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 (keys)
338 (narrow-to-region (point) (point))
343 (add-text-properties point (point)
344 (list 'epa-key (car keys)
349 (widget-create 'epa-key :value (car keys))
351 (setq keys (cdr keys))))
352 (add-text-properties (point-min) (point-max)
353 (list 'epa-list-keys t
359 (defun epa--list-keys (name secret)
360 (unless (and epa-keys-buffer
361 (buffer-live-p epa-keys-buffer))
362 (setq epa-keys-buffer (generate-new-buffer "*Keys*")))
363 (set-buffer epa-keys-buffer)
365 (let ((inhibit-read-only t)
368 (context (epg-make-context epa-protocol)))
369 (unless (get-text-property point 'epa-list-keys)
370 (setq point (next-single-property-change point 'epa-list-keys)))
373 (or (next-single-property-change point 'epa-list-keys)
376 (epa--insert-keys (epg-list-keys context name secret))
378 (set-keymap-parent (current-local-map) widget-keymap))
379 (make-local-variable 'epa-list-keys-arguments)
380 (setq epa-list-keys-arguments (list name secret))
381 (goto-char (point-min))
382 (pop-to-buffer (current-buffer)))
385 (defun epa-list-keys (&optional name)
386 "List all keys matched with NAME from the public keyring."
388 (if current-prefix-arg
389 (let ((name (read-string "Pattern: "
390 (if epa-list-keys-arguments
391 (car epa-list-keys-arguments)))))
392 (list (if (equal name "") nil name)))
394 (epa--list-keys name nil))
397 (defun epa-list-secret-keys (&optional name)
398 "List all keys matched with NAME from the private keyring."
400 (if current-prefix-arg
401 (let ((name (read-string "Pattern: "
402 (if epa-list-keys-arguments
403 (car epa-list-keys-arguments)))))
404 (list (if (equal name "") nil name)))
406 (epa--list-keys name t))
408 (defun epa--key-list-revert-buffer (&optional ignore-auto noconfirm)
409 (apply #'epa--list-keys epa-list-keys-arguments))
411 (defun epa--marked-keys ()
413 (set-buffer epa-keys-buffer)
414 (goto-char (point-min))
416 (while (re-search-forward "^\\*" nil t)
417 (if (setq key (get-text-property (match-beginning 0)
419 (setq keys (cons key keys))))
423 (let ((key (get-text-property (point) 'epa-key)))
428 (defun epa-select-keys (context prompt &optional names secret)
429 "Display a user's keyring and ask him to select keys.
430 CONTEXT is an epg-context.
431 PROMPT is a string to prompt with.
432 NAMES is a list of strings to be matched with keys. If it is nil, all
434 If SECRET is non-nil, list secret keys instead of public keys."
436 (unless (and epa-keys-buffer
437 (buffer-live-p epa-keys-buffer))
438 (setq epa-keys-buffer (generate-new-buffer "*Keys*")))
439 (set-buffer epa-keys-buffer)
441 (let ((inhibit-read-only t)
445 (substitute-command-keys "\
446 - `\\[epa-mark]' to mark a key on the line
447 - `\\[epa-unmark]' to unmark a key on the line\n"))
449 :notify (lambda (&rest ignore) (abort-recursive-edit))
451 (substitute-command-keys
452 "Click here or \\[abort-recursive-edit] to cancel")
455 :notify (lambda (&rest ignore) (exit-recursive-edit))
457 (substitute-command-keys
458 "Click here or \\[exit-recursive-edit] to finish")
461 (epa--insert-keys (epg-list-keys context name mode))
463 (set-keymap-parent (current-local-map) widget-keymap)
464 (setq epa-exit-buffer-function #'abort-recursive-edit)
465 (goto-char (point-min))
466 (pop-to-buffer (current-buffer)))
471 (if (get-buffer-window epa-keys-buffer)
472 (delete-window (get-buffer-window epa-keys-buffer)))
473 (kill-buffer epa-keys-buffer))))
475 (defun epa--format-fingerprint-1 (fingerprint unit-size block-size)
479 (goto-char (point-min))
481 (goto-char (+ (point) unit-size))
483 (setq unit (1+ unit))
484 (insert (if (= (% unit block-size) 0) " " " ")))
487 (defun epa--format-fingerprint (fingerprint)
489 (if (= (length fingerprint) 40)
490 ;; 1234 5678 9ABC DEF0 1234 5678 9ABC DEF0 1234 5678
491 (epa--format-fingerprint-1 fingerprint 4 5)
