Cat that kicks an exclamation mark.
Hardware of a Free Design
Transparent. No Tricks. No Compromises.

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: 2027-03-31]
      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: 2027-03-31]

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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=Q4zZ
-----END PGP PUBLIC KEY BLOCK-----