1 ;;; epa.el --- the EasyPG Assistant
2 ;; Copyright (C) 2006 Daiki Ueno
4 ;; Author: Daiki Ueno <ueno@unixuser.org>
5 ;; Keywords: PGP, GnuPG
7 ;; This file is part of EasyPG.
9 ;; This program is free software; you can redistribute it and/or modify
10 ;; it under the terms of the GNU General Public License as published by
11 ;; the Free Software Foundation; either version 2, or (at your option)
14 ;; This program is distributed in the hope that it will be useful,
15 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 ;; GNU General Public License for more details.
19 ;; You should have received a copy of the GNU General Public License
20 ;; along with GNU Emacs; see the file COPYING. If not, write to the
21 ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
22 ;; Boston, MA 02110-1301, USA.
29 (eval-when-compile (require 'wid-edit))
33 "The EasyPG Assistant"
36 (defcustom epa-popup-info-window t
37 "If non-nil, status information from epa commands is displayed on
42 (defcustom epa-info-window-height 5
43 "Number of lines used to display status information."
47 (defgroup epa-faces nil
51 (defface epa-validity-high-face
52 '((((class color) (background dark))
53 (:foreground "PaleTurquoise" :bold t))
56 "Face used for displaying the high validity."
58 (defvar epa-validity-high-face 'epa-validity-high-face)
60 (defface epa-validity-medium-face
61 '((((class color) (background dark))
62 (:foreground "PaleTurquoise" :italic t))
65 "Face used for displaying the medium validity."
67 (defvar epa-validity-medium-face 'epa-validity-medium-face)
69 (defface epa-validity-low-face
72 "Face used for displaying the low validity."
74 (defvar epa-validity-low-face 'epa-validity-low-face)
76 (defface epa-validity-disabled-face
78 (:italic t :inverse-video t)))
79 "Face used for displaying the disabled validity."
81 (defvar epa-validity-disabled-face 'epa-validity-disabled-face)
83 (defface epa-string-face
86 (:foreground "lightyellow"))
89 (:foreground "blue4"))
92 "Face used for displaying the string."
94 (defvar epa-string-face 'epa-string-face)
96 (defface epa-mark-face
97 '((((class color) (background dark))
98 (:foreground "orange" :bold t))
100 (:foreground "red" :bold t)))
101 "Face used for displaying the high validity."
103 (defvar epa-mark-face 'epa-mark-face)
105 (defface epa-field-name-face
106 '((((class color) (background dark))
107 (:foreground "PaleTurquoise" :bold t))
109 "Face for the name of the attribute field."
111 (defvar epa-field-name-face 'epa-field-name-face)
113 (defface epa-field-body-face
114 '((((class color) (background dark))
115 (:foreground "turquoise" :italic t))
117 "Face for the body of the attribute field."
119 (defvar epa-field-body-face 'epa-field-body-face)
121 (defcustom epa-validity-face-alist
122 '((unknown . epa-validity-disabled-face)
123 (invalid . epa-validity-disabled-face)
124 (disabled . epa-validity-disabled-face)
125 (revoked . epa-validity-disabled-face)
126 (expired . epa-validity-disabled-face)
127 (none . epa-validity-low-face)
128 (undefined . epa-validity-low-face)
129 (never . epa-validity-low-face)
130 (marginal . epa-validity-medium-face)
131 (full . epa-validity-high-face)
132 (ultimate . epa-validity-high-face))
133 "An alist mapping validity values to faces."
137 (defcustom epa-font-lock-keywords
140 ("^\t\\([^\t:]+:\\)[ \t]*\\(.*\\)$"
141 (1 epa-field-name-face)
142 (2 epa-field-body-face)))
143 "Default expressions to addon in epa-mode."
144 :type '(repeat (list string))
147 (defconst epa-pubkey-algorithm-letter-alist
155 (defvar epa-protocol 'OpenPGP
156 "*The default protocol.
157 The value can be either OpenPGP or CMS.
159 You should bind this variable with `let', but do not set it globally.")
161 (defvar epa-armor nil
162 "*If non-nil, epa commands create ASCII armored output.
164 You should bind this variable with `let', but do not set it globally.")
166 (defvar epa-textmode nil
167 "*If non-nil, epa commands treat input files as text.