492 ;; 12 34 56 78 9A BC DE F0 12 34 56 78 9A BC DE F0
493 (epa--format-fingerprint-1 fingerprint 2 8))))
495 (defun epa--show-key (key)
496 (let* ((primary-sub-key (car (epg-key-sub-key-list key)))
497 (entry (assoc (epg-sub-key-id primary-sub-key)
498 epa-key-buffer-alist))
499 (inhibit-read-only t)
503 (setq entry (cons (epg-sub-key-id primary-sub-key) nil)
504 epa-key-buffer-alist (cons entry epa-key-buffer-alist)))
505 (unless (and (cdr entry)
506 (buffer-live-p (cdr entry)))
507 (setcdr entry (generate-new-buffer
508 (format "*Key*%s" (epg-sub-key-id primary-sub-key)))))
509 (set-buffer (cdr entry))
511 (make-local-variable 'epa-key)
514 (setq pointer (epg-key-user-id-list key))
518 (if (epg-user-id-validity (car pointer))
520 (car (rassq (epg-user-id-validity (car pointer))
521 epg-key-validity-alist)))
524 (if (stringp (epg-user-id-string (car pointer)))
525 (epg-user-id-string (car pointer))
526 (epg-decode-dn (epg-user-id-string (car pointer))))
528 (setq pointer (cdr pointer)))
529 (setq pointer (epg-key-sub-key-list key))
532 (if (epg-sub-key-validity (car pointer))
534 (car (rassq (epg-sub-key-validity (car pointer))
535 epg-key-validity-alist)))
538 (epg-sub-key-id (car pointer))
541 (epg-sub-key-length (car pointer)))
543 (cdr (assq (epg-sub-key-algorithm (car pointer))
544 epg-pubkey-algorithm-alist))
546 (format-time-string "%Y-%m-%d"
547 (epg-sub-key-creation-time (car pointer)))
548 (if (epg-sub-key-expiration-time (car pointer))
549 (format "\n\tExpires: %s"
550 (format-time-string "%Y-%m-%d"
551 (epg-sub-key-expiration-time
555 (mapconcat #'symbol-name
556 (epg-sub-key-capability (car pointer))
559 (epa--format-fingerprint (epg-sub-key-fingerprint (car pointer)))
561 (setq pointer (cdr pointer)))
562 (goto-char (point-min))
563 (pop-to-buffer (current-buffer))))
565 (defun epa-display-info (info)
566 (if epa-popup-info-window
567 (save-selected-window
568 (unless (and epa-info-buffer (buffer-live-p epa-info-buffer))
569 (setq epa-info-buffer (generate-new-buffer "*Info*")))
570 (if (get-buffer-window epa-info-buffer)
571 (delete-window (get-buffer-window epa-info-buffer)))
573 (set-buffer epa-info-buffer)
574 (let ((inhibit-read-only t)
579 (goto-char (point-min)))
580 (if (> (window-height)
581 epa-info-window-height)
582 (set-window-buffer (split-window nil (- (window-height)
583 epa-info-window-height))
585 (pop-to-buffer epa-info-buffer)
586 (if (> (window-height) epa-info-window-height)
587 (shrink-window (- (window-height) epa-info-window-height)))))
588 (message "%s" info)))
590 (defun epa-display-verify-result (verify-result)
591 (epa-display-info (epg-verify-result-to-string verify-result)))
592 (make-obsolete 'epa-display-verify-result 'epa-display-info)
594 (defun epa-passphrase-callback-function (context key-id handback)
596 (read-passwd "Passphrase for symmetric encryption: "
597 (eq (epg-context-operation context) 'encrypt))
600 "Passphrase for PIN: "
601 (let ((entry (assoc key-id epg-user-id-alist)))
603 (format "Passphrase for %s %s: " key-id (cdr entry))
604 (format "Passphrase for %s: " key-id)))))))
606 (defun epa-progress-callback-function (context what char current total
608 (message "%s%d%% (%d/%d)" (or handback
610 (if (> total 0) (floor (* (/ current (float total)) 100)) 0)
614 (defun epa-decrypt-file (file)
616 (interactive "fFile: ")
617 (setq file (expand-file-name file))
618 (let* ((default-name (file-name-sans-extension file))
619 (plain (expand-file-name
621 (concat "To file (default "
622 (file-name-nondirectory default-name)
624 (file-name-directory default-name)
626 (context (epg-make-context epa-protocol)))
627 (epg-context-set-passphrase-callback context
628 #'epa-passphrase-callback-function)
629 (epg-context-set-progress-callback context
630 #'epa-progress-callback-function
631 (format "Decrypting %s..."
