Making some progress.

On 08/14/2017 01:44 PM, Robert Moskowitz wrote:
I have just joined this list. So if this is covered in the archives anywhere, my weak search foo did not uncover it...

Has anyone created iDevID certs with openssl including subjectAltName with hardwareModuleName?

I have been working on this for a few days and have worked out HOW to even get certs to contain SAN, particularly going the csr route. I have learned on the openssl list that HMN is not directly supported and that you have to use othername. Something like

[ req_ext ]
subjectAltName = otherName:1.3.6.1.5.5.7.8.4;SEQ:hmodname

[ hmodname ]
hwType = OID:1.2.3.4 # Whatever OID you want.
hwSerialNum = FORMAT:HEX,OCT:01020304 # Some hex

This produces a subjectAltName content of:

    0:d=0  hl=2 l=  27 cons: SEQUENCE
    2:d=1  hl=2 l=  25 cons:  cont [ 0 ]
    4:d=2  hl=2 l=   8 prim:   OBJECT            :1.3.6.1.5.5.7.8.4
   14:d=2  hl=2 l=  13 cons:   cont [ 0 ]
   16:d=3  hl=2 l=  11 cons:    SEQUENCE
   18:d=4  hl=2 l=   3 prim:     OBJECT            :1.2.3.4
   23:d=4  hl=2 l=   4 prim:     OCTET STRING      [HEX DUMP]:01020304


I suspect that hwtype is a full vendor OID for registering this device. Say my company, HTT Consulting makes sensor widgets. The OID for that could be:

1.3.6.1.4.1.6715.10.1 (where 10 is HTT's devices and 1 is the sensor widget).

But I am not sure what exactly to do with hwType and hwSerialNum

Are there any extant examples?

So googling around for examples and not finding any. But then my search foo has always been weak.


Currently there is no way to feed any SAN value in at the command like 'openssl req'. It has to go into the config file, so once I work out WHAT to but into these fields, I will have to do some kludgly stuff to stuff values into the config then run the command. There are examples of this around for SANs of IP, DNS, etc.

BTW, so far I have a simple guide for making a pki of ECDSA certs using openssl. I would be willing to share what I have done todate. The 802.1AR cert section is understandably incomplete...

Bob

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