QUICK INFO:

• Asymmetric encryption: key pair (Private, Public); the recipient sends his Public key to the sender

• To encrypt a file: "Kleopatra > Sign/Encrypt" > choose file to be encrypted > tick "Sign" (if you want to sign) and select private key you want to use for signature > tick "Encrypt for me" (if you want to be able to decrypt the encrypted text) and select your Public key > tick "Encrypt for others" (if  you want others to be able to decrypt the encrypted text) and select  (or import) their Public key > select where to save the file >  "Sign/Encrypt"

• To decrypt a file: "Kleopatra" > "Decrypt/Verify" > select file to be decrypted > "Open"