[Ovmsdev] Moving to a production cycle

[Mark Webb-Johnson]

Plan is as follows:

Serial numbers are of the form:

YYYYBBNNNNN

* YYYY is four digit year. For example; 2018
* BB is two digit batch. For example; 00, 01, 02, etc
* NNNN is four digit sequence. For example; 0001, 0002, etc

First production batch is 2018010001 - 2018010120.

That would be 10 digits. Not the most secure, and pretty predictable, but better than a simple “OVMS”.

I’m asking if the software they have can generate random characters. If it can, then will add four random letters onto the end.

Regards, Mark.

> On 4 Mar 2018, at 11:23 AM, Greg D. <gregd2350 at gmail.com> wrote:
> 
> Hi Mark,
> 
> WPA2 PSK passphrases for WiFi need to be at least 8 characters.  Do the serial numbers have leading zeros?
> 
> Greg
> 
> 
> Mark Webb-Johnson wrote:
>> 
>> They’ll do pretty much whatever we ask them to do.
>> 
>> 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.
>> 
>> What I have at the moment is:
>> 
>> ********************************************************************************
>> ** TOOLS
>> ********************************************************************************
>> 
>> 1] DB9 CAN Bus QC tool
>> 
>>    DB9 Female with:
>>     * Pins 2, 4, and 6 connected (all CAN-L signals)
>>     * Pins 5, 7, and 8 connected (all CAN-H signals)
>>     * R120 between pins 2 and 5
>>     * External 12V power connector
>>       * GND on pin 3
>>       * +12V on pin 9
>> 
>> ********************************************************************************
>> ** PRODUCTION STEPS
>> ********************************************************************************
>> 
>> 1] Default wifi AP and module passwords
>> 
>>    OVMS> config set wifi.ap OVMS <serialnumber>
>>    OVMS> config set password module <serialnumber>
>> 
>>    Where <serialnumber> is the serial number from the label on the enclosure.
>> 
>> 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.
>> 
>> 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.
>> 
>> Regards, Mark.
>> 
>>> On 3 Mar 2018, at 4:07 AM, Michael Balzer <dexter at expeedo.de <mailto:dexter at expeedo.de>> wrote:
>>> 
>>> Mark,
>>> 
>>> Am 26.02.2018 um 07:28 schrieb Mark Webb-Johnson:
>>>> 
>>>> I’ve asked the China side. Specifically:
>>>> 
>>>> Can you print serial number stickers for these modules? I can provide design - and we can print a large batch.
>>>> Then, during manufacturing, have one step to enter serial number as password into module, like:
>>>> Flash
>>>> Connect terminal
>>>> QC checks
>>>> New step to type: config set wifi.ap OVMS <serialnumber>
>>> 
>>> Just to double check: so we won't set the module password, only the AP pass phrase?
>>> 
>>> Has setting the module password any drawbacks?
>>> 
>>> 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.
>>> 
>>> Setting the module password would secure the webserver as well.
>>> 
>>> Regards,
>>> Michael
>>> 
>>> -- 
>>> Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
>>> Fon 02333 / 833 5735 * Handy 0176 / 206 989 26
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>> 
>> 
>> 
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