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))
32 "The EasyPG Assistant"
35 (defcustom epa-protocol 'OpenPGP
36 "The default protocol."
37 :type '(choice (const :tag "OpenPGP" OpenPGP)
38 (const :tag "CMS" CMS))
41 (defcustom epa-armor nil
42 "If non-nil, epa commands create ASCII armored output."
46 (defcustom epa-textmode nil
47 "If non-nil, epa commands treat input files as text."
51 (defcustom epa-popup-info-window t
52 "If non-nil, status information from epa commands is displayed on
57 (defcustom epa-info-window-height 5
58 "Number of lines used to display status information."
62 (defgroup epa-faces nil
66 (defface epa-validity-high-face
67 '((((class color) (background dark))
68 (:foreground "PaleTurquoise" :bold t))
71 "Face used for displaying the high validity."
73 (defvar epa-validity-high-face 'epa-validity-high-face)
75 (defface epa-validity-medium-face
76 '((((class color) (background dark))
77 (:foreground "PaleTurquoise" :italic t))
80 "Face used for displaying the medium validity."
82 (defvar epa-validity-medium-face 'epa-validity-medium-face)
84 (defface epa-validity-low-face
87 "Face used for displaying the low validity."
89 (defvar epa-validity-low-face 'epa-validity-low-face)
91 (defface epa-validity-disabled-face
93 (:italic t :inverse-video t)))
94 "Face used for displaying the disabled validity."
96 (defvar epa-validity-disabled-face 'epa-validity-disabled-face)
98 (defface epa-string-face
101 (:foreground "lightyellow"))
104 (:foreground "blue4"))
107 "Face used for displaying the string."
109 (defvar epa-string-face 'epa-string-face)
111 (defface epa-mark-face
112 '((((class color) (background dark))
113 (:foreground "orange" :bold t))
115 (:foreground "red" :bold t)))
116 "Face used for displaying the high validity."
118 (defvar epa-mark-face 'epa-mark-face)
120 (defface epa-field-name-face
121 '((((class color) (background dark))
122 (:foreground "PaleTurquoise" :bold t))
124 "Face for the name of the attribute field."
126 (defvar epa-field-name-face 'epa-field-name-face)
128 (defface epa-field-body-face
129 '((((class color) (background dark))
130 (:foreground "turquoise" :italic t))
132 "Face for the body of the attribute field."
134 (defvar epa-field-body-face 'epa-field-body-face)
136 (defcustom epa-validity-face-alist
137 '((unknown . epa-validity-disabled-face)
138 (invalid . epa-validity-disabled-face)
139 (disabled . epa-validity-disabled-face)
140 (revoked . epa-validity-disabled-face)
141 (expired . epa-validity-disabled-face)
142 (none . epa-validity-low-face)
143 (undefined . epa-validity-low-face)
144 (never . epa-validity-low-face)
145 (marginal . epa-validity-medium-face)
146 (full . epa-validity-high-face)
147 (ultimate . epa-validity-high-face))
148 "An alist mapping validity values to faces."
152 (defcustom epa-font-lock-keywords
155 ("^\t\\([^\t:]+:\\)[ \t]*\\(.*\\)$"
156 (1 epa-field-name-face)
157 (2 epa-field-body-face)))
158 "Default expressions to addon in epa-mode."
