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-key)
181 (define-key keymap "u" 'epa-unmark-key)
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))))))
250 (if (fboundp 'encode-coding-string)
251 (defalias 'epa--encode-coding-string 'encode-coding-string)
252 (defalias 'epa--encode-coding-string 'identity)))
255 (if (fboundp 'decode-coding-string)
256 (defalias 'epa--decode-coding-string 'decode-coding-string)
257 (defalias 'epa--decode-coding-string 'identity)))
259 (defun epa-key-list-mode ()
260 "Major mode for `epa-list-keys'."
261 (kill-all-local-variables)
262 (buffer-disable-undo)
263 (setq major-mode 'epa-key-list-mode
267 (use-local-map epa-key-list-mode-map)
268 (make-local-variable 'font-lock-defaults)
269 (setq font-lock-defaults '(epa-font-lock-keywords t))
270 ;; In XEmacs, auto-initialization of font-lock is not effective
271 ;; if buffer-file-name is not set.
272 (font-lock-set-defaults)
273 (make-local-variable 'epa-exit-buffer-function)
274 (make-local-variable 'revert-buffer-function)
275 (setq revert-buffer-function 'epa--key-list-revert-buffer)
276 (run-hooks 'epa-key-list-mode-hook))
278 (defun epa-key-mode ()
279 "Major mode for a key description."
280 (kill-all-local-variables)
281 (buffer-disable-undo)
282 (setq major-mode 'epa-key-mode
286 (use-local-map epa-key-mode-map)
287 (make-local-variable 'font-lock-defaults)
288 (setq font-lock-defaults '(epa-font-lock-keywords t))
289 ;; In XEmacs, auto-initialization of font-lock is not effective
290 ;; if buffer-file-name is not set.
291 (font-lock-set-defaults)
292 (make-local-variable 'epa-exit-buffer-function)
293 (run-hooks 'epa-key-mode-hook))
295 (defun epa-info-mode ()
296 "Major mode for `epa-info-buffer'."
297 (kill-all-local-variables)
298 (buffer-disable-undo)
299 (setq major-mode 'epa-info-mode
303 (use-local-map epa-info-mode-map)
304 (run-hooks 'epa-info-mode-hook))
306 (defun epa-mark-key (&optional arg)
307 "Mark a key on the current line.
308 If ARG is non-nil, unmark the key."
310 (let ((inhibit-read-only t)
314 (unless (get-text-property (point) 'epa-key)
315 (error "No key on this line"))
316 (setq properties (text-properties-at (point)))
318 (insert (if arg " " "*"))
319 (set-text-properties (1- (point)) (point) properties)
322 (defun epa-unmark-key (&optional arg)
323 "Unmark a key on the current line.
324 If ARG is non-nil, mark the key."
326 (epa-mark-key (not arg)))
328 (defun epa-exit-buffer ()
329 "Exit the current buffer.
330 `epa-exit-buffer-function' is called if it is set."
332 (funcall epa-exit-buffer-function))
334 (defun epa--insert-keys (keys)
337 (narrow-to-region (point) (point))
342 (add-text-properties point (point)
343 (list 'epa-key (car keys)
348 (widget-create 'epa-key :value (car keys))
350 (setq keys (cdr keys))))
351 (add-text-properties (point-min) (point-max)
352 (list 'epa-list-keys t
358 (defun epa--list-keys (name secret)
359 (unless (and epa-keys-buffer
360 (buffer-live-p epa-keys-buffer))
361 (setq epa-keys-buffer (generate-new-buffer "*Keys*")))
362 (set-buffer epa-keys-buffer)
364 (let ((inhibit-read-only t)
367 (context (epg-make-context epa-protocol)))
368 (unless (get-text-property point 'epa-list-keys)
369 (setq point (next-single-property-change point 'epa-list-keys)))
372 (or (next-single-property-change point 'epa-list-keys)
375 (epa--insert-keys (epg-list-keys context name secret))
377 (set-keymap-parent (current-local-map) widget-keymap))
378 (make-local-variable 'epa-list-keys-arguments)
379 (setq epa-list-keys-arguments (list name secret))
380 (goto-char (point-min))
381 (pop-to-buffer (current-buffer)))
384 (defun epa-list-keys (&optional name)
385 "List all keys matched with NAME from the public keyring."