632 (file-name-nondirectory file)))
633 (message "Decrypting %s..." (file-name-nondirectory file))
634 (epg-decrypt-file context file plain)
635 (message "Decrypting %s...wrote %s" (file-name-nondirectory file)
636 (file-name-nondirectory plain))
637 (if (epg-context-result-for context 'verify)
638 (epa-display-info (epg-verify-result-to-string
639 (epg-context-result-for context 'verify))))))
642 (defun epa-verify-file (file)
644 (interactive "fFile: ")
645 (setq file (expand-file-name file))
646 (let* ((context (epg-make-context epa-protocol))
647 (plain (if (equal (file-name-extension file) "sig")
648 (file-name-sans-extension file))))
649 (epg-context-set-progress-callback context
650 #'epa-progress-callback-function
651 (format "Verifying %s..."
652 (file-name-nondirectory file)))
653 (message "Verifying %s..." (file-name-nondirectory file))
654 (epg-verify-file context file plain)
655 (message "Verifying %s...done" (file-name-nondirectory file))
656 (if (epg-context-result-for context 'verify)
657 (epa-display-info (epg-verify-result-to-string
658 (epg-context-result-for context 'verify))))))
660 (defun epa--read-signature-type ()
663 (message "Signature type (n,c,d,?) ")
668 (setq type 'detached))
670 (with-output-to-temp-buffer "*Help*"
672 (set-buffer standard-output)
674 n - Create a normal signature
675 c - Create a cleartext signature
676 d - Create a detached signature
680 (setq type 'normal))))))
683 (defun epa-sign-file (file signers mode)
684 "Sign FILE by SIGNERS keys selected."
686 (let ((verbose current-prefix-arg))
687 (list (expand-file-name (read-file-name "File: "))
689 (epa-select-keys (epg-make-context epa-protocol)
690 "Select keys for signing.
691 If no one is selected, default secret key is used. "
694 (epa--read-signature-type)
696 (let ((signature (concat file
697 (if (eq epa-protocol 'OpenPGP)
700 '(nil t normal detached))))
702 (if (memq mode '(t detached))
705 (if (memq mode '(t detached))
708 (context (epg-make-context epa-protocol)))
709 (epg-context-set-armor context epa-armor)
710 (epg-context-set-textmode context epa-textmode)
711 (epg-context-set-signers context signers)
712 (epg-context-set-passphrase-callback context
713 #'epa-passphrase-callback-function)
714 (epg-context-set-progress-callback context
715 #'epa-progress-callback-function
716 (format "Signing %s..."
717 (file-name-nondirectory file)))
718 (message "Signing %s..." (file-name-nondirectory file))
719 (epg-sign-file context file signature mode)
720 (message "Signing %s...wrote %s" (file-name-nondirectory file)
721 (file-name-nondirectory signature))))
724 (defun epa-encrypt-file (file recipients)
725 "Encrypt FILE for RECIPIENTS."
727 (list (expand-file-name (read-file-name "File: "))
728 (epa-select-keys (epg-make-context epa-protocol)
729 "Select recipients for encryption.
730 If no one is selected, symmetric encryption will be performed. ")))
731 (let ((cipher (concat file (if (eq epa-protocol 'OpenPGP)
732 (if epa-armor ".asc" ".gpg")
734 (context (epg-make-context epa-protocol)))
735 (epg-context-set-armor context epa-armor)
736 (epg-context-set-textmode context epa-textmode)
737 (epg-context-set-passphrase-callback context
738 #'epa-passphrase-callback-function)
739 (epg-context-set-progress-callback context
740 #'epa-progress-callback-function
741 (format "Encrypting %s..."