159 :type '(repeat (list string))
162 (defconst epa-pubkey-algorithm-letter-alist
170 (defvar epa-keys-buffer nil)
171 (defvar epa-key-buffer-alist nil)
173 (defvar epa-list-keys-arguments nil)
174 (defvar epa-info-buffer nil)
175 (defvar epa-last-coding-system-specified nil)
177 (defvar epa-keys-mode-map
178 (let ((keymap (make-sparse-keymap)))
179 (define-key keymap "m" 'epa-mark)
180 (define-key keymap "u" 'epa-unmark)
181 (define-key keymap "d" 'epa-decrypt-file)
182 (define-key keymap "v" 'epa-verify-file)
183 (define-key keymap "s" 'epa-sign-file)
184 (define-key keymap "e" 'epa-encrypt-file)
185 (define-key keymap "r" 'epa-delete-keys)
186 (define-key keymap "i" 'epa-import-keys)
187 (define-key keymap "o" 'epa-export-keys)
188 (define-key keymap "g" 'epa-list-keys)
189 (define-key keymap "n" 'next-line)
190 (define-key keymap "p" 'previous-line)
191 (define-key keymap " " 'scroll-up)
192 (define-key keymap [delete] 'scroll-down)
193 (define-key keymap "q" 'epa-exit-buffer)
196 (defvar epa-key-mode-map
197 (let ((keymap (make-sparse-keymap)))
198 (define-key keymap "q" 'bury-buffer)
201 (defvar epa-info-mode-map
202 (let ((keymap (make-sparse-keymap)))
203 (define-key keymap "q" 'delete-window)
206 (defvar epa-exit-buffer-function #'bury-buffer)
208 (define-widget 'epa-key 'push-button
209 "Button for representing a epg-key object."
211 :button-face-get 'epa--key-widget-button-face-get
212 :value-create 'epa--key-widget-value-create
213 :action 'epa--key-widget-action
214 :help-echo 'epa--key-widget-help-echo)
216 (defun epa--key-widget-action (widget &optional event)
217 (epa--show-key (widget-get widget :value)))
219 (defun epa--key-widget-value-create (widget)
220 (let* ((key (widget-get widget :value))
221 (primary-sub-key (car (epg-key-sub-key-list key)))
222 (primary-user-id (car (epg-key-user-id-list key))))
223 (insert (format "%c "
224 (if (epg-sub-key-validity primary-sub-key)
225 (car (rassq (epg-sub-key-validity primary-sub-key)
226 epg-key-validity-alist))
228 (epg-sub-key-id primary-sub-key)
231 (if (stringp (epg-user-id-string primary-user-id))
232 (epg-user-id-string primary-user-id)
233 (epg-decode-dn (epg-user-id-string primary-user-id)))
236 (defun epa--key-widget-button-face-get (widget)
237 (let ((validity (epg-sub-key-validity (car (epg-key-sub-key-list
238 (widget-get widget :value))))))
240 (cdr (assq validity epa-validity-face-alist))
243 (defun epa--key-widget-help-echo (widget)
245 (epg-sub-key-id (car (epg-key-sub-key-list
246 (widget-get widget :value))))))
248 (if (fboundp 'encode-coding-string)
249 (defalias 'epa--encode-coding-string 'encode-coding-string)
250 (defalias 'epa--encode-coding-string 'identity))
252 (if (fboundp 'decode-coding-string)
253 (defalias 'epa--decode-coding-string 'decode-coding-string)
254 (defalias 'epa--decode-coding-string 'identity))
256 (defun epa-keys-mode ()
257 "Major mode for `epa-list-keys'."
258 (kill-all-local-variables)
259 (buffer-disable-undo)
260 (setq major-mode 'epa-keys-mode
264 (use-local-map epa-keys-mode-map)
265 (make-local-variable 'font-lock-defaults)
266 (setq font-lock-defaults '(epa-font-lock-keywords t))
267 ;; In XEmacs, auto-initialization of font-lock is not effective
268 ;; if buffer-file-name is not set.
269 (font-lock-set-defaults)
270 (make-local-variable 'epa-exit-buffer-function)
271 (run-hooks 'epa-keys-mode-hook))
273 (defun epa-key-mode ()
274 "Major mode for a key description."
275 (kill-all-local-variables)
276 (buffer-disable-undo)
277 (setq major-mode 'epa-key-mode
281 (use-local-map epa-key-mode-map)
282 (make-local-variable 'font-lock-defaults)
283 (setq font-lock-defaults '(epa-font-lock-keywords t))
284 ;; In XEmacs, auto-initialization of font-lock is not effective
285 ;; if buffer-file-name is not set.
