<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Plan is as follows:<div class=""><br class=""></div><blockquote style="margin: 0 0 0 40px; border: none; padding: 0px;" class=""><div class=""><div class=""><font face="Andale Mono" class=""><span style="font-size: 14px;" class="">Serial numbers are of the form:</span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-size: 14px;" class=""><br class=""></span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-size: 14px;" class="">YYYYBBNNNNN</span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-size: 14px;" class=""><br class=""></span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-size: 14px;" class="">* YYYY is four digit year. For example; 2018</span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-size: 14px;" class="">* BB is two digit batch. For example; 00, 01, 02, etc</span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-size: 14px;" class="">* NNNN is four digit sequence. For example; 0001, 0002, etc</span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-size: 14px;" class=""><br class=""></span></font></div><div class=""><font face="Andale Mono" class=""><span style="font-size: 14px;" class="">First production batch is 2018010001 - 2018010120.</span></font></div></div></blockquote><div class=""><br class=""></div><div class=""><div class="">That would be 10 digits. Not the most secure, and pretty predictable, but better than a simple “OVMS”.</div></div><div class=""><br class=""></div><div class="">I’m asking if the software they have can generate random characters. If it can, then will add four random letters onto the end.</div><div class=""><br class=""></div><div class="">Regards, Mark.</div><div class=""><br class=""><div><blockquote type="cite" class=""><div class="">On 4 Mar 2018, at 11:23 AM, Greg D. <<a href="mailto:gregd2350@gmail.com" class="">gregd2350@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class="">
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<div text="#000000" bgcolor="#FFFFFF" class="">
Hi Mark,<br class="">
<br class="">
WPA2 PSK passphrases for WiFi need to be at least 8 characters. Do
the serial numbers have leading zeros?<br class="">
<br class="">
Greg<br class="">
<br class="">
<br class="">
<div class="moz-cite-prefix">Mark Webb-Johnson wrote:<br class="">
</div>
<blockquote type="cite" cite="mid:9CBD2939-6C54-4BEB-B4B7-C41B857E9DD0@webb-johnson.net" class="">
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<div class=""><br class="">
</div>
They’ll do pretty much whatever we ask them to do.
<div class=""><br class="">
</div>
<div class="">To try to formalise this, so everyone can see, I’ve
created a production/qc/production_notes.txt file with the
production notes that will be given to the China side. This
should document all the production and QC steps they should do.</div>
<div class=""><br class="">
</div>
<div class="">What I have at the moment is:</div>
<div class=""><br class="">
</div>
<blockquote style="margin: 0 0 0 40px; border: none; padding:
0px;" class="">
<div class="">
<div class=""><font class="" face="Andale Mono"><span style="font-size: 14px;" class="">********************************************************************************</span></font></div>
<div class=""><font class="" face="Andale Mono"><span style="font-size: 14px;" class="">** TOOLS</span></font></div>
<div class=""><font class="" face="Andale Mono"><span style="font-size: 14px;" class="">********************************************************************************</span></font></div>
<div class=""><font class="" face="Andale Mono"><span style="font-size: 14px;" class=""><br class="">
</span></font></div>
<div class=""><font class="" face="Andale Mono"><span style="font-size: 14px;" class="">1] DB9 CAN Bus QC tool</span></font></div>
<div class=""><font class="" face="Andale Mono"><span style="font-size: 14px;" class=""><br class="">
</span></font></div>
<div class=""><font class="" face="Andale Mono"><span style="font-size: 14px;" class=""> DB9 Female with:</span></font></div>
<div class=""><font class="" face="Andale Mono"><span style="font-size: 14px;" class=""> * Pins 2, 4, and 6
connected (all CAN-L signals)</span></font></div>
<div class=""><font class="" face="Andale Mono"><span style="font-size: 14px;" class=""> * Pins 5, 7, and 8
connected (all CAN-H signals)</span></font></div>
<div class=""><font class="" face="Andale Mono"><span style="font-size: 14px;" class=""> * R120 between
pins 2 and 5</span></font></div>