169 You should bind this variable with `let', but do not set it globally.")
171 (defvar epa-keys-buffer nil)
172 (defvar epa-key-buffer-alist nil)
174 (defvar epa-list-keys-arguments nil)
175 (defvar epa-info-buffer nil)
176 (defvar epa-last-coding-system-specified nil)
178 (defvar epa-key-list-mode-map
179 (let ((keymap (make-sparse-keymap)))
180 (define-key keymap "m" 'epa-mark)
181 (define-key keymap "u" 'epa-unmark)
182 (define-key keymap "d" 'epa-decrypt-file)
183 (define-key keymap "v" 'epa-verify-file)
184 (define-key keymap "s" 'epa-sign-file)
185 (define-key keymap "e" 'epa-encrypt-file)
186 (define-key keymap "r" 'epa-delete-keys)
187 (define-key keymap "i" 'epa-import-keys)
188 (define-key keymap "o" 'epa-export-keys)
189 (define-key keymap "g" 'revert-buffer)
190 (define-key keymap "n" 'next-line)
191 (define-key keymap "p" 'previous-line)
192 (define-key keymap " " 'scroll-up)
193 (define-key keymap [delete] 'scroll-down)
194 (define-key keymap "q" 'epa-exit-buffer)
197 (defvar epa-key-mode-map
198 (let ((keymap (make-sparse-keymap)))
199 (define-key keymap "q" 'epa-exit-buffer)
202 (defvar epa-info-mode-map
203 (let ((keymap (make-sparse-keymap)))
204 (define-key keymap "q" 'delete-window)
207 (defvar epa-exit-buffer-function #'bury-buffer)
209 (define-widget 'epa-key 'push-button
210 "Button for representing a epg-key object."
212 :button-face-get 'epa--key-widget-button-face-get
213 :value-create 'epa--key-widget-value-create
214 :action 'epa--key-widget-action
215 :help-echo 'epa--key-widget-help-echo)
217 (defun epa--key-widget-action (widget &optional event)
218 (epa--show-key (widget-get widget :value)))
220 (defun epa--key-widget-value-create (widget)
221 (let* ((key (widget-get widget :value))
222 (primary-sub-key (car (epg-key-sub-key-list key)))
223 (primary-user-id (car (epg-key-user-id-list key))))
224 (insert (format "%c "
225 (if (epg-sub-key-validity primary-sub-key)
226 (car (rassq (epg-sub-key-validity primary-sub-key)
227 epg-key-validity-alist))
229 (epg-sub-key-id primary-sub-key)
232 (if (stringp (epg-user-id-string primary-user-id))
233 (epg-user-id-string primary-user-id)
234 (epg-decode-dn (epg-user-id-string primary-user-id)))
237 (defun epa--key-widget-button-face-get (widget)
238 (let ((validity (epg-sub-key-validity (car (epg-key-sub-key-list
239 (widget-get widget :value))))))
241 (cdr (assq validity epa-validity-face-alist))
244 (defun epa--key-widget-help-echo (widget)
246 (epg-sub-key-id (car (epg-key-sub-key-list
247 (widget-get widget :value))))))
249 (if (fboundp 'encode-coding-string)
250 (defalias 'epa--encode-coding-string 'encode-coding-string)
251 (defalias 'epa--encode-coding-string 'identity))
253 (if (fboundp 'decode-coding-string)
254 (defalias 'epa--decode-coding-string 'decode-coding-string)
255 (defalias 'epa--decode-coding-string 'identity))
257 (defun epa-key-list-mode ()
258 "Major mode for `epa-list-keys'."
259 (kill-all-local-variables)
260 (buffer-disable-undo)
261 (setq major-mode 'epa-key-list-mode
265 (use-local-map epa-key-list-mode-map)
266 (make-local-variable 'font-lock-defaults)
267 (setq font-lock-defaults '(epa-font-lock-keywords t))
268 ;; In XEmacs, auto-initialization of font-lock is not effective
269 ;; if buffer-file-name is not set.
270 (font-lock-set-defaults)
271 (make-local-variable 'epa-exit-buffer-function)
272 (make-local-variable 'revert-buffer-function)
273 (setq revert-buffer-function 'epa--key-list-revert-buffer)
274 (run-hooks 'epa-key-list-mode-hook))
276 (defun epa-key-mode ()
277 "Major mode for a key description."
278 (kill-all-local-variables)
279 (buffer-disable-undo)
280 (setq major-mode 'epa-key-mode
284 (use-local-map epa-key-mode-map)
285 (make-local-variable 'font-lock-defaults)
286 (setq font-lock-defaults '(epa-font-lock-keywords t))
287 ;; In XEmacs, auto-initialization of font-lock is not effective
288 ;; if buffer-file-name is not set.
