When encrypting a document with a public key I got a warning:
$gpg --encrypt -r 6B7F10E4 file.pdf It is NOT certain that the key belongs to the person named in the user ID. If you *really* know what you are doing, you may answer the next question with yes. Use this key anyway? (y/N)
I set the trust level to 4 and signed the key:
$ gpg --edit-key 6B7F10E4 gpg> trust Please decide how far you trust this user to correctly verify other users' keys (by looking at passports, checking fingerprints from different sources, etc.) 1 = I don't know or won't say 2 = I do NOT trust 3 = I trust marginally 4 = I trust fully 5 = I trust ultimately m = back to the main menu Your decision? 4 <Enter> gpg> sign Are you sure that you want to sign this key with your key ... (8F3A3A54) Really sign? (y/N) y <Enter> gpg> save
But I still get that warning when encrypting documents with that key. What else do I need to do to remove it?