742 (file-name-nondirectory file)))
743 (message "Encrypting %s..." (file-name-nondirectory file))
744 (epg-encrypt-file context file recipients cipher)
745 (message "Encrypting %s...wrote %s" (file-name-nondirectory file)
746 (file-name-nondirectory cipher))))
749 (defun epa-decrypt-region (start end)
750 "Decrypt the current region between START and END.
752 Don't use this command in Lisp programs!"
755 (let ((context (epg-make-context epa-protocol))
757 (epg-context-set-passphrase-callback context
758 #'epa-passphrase-callback-function)
759 (epg-context-set-progress-callback context
760 #'epa-progress-callback-function
762 (message "Decrypting...")
763 (setq plain (epg-decrypt-string context (buffer-substring start end)))
764 (message "Decrypting...done")
765 (setq plain (epa--decode-coding-string
767 (or coding-system-for-read
768 (get-text-property start 'epa-coding-system-used))))
769 (if (y-or-n-p "Replace the original text? ")
770 (let ((inhibit-read-only t)
772 (delete-region start end)
775 (with-output-to-temp-buffer "*Temp*"
776 (set-buffer standard-output)
779 (if (epg-context-result-for context 'verify)
780 (epa-display-info (epg-verify-result-to-string
781 (epg-context-result-for context 'verify)))))))
783 (defun epa--find-coding-system-for-mime-charset (mime-charset)
784 (if (featurep 'xemacs)
785 (if (fboundp 'find-coding-system)
786 (find-coding-system mime-charset))
787 (let ((pointer (coding-system-list)))
789 (eq (coding-system-get (car pointer) 'mime-charset)
791 (setq pointer (cdr pointer)))
795 (defun epa-decrypt-armor-in-region (start end)
796 "Decrypt OpenPGP armors in the current region between START and END.
798 Don't use this command in Lisp programs!"
802 (narrow-to-region start end)
804 (let (armor-start armor-end)
805 (while (re-search-forward "-----BEGIN PGP MESSAGE-----$" nil t)
806 (setq armor-start (match-beginning 0)
807 armor-end (re-search-forward "^-----END PGP MESSAGE-----$"
810 (error "No armor tail"))
811 (goto-char armor-start)
812 (let ((coding-system-for-read
813 (or coding-system-for-read
814 (if (re-search-forward "^Charset: \\(.*\\)" armor-end t)
815 (epa--find-coding-system-for-mime-charset
816 (intern (downcase (match-string 1))))))))
817 (goto-char armor-end)
818 (epa-decrypt-region armor-start armor-end)))))))
821 (defun epa-verify-region (start end)
822 "Verify the current region between START and END.
824 Don't use this command in Lisp programs!"
826 (let ((context (epg-make-context epa-protocol))
828 (epg-context-set-progress-callback context
829 #'epa-progress-callback-function
831 (setq plain (epg-verify-string
833 (epa--encode-coding-string
834 (buffer-substring start end)
835 (or coding-system-for-write
836 (get-text-property start
837 'epa-coding-system-used)))))
838 (if (y-or-n-p "Replace the original text? ")
839 (let ((inhibit-read-only t)
841 (delete-region start end)
844 (with-output-to-temp-buffer "*Temp*"
845 (set-buffer standard-output)
848 (if (epg-context-result-for context 'verify)
849 (epa-display-info (epg-verify-result-to-string
850 (epg-context-result-for context 'verify))))))
853 (defun epa-verify-cleartext-in-region (start end)
854 "Verify OpenPGP cleartext signed messages in the current region
855 between START and END.
857 Don't use this command in Lisp programs!"
861 (narrow-to-region start end)
863 (let (cleartext-start cleartext-end)
864 (while (re-search-forward "-----BEGIN PGP SIGNED MESSAGE-----$"
866 (setq cleartext-start (match-beginning 0))
867 (unless (re-search-forward "^-----BEGIN PGP SIGNATURE-----$"
869 (error "Invalid cleartext signed message"))
870 (setq cleartext-end (re-search-forward
871 "^-----END PGP SIGNATURE-----$"
873 (unless cleartext-end
874 (error "No cleartext tail"))
875 (epa-verify-region cleartext-start cleartext-end))))))
877 (if (fboundp 'select-safe-coding-system)
878 (defalias 'epa--select-safe-coding-system 'select-safe-coding-system)
879 (defun epa--select-safe-coding-system (from to)
880 buffer-file-coding-system))
883 (defun epa-sign-region (start end signers mode)
884 "Sign the current region between START and END by SIGNERS keys selected.