289 (font-lock-set-defaults)
290 (make-local-variable 'epa-exit-buffer-function)
291 (run-hooks 'epa-key-mode-hook))
293 (defun epa-info-mode ()
294 "Major mode for `epa-info-buffer'."
295 (kill-all-local-variables)
296 (buffer-disable-undo)
297 (setq major-mode 'epa-info-mode
301 (use-local-map epa-info-mode-map)
302 (run-hooks 'epa-info-mode-hook))
304 (defun epa-mark (&optional arg)
305 "Mark the current line.
306 If ARG is non-nil, unmark the current line."
308 (let ((inhibit-read-only t)
312 (setq properties (text-properties-at (point)))
314 (insert (if arg " " "*"))
315 (set-text-properties (1- (point)) (point) properties)
318 (defun epa-unmark (&optional arg)
319 "Unmark the current line.
320 If ARG is non-nil, mark the current line."
322 (epa-mark (not arg)))
324 (defun epa-toggle-mark ()
325 "Toggle the mark the current line."
327 (epa-mark (eq (char-after (save-excursion (beginning-of-line) (point))) ?*)))
329 (defun epa-exit-buffer ()
330 "Exit the current buffer.
331 `epa-exit-buffer-function' is called if it is set."
333 (funcall epa-exit-buffer-function))
335 (defun epa--insert-keys (context name mode)
338 (narrow-to-region (point) (point))
339 (let ((keys (epg-list-keys context name mode))
344 (add-text-properties point (point)
345 (list 'epa-key (car keys)
350 (widget-create 'epa-key :value (car keys))
352 (setq keys (cdr keys))))
353 (add-text-properties (point-min) (point-max)
354 (list 'epa-list-keys t
360 (defun epa--list-keys (name secret)
361 (unless (and epa-keys-buffer
362 (buffer-live-p epa-keys-buffer))
363 (setq epa-keys-buffer (generate-new-buffer "*Keys*")))
364 (set-buffer epa-keys-buffer)
366 (let ((inhibit-read-only t)
369 (context (epg-make-context epa-protocol)))
370 (unless (get-text-property point 'epa-list-keys)
371 (setq point (next-single-property-change point 'epa-list-keys)))
374 (or (next-single-property-change point 'epa-list-keys)
377 (epa--insert-keys context name secret)
379 (set-keymap-parent (current-local-map) widget-keymap))
380 (make-local-variable 'epa-list-keys-arguments)
381 (setq epa-list-keys-arguments (list name secret))
382 (goto-char (point-min))
383 (pop-to-buffer (current-buffer)))
386 (defun epa-list-keys (&optional name)
387 "List all keys matched with NAME from the public keyring."
389 (if current-prefix-arg
390 (let ((name (read-string "Pattern: "
391 (if epa-list-keys-arguments
392 (car epa-list-keys-arguments)))))
393 (list (if (equal name "") nil name)))
395 (epa--list-keys name nil))
398 (defun epa-list-secret-keys (&optional name)
399 "List all keys matched with NAME from the private keyring."
401 (if current-prefix-arg
402 (let ((name (read-string "Pattern: "
403 (if epa-list-keys-arguments
404 (car epa-list-keys-arguments)))))
405 (list (if (equal name "") nil name)))
407 (epa--list-keys name t))
409 (defun epa--key-list-revert-buffer (&optional ignore-auto noconfirm)
410 (apply #'epa--list-keys epa-list-keys-arguments))
412 (defun epa--marked-keys ()
414 (set-buffer epa-keys-buffer)
415 (goto-char (point-min))
417 (while (re-search-forward "^\\*" nil t)
418 (if (setq key (get-text-property (match-beginning 0)
420 (setq keys (cons key keys))))
424 (let ((key (get-text-property (point) 'epa-key)))
429 (defun epa-select-keys (context prompt &optional names secret)
430 "Display a user's keyring and ask him to select keys.
