I keep project info in .org file together with passwords.

When I share a screen it is annoying to show passwords in a buffer accidentally.

I want to keep .org file in plain text format but mark some parts to be obfuscated or hidden or encrypted:

This is a normal text.
user: me
password: MAGIC{XXXX}

I want to be able to copy content marked as MAGIC as a plain text without a prompt for the decryption master password.

UPDATE I saw http://doc.norang.ca/org-mode.html#HandlingEncryption It encrypts entire section of org file and displays it in plain when prompted.

Displaying of passwords is dangerous. I want to hide them visually and without any manual instructions.


Partial solution that hides passwords, but does not enctrypt:

(defvar mypasshide-prefix-re "^pass: *")

(defun mypasshide--toggle-display (overlay hide)
  "Hide or reveal region. Signature follows convention for
`reveal-toggle-invisible' from `reveal' mode."
  (if hide
      (overlay-put overlay 'display (propertize "****" 'face 'warning))
    (overlay-put overlay 'display nil)))

(defun mypasshide--hide ()
    (goto-char (point-min))
    (while (re-search-forward mypasshide-prefix-re nil t)
      (let* ((beg (match-end 0))
            (end (line-end-position))
            (overlay (make-overlay beg end)))
        (mypasshide--toggle-display overlay t)
        (overlay-put overlay 'reveal-toggle-invisible #'mypasshide--toggle-display)

(define-minor-mode mypasshide-mode
  "Hide passwords after `mypasshide-prefix-re' and activate
`reveal-mode'. Disabling is not implemented."
  :group 'reveal
  (if mypasshide-mode

(provide 'mypasshide)

I activated it as (add-hook 'org-mode-hook #'mypasshide-mode).

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