886 Don't use this command in Lisp programs!"
888 (let ((verbose current-prefix-arg))
889 (setq epa-last-coding-system-specified
890 (or coding-system-for-write
891 (epa--select-safe-coding-system
892 (region-beginning) (region-end))))
893 (list (region-beginning) (region-end)
895 (epa-select-keys (epg-make-context epa-protocol)
896 "Select keys for signing.
897 If no one is selected, default secret key is used. "
900 (epa--read-signature-type)
903 (let ((context (epg-make-context epa-protocol))
905 ;;(epg-context-set-armor context epa-armor)
906 (epg-context-set-armor context t)
907 ;;(epg-context-set-textmode context epa-textmode)
908 (epg-context-set-textmode context t)
909 (epg-context-set-signers context signers)
910 (epg-context-set-passphrase-callback context
911 #'epa-passphrase-callback-function)
912 (epg-context-set-progress-callback context
913 #'epa-progress-callback-function
915 (message "Signing...")
916 (setq signature (epg-sign-string context
917 (epa--encode-coding-string
918 (buffer-substring start end)
919 epa-last-coding-system-specified)
921 (message "Signing...done")
922 (delete-region start end)
924 (add-text-properties (point)
926 (insert (epa--decode-coding-string
928 (or coding-system-for-read
929 epa-last-coding-system-specified)))
931 (list 'epa-coding-system-used
932 epa-last-coding-system-specified
938 (if (fboundp 'derived-mode-p)
939 (defalias 'epa--derived-mode-p 'derived-mode-p)
940 (defun epa--derived-mode-p (&rest modes)
941 "Non-nil if the current major mode is derived from one of MODES.
942 Uses the `derived-mode-parent' property of the symbol to trace backwards."
943 (let ((parent major-mode))
944 (while (and (not (memq parent modes))
945 (setq parent (get parent 'derived-mode-parent))))
949 (defun epa-encrypt-region (start end recipients sign signers)
950 "Encrypt the current region between START and END for RECIPIENTS.
952 Don't use this command in Lisp programs!"
954 (let ((verbose current-prefix-arg)
955 (context (epg-make-context epa-protocol))
957 (setq epa-last-coding-system-specified
958 (or coding-system-for-write
959 (epa--select-safe-coding-system
960 (region-beginning) (region-end))))
961 (list (region-beginning) (region-end)
962 (epa-select-keys context
963 "Select recipients for encryption.
964 If no one is selected, symmetric encryption will be performed. ")
965 (setq sign (if verbose (y-or-n-p "Sign? ")))
967 (epa-select-keys context
968 "Select keys for signing. ")))))
970 (let ((context (epg-make-context epa-protocol))
972 ;;(epg-context-set-armor context epa-armor)
973 (epg-context-set-armor context t)
974 ;;(epg-context-set-textmode context epa-textmode)
975 (epg-context-set-textmode context t)
977 (epg-context-set-signers context signers))
978 (epg-context-set-passphrase-callback context
979 #'epa-passphrase-callback-function)
980 (epg-context-set-progress-callback context
981 #'epa-progress-callback-function
983 (message "Encrypting...")
984 (setq cipher (epg-encrypt-string context
985 (epa--encode-coding-string
986 (buffer-substring start end)
987 epa-last-coding-system-specified)
990 (message "Encrypting...done")
991 (delete-region start end)
993 (add-text-properties (point)
997 (list 'epa-coding-system-used
998 epa-last-coding-system-specified
1005 (defun epa-delete-keys (keys &optional allow-secret)
1006 "Delete selected KEYS.
1008 Don't use this command in Lisp programs!"
1010 (let ((keys (epa--marked-keys)))
1012 (error "No keys selected"))
1014 (eq (nth 1 epa-list-keys-arguments) t))))
1015 (let ((context (epg-make-context epa-protocol)))
1016 (message "Deleting...")