431 CONTEXT is an epg-context.
432 PROMPT is a string to prompt with.
433 NAMES is a list of strings to be matched with keys. If it is nil, all
435 If SECRET is non-nil, list secret keys instead of public keys."
437 (unless (and epa-keys-buffer
438 (buffer-live-p epa-keys-buffer))
439 (setq epa-keys-buffer (generate-new-buffer "*Keys*")))
440 (set-buffer epa-keys-buffer)
442 (let ((inhibit-read-only t)
446 (substitute-command-keys "\
447 - `\\[epa-mark]' to mark a key on the line
448 - `\\[epa-unmark]' to unmark a key on the line\n"))
450 :notify (lambda (&rest ignore) (abort-recursive-edit))
452 (substitute-command-keys
453 "Click here or \\[abort-recursive-edit] to cancel")
456 :notify (lambda (&rest ignore) (exit-recursive-edit))
458 (substitute-command-keys
459 "Click here or \\[exit-recursive-edit] to finish")
462 (epa--insert-keys context names secret)
464 (set-keymap-parent (current-local-map) widget-keymap)
465 (setq epa-exit-buffer-function #'abort-recursive-edit)
466 (goto-char (point-min))
467 (pop-to-buffer (current-buffer)))
472 (if (get-buffer-window epa-keys-buffer)
473 (delete-window (get-buffer-window epa-keys-buffer)))
474 (kill-buffer epa-keys-buffer))))
476 (defun epa--format-fingerprint-1 (fingerprint unit-size block-size)
480 (goto-char (point-min))
482 (goto-char (+ (point) unit-size))
484 (setq unit (1+ unit))
485 (insert (if (= (% unit block-size) 0) " " " ")))
488 (defun epa--format-fingerprint (fingerprint)
490 (if (= (length fingerprint) 40)
491 ;; 1234 5678 9ABC DEF0 1234 5678 9ABC DEF0 1234 5678
492 (epa--format-fingerprint-1 fingerprint 4 5)
493 ;; 12 34 56 78 9A BC DE F0 12 34 56 78 9A BC DE F0
494 (epa--format-fingerprint-1 fingerprint 2 8))))
496 (defun epa--show-key (key)
497 (let* ((primary-sub-key (car (epg-key-sub-key-list key)))
498 (entry (assoc (epg-sub-key-id primary-sub-key)
499 epa-key-buffer-alist))
500 (inhibit-read-only t)
504 (setq entry (cons (epg-sub-key-id primary-sub-key) nil)
505 epa-key-buffer-alist (cons entry epa-key-buffer-alist)))
506 (unless (and (cdr entry)
507 (buffer-live-p (cdr entry)))
508 (setcdr entry (generate-new-buffer
509 (format "*Key*%s" (epg-sub-key-id primary-sub-key)))))
510 (set-buffer (cdr entry))
512 (make-local-variable 'epa-key)
515 (setq pointer (epg-key-user-id-list key))
519 (if (epg-user-id-validity (car pointer))
521 (car (rassq (epg-user-id-validity (car pointer))
522 epg-key-validity-alist)))
525 (if (stringp (epg-user-id-string (car pointer)))
526 (epg-user-id-string (car pointer))
527 (epg-decode-dn (epg-user-id-string (car pointer))))
529 (setq pointer (cdr pointer)))
530 (setq pointer (epg-key-sub-key-list key))
533 (if (epg-sub-key-validity (car pointer))
535 (car (rassq (epg-sub-key-validity (car pointer))
536 epg-key-validity-alist)))
539 (epg-sub-key-id (car pointer))
542 (epg-sub-key-length (car pointer)))
544 (cdr (assq (epg-sub-key-algorithm (car pointer))
545 epg-pubkey-algorithm-alist))
547 (format-time-string "%Y-%m-%d"
548 (epg-sub-key-creation-time (car pointer)))
549 (if (epg-sub-key-expiration-time (car pointer))
550 (format "\n\tExpires: %s"
551 (format-time-string "%Y-%m-%d"
552 (epg-sub-key-expiration-time
556 (mapconcat #'symbol-name
557 (epg-sub-key-capability (car pointer))
560 (epa--format-fingerprint (epg-sub-key-fingerprint (car pointer)))
562 (setq pointer (cdr pointer)))
563 (goto-char (point-min))
564 (pop-to-buffer (current-buffer))))
566 (defun epa-display-info (info)
567 (if epa-popup-info-window
568 (save-selected-window
569 (unless (and epa-info-buffer (buffer-live-p epa-info-buffer))
570 (setq epa-info-buffer (generate-new-buffer "*Info*")))
571 (if (get-buffer-window epa-info-buffer)
572 (delete-window (get-buffer-window epa-info-buffer)))
574 (set-buffer epa-info-buffer)
575 (let ((inhibit-read-only t)
580 (goto-char (point-min)))
581 (if (> (window-height)
582 epa-info-window-height)
583 (set-window-buffer (split-window nil (- (window-height)
584 epa-info-window-height))
586 (pop-to-buffer epa-info-buffer)
587 (if (> (window-height) epa-info-window-height)