<div class=""><font class="" face="Andale Mono"><span style="font-size: 14px;" class=""> * External 12V
power connector</span></font></div>
<div class=""><font class="" face="Andale Mono"><span style="font-size: 14px;" class=""> * GND on pin 3</span></font></div>
<div class=""><font class="" face="Andale Mono"><span style="font-size: 14px;" class=""> * +12V on pin 9</span></font></div>
<div class=""><font class="" face="Andale Mono"><span style="font-size: 14px;" class=""><br class="">
</span></font></div>
<div class=""><font class="" face="Andale Mono"><span style="font-size: 14px;" class="">********************************************************************************</span></font></div>
<div class=""><font class="" face="Andale Mono"><span style="font-size: 14px;" class="">** PRODUCTION STEPS</span></font></div>
<div class=""><font class="" face="Andale Mono"><span style="font-size: 14px;" class="">********************************************************************************</span></font></div>
<div class=""><font class="" face="Andale Mono"><span style="font-size: 14px;" class=""><br class="">
</span></font></div>
<div class=""><font class="" face="Andale Mono"><span style="font-size: 14px;" class="">1] Default wifi AP and
module passwords</span></font></div>
<div class=""><font class="" face="Andale Mono"><span style="font-size: 14px;" class=""><br class="">
</span></font></div>
<div class=""><font class="" face="Andale Mono"><span style="font-size: 14px;" class=""> OVMS> config set
wifi.ap OVMS <serialnumber></span></font></div>
<div class=""><font class="" face="Andale Mono"><span style="font-size: 14px;" class=""> OVMS> config set
password module <serialnumber></span></font></div>
<div class=""><font class="" face="Andale Mono"><span style="font-size: 14px;" class=""><br class="">
</span></font></div>
<div class=""><font class="" face="Andale Mono"><span style="font-size: 14px;" class=""> Where
<serialnumber> is the serial number from the label
on the enclosure.</span></font></div>
</div>
</blockquote>
<div class=""><br class="">
</div>
<div class="">I think that should set both the module default and
auto wifi AP passwords to the serial number of the module. That
will be on a label on the underside of the module.</div>
<div class=""><br class="">
</div>
<div class="">You are correct: this is a connected car, with
possibly disastrous consequences should somebody malicious gain
access. Best to err on the side of caution.</div>
<div class=""><br class="">
</div>
<div class="">Regards, Mark.</div>
<div class=""><br class="">
<div class="">
<blockquote type="cite" class="">
<div class="">On 3 Mar 2018, at 4:07 AM, Michael Balzer <<a href="mailto:dexter@expeedo.de" class="" moz-do-not-send="true">dexter@expeedo.de</a>> wrote:</div>
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<div class="">
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charset=UTF-8" class="">
<div text="#000000" bgcolor="#FFFFFF" class=""> Mark,<br class="">
<br class="">
<div class="moz-cite-prefix">Am 26.02.2018 um 07:28
schrieb Mark Webb-Johnson:<br class="">
</div>
<blockquote type="cite" cite="mid:B7AB3971-3FB1-4717-98FF-388A790206E7@webb-johnson.net" class="">
<div class=""><br class="">
</div>
I’ve asked the China side. Specifically:
<div class=""><br class="">
</div>
<div class="">
<ol class="MailOutline">
<li class="">Can you print serial number stickers
for these modules? I can provide design - and we
can print a large batch.</li>
<li class="">Then, during manufacturing, have one
step to enter serial number as password into
module, like:</li>
<ol class="">
<li class="">Flash</li>
<li class="">Connect terminal</li>
<li class="">QC checks</li>
<li class="">New step to type: config set
wifi.ap OVMS <serialnumber></li>
</ol>
</ol>
</div>
</blockquote>
<br class="">
Just to double check: so we won't set the module
password, only the AP pass phrase?<br class="">
<br class="">
Has setting the module password any drawbacks?<br class="">
<br class="">
I'm asking because I assume the SMS channel -as soon as
implemented- will also provide command access, which
would be open by default as well without a module
password.<br class="">
<br class="">
Setting the module password would secure the webserver
as well.<br class="">
<br class="">
Regards,<br class="">
Michael<br class="">
<br class="">
<pre class="moz-signature" cols="160">--
Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
Fon 02333 / 833 5735 * Handy 0176 / 206 989 26
</pre>
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