Re: [KEYPROV] Second Last Call: draft-ietf-keyprov-symmetrickeyformat (Symmetric Key Package Content Type) to Proposed Standard

[Sean Turner <[e-mail]>]

Simon Josefsson wrote:
> Sam Hartman <[e-mail]> writes:
> 
>>>>>>> "Simon" == Simon Josefsson <[e-mail]> writes:
>>     Simon> This document appears to have a normative reference to a
>>     Simon> patent:
>>
>>     Simon>    [LUHN] Luhn, H., "Luhn algorithm", US Patent 2950048,
>>     Simon> August 1960, http://patft.uspto.gov/netacgi/nph-
>>     Simon> Parser?patentnumber=2950048.
>>
>>     Simon> I cannot find a patent disclosure about this on file with the
>>     Simon> IETF:
>>
>>     Simon> https://datatracker.ietf.org/ipr/search/?option=document_search&document_search=draft-ietf-keyprov-symmetrickeyformat
>>
>>     Simon> I believe the authors should file a patent disclosure about
>>     Simon> this in order to comply with the spirit of RFC 3979 section
>>     Simon> 6.1.3.
>>
>> Simon, I'm not sure what the letter of that BCP says, but I think the
>> spirit  of the requirements is that we should have disclosures regarding
>> any IPR that may pose concerns for implementation.
>>
>>
>> As far as I can tell, this is an August 1960 patent.  It's old enough
>> that no license is required.  I do not see any concerns this poses.
>>
>> Am I missing something.
> 
> I did not notice the date.
> 
> More worrisome, I cannot read the reference.  The link goes to a page
> which says 'Full text is not available for this patent.  Click on
> "Images" button above to view full patent' and when I click on "Images"
> I get nothing because the page appears to require some non-standard
> plugin that I don't have installed.

This is a bad reference in both this document and the one I copied it 
from, draft-ietf-keyprov-pskc.  We both need to point to something else. 
  Wikipedia says that the LUHN algorithm is in "ISO/IEC 7812-1:2006 
Identification cards - Identification of issuers - Part 1: Numbering 
system."  As soon as I can confirm this (a bunch of searches seem to 
indicate that it is in that standard), I'll update the reference to the 
ISO standard.  I'll need to check on whether we need to submit something 
about the patent - it was published in 1960.

spt