Trust assignment fails for key with fingerprint ending in multiple zero blocks

[To Damon]

gpg (GnuPG) 2.4.8 still has these issues.


Hi Werner Koch, would you mind taking a look at this issue when you have a moment?


> On 13 Jun 2025, at 22:34, Andrew Gallagher <andrewg at andrewg.com> wrote:
> 
> On 13 Jun 2025, at 15:29, To Damon <damon.tu at outlook.com> wrote:
>> 
>>> gpg --list-secret-keys --with-fingerprint
>> gpg: DBG: Oops: keyid_from_fingerprint: no pubkey; fpr: 51f9e32f62fa6745c5cb09c2412a0000
>> gpg: DBG: Oops: keyid_from_fingerprint: no pubkey; fpr: 577e8f3f61625918c9c53c226b335000
>> gpg: key 0000000000000000 occurs more than once in the trustdb
>> gpg: checking the trustdb
>> gpg: Note: ultimately trusted key 0000000000000000 not found
>> gpg: no ultimately trusted keys found
>> /home/user/.gnupg/pubring.kbx
> 
> This looks like there is a second issue, which is that the trustdb was updated with a null fingerprint or long keyID, twice. Not clear from the outside whether this is a related bug or independent, but it all seems to indicate a baked-in assumption that fingerprints will never have a large number of trailing zeros...
> 
> A
>