11/09/new-ev-charging-adapter-lets-j1772-car-owners-use-tesla-hpwc-charging-stations-cool-or-theft/ Mike On April 19, 2016 10:05:04 PM MDT, Cor van de Water via EV <[email protected]> wrote: >I have the suspicion (never even charged at a Tesla station and >certainly never been exposed to the protocol) that if the engineers at >Tesla are worth their salt, that even though the chargers are not >networked, they probably will ask the car to identify itself before >starting a charging session, >because without such a handshake, what keeps the world from charging >for >free at the Tesla chargers? >It is relatively easy to create an asymmetric encrypted authentication, >whereby you can easily check with the public key that it is a valid >authentication, without being able to *generate* a valid >authentication, >since that requires the private key. We do this to avoid hackers from >buying the lowest cost version of our product and upgrading it to a >higher featured model, since the license key is encrypted in such a >way. >Tesla can generate keys for their vehicles that are used for the >communication with the chargers (and other identification purposes). > >So, while it may be a great learning experience to try and >reverse-engineer the Tesla charging protocol in similar way that the >Leaf was used to record Chademo charging sessions, don't be surprised >if >there are encrypted messages that will prevent you from even playing >back a recorded charging session to a charging station, to lure it into >giving you a charge. > >Hope this gives some insight, > >Cor van de Water >Chief Scientist >Proxim Wireless > >office +1 408 383 7626 Skype: cor_van_de_water >XoIP +31 87 784 1130 private: cvandewater.info > >http://www.proxim.com > >This email message (including any attachments) contains confidential >and >proprietary information of Proxim Wireless Corporation. If you >received >this message in error, please delete it and notify the sender. Any >unauthorized use, disclosure, distribution, or copying of any part of >this message is prohibited. > > >-----Original Message----- >From: EV [mailto:[email protected]] On Behalf Of Thomas Brannan >via EV >Sent: Tuesday, April 19, 2016 8:39 PM >To: brucedp5; Electric Vehicle Discussion List >Subject: Re: [EVDL] Tesla's (cuckoo) EVSE grants ... > >Sounds like a great opportunity for an entrepreneur - that HPWC coupler >to >j1772 adaptor. Kickstarter or indiegogo? >Tom > >On Tue, Apr 19, 2016 at 2:13 PM, brucedp5 via EV <[email protected]> >wrote: > >> >> >> With all the coming election noise, and the possiblity of no more >EVSE >> grants ringing in my ears, on a search I could not find a renewal of >the >> U.S. Fed grant to cover some of the cost of installing public EVSE as >> before. >> >> But I found a self-promo news item touting a business' new EVSE. I >noticed >> their EVSE were two (proprietary) Tesla HPWC EVSE, that no other >plugin but >> a Tesla EV can use. >> >> I sent a message off to the business' contact (a NJ mall), letting >them >> know >> that non-Tesla drivers are going to feel rebuffed, thus they could >lose >> plugin driver business. >> >> They kindly replied letting me know their HPWC EVSE was part of a >Tesla >> Destination Charging grant (Tesla paid for it). See >> >http://www.teslarati.com/becoming-tesla-destination-charging-participant >/ >> Becoming a Tesla Destination Charging Participant >> Feb 25, 2016 >> [link >> https://teslafactory.wufoo.com/forms/q7b8imo1g0og2v/ >> contact Tesla's Destination Charging program >> ] >> >> BTW there is no HPWC to j1772 adaptors drivers can buy, so when HPWC >are >> installed, j1772 L2 drivers are shut-out. While I am not against >Tesla, >> helping to install 'Tesla-only' (proprietary) EVSE is the same >problem >> drivers had back in the late 1990's-on. >> >> GM would almost give away their inductive (proprietary, wireless) >lpi,spi >> EVSE, which would displace either one or both of the public EVSE >being >> installed at a host site, paid for with CA DMV fees (many EVSE sites >had >> two >> spi and no conductive avcon EVSE). This cuckoo approach to public >EVSE >> domination ... >> >> [link >> https://en.wikipedia.org/wiki/Cuckoo >> Cuckoo ... Many species are brood parasites, laying their eggs in the >nests >> of other species, ... raise their ... young >> https://en.wikipedia.org/wiki/Brood_parasite >> ] >> >> is bad for the EV-cause, unless a HPWC coupler to j1772 adaptor is >made >> available for plugin drivers to buy. Since HPWC EVSE are >non-networked, >> buying an adaptor would be paid off with the free L2 charging. >> >> >> >> >> For EVLN EV-newswire posts use: >> http://evdl.org/evln/ >> >> >> {brucedp.150m.com} >> >> -- >> View this message in context: >> >http://electric-vehicle-discussion-list.413529.n4.nabble.com/Tesla-s-cuc >koo-EVSE-grants-tp4681606.html >> Sent from the Electric Vehicle Discussion List mailing list archive >at >> Nabble.com. >> _______________________________________________ >> UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub >> http://lists.evdl.org/listinfo.cgi/ev-evdl.org >> Read EVAngel's EV News at http://evdl.org/evln/ >> Please discuss EV drag racing at NEDRA ( >> http://groups.yahoo.com/group/NEDRA) >> >> >-------------- next part -------------- >An HTML attachment was scrubbed... >URL: ><http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20160419/a90a >23fc/attachment.htm> >_______________________________________________ >UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub >http://lists.evdl.org/listinfo.cgi/ev-evdl.org >Read EVAngel's EV News at http://evdl.org/evln/ >Please discuss EV drag racing at NEDRA >(http://groups.yahoo.com/group/NEDRA) > >_______________________________________________ >UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub >http://lists.evdl.org/listinfo.cgi/ev-evdl.org >Read EVAngel's EV News at http://evdl.org/evln/ >Please discuss EV drag racing at NEDRA >(http://groups.yahoo.com/group/NEDRA) _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Read EVAngel's EV News at http://evdl.org/evln/ Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
