Re: [openpgp] First remarks on the last I-D

The issue was not whether OCB is now patent free and can be used (it can and is). The question was whether it would be NIST approved soon or not, so GCM could be avoided while still retaining NIST compatibility.

Paul

Sent using a virtual keyboard on a phone

> On Jun 7, 2022, at 19:56, Ronald Tse <tse=40ribose.com@dmarc.ietf.org> wrote:
> 
> 
> Following up on Werner’s comment on OCB and Phil Rogaway:
> 
>> The Rogaway patent (US8321675B2) expired a year ago. The Jutla/IBM
>> patent (US6963976B1), which may be related to OCB, will also expire this
>> November. Let's ask Rogaway; actually this has been on the todo list of
>> the WG for years (to get a general grant like he did for OpenSSL).
> 
> 
> Phil has previously made this statement on OCB in the CFRG list:
> https://mailarchive.ietf.org/arch/msg/cfrg/qLTveWOdTJcLn4HP3ev-vrj05Vg/
> 
> 
> To which Werner replied to here :)
> https://mailarchive.ietf.org/arch/msg/openpgp/jOHNaaUHs__z7icddEWeNsQCLuQ/ 
> 
>> I can confirm that I have abandoned all OCB patents
>> and placed into the public domain all OCB-related IP of mine.
>> While I have been telling people this for quite some time, I don't
>> think I ever made a proper announcement to the CFRG or on the
>> OCB webpage. Consider that done.
>> 
>> I hope people will use the scheme to do positive things.
>> 
>> phil
> 
> 
> Prior to that statement, Phil provided RNP with an explicit OCB license grant (https://github.com/rnpgp/rnp/blob/master/LICENSE-OCB.md). He was supportive of OCB being used in OpenPGP for free, and therefore made the CFRG announcement. GnuPG’s OCB implementation was also covered by Phil’s grant (compatibility testing was done between RNP and GnuPG).
> 
> Kind regards,
> Ron
> 
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