286 (font-lock-set-defaults)
287 (make-local-variable 'epa-exit-buffer-function)
288 (run-hooks 'epa-key-mode-hook))
290 (defun epa-info-mode ()
291 "Major mode for `epa-info-buffer'."
292 (kill-all-local-variables)
293 (buffer-disable-undo)
294 (setq major-mode 'epa-info-mode
298 (use-local-map epa-info-mode-map)
299 (run-hooks 'epa-info-mode-hook))
301 (defun epa-mark (&optional arg)
302 "Mark the current line.
303 If ARG is non-nil, unmark the current line."
305 (let ((inhibit-read-only t)
309 (setq properties (text-properties-at (point)))
311 (insert (if arg " " "*"))
312 (set-text-properties (1- (point)) (point) properties)
315 (defun epa-unmark (&optional arg)
316 "Unmark the current line.
317 If ARG is non-nil, mark the current line."
319 (epa-mark (not arg)))
321 (defun epa-toggle-mark ()
322 "Toggle the mark the current line."
324 (epa-mark (eq (char-after (save-excursion (beginning-of-line) (point))) ?*)))
326 (defun epa-exit-buffer ()
327 "Exit the current buffer.
328 `epa-exit-buffer-function' is called if it is set."
330 (funcall epa-exit-buffer-function))
333 (defun epa-list-keys (&optional name mode)
334 "List all keys matched with NAME from the keyring.
335 If MODE is non-nil, it reads the private keyring. Otherwise, it
336 reads the public keyring."
338 (if current-prefix-arg
339 (let ((name (read-string "Pattern: "
340 (if epa-list-keys-arguments
341 (car epa-list-keys-arguments)))))
342 (list (if (equal name "") nil name)
343 (y-or-n-p "Secret keys? ")))
344 (or epa-list-keys-arguments (list nil nil))))
345 (unless (and epa-keys-buffer
346 (buffer-live-p epa-keys-buffer))
347 (setq epa-keys-buffer (generate-new-buffer "*Keys*")))
348 (set-buffer epa-keys-buffer)
349 (let ((inhibit-read-only t)
352 (context (epg-make-context epa-protocol)))
353 (unless (get-text-property point 'epa-list-keys)
354 (setq point (next-single-property-change point 'epa-list-keys)))
357 (or (next-single-property-change point 'epa-list-keys)
360 (epa--insert-keys context name mode)
363 (set-keymap-parent (current-local-map) widget-keymap))
364 (make-local-variable 'epa-list-keys-arguments)
365 (setq epa-list-keys-arguments (list name mode))
366 (goto-char (point-min))
367 (pop-to-buffer (current-buffer)))
369 (defun epa--insert-keys (context name mode)
372 (narrow-to-region (point) (point))
373 (let ((keys (epg-list-keys context name mode))
378 (add-text-properties point (point)
379 (list 'epa-key (car keys)
384 (widget-create 'epa-key :value (car keys))
386 (setq keys (cdr keys))))
387 (add-text-properties (point-min) (point-max)
388 (list 'epa-list-keys t
394 (defun epa--marked-keys ()
396 (set-buffer epa-keys-buffer)
397 (goto-char (point-min))
399 (while (re-search-forward "^\\*" nil t)
400 (if (setq key (get-text-property (match-beginning 0)
402 (setq keys (cons key keys))))
406 (let ((key (get-text-property (point) 'epa-key)))
411 (defun epa-select-keys (context prompt &optional names secret)
412 "Display a user's keyring and ask him to select keys.