588 (shrink-window (- (window-height) epa-info-window-height)))))
589 (message "%s" info)))
591 (defun epa-display-verify-result (verify-result)
592 (epa-display-info (epg-verify-result-to-string verify-result)))
593 (make-obsolete 'epa-display-verify-result 'epa-display-info)
595 (defun epa-passphrase-callback-function (context key-id handback)
597 (read-passwd "Passphrase for symmetric encryption: "
598 (eq (epg-context-operation context) 'encrypt))
601 "Passphrase for PIN: "
602 (let ((entry (assoc key-id epg-user-id-alist)))
604 (format "Passphrase for %s %s: " key-id (cdr entry))
605 (format "Passphrase for %s: " key-id)))))))
607 (defun epa-progress-callback-function (context what char current total
609 (message "%s%d%% (%d/%d)" (or handback
611 (if (> total 0) (floor (* (/ current (float total)) 100)) 0)
615 (defun epa-decrypt-file (file)
617 (interactive "fFile: ")
618 (setq file (expand-file-name file))
619 (let* ((default-name (file-name-sans-extension file))
620 (plain (expand-file-name
622 (concat "To file (default "
623 (file-name-nondirectory default-name)
625 (file-name-directory default-name)
627 (context (epg-make-context epa-protocol)))
628 (epg-context-set-passphrase-callback context
629 #'epa-passphrase-callback-function)
630 (epg-context-set-progress-callback context
631 #'epa-progress-callback-function
632 (format "Decrypting %s..."
633 (file-name-nondirectory file)))
634 (message "Decrypting %s..." (file-name-nondirectory file))
635 (epg-decrypt-file context file plain)
636 (message "Decrypting %s...wrote %s" (file-name-nondirectory file)
637 (file-name-nondirectory plain))
638 (if (epg-context-result-for context 'verify)
639 (epa-display-info (epg-verify-result-to-string
640 (epg-context-result-for context 'verify))))))
643 (defun epa-verify-file (file)
645 (interactive "fFile: ")
646 (setq file (expand-file-name file))
647 (let* ((context (epg-make-context epa-protocol))
648 (plain (if (equal (file-name-extension file) "sig")
649 (file-name-sans-extension file))))
650 (epg-context-set-progress-callback context
651 #'epa-progress-callback-function
652 (format "Verifying %s..."
653 (file-name-nondirectory file)))
654 (message "Verifying %s..." (file-name-nondirectory file))
655 (epg-verify-file context file plain)
656 (message "Verifying %s...done" (file-name-nondirectory file))
657 (if (epg-context-result-for context 'verify)
658 (epa-display-info (epg-verify-result-to-string
659 (epg-context-result-for context 'verify))))))
661 (defun epa--read-signature-type ()
664 (message "Signature type (n,c,d,?) ")
669 (setq type 'detached))
671 (with-output-to-temp-buffer "*Help*"
673 (set-buffer standard-output)
675 n - Create a normal signature
676 c - Create a cleartext signature
677 d - Create a detached signature
681 (setq type 'normal))))))
684 (defun epa-sign-file (file signers mode)
685 "Sign FILE by SIGNERS keys selected."
687 (let ((verbose current-prefix-arg))
688 (list (expand-file-name (read-file-name "File: "))
690 (epa-select-keys (epg-make-context epa-protocol)
691 "Select keys for signing.
692 If no one is selected, default secret key is used. "
695 (epa--read-signature-type)
697 (let ((signature (concat file
698 (if (eq epa-protocol 'OpenPGP)
701 '(nil t normal detached))))
703 (if (memq mode '(t detached))
706 (if (memq mode '(t detached))
709 (context (epg-make-context epa-protocol)))
710 (epg-context-set-armor context epa-armor)
711 (epg-context-set-textmode context epa-textmode)
712 (epg-context-set-signers context signers)
713 (epg-context-set-passphrase-callback context
714 #'epa-passphrase-callback-function)
715 (epg-context-set-progress-callback context
716 #'epa-progress-callback-function
717 (format "Signing %s..."
718 (file-name-nondirectory file)))
719 (message "Signing %s..." (file-name-nondirectory file))
720 (epg-sign-file context file signature mode)
721 (message "Signing %s...wrote %s" (file-name-nondirectory file)
722 (file-name-nondirectory signature))))
725 (defun epa-encrypt-file (file recipients)
726 "Encrypt FILE for RECIPIENTS."
