PGP is a time-tested and proven method of protecting email communications with end-to-end encryption (which prevents emails from being read by any third parties, including the email provider). Historically, PGP has been difficult to use, and it was not possible for most users to set up and regularly use PGP.
(IIRC Kleopatra runs on top of GnuPG, so I assume your application does as well. I've been wrong before.) You might notice something out of place with your private (decryption) keys. For example, if the key is listed as either. sec# ssb> Then it's a (primary or sub respectively) key located on a … Gpg4win: Powerful Encryption for Free | PCWorld Dec 05, 2011 GnuPG: Encrypting and signing on the clipboard | Helpdesk Kleopatra decrypts the text and/or checks the signature, verifies that the operation was successful and, in case of decryption, returns the text in unencrypted format to the clipboard. After this you can paste the encrypted text from the clipboard to a desired location or program. NOTE! Kleopatra is very specific regarding signature validity. Basic Guide to PGP On Windows/PC (Kleopatra – Gpg4Win
Oct 30, 2013
Signing and encrypting files on GnuPG or Kleopatra Jun 21, 2018
Digitally Signing and Encrypting Messages | Thunderbird Help
T3388 Kleopatra does not offer ascii armor