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Re: [openpgp] New fingerprint: to v5 or not to v5

"Mark D. Baushke" <mdb@juniper.net> Mon, 05 October 2015 03:44 UTC

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To: Phillip Hallam-Baker <phill@hallambaker.com>, Watson Ladd <watsonbladd@gmail.com>, IETF OpenPGP <openpgp@ietf.org>, Daniel Kahn Gillmor <dkg@fifthhorseman.net>
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References: <878u84zy4r.fsf@vigenere.g10code.de> <87fv1xxe5w.fsf@alice.fifthhorseman.net> <87r3lgcup8.fsf@vigenere.g10code.de> <CACsn0c=-LKagSqTbgOV1W4Gu4u-f6vpVq82-nWSLGogjoeFKeg@mail.gmail.com> <CAMm+LwjeKDKnN2ZAisbKhWVS4kwCEm_VvcZ1MtftYzEJQpGdhg@mail.gmail.com> <87y4fi5wa9.fsf@vigenere.g10code.de>
Comments: In-reply-to: Werner Koch <wk@gnupg.org> message dated "Sun, 04 Oct 2015 20:22:06 +0200."
From: "Mark D. Baushke" <mdb@juniper.net>
Date: Sun, 04 Oct 2015 20:43:56 -0700
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Archived-At: <http://mailarchive.ietf.org/arch/msg/openpgp/UVpYuT-Sc20qiaSPTexPXkbjTn0>
Subject: Re: [openpgp] New fingerprint: to v5 or not to v5
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> On Sun,  4 Oct 2015 03:50, phill@hallambaker.com said:
...
> See rfc-4880, 12.2 (Key IDs and fingerprints)
...
>     c) timestamp of key creation (4 octets);

This reminds me. I suspect we want to move to be explicit that the
timestamp is unsigned during RFC 4880bis, or we want to allocate
more bits and make it a 64-bit integer (8 octets).

The currnet POSIX-compliant epoch time_t starting at midnight January 1,
1970 using a signed 32-bit integer (4 octets) runs into trouble at 0x80000000 
03:14:08 UTC on 19 January 2038 which might also be read as
20:45:52 UTC on 13 December 1901 (-2147483648).

	-- Mark

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