413 CONTEXT is an epg-context.
414 PROMPT is a string to prompt with.
415 NAMES is a list of strings to be matched with keys. If it is nil, all
417 If SECRET is non-nil, list secret keys instead of public keys."
419 (unless (and epa-keys-buffer
420 (buffer-live-p epa-keys-buffer))
421 (setq epa-keys-buffer (generate-new-buffer "*Keys*")))
422 (let ((inhibit-read-only t)
424 (set-buffer epa-keys-buffer)
428 :notify (lambda (&rest ignore) (abort-recursive-edit))
430 (substitute-command-keys
431 "Click here or \\[abort-recursive-edit] to cancel")
434 :notify (lambda (&rest ignore) (exit-recursive-edit))
436 (substitute-command-keys
437 "Click here or \\[exit-recursive-edit] to finish")
442 (epa--insert-keys context (car names) secret)
443 (if (get-text-property (point) 'epa-list-keys)
445 (goto-char (point-max))
446 (setq names (cdr names)))
449 (epa--insert-keys context nil secret)
450 (if (get-text-property (point) 'epa-list-keys)
452 (epa--insert-keys context nil nil)))
455 (set-keymap-parent (current-local-map) widget-keymap)
456 (setq epa-exit-buffer-function #'abort-recursive-edit)
457 (goto-char (point-min))
458 (pop-to-buffer (current-buffer)))
463 (if (get-buffer-window epa-keys-buffer)
464 (delete-window (get-buffer-window epa-keys-buffer)))
465 (kill-buffer epa-keys-buffer))))
467 (defun epa--show-key (key)
468 (let* ((primary-sub-key (car (epg-key-sub-key-list key)))
469 (entry (assoc (epg-sub-key-id primary-sub-key)
470 epa-key-buffer-alist))
471 (inhibit-read-only t)
475 (setq entry (cons (epg-sub-key-id primary-sub-key) nil)
476 epa-key-buffer-alist (cons entry epa-key-buffer-alist)))
477 (unless (and (cdr entry)
478 (buffer-live-p (cdr entry)))
479 (setcdr entry (generate-new-buffer
480 (format "*Key*%s" (epg-sub-key-id primary-sub-key)))))
481 (set-buffer (cdr entry))
482 (make-local-variable 'epa-key)
485 (setq pointer (epg-key-user-id-list key))
489 (if (epg-user-id-validity (car pointer))
491 (car (rassq (epg-user-id-validity (car pointer))
492 epg-key-validity-alist)))
495 (if (stringp (epg-user-id-string (car pointer)))
496 (epg-user-id-string (car pointer))
497 (epg-decode-dn (epg-user-id-string (car pointer))))
499 (setq pointer (cdr pointer)))
500 (setq pointer (epg-key-sub-key-list key))
503 (if (epg-sub-key-validity (car pointer))
505 (car (rassq (epg-sub-key-validity (car pointer))
506 epg-key-validity-alist)))
509 (epg-sub-key-id (car pointer))
512 (epg-sub-key-length (car pointer)))
514 (cdr (assq (epg-sub-key-algorithm (car pointer))
515 epg-pubkey-algorithm-alist))
517 (format-time-string "%Y-%m-%d"
518 (epg-sub-key-creation-time (car pointer)))
519 (if (epg-sub-key-expiration-time (car pointer))
520 (format "\n\tExpires: %s"
521 (format-time-string "%Y-%m-%d"
522 (epg-sub-key-expiration-time
526 (mapconcat #'symbol-name
527 (epg-sub-key-capability (car pointer))
530 (epg-sub-key-fingerprint (car pointer))
532 (setq pointer (cdr pointer)))
533 (goto-char (point-min))
534 (pop-to-buffer (current-buffer))
537 (defun epa-display-info (info)
538 (if epa-popup-info-window
539 (save-selected-window
540 (unless epa-info-buffer
541 (setq epa-info-buffer (generate-new-buffer "*Info*")))
543 (set-buffer epa-info-buffer)
544 (let ((inhibit-read-only t)
549 (goto-char (point-min)))
550 (if (> (window-height)
551 epa-info-window-height)
552 (set-window-buffer (split-window nil (- (window-height)
553 epa-info-window-height))
555 (pop-to-buffer epa-info-buffer)
556 (if (> (window-height) epa-info-window-height)
557 (shrink-window (- (window-height) epa-info-window-height)))))
558 (message "%s" info)))
560 (defun epa-display-verify-result (verify-result)
