On Thu, 25 Jan 2018 05:43, [email protected] said: > After looking at the content of subpacket 33, it appears to be the > signing-key's fingerprint prepended by '0x04'. > > So I'm guessing subpacket 33 is to be a more robust version of subpacket 16 > (Issuer)?
Right. From RFC-4880bis (draft -03)
| 5.2.3.5. {5.2.3.5} Issuer
|
| (8-octet Key ID)
|
| The OpenPGP Key ID of the key issuing the signature. If the version
| of that key is greater than 4, this subpacket MUST NOT be included in
| the signature.
|
|
| 5.2.3.28. Issuer Fingerprint
|
| (1 octet key version number, N octets of fingerprint)
|
| The OpenPGP Key fingerprint of the key issuing the signature. This
| subpacket SHOULD be included in all signatures. If the version of
| the issuing key is 4 and an Issuer subpacket is also included in the
| signature, the key ID of the Issuer subpacket MUST match the low 64
| bits of the fingerprint.
|
| Note that the length N of the fingerprint for a version 4 key is 20
| octets; for a version 5 key N is 32.
Note that the OpenPGP WG page is not anymore updated automatically, thus
you better watch
https://datatracker.ietf.org/doc/draft-ietf-openpgp-rfc4880bis/
for updates. I use
ssh://[email protected]/openpgp-wg/rfc4880bis
to prepare new draft versions. With gpg implementing some propose
changes I guess I should do a -04 soonish. I will report also to
gnupg-devel whne tehre is a new draft.
Shalom-Salam,
Werner
--
Die Gedanken sind frei. Ausnahmen regelt ein Bundesgesetz.
pgpBcAleg6bQ0.pgp
Description: PGP signature
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