728 (list (expand-file-name (read-file-name "File: "))
729 (epa-select-keys (epg-make-context epa-protocol)
730 "Select recipients for encryption.
731 If no one is selected, symmetric encryption will be performed. ")))
732 (let ((cipher (concat file (if (eq epa-protocol 'OpenPGP)
733 (if epa-armor ".asc" ".gpg")
735 (context (epg-make-context epa-protocol)))
736 (epg-context-set-armor context epa-armor)
737 (epg-context-set-textmode context epa-textmode)
738 (epg-context-set-passphrase-callback context
739 #'epa-passphrase-callback-function)
740 (epg-context-set-progress-callback context
741 #'epa-progress-callback-function
742 (format "Encrypting %s..."
743 (file-name-nondirectory file)))
744 (message "Encrypting %s..." (file-name-nondirectory file))
745 (epg-encrypt-file context file recipients cipher)
746 (message "Encrypting %s...wrote %s" (file-name-nondirectory file)
747 (file-name-nondirectory cipher))))
750 (defun epa-decrypt-region (start end)
751 "Decrypt the current region between START and END.
753 Don't use this command in Lisp programs!"
756 (let ((context (epg-make-context epa-protocol))
758 (epg-context-set-passphrase-callback context
759 #'epa-passphrase-callback-function)
760 (epg-context-set-progress-callback context
761 #'epa-progress-callback-function
763 (message "Decrypting...")
764 (setq plain (epg-decrypt-string context (buffer-substring start end)))
765 (message "Decrypting...done")
766 (setq plain (epa--decode-coding-string
768 (or coding-system-for-read
769 (get-text-property start 'epa-coding-system-used))))
770 (if (y-or-n-p "Replace the original text? ")
771 (let ((inhibit-read-only t)
773 (delete-region start end)
776 (with-output-to-temp-buffer "*Temp*"
777 (set-buffer standard-output)
780 (if (epg-context-result-for context 'verify)
781 (epa-display-info (epg-verify-result-to-string
782 (epg-context-result-for context 'verify)))))))
784 (defun epa--find-coding-system-for-mime-charset (mime-charset)
785 (if (featurep 'xemacs)
786 (if (fboundp 'find-coding-system)
787 (find-coding-system mime-charset))
788 (let ((pointer (coding-system-list)))
790 (eq (coding-system-get (car pointer) 'mime-charset)
792 (setq pointer (cdr pointer)))
796 (defun epa-decrypt-armor-in-region (start end)
797 "Decrypt OpenPGP armors in the current region between START and END.
799 Don't use this command in Lisp programs!"
803 (narrow-to-region start end)
805 (let (armor-start armor-end)
806 (while (re-search-forward "-----BEGIN PGP MESSAGE-----$" nil t)
807 (setq armor-start (match-beginning 0)
808 armor-end (re-search-forward "^-----END PGP MESSAGE-----$"
811 (error "No armor tail"))
812 (goto-char armor-start)
813 (let ((coding-system-for-read
814 (or coding-system-for-read
815 (if (re-search-forward "^Charset: \\(.*\\)" armor-end t)
816 (epa--find-coding-system-for-mime-charset
817 (intern (downcase (match-string 1))))))))
818 (goto-char armor-end)
819 (epa-decrypt-region armor-start armor-end)))))))
822 (defun epa-verify-region (start end)
823 "Verify the current region between START and END.
825 Don't use this command in Lisp programs!"
827 (let ((context (epg-make-context epa-protocol))
829 (epg-context-set-progress-callback context
830 #'epa-progress-callback-function
832 (setq plain (epg-verify-string
834 (epa--encode-coding-string
835 (buffer-substring start end)
836 (or coding-system-for-write
837 (get-text-property start
838 'epa-coding-system-used)))))
839 (if (y-or-n-p "Replace the original text? ")
840 (let ((inhibit-read-only t)
842 (delete-region start end)
845 (with-output-to-temp-buffer "*Temp*"
846 (set-buffer standard-output)
849 (if (epg-context-result-for context 'verify)
850 (epa-display-info (epg-verify-result-to-string
851 (epg-context-result-for context 'verify))))))
854 (defun epa-verify-cleartext-in-region (start end)
855 "Verify OpenPGP cleartext signed messages in the current region
856 between START and END.