387 (if current-prefix-arg
388 (let ((name (read-string "Pattern: "
389 (if epa-list-keys-arguments
390 (car epa-list-keys-arguments)))))
391 (list (if (equal name "") nil name)))
393 (epa--list-keys name nil))
396 (defun epa-list-secret-keys (&optional name)
397 "List all keys matched with NAME from the private keyring."
399 (if current-prefix-arg
400 (let ((name (read-string "Pattern: "
401 (if epa-list-keys-arguments
402 (car epa-list-keys-arguments)))))
403 (list (if (equal name "") nil name)))
405 (epa--list-keys name t))
407 (defun epa--key-list-revert-buffer (&optional ignore-auto noconfirm)
408 (apply #'epa--list-keys epa-list-keys-arguments))
410 (defun epa--marked-keys ()
412 (set-buffer epa-keys-buffer)
413 (goto-char (point-min))
415 (while (re-search-forward "^\\*" nil t)
416 (if (setq key (get-text-property (match-beginning 0)
418 (setq keys (cons key keys))))
422 (let ((key (get-text-property (point) 'epa-key)))
426 (defun epa--select-keys (prompt keys)
428 (unless (and epa-keys-buffer
429 (buffer-live-p epa-keys-buffer))
430 (setq epa-keys-buffer (generate-new-buffer "*Keys*")))
431 (set-buffer epa-keys-buffer)
433 (let ((inhibit-read-only t)
437 (substitute-command-keys "\
438 - `\\[epa-mark-key]' to mark a key on the line
439 - `\\[epa-unmark-key]' to unmark a key on the line\n"))
441 :notify (lambda (&rest ignore) (abort-recursive-edit))
443 (substitute-command-keys
444 "Click here or \\[abort-recursive-edit] to cancel")
447 :notify (lambda (&rest ignore) (exit-recursive-edit))
449 (substitute-command-keys
450 "Click here or \\[exit-recursive-edit] to finish")
453 (epa--insert-keys keys)
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))))
468 (defun epa-select-keys (context prompt &optional names secret)
469 "Display a user's keyring and ask him to select keys.
470 CONTEXT is an epg-context.
471 PROMPT is a string to prompt with.
472 NAMES is a list of strings to be matched with keys. If it is nil, all
474 If SECRET is non-nil, list secret keys instead of public keys."
475 (let ((keys (epg-list-keys context names secret)))
476 (if (> (length keys) 1)
477 (epa--select-keys prompt keys)
480 (defun epa--format-fingerprint-1 (fingerprint unit-size block-size)
484 (goto-char (point-min))
486 (goto-char (+ (point) unit-size))
488 (setq unit (1+ unit))
489 (insert (if (= (% unit block-size) 0) " " " ")))
492 (defun epa--format-fingerprint (fingerprint)
494 (if (= (length fingerprint) 40)
495 ;; 1234 5678 9ABC DEF0 1234 5678 9ABC DEF0 1234 5678
496 (epa--format-fingerprint-1 fingerprint 4 5)
497 ;; 12 34 56 78 9A BC DE F0 12 34 56 78 9A BC DE F0
498 (epa--format-fingerprint-1 fingerprint 2 8))))
500 (defun epa--show-key (key)
501 (let* ((primary-sub-key (car (epg-key-sub-key-list key)))
502 (entry (assoc (epg-sub-key-id primary-sub-key)
503 epa-key-buffer-alist))
504 (inhibit-read-only t)
508 (setq entry (cons (epg-sub-key-id primary-sub-key) nil)
509 epa-key-buffer-alist (cons entry epa-key-buffer-alist)))
510 (unless (and (cdr entry)
511 (buffer-live-p (cdr entry)))
512 (setcdr entry (generate-new-buffer
513 (format "*Key*%s" (epg-sub-key-id primary-sub-key)))))
514 (set-buffer (cdr entry))
516 (make-local-variable 'epa-key)
519 (setq pointer (epg-key-user-id-list key))
523 (if (epg-user-id-validity (car pointer))
525 (car (rassq (epg-user-id-validity (car pointer))
526 epg-key-validity-alist)))
529 (if (stringp (epg-user-id-string (car pointer)))
530 (epg-user-id-string (car pointer))
531 (epg-decode-dn (epg-user-id-string (car pointer))))
533 (setq pointer (cdr pointer)))
