Hmm... Registering an OID dedicated to express this case should be feasible, 
and perfectly within the ASN.1 rules. One question - where in the OID tree 
would it live, as offhand I don't have any idea. It can't be too deep down, and 
also, it better be fairly short.  

>From the ASN.1 point of view - there's nothing dumb in this idea. There's 
>plenty of MIB objects expressing/representing all kinds of things - might as 
>well add this.



On 3/22/19, 12:34, "openssl-users on behalf of Michael Wojcik" 
<openssl-users-boun...@openssl.org on behalf of michael.woj...@microfocus.com> 
wrote:

    > From: openssl-users [mailto:openssl-users-boun...@openssl.org] On Behalf 
Of
    > Viktor Dukhovni
    > Sent: Thursday, March 21, 2019 14:07
    > To: openssl-users@openssl.org
    >
    > > On Mar 21, 2019, at 1:57 PM, Viktor Dukhovni 
<openssl-us...@dukhovni.org>
    > wrote:
    > >
    > >    2.  Emit a "harmless" default OID (such as 0.0), returning to
    > >     the behaviour prior to 1.0.1i
    
    What about registering a new OID for "missing required object"? Then at 
least there'd be a standard way to represent this case, and other parsers could 
decide to accommodate it however they prefer.
    
    I'm by no means an ASN.1 expert, so this may be a dumb idea.
    
    --
    Michael Wojcik
    Distinguished Engineer, Micro Focus
    
    
    
    

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