Pretty Good Privacy (OpenPGP)

In case you use GnuPG for example, there is a public OpenPGP key associated with the label’s email address so that you can send me encrypted mails or mails with encrypted files attached. The key is available for download and should be imported to GnuPG in order to make it accessible:

$ gpg --import zerocat.pubkey.asc

Note that this webpage could have been manipulated, so please check the downloaded key’s fingerprint with the one that you have received via email, business card or flyer, as soon as possible. If the fingerprints don't match, something weird is going on.

$ gpg --fingerprint zerocat
---------------------------------------------------------------------------------------------
pub   rsa4096/0x9BFA2CB77D3D1A27 2017-11-21 [SC] [expires: 2026-03-30]
      Key fingerprint = D39A EE2E 477C 0492 55F4  E329 9BFA 2CB7 7D3D 1A27
uid                   [ultimate] Zerocat (True Free-Design Hardware Tools) <zerocat@posteo.de>
sub   rsa4096/0x0A816BC8478C6C07 2017-11-21 [E] [expires: 2026-03-30]

Improved Security without SHA1

This key should come without obsolete SHA1 Signatures, and the list of algorithm preferences has been changed such that weak SHA1 Encryption will hopefully be avoided. In case you are updating your old existent zerocat key, we recommend to remove the old key first with $ gpg --delete-key zerocat before importing the new one.

Copy & Paste

Alternatively, you may gather the key by copy&paste and store it under a filename of your choice. Please apply the rules mentioned above as well.

$ cat zerocat.pubkey.asc
---------------------------------------------------------------------------------------------
-----BEGIN PGP PUBLIC KEY BLOCK-----
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=1LSV
-----END PGP PUBLIC KEY BLOCK-----