858 Don't use this command in Lisp programs!"
862 (narrow-to-region start end)
864 (let (cleartext-start cleartext-end)
865 (while (re-search-forward "-----BEGIN PGP SIGNED MESSAGE-----$"
867 (setq cleartext-start (match-beginning 0))
868 (unless (re-search-forward "^-----BEGIN PGP SIGNATURE-----$"
870 (error "Invalid cleartext signed message"))
871 (setq cleartext-end (re-search-forward
872 "^-----END PGP SIGNATURE-----$"
874 (unless cleartext-end
875 (error "No cleartext tail"))
876 (epa-verify-region cleartext-start cleartext-end))))))
878 (if (fboundp 'select-safe-coding-system)
879 (defalias 'epa--select-safe-coding-system 'select-safe-coding-system)
880 (defun epa--select-safe-coding-system (from to)
881 buffer-file-coding-system))
884 (defun epa-sign-region (start end signers mode)
885 "Sign the current region between START and END by SIGNERS keys selected.
887 Don't use this command in Lisp programs!"
889 (let ((verbose current-prefix-arg))
890 (setq epa-last-coding-system-specified
891 (or coding-system-for-write
892 (epa--select-safe-coding-system
893 (region-beginning) (region-end))))
894 (list (region-beginning) (region-end)
896 (epa-select-keys (epg-make-context epa-protocol)
897 "Select keys for signing.
898 If no one is selected, default secret key is used. "
901 (epa--read-signature-type)
904 (let ((context (epg-make-context epa-protocol))
906 ;;(epg-context-set-armor context epa-armor)
907 (epg-context-set-armor context t)
908 ;;(epg-context-set-textmode context epa-textmode)
909 (epg-context-set-textmode context t)
910 (epg-context-set-signers context signers)
911 (epg-context-set-passphrase-callback context
912 #'epa-passphrase-callback-function)
913 (epg-context-set-progress-callback context
914 #'epa-progress-callback-function
916 (message "Signing...")
917 (setq signature (epg-sign-string context
918 (epa--encode-coding-string
919 (buffer-substring start end)
920 epa-last-coding-system-specified)
922 (message "Signing...done")
923 (delete-region start end)
925 (add-text-properties (point)
927 (insert (epa--decode-coding-string
929 (or coding-system-for-read
930 epa-last-coding-system-specified)))
932 (list 'epa-coding-system-used
933 epa-last-coding-system-specified
939 (if (fboundp 'derived-mode-p)
940 (defalias 'epa--derived-mode-p 'derived-mode-p)
941 (defun epa--derived-mode-p (&rest modes)
942 "Non-nil if the current major mode is derived from one of MODES.
943 Uses the `derived-mode-parent' property of the symbol to trace backwards."
944 (let ((parent major-mode))
945 (while (and (not (memq parent modes))
946 (setq parent (get parent 'derived-mode-parent))))
950 (defun epa-encrypt-region (start end recipients sign signers)
951 "Encrypt the current region between START and END for RECIPIENTS.
953 Don't use this command in Lisp programs!"
955 (let ((verbose current-prefix-arg)
956 (context (epg-make-context epa-protocol))
958 (setq epa-last-coding-system-specified
959 (or coding-system-for-write
960 (epa--select-safe-coding-system
961 (region-beginning) (region-end))))
962 (list (region-beginning) (region-end)
963 (epa-select-keys context
964 "Select recipients for encryption.
965 If no one is selected, symmetric encryption will be performed. ")
966 (setq sign (if verbose (y-or-n-p "Sign? ")))
968 (epa-select-keys context
969 "Select keys for signing. ")))))
971 (let ((context (epg-make-context epa-protocol))
973 ;;(epg-context-set-armor context epa-armor)
974 (epg-context-set-armor context t)
975 ;;(epg-context-set-textmode context epa-textmode)
976 (epg-context-set-textmode context t)
978 (epg-context-set-signers context signers))
979 (epg-context-set-passphrase-callback context
980 #'epa-passphrase-callback-function)
981 (epg-context-set-progress-callback context
982 #'epa-progress-callback-function
984 (message "Encrypting...")
985 (setq cipher (epg-encrypt-string context
986 (epa--encode-coding-string
987 (buffer-substring start end)
988 epa-last-coding-system-specified)
991 (message "Encrypting...done")
992 (delete-region start end)
994 (add-text-properties (point)
998 (list 'epa-coding-system-used
999 epa-last-coding-system-specified
1006 (defun epa-delete-keys (keys &optional allow-secret)
1007 "Delete selected KEYS.
