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soaringowl2145

Member

Registered: 2016-12-17

Posts: 49

[SOLVED] Is this the correct signing key?

gpg --verify archlinux-2017.07.01-x86_64.iso.sig
gpg: assuming signed data in 'archlinux-2017.07.01-x86_64.iso'
gpg: Signature made Sat Jul  1 03:19:25 2017 EDT
gpg:                using RSA key 4AA4767BBC9C4B1D18AE28B77F2D434B9741E8AC
gpg: Can't check signature: No public key

I am curious about the key that it says it was signed with.  On Debian it says the signing key is: 4AA4767BBC9C4B1D18AE28B77F2D434B9741E8AC

But on KNOPPIX it says: 9741E8AC

So, is the key 4AA4767BBC9C4B1D18AE28B77F2D434B9741E8AC fine?

Last edited by soaringowl2145 (2017-07-25 22:02:27)

Xyne

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Registered: 2008-08-03

Posts: 6,965

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Re: [SOLVED] Is this the correct signing key?

On Debian it says the signing key is: 4AA4767BBC9C4B1D18AE28B77F2D434B9741E8AC
But on KNOPPIX it says:                                               9741E8AC

So, is the key 4AA4767BBC9C4B1D18AE28B77F2D434B9741E8AC fine?

Yep, that's Pierre's key. The full fingerprint is usually used as an ID but sometimes only the last 8 digits are used instead.

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soaringowl2145

Member

Registered: 2016-12-17

Posts: 49

Re: [SOLVED] Is this the correct signing key?

Thank you!

mpan

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Registered: 2012-08-01

Posts: 1,509

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Re: [SOLVED] Is this the correct signing key?

A side note: you should not use only the last 32 bits (8 hexadecimal digits) for working with keys. Use either the full fingerprints or at least the 64-bit IDs.

32-bit ones are effectively dead, with collisions obtainable within dozens of seconds and fake keys of Linux devs already found in the wild. All up-to-date software should have dropped the 32-bit IDs, so on Arch Linux the issue is usually solved, but if you use other operating systems with outdated programs, you should be aware of the problem.

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eschwartz

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Registered: 2014-08-08

Posts: 4,097

Re: [SOLVED] Is this the correct signing key?

Yeah, you'll probably want to make sure your gpg binary uses --with-fingerprint --keyid-format long by default (e.g. set these options in your ~/.gnupg/gpg.conf).

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