534 (setq pointer (epg-key-sub-key-list key))
537 (if (epg-sub-key-validity (car pointer))
539 (car (rassq (epg-sub-key-validity (car pointer))
540 epg-key-validity-alist)))
543 (epg-sub-key-id (car pointer))
546 (epg-sub-key-length (car pointer)))
548 (cdr (assq (epg-sub-key-algorithm (car pointer))
549 epg-pubkey-algorithm-alist))
551 (format-time-string "%Y-%m-%d"
552 (epg-sub-key-creation-time (car pointer)))
553 (if (epg-sub-key-expiration-time (car pointer))
554 (format "\n\tExpires: %s"
555 (format-time-string "%Y-%m-%d"
556 (epg-sub-key-expiration-time
560 (mapconcat #'symbol-name
561 (epg-sub-key-capability (car pointer))
564 (epa--format-fingerprint (epg-sub-key-fingerprint (car pointer)))
566 (setq pointer (cdr pointer)))
567 (goto-char (point-min))
568 (pop-to-buffer (current-buffer))))
570 (defun epa-display-info (info)
571 (if epa-popup-info-window
572 (save-selected-window
573 (unless (and epa-info-buffer (buffer-live-p epa-info-buffer))
574 (setq epa-info-buffer (generate-new-buffer "*Info*")))
575 (if (get-buffer-window epa-info-buffer)
576 (delete-window (get-buffer-window epa-info-buffer)))
578 (set-buffer epa-info-buffer)
579 (let ((inhibit-read-only t)
584 (goto-char (point-min)))
585 (if (> (window-height)
586 epa-info-window-height)
587 (set-window-buffer (split-window nil (- (window-height)
588 epa-info-window-height))
590 (pop-to-buffer epa-info-buffer)
591 (if (> (window-height) epa-info-window-height)
592 (shrink-window (- (window-height) epa-info-window-height)))))
593 (message "%s" info)))
595 (defun epa-display-verify-result (verify-result)
596 (epa-display-info (epg-verify-result-to-string verify-result)))
597 (make-obsolete 'epa-display-verify-result 'epa-display-info)
599 (defun epa-passphrase-callback-function (context key-id handback)
601 (read-passwd "Passphrase for symmetric encryption: "
602 (eq (epg-context-operation context) 'encrypt))
605 "Passphrase for PIN: "
606 (let ((entry (assoc key-id epg-user-id-alist)))
608 (format "Passphrase for %s %s: " key-id (cdr entry))
609 (format "Passphrase for %s: " key-id)))))))
611 (defun epa-progress-callback-function (context what char current total
613 (message "%s%d%% (%d/%d)" (or handback
615 (if (> total 0) (floor (* (/ current (float total)) 100)) 0)
619 (defun epa-decrypt-file (file)
621 (interactive "fFile: ")
622 (setq file (expand-file-name file))
623 (let* ((default-name (file-name-sans-extension file))
624 (plain (expand-file-name
626 (concat "To file (default "
627 (file-name-nondirectory default-name)
629 (file-name-directory default-name)
631 (context (epg-make-context epa-protocol)))
632 (epg-context-set-passphrase-callback context
633 #'epa-passphrase-callback-function)
634 (epg-context-set-progress-callback context
635 #'epa-progress-callback-function
636 (format "Decrypting %s..."
637 (file-name-nondirectory file)))
638 (message "Decrypting %s..." (file-name-nondirectory file))
639 (epg-decrypt-file context file plain)
640 (message "Decrypting %s...wrote %s" (file-name-nondirectory file)
641 (file-name-nondirectory plain))
642 (if (epg-context-result-for context 'verify)
643 (epa-display-info (epg-verify-result-to-string
644 (epg-context-result-for context 'verify))))))
647 (defun epa-verify-file (file)
649 (interactive "fFile: ")
650 (setq file (expand-file-name file))
651 (let* ((context (epg-make-context epa-protocol))
652 (plain (if (equal (file-name-extension file) "sig")
653 (file-name-sans-extension file))))
654 (epg-context-set-progress-callback context
655 #'epa-progress-callback-function
656 (format "Verifying %s..."