561 (epa-display-info (epg-verify-result-to-string verify-result)))
562 (make-obsolete 'epa-display-verify-result 'epa-display-info)
564 (defun epa-passphrase-callback-function (context key-id handback)
566 (read-passwd "Passphrase for symmetric encryption: "
567 (eq (epg-context-operation context) 'encrypt))
570 "Passphrase for PIN: "
571 (let ((entry (assoc key-id epg-user-id-alist)))
573 (format "Passphrase for %s %s: " key-id (cdr entry))
574 (format "Passphrase for %s: " key-id)))))))
576 (defun epa-progress-callback-function (context what char current total
578 (message "%s: %d%% (%d/%d)" what
579 (if (> total 0) (floor (* (/ current (float total)) 100)) 0)
583 (defun epa-decrypt-file (file)
585 (interactive "fFile: ")
586 (setq file (expand-file-name file))
587 (let* ((default-name (file-name-sans-extension file))
588 (plain (expand-file-name
590 (concat "To file (default "
591 (file-name-nondirectory default-name)
593 (file-name-directory default-name)
595 (context (epg-make-context epa-protocol)))
596 (epg-context-set-passphrase-callback context
597 #'epa-passphrase-callback-function)
598 (epg-context-set-progress-callback context
599 #'epa-progress-callback-function)
600 (message "Decrypting %s..." (file-name-nondirectory file))
601 (epg-decrypt-file context file plain)
602 (message "Decrypting %s...wrote %s" (file-name-nondirectory file)
603 (file-name-nondirectory plain))
604 (if (epg-context-result-for context 'verify)
605 (epa-display-info (epg-verify-result-to-string
606 (epg-context-result-for context 'verify))))))
609 (defun epa-verify-file (file)
611 (interactive "fFile: ")
612 (setq file (expand-file-name file))
613 (let* ((context (epg-make-context epa-protocol))
614 (plain (if (equal (file-name-extension file) "sig")
615 (file-name-sans-extension file))))
616 (epg-context-set-progress-callback context
617 #'epa-progress-callback-function)
618 (message "Verifying %s..." (file-name-nondirectory file))
619 (epg-verify-file context file plain)
620 (message "Verifying %s...done" (file-name-nondirectory file))
621 (if (epg-context-result-for context 'verify)
622 (epa-display-info (epg-verify-result-to-string
623 (epg-context-result-for context 'verify))))))
626 (defun epa-sign-file (file signers mode)
627 "Sign FILE by SIGNERS keys selected."
629 (list (expand-file-name (read-file-name "File: "))
630 (epa-select-keys (epg-make-context epa-protocol)
631 "Select keys for signing.
632 If no one is selected, default secret key is used. "
636 (message "Signature type (n,c,d,?) ")
637 (let ((c (read-char)))
639 (throw 'done 'clear))
641 (throw 'done 'detached))
643 (with-output-to-temp-buffer "*Help*"
645 (set-buffer standard-output)
647 n - Create a normal signature
648 c - Create a cleartext signature
649 d - Create a detached signature
653 (throw 'done nil))))))))
654 (let ((signature (concat file
655 (if (eq epa-protocol 'OpenPGP)
658 '(nil t normal detached))))
660 (if (memq mode '(t detached))
663 (if (memq mode '(t detached))
666 (context (epg-make-context epa-protocol)))
667 (epg-context-set-armor context epa-armor)
668 (epg-context-set-textmode context epa-textmode)
669 (epg-context-set-signers context signers)
670 (epg-context-set-passphrase-callback context
671 #'epa-passphrase-callback-function)
672 (epg-context-set-progress-callback context
673 #'epa-progress-callback-function)
674 (message "Signing %s..." (file-name-nondirectory file))
675 (epg-sign-file context file signature mode)
676 (message "Signing %s...wrote %s" (file-name-nondirectory file)
677 (file-name-nondirectory signature))))
680 (defun epa-encrypt-file (file recipients)
681 "Encrypt FILE for RECIPIENTS."
