@greyor
What are you talking about is EFail exploit that is used in e-mail clients to get decrypted version of text, what is EFail you can read here: https://efail.de/
That problem was patched approx a year ago, source:
https://www.eff.org/deeplinks/2018/05/how-turn-pgp-back-safely-possible
VeraCrypt doesn't solve problem for me since its used for encryption of whole drives (which are on your computer or they are portable hdd), I'm talking about encrypting text file and putting it somewhere not so secure, like internet.