1017 (epg-delete-keys context keys allow-secret)
1018 (message "Deleting...done")
1019 (apply #'epa-list-keys epa-list-keys-arguments)))
1022 (defun epa-import-keys (file)
1023 "Import keys from FILE.
1025 Don't use this command in Lisp programs!"
1026 (interactive "fFile: ")
1027 (setq file (expand-file-name file))
1028 (let ((context (epg-make-context epa-protocol)))
1029 (message "Importing %s..." (file-name-nondirectory file))
1032 (epg-import-keys-from-file context file)
1033 (message "Importing %s...done" (file-name-nondirectory file)))
1035 (message "Importing %s...failed" (file-name-nondirectory file))))
1036 (if (epg-context-result-for context 'import)
1037 (epa-display-info (epg-import-result-to-string
1038 (epg-context-result-for context 'import))))
1039 (if (eq major-mode 'epa-key-list-mode)
1040 (apply #'epa-list-keys epa-list-keys-arguments))))
1043 (defun epa-import-keys-region (start end)
1044 "Import keys from the region.
1046 Don't use this command in Lisp programs!"
1048 (let ((context (epg-make-context epa-protocol)))
1049 (message "Importing...")
1052 (epg-import-keys-from-string context (buffer-substring start end))
1053 (message "Importing...done"))
1055 (message "Importing...failed")))
1056 (if (epg-context-result-for context 'import)
1057 (epa-display-info (epg-import-result-to-string
1058 (epg-context-result-for context 'import))))))
1061 (defun epa-import-armor-in-region (start end)
1062 "Import keys in the OpenPGP armor format in the current region
1063 between START and END.
1065 Don't use this command in Lisp programs!"
1069 (narrow-to-region start end)
1071 (let (armor-start armor-end)
1072 (while (re-search-forward
1073 "-----BEGIN \\(PGP \\(PUBLIC\\|PRIVATE\\) KEY BLOCK\\)-----$"
1075 (setq armor-start (match-beginning 0)
1076 armor-end (re-search-forward
1077 (concat "^-----END " (match-string 1) "-----$")
1080 (error "No armor tail"))
1081 (epa-import-keys-region armor-start armor-end))))))
1084 (defun epa-export-keys (keys file)
1085 "Export selected KEYS to FILE.
1087 Don't use this command in Lisp programs!"
1089 (let ((keys (epa--marked-keys))
1092 (error "No keys selected"))
1095 (concat (epg-sub-key-id (car (epg-key-sub-key-list (car keys))))
1096 (if epa-armor ".asc" ".gpg"))
1101 (concat "To file (default "
1102 (file-name-nondirectory default-name)
1104 (file-name-directory default-name)
1106 (let ((context (epg-make-context epa-protocol)))
1107 (epg-context-set-armor context epa-armor)
1108 (message "Exporting to %s..." (file-name-nondirectory file))
1109 (epg-export-keys-to-file context keys file)
1110 (message "Exporting to %s...done" (file-name-nondirectory file))))
1113 (defun epa-insert-keys (keys)
1114 "Insert selected KEYS after the point.
1116 Don't use this command in Lisp programs!"
1118 (list (epa-select-keys (epg-make-context epa-protocol)
1119 "Select keys to export. ")))
1120 (let ((context (epg-make-context epa-protocol)))
1121 ;;(epg-context-set-armor context epa-armor)
1122 (epg-context-set-armor context t)
1123 (insert (epg-export-keys-to-string context keys))))
1126 (defun epa-sign-keys (keys &optional local)
1127 "Sign selected KEYS.
1128 If a prefix-arg is specified, the signature is marked as non exportable.
1130 Don't use this command in Lisp programs!"
1132 (let ((keys (epa--marked-keys)))
1134 (error "No keys selected"))
1135 (list keys current-prefix-arg)))
1136 (let ((context (epg-make-context epa-protocol)))
1137 (epg-context-set-passphrase-callback context
1138 #'epa-passphrase-callback-function)
1139 (epg-context-set-progress-callback context
1140 #'epa-progress-callback-function
1142 (message "Signing keys...")
1143 (epg-sign-keys context keys local)
1144 (message "Signing keys...done")))
1145 (make-obsolete 'epa-sign-keys "Do not use.")
1149 ;;; epa.el ends here