657 (file-name-nondirectory file)))
658 (message "Verifying %s..." (file-name-nondirectory file))
659 (epg-verify-file context file plain)
660 (message "Verifying %s...done" (file-name-nondirectory file))
661 (if (epg-context-result-for context 'verify)
662 (epa-display-info (epg-verify-result-to-string
663 (epg-context-result-for context 'verify))))))
665 (defun epa--read-signature-type ()
668 (message "Signature type (n,c,d,?) ")
673 (setq type 'detached))
675 (with-output-to-temp-buffer "*Help*"
677 (set-buffer standard-output)
679 n - Create a normal signature
680 c - Create a cleartext signature
681 d - Create a detached signature
685 (setq type 'normal))))))
688 (defun epa-sign-file (file signers mode)
689 "Sign FILE by SIGNERS keys selected."
691 (let ((verbose current-prefix-arg))
692 (list (expand-file-name (read-file-name "File: "))
694 (epa-select-keys (epg-make-context epa-protocol)
695 "Select keys for signing.
696 If no one is selected, default secret key is used. "
699 (epa--read-signature-type)
701 (let ((signature (concat file
702 (if (eq epa-protocol 'OpenPGP)
705 '(nil t normal detached))))
707 (if (memq mode '(t detached))
710 (if (memq mode '(t detached))
713 (context (epg-make-context epa-protocol)))
714 (epg-context-set-armor context epa-armor)
715 (epg-context-set-textmode context epa-textmode)
716 (epg-context-set-signers context signers)
717 (epg-context-set-passphrase-callback context
718 #'epa-passphrase-callback-function)
719 (epg-context-set-progress-callback context
720 #'epa-progress-callback-function
721 (format "Signing %s..."
722 (file-name-nondirectory file)))
723 (message "Signing %s..." (file-name-nondirectory file))
724 (epg-sign-file context file signature mode)
725 (message "Signing %s...wrote %s" (file-name-nondirectory file)
726 (file-name-nondirectory signature))))
729 (defun epa-encrypt-file (file recipients)
730 "Encrypt FILE for RECIPIENTS."
732 (list (expand-file-name (read-file-name "File: "))
733 (epa-select-keys (epg-make-context epa-protocol)
734 "Select recipients for encryption.
735 If no one is selected, symmetric encryption will be performed. ")))
736 (let ((cipher (concat file (if (eq epa-protocol 'OpenPGP)
737 (if epa-armor ".asc" ".gpg")
739 (context (epg-make-context epa-protocol)))
740 (epg-context-set-armor context epa-armor)
741 (epg-context-set-textmode context epa-textmode)
742 (epg-context-set-passphrase-callback context
743 #'epa-passphrase-callback-function)
744 (epg-context-set-progress-callback context
745 #'epa-progress-callback-function
746 (format "Encrypting %s..."
747 (file-name-nondirectory file)))
748 (message "Encrypting %s..." (file-name-nondirectory file))
749 (epg-encrypt-file context file recipients cipher)
750 (message "Encrypting %s...wrote %s" (file-name-nondirectory file)
751 (file-name-nondirectory cipher))))
754 (defun epa-decrypt-region (start end)
755 "Decrypt the current region between START and END.
757 Don't use this command in Lisp programs!"
760 (let ((context (epg-make-context epa-protocol))
762 (epg-context-set-passphrase-callback context
763 #'epa-passphrase-callback-function)
764 (epg-context-set-progress-callback context
765 #'epa-progress-callback-function
767 (message "Decrypting...")
768 (setq plain (epg-decrypt-string context (buffer-substring start end)))
769 (message "Decrypting...done")
770 (setq plain (epa--decode-coding-string
772 (or coding-system-for-read
773 (get-text-property start 'epa-coding-system-used))))
774 (if (y-or-n-p "Replace the original text? ")
775 (let ((inhibit-read-only t)
777 (