683 (list (expand-file-name (read-file-name "File: "))
684 (epa-select-keys (epg-make-context epa-protocol)
685 "Select recipients for encryption.
686 If no one is selected, symmetric encryption will be performed. ")))
687 (let ((cipher (concat file (if (eq epa-protocol 'OpenPGP)
688 (if epa-armor ".asc" ".gpg")
690 (context (epg-make-context epa-protocol)))
691 (epg-context-set-armor context epa-armor)
692 (epg-context-set-textmode context epa-textmode)
693 (epg-context-set-passphrase-callback context
694 #'epa-passphrase-callback-function)
695 (epg-context-set-progress-callback context
696 #'epa-progress-callback-function)
697 (message "Encrypting %s..." (file-name-nondirectory file))
698 (epg-encrypt-file context file recipients cipher)
699 (message "Encrypting %s...wrote %s" (file-name-nondirectory file)
700 (file-name-nondirectory cipher))))
703 (defun epa-decrypt-region (start end)
704 "Decrypt the current region between START and END.
706 Don't use this command in Lisp programs!"
709 (let ((context (epg-make-context epa-protocol))
711 (epg-context-set-passphrase-callback context
712 #'epa-passphrase-callback-function)
713 (epg-context-set-progress-callback context
714 #'epa-progress-callback-function)
715 (message "Decrypting...")
716 (setq plain (epg-decrypt-string context (buffer-substring start end)))
717 (message "Decrypting...done")
718 (delete-region start end)
720 (insert (epa--decode-coding-string plain
721 (or coding-system-for-read
723 start 'epa-coding-system-used))))
724 (if (epg-context-result-for context 'verify)
725 (epa-display-info (epg-verify-result-to-string
726 (epg-context-result-for context 'verify)))))))
729 (defun epa-decrypt-armor-in-region (start end)
730 "Decrypt OpenPGP armors in the current region between START and END.
732 Don't use this command in Lisp programs!"
736 (narrow-to-region start end)
738 (let (armor-start armor-end charset coding-system)
739 (while (re-search-forward "-----BEGIN PGP MESSAGE-----$" nil t)
740 (setq armor-start (match-beginning 0)
741 armor-end (re-search-forward "^-----END PGP MESSAGE-----$"
744 (error "No armor tail"))
745 (goto-char armor-start)
746 (if (re-search-forward "^Charset: \\(.*\\)" armor-end t)
747 (setq charset (match-string 1)))
748 (if coding-system-for-read
749 (setq coding-system coding-system-for-read)
751 (setq coding-system (intern (downcase charset)))
752 (setq coding-system 'utf-8)))
753 (let ((coding-system-for-read coding-system))
754 (epa-decrypt-region start end)))))))
756 (if (fboundp 'select-safe-coding-system)
757 (defalias 'epa--select-safe-coding-system 'select-safe-coding-system)
758 (defun epa--select-safe-coding-system (from to)
759 buffer-file-coding-system))
762 (defun epa-verify-region (start end)
763 "Verify the current region between START and END.
765 Don't use this command in Lisp programs!"
767 (let ((context (epg-make-context epa-protocol)))
768 (epg-context-set-progress-callback context
769 #'epa-progress-callback-function)
770 (epg-verify-string context
771 (epa--encode-coding-string
772 (buffer-substring start end)
773 (or coding-system-for-write
774 (get-text-property start
775 'epa-coding-system-used))))
776 (if (epg-context-result-for context 'verify)
777 (epa-display-info (epg-verify-result-to-string
778 (epg-context-result-for context 'verify))))))
781 (defun epa-verify-cleartext-in-region (start end)
782 "Verify OpenPGP cleartext signed messages in the current region
783 between START and END.
