Pretty sure I had a TSR[1] that did this in reverse (going from cleartext to ciphertext).<p>But props to the author for implementing this and putting the code up.<p>1. <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Terminate_and_stay_resident_program" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Terminate_and_stay_resident_pr...</a>