From f7464fdd2e33e5dc6c159a4adc8f53902e6d4511 Mon Sep 17 00:00:00 2001 From: Luke Shumaker Date: Wed, 13 Apr 2011 23:20:15 -0400 Subject: Initial commit of Luke Shumaker's "dot-files". --- .emacs.d/org-7.4/lisp/org-crypt.el | 187 +++++++++++++++++++++++++++++++++++++ 1 file changed, 187 insertions(+) create mode 100644 .emacs.d/org-7.4/lisp/org-crypt.el (limited to '.emacs.d/org-7.4/lisp/org-crypt.el') diff --git a/.emacs.d/org-7.4/lisp/org-crypt.el b/.emacs.d/org-7.4/lisp/org-crypt.el new file mode 100644 index 0000000..1d76104 --- /dev/null +++ b/.emacs.d/org-7.4/lisp/org-crypt.el @@ -0,0 +1,187 @@ +;;; org-crypt.el --- Public key encryption for org-mode entries + +;; Copyright (C) 2007, 2009, 2010 Free Software Foundation, Inc. + +;; Emacs Lisp Archive Entry +;; Filename: org-crypt.el +;; Version: 7.4 +;; Keywords: org-mode +;; Author: John Wiegley +;; Maintainer: Peter Jones +;; Description: Adds public key encryption to org-mode buffers +;; URL: http://www.newartisans.com/software/emacs.html +;; Compatibility: Emacs22 + +;; This file is part of GNU Emacs. +;; +;; GNU Emacs is free software: you can redistribute it and/or modify +;; it under the terms of the GNU General Public License as published by +;; the Free Software Foundation, either version 3 of the License, or +;; (at your option) any later version. + +;; GNU Emacs is distributed in the hope that it will be useful, +;; but WITHOUT ANY WARRANTY; without even the implied warranty of +;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +;; GNU General Public License for more details. + +;; You should have received a copy of the GNU General Public License +;; along with GNU Emacs. If not, see . + +;;; Commentary: + +;; Right now this is just a set of functions to play with. It depends +;; on the epg library. Here's how you would use it: +;; +;; 1. To mark an entry for encryption, tag the heading with "crypt". +;; You can change the tag to any complex tag matching string by +;; setting the `org-crypt-tag-matcher' variable. +;; +;; 2. Set the encryption key to use in the `org-crypt-key' variable, +;; or use `M-x org-set-property' to set the property CRYPTKEY to +;; any address in your public keyring. The text of the entry (but +;; not its properties or headline) will be encrypted for this user. +;; For them to read it, the corresponding secret key must be +;; located in the secret key ring of the account where you try to +;; decrypt it. This makes it possible to leave secure notes that +;; only the intended recipient can read in a shared-org-mode-files +;; scenario. +;; If the key is not set, org-crypt will default to symmetric encryption. +;; +;; 3. To later decrypt an entry, use `org-decrypt-entries' or +;; `org-decrypt-entry'. It might be useful to bind this to a key, +;; like C-c C-/. I hope that in the future, C-c C-r can be might +;; overloaded to also decrypt an entry if it's encrypted, since +;; that fits nicely with the meaning of "reveal". +;; +;; 4. To automatically encrypt all necessary entries when saving a +;; file, call `org-crypt-use-before-save-magic' after loading +;; org-crypt.el. +;; +;; TODO: +;; - Allow symmetric encryption as well + +;;; Thanks: + +;; - Carsten Dominik +;; - Vitaly Ostanin + +(require 'org) + +;;; Code: + +(declare-function epg-decrypt-string "epg" (context cipher)) +(declare-function epg-list-keys "epg" (context &optional name mode)) +(declare-function epg-make-context "epg" + (&optional protocol armor textmode include-certs + cipher-algorithm digest-algorithm + compress-algorithm)) +(declare-function epg-encrypt-string "epg" + (context plain recipients &optional sign always-trust)) + +(defgroup org-crypt nil + "Org Crypt" + :tag "Org Crypt" :group 'org) + +(defcustom org-crypt-tag-matcher "crypt" + "The tag matcher used to find headings whose contents should be encrypted. + +See the \"Match syntax\" section of the org manual for more details." + :type 'string :group 'org-crypt) + +(defcustom org-crypt-key nil + "The default key to use when encrypting the contents of a heading. + +This setting can also be overridden in the CRYPTKEY property." + :type 'string :group 'org-crypt) + +(defun org-crypt-key-for-heading () + "Return the encryption key for the current heading." + (save-excursion + (org-back-to-heading t) + (or (org-entry-get nil "CRYPTKEY" 'selective) + org-crypt-key + (and (boundp 'epa-file-encrypt-to) epa-file-encrypt-to) + (message "No crypt key set, using symmetric encryption.")))) + +(defun org-encrypt-entry () + "Encrypt the content of the current headline." + (interactive) + (require 'epg) + (save-excursion + (org-back-to-heading t) + (let ((start-heading (point))) + (forward-line) + (when (not (looking-at "-----BEGIN PGP MESSAGE-----")) + (let ((folded (org-invisible-p)) + (epg-context (epg-make-context nil t t)) + (crypt-key (org-crypt-key-for-heading)) + (beg (point)) + end encrypted-text) + (goto-char start-heading) + (org-end-of-subtree t t) + (org-back-over-empty-lines) + (setq end (point) + encrypted-text + (epg-encrypt-string + epg-context + (buffer-substring-no-properties beg end) + (epg-list-keys epg-context crypt-key))) + (delete-region beg end) + (insert encrypted-text) + (when folded + (goto-char start-heading) + (hide-subtree)) + nil))))) + +(defun org-decrypt-entry () + "Decrypt the content of the current headline." + (interactive) + (require 'epg) + (unless (org-before-first-heading-p) + (save-excursion + (org-back-to-heading t) + (forward-line) + (when (looking-at "-----BEGIN PGP MESSAGE-----") + (let* ((beg (point)) + (end (save-excursion + (search-forward "-----END PGP MESSAGE-----") + (forward-line) + (point))) + (epg-context (epg-make-context nil t t)) + (decrypted-text + (decode-coding-string + (epg-decrypt-string + epg-context + (buffer-substring-no-properties beg end)) + 'utf-8))) + (delete-region beg end) + (insert decrypted-text) + nil))))) + +(defun org-encrypt-entries () + "Encrypt all top-level entries in the current buffer." + (interactive) + (org-scan-tags + 'org-encrypt-entry + (cdr (org-make-tags-matcher org-crypt-tag-matcher)))) + +(defun org-decrypt-entries () + "Decrypt all entries in the current buffer." + (interactive) + (org-scan-tags + 'org-decrypt-entry + (cdr (org-make-tags-matcher org-crypt-tag-matcher)))) + +(defun org-crypt-use-before-save-magic () + "Add a hook to automatically encrypt entries before a file is saved to disk." + (add-hook + 'org-mode-hook + (lambda () (add-hook 'before-save-hook 'org-encrypt-entries nil t)))) + +(add-hook 'org-reveal-start-hook 'org-decrypt-entry) + +(provide 'org-crypt) + +;; arch-tag: 8202ed2c-221e-4001-9e4b-54674a7e846e + +;;; org-crypt.el ends here -- cgit v1.2.3-54-g00ecf