785 Don't use this command in Lisp programs!"
789 (narrow-to-region start end)
791 (let (armor-start armor-end)
792 (while (re-search-forward "-----BEGIN PGP SIGNED MESSAGE-----$"
794 (setq armor-start (match-beginning 0))
795 (unless (re-search-forward "^-----BEGIN PGP SIGNATURE-----$"
797 (error "Invalid cleartext signed message"))
798 (setq armor-end (re-search-forward
799 "^-----END PGP SIGNATURE-----$"
802 (error "No armor tail"))
803 (epa-verify-region armor-start armor-end))))))
806 (defun epa-sign-region (start end signers mode)
807 "Sign the current region between START and END by SIGNERS keys selected.
809 Don't use this command in Lisp programs!"
812 (setq epa-last-coding-system-specified
813 (or coding-system-for-write
814 (epa--select-safe-coding-system (region-beginning)
816 (list (region-beginning) (region-end)
817 (epa-select-keys (epg-make-context epa-protocol)
818 "Select keys for signing.
819 If no one is selected, default secret key is used. "
823 (message "Signature type (n,c,d,?) ")
824 (let ((c (read-char)))
826 (throw 'done 'clear))
828 (throw 'done 'detached))
830 (with-output-to-temp-buffer "*Help*"
832 (set-buffer standard-output)
834 n - Create a normal signature
835 c - Create a cleartext signature
836 d - Create a detached signature
840 (throw 'done nil)))))))))
842 (let ((context (epg-make-context epa-protocol))
844 ;;(epg-context-set-armor context epa-armor)
845 (epg-context-set-armor context t)
846 ;;(epg-context-set-textmode context epa-textmode)
847 (epg-context-set-textmode context t)
848 (epg-context-set-signers context signers)
849 (epg-context-set-passphrase-callback context
850 #'epa-passphrase-callback-function)
851 (epg-context-set-progress-callback context
852 #'epa-progress-callback-function)
853 (message "Signing...")
854 (setq signature (epg-sign-string context
855 (epa--encode-coding-string
856 (buffer-substring start end)
857 epa-last-coding-system-specified)
859 (message "Signing...done")
860 (delete-region start end)
861 (add-text-properties (point)
863 (insert (epa--decode-coding-string
865 (or coding-system-for-read
866 epa-last-coding-system-specified)))
868 (list 'epa-coding-system-used
869 epa-last-coding-system-specified
876 (defun epa-encrypt-region (start end recipients)
877 "Encrypt the current region between START and END for RECIPIENTS.
879 Don't use this command in Lisp programs!"
882 (setq epa-last-coding-system-specified
883 (or coding-system-for-write
884 (epa--select-safe-coding-system (region-beginning)
886 (list (region-beginning) (region-end)
887 (epa-select-keys (epg-make-context epa-protocol)
888 "Select recipients for encryption.
889 If no one is selected, symmetric encryption will be performed. "))))
891 (let ((context (epg-make-context epa-protocol))
893 ;;(epg-context-set-armor context epa-armor)
894 (epg-context-set-armor context t)
895 ;;(epg-context-set-textmode context epa-textmode)
896 (epg-context-set-textmode context t)
897 (epg-context-set-passphrase-callback context
898 #'epa-passphrase-callback-function)
899 (epg-context-set-progress-callback context
900 #'epa-progress-callback-function)
901 (message "Encrypting...")
902 (setq cipher (epg-encrypt-string context
903 (epa--encode-coding-string
904 (buffer-substring start end)
905 epa-last-coding-system-specified)
907 (message "Encrypting...done")
908 (delete-region start end)
909 (add-text-properties (point)
913 (list 'epa-coding-system-used
914 epa-last-coding-system-specified
921 (defun epa-delete-keys (keys &optional allow-secret)
922 "Delete selected KEYS.
