[Anima] creating iDevID certs with openssl

Robert Moskowitz <rgm-sec@htt-consult.com> Mon, 14 August 2017 17:45 UTC

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From: Robert Moskowitz <rgm-sec@htt-consult.com>
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Date: Mon, 14 Aug 2017 13:44:42 -0400
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Subject: [Anima] creating iDevID certs with openssl
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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

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

Are there any extant examples?

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