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Call to signer failed: signing error: openpgp: s2k GNU dummy key: dummy key found #825
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judging by the error, it seems the key is invalid... we do have tests for signing with subkeys... and we haven't changed anything related to crypt lately 🤔 |
Yeah, I am not sure what is going on either. I can verify that the key is not invalid. $ gpg -K
-----------------------------------------
sec ed25519/0x889B19391F774443 2022-11-11 [SC]
Key fingerprint = 78E8 2890 D40D 5D39 7D19 399F 889B 1939 1F77 4443
uid [ultimate] Smallstep Ops <techadmin@smallstep.com>
ssb rsa4096/0x1E43859CB855223C 2022-11-11 [S]
$ gpg --clearsign test.txt
$ cat test.txt.asc
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512
This is a test
-----BEGIN PGP SIGNATURE-----
iQIzBAEBCgAdFiEExj6yRTZfoHtxBoBJHkOFnLhVIjwFAmZ5iOoACgkQHkOFnLhV
IjymCw//WnQHSMijFoVZx3CmpOt+RDn8180Pt0Qa3mWH9DAnV0zPaQJafdQ+Idhk
H736vXsz1O/qmDe3+GqT3RDIAWpBYvLKBjTnq8TNOutBKpyrL1LVCrbvw+Z6F7Kn
dNFA0Ht5HuPJkIW8cq650lNxnJ/9d5DF6d+EMxKr5bcf+J2TlqbM+bmeapszVjmK
+TUR1PpdzeS57AzYFsukYII7QnZRLnhrfy/+pqBhfyfyw/9aT+OBxtZq0ux5Bs59
IkDUlutqilSrw50A63YXv2h30kBNl3EmOHOcyhBfs/PpsKibFltHeCQJhcrbjDeu
ZYrgc1CRPZtcLQOWB97+0tn+PmDvxiFldVBpWq9zXsftZFdFbDq4GbAyBGcSeRMr
oIuZUq5bBf1Zx7hBZF1a8UXP8+70e7HqDuCDPi+If23X3RqO5ofKSmTqzHs0rRhu
KQhIVvcLMQYsjzJSKpA9/qBPntk/kUt0e3Axes7BE2qOai8QpVEY+xGXlRex37P6
xd69C0nKN51y+n2f+hoDw6IFHTuExdG7UZ5eX41qPFFQMnQMaAA1z/RutaQ6qRxD
EZaAa0l/HuaATiW1/EfHQCfV89eigZjkkCPuaTDIBRpAb/SneOWFMxbZUq3UcFOL
tol+eYdxSJ3s7xJygOduo0j84fKSH0qdq32HoB0jreR2xSPa4iM=
=jTFM
-----END PGP SIGNATURE-----
$ gpg --verify test.txt.asc
gpg: Signature made Mon 24 Jun 2024 09:55:38 AM CDT
gpg: using RSA key C63EB245365FA07B710680491E43859CB855223C
gpg: Good signature from "Smallstep Ops <techadmin@smallstep.com>" [ultimate]
Primary key fingerprint: 78E8 2890 D40D 5D39 7D19 399F 889B 1939 1F77 4443
Subkey fingerprint: C63E B245 365F A07B 7106 8049 1E43 859C B855 223C |
Looks like its considering any s2k key as a dummy key: https://github.com/ProtonMail/go-crypto/blob/140b3d6f14775c42f6544e1cc34cf77e3da56baa/openpgp/s2k/s2k.go#L304 From GPG docs:
So, maybe, it just doesn't support smartcards? Found only one issue that seemed somewhat relevant: ProtonMail/go-crypto#199 I do have an yubikey somewhere, will see if I can repro this using the same tutorial and everything, probably someday this week or weekend |
That is really weird. These keys are not in a smart card at all. I just use the tutorial to create the keys that live on disk for now. Maybe that extension was somehow enabled by the gpg.conf provided by the tutorial. |
yeah, really weird indeed |
that said, gpg is generally weird to deal with |
Yeah for sure. I wish we could use cosign for RPMs and Debs but here we are. |
closing as there's nothing to do with this. |
What happened?
We are in the process of creating Apt and RPM repos and I cannot sign Debs and RPMs with a GPG Subkey that is meant for signing only. This seems somewhat related to #276 but it was closed as fixed when nfpm moved to gopenpgp. I see with PR #315 tests were added for signing with sub keys.
How can we reproduce this?
We followed this guide https://github.com/drduh/YubiKey-Guide?tab=readme-ov-file#create-certify-key for creating our GPG Certify key and Signing Subkey.
If I use the Certify key I can sign packages just fine.
nfpm version
I am using nfpm via Goreleaser Pro
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