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CCS/CC3220SF-LAUNCHXL: Searching for digcert_high_assurance_ca.der certificate file

Dave Warner26
Intellectual 605 points
Part Number: CC3220SF-LAUNCHXL
Other Parts Discussed in Thread: UNIFLASH

Tool/software: Code Composer Studio

Hello

I have hit a snag on trying to get the OTA cloud demo to work.

I built my binary and I want to flash it to the CC3220 with uniflash.
In the "user files" section, it is referring to the "digcert_high_assurance_ca.der" file (the instructions say to go to github or dropBox to download this file).
Yet, I go to either site and do a search for it and I get no results.
I even did a google search on this file and I get nothing - does anyone know WHERE I can get this file?
Thanks!
  • 0
    TI__Mastermind 40965 points
    Hi Dave,

    I typically just pull needed root CA files directly from my PC. Some instructions can be found here:
    e2e.ti.com/.../2478357

    Let me know if you need further clarification or more help.

    Regards,
    Michael
  • 0 in reply to Michael Reymond
    Intellectual 605 points

    Thanks for the response - I gave that a try and found what I "thought" was the certificate (see attached graphic)

    But, when I exported it, it gave me the option to name it so I gave it the same name of "digcert_high_assurance_ca" and it

    exported as "digcert_high_assurance_ca.cer" with a different extension (if gave me ".cer", not ".der")

    I added this new file to my uniflash build (in the user files section) and created an SLI for download - when I burned it to the device, the device did not run after the download or run after a power cycle.

    So, I don't think that apporoach is going to work.

    The "Over_The_Air_Update_Guide.html" instructions explicity said to download this particular "digcert_high_assurance_ca.der" certificate from githb or dropbox - like I said, when I go to their sites and even google it, I get NO RESULTS.

    Does anybody know how to get "digcert_high_assurance_ca.der" from github or dropbox? Or, can someone email me a copy of that file?

    I'm at a total loss for getting this OTA demo up and running.

  • 0 in reply to Dave Warner26
    TI__Mastermind 40965 points
    Hi Dave,

    In your screenshot above, you don't have the right root CA certificate selected. You should be exporting the "DigiCert High Assurance EV Root CA" file.

    When exporting it, you can let it be renamed as a .cer file. The important thing is that when adding the file in Uniflash, you are naming it what the OTA demo expects to see - "digcert_high_assurance_ca.der". Try exporting and flashing that certificate and see if the demo runs differently. If that doesn't work, then providing the terminal output you are seeing from the demo would help with further debug.

    Regards,
    Michael