924 Don't use this command in Lisp programs!"
926 (let ((keys (epa--marked-keys)))
928 (error "No keys selected"))
930 (eq (nth 1 epa-list-keys-arguments) t))))
931 (let ((context (epg-make-context epa-protocol)))
932 (message "Deleting...")
933 (epg-delete-keys context keys allow-secret)
934 (message "Deleting...done")
935 (apply #'epa-list-keys epa-list-keys-arguments)))
938 (defun epa-import-keys (file)
939 "Import keys from FILE.
941 Don't use this command in Lisp programs!"
942 (interactive "fFile: ")
943 (setq file (expand-file-name file))
944 (let ((context (epg-make-context epa-protocol)))
945 (message "Importing %s..." (file-name-nondirectory file))
948 (epg-import-keys-from-file context file)
949 (message "Importing %s...done" (file-name-nondirectory file)))
951 (message "Importing %s...failed" (file-name-nondirectory file))))
952 (if (epg-context-result-for context 'import)
953 (epa-display-info (epg-import-result-to-string
954 (epg-context-result-for context 'import))))
955 (if (eq major-mode 'epa-keys-mode)
956 (apply #'epa-list-keys epa-list-keys-arguments))))
959 (defun epa-import-keys-region (start end)
960 "Import keys from the region.
962 Don't use this command in Lisp programs!"
964 (let ((context (epg-make-context epa-protocol)))
965 (message "Importing...")
968 (epg-import-keys-from-string context (buffer-substring start end))
969 (message "Importing...done"))
971 (message "Importing...failed")))
972 (if (epg-context-result-for context 'import)
973 (epa-display-info (epg-import-result-to-string
974 (epg-context-result-for context 'import))))))
977 (defun epa-export-keys (keys file)
978 "Export selected KEYS to FILE.
980 Don't use this command in Lisp programs!"
982 (let ((keys (epa--marked-keys))
985 (error "No keys selected"))
988 (concat (epg-sub-key-id (car (epg-key-sub-key-list (car keys))))
989 (if epa-armor ".asc" ".gpg"))
994 (concat "To file (default "
995 (file-name-nondirectory default-name)
997 (file-name-directory default-name)
999 (let ((context (epg-make-context epa-protocol)))
1000 (epg-context-set-armor context epa-armor)
1001 (message "Exporting to %s..." (file-name-nondirectory file))
1002 (epg-export-keys-to-file context keys file)
1003 (message "Exporting to %s...done" (file-name-nondirectory file))))
1006 (defun epa-insert-keys (keys)
1007 "Insert selected KEYS after the point.
1009 Don't use this command in Lisp programs!"
1011 (list (epa-select-keys (epg-make-context epa-protocol)
1012 "Select keys to export. ")))
1013 (let ((context (epg-make-context epa-protocol)))
1014 ;;(epg-context-set-armor context epa-armor)
1015 (epg-context-set-armor context t)
1016 (insert (epg-export-keys-to-string context keys))))
1019 (defun epa-sign-keys (keys &optional local)
1020 "Sign selected KEYS.
1021 If a prefix-arg is specified, the signature is marked as non exportable.
1023 Don't use this command in Lisp programs!"
1025 (let ((keys (epa--marked-keys)))
1027 (error "No keys selected"))
1028 (list keys current-prefix-arg)))
1029 (let ((context (epg-make-context epa-protocol)))
1030 (epg-context-set-passphrase-callback context
1031 #'epa-passphrase-callback-function)
1032 (epg-context-set-progress-callback context
1033 #'epa-progress-callback-function)
1034 (message "Signing keys...")
1035 (epg-sign-keys context keys local)
1036 (message "Signing keys...done")))
1037 (make-obsolete 'epa-sign-keys "Do not use.")
1041 ;;; epa.el ends here