It can specify either a mathematical structure that provides encryption, decryption, signature and verification, either for large data sets, which contain these structures, as well as information about associated with the key person, additional plug and so on. The word 'key' is, unfortunately, ambiguous. The sender can import it from the key servers for key ID or text. It is possible to send to the server or transport your keys in plaintext to the message sender.

With it you can encrypt a message for the owner of the corresponding private key. Looks something like this: gpg -a -export Public-key to all of this, what side is and how he even looks? Any key or set of keys can be exported to ascii, simply add -a to the export command. I don't know what can be exported from Kleopatra, but. What is the 'certificate' which I can export using Kleopatra into a file with the extension. 8 figures by today's standards is considered small, it is better to use 16.

Fingerprint-it is unique identifier, it is possible to find the public key on the server or to identify it in the gpg command. Key-ID-is the tail of the fingerprint of the key.

Gpgwin cant find public key