1009 Don't use this command in Lisp programs!"
1011 (let ((keys (epa--marked-keys)))
1013 (error "No keys selected"))
1015 (eq (nth 1 epa-list-keys-arguments) t))))
1016 (let ((context (epg-make-context epa-protocol)))
1017 (message "Deleting...")
1018 (epg-delete-keys context keys allow-secret)
1019 (message "Deleting...done")
1020 (apply #'epa-list-keys epa-list-keys-arguments)))
1023 (defun epa-import-keys (file)
1024 "Import keys from FILE.
1026 Don't use this command in Lisp programs!"
1027 (interactive "fFile: ")
1028 (setq file (expand-file-name file))
1029 (let ((context (epg-make-context epa-protocol)))
1030 (message "Importing %s..." (file-name-nondirectory file))
1033 (epg-import-keys-from-file context file)
1034 (message "Importing %s...done" (file-name-nondirectory file)))
1036 (message "Importing %s...failed" (file-name-nondirectory file))))
1037 (if (epg-context-result-for context 'import)
1038 (epa-display-info (epg-import-result-to-string
1039 (epg-context-result-for context 'import))))
1040 (if (eq major-mode 'epa-key-list-mode)
1041 (apply #'epa-list-keys epa-list-keys-arguments))))
1044 (defun epa-import-keys-region (start end)
1045 "Import keys from the region.
1047 Don't use this command in Lisp programs!"
1049 (let ((context (epg-make-context epa-protocol)))
1050 (message "Importing...")
1053 (epg-import-keys-from-string context (buffer-substring start end))
1054 (message "Importing...done"))
1056 (message "Importing...failed")))
1057 (if (epg-context-result-for context 'import)
1058 (epa-display-info (epg-import-result-to-string
1059 (epg-context-result-for context 'import))))))
1062 (defun epa-import-armor-in-region (start end)
1063 "Import keys in the OpenPGP armor format in the current region
1064 between START and END.
1066 Don't use this command in Lisp programs!"
1070 (narrow-to-region start end)
1072 (let (armor-start armor-end)
1073 (while (re-search-forward
1074 "-----BEGIN \\(PGP \\(PUBLIC\\|PRIVATE\\) KEY BLOCK\\)-----$"
1076 (setq armor-start (match-beginning 0)
1077 armor-end (re-search-forward
1078 (concat "^-----END " (match-string 1) "-----$")
1081 (error "No armor tail"))
1082 (epa-import-keys-region armor-start armor-end))))))
1085 (defun epa-export-keys (keys file)
1086 "Export selected KEYS to FILE.
1088 Don't use this command in Lisp programs!"
1090 (let ((keys (epa--marked-keys))
1093 (error "No keys selected"))
1096 (concat (epg-sub-key-id (car (epg-key-sub-key-list (car keys))))
1097 (if epa-armor ".asc" ".gpg"))
1102 (concat "To file (default "
1103 (file-name-nondirectory default-name)
1105 (file-name-directory default-name)
1107 (let ((context (epg-make-context epa-protocol)))
1108 (epg-context-set-armor context epa-armor)
1109 (message "Exporting to %s..." (file-name-nondirectory file))
1110 (epg-export-keys-to-file context keys file)
1111 (message "Exporting to %s...done" (file-name-nondirectory file))))
1114 (defun epa-insert-keys (keys)
1115 "Insert selected KEYS after the point.
1117 Don't use this command in Lisp programs!"
1119 (list (epa-select-keys (epg-make-context epa-protocol)
1120 "Select keys to export. ")))
1121 (let ((context (epg-make-context epa-protocol)))
1122 ;;(epg-context-set-armor context epa-armor)
1123 (epg-context-set-armor context t)
1124 (insert (epg-export-keys-to-string context keys))))
1127 (defun epa-sign-keys (keys &optional local)
1128 "Sign selected KEYS.
1129 If a prefix-arg is specified, the signature is marked as non exportable.
1131 Don't use this command in Lisp programs!"
1133 (let ((keys (epa--marked-keys)))
1135 (error "No keys selected"))
1136 (list keys current-prefix-arg)))
1137 (let ((context (epg-make-context epa-protocol)))
1138 (epg-context-set-passphrase-callback context
1139 #'epa-passphrase-callback-function)
1140 (epg-context-set-progress-callback context
1141 #'epa-progress-callback-function
1143 (message "Signing keys...")
1144 (epg-sign-keys context keys local)
1145 (message "Signing keys...done")))
1146 (make-obsolete 'epa-sign-keys "Do not use.")
1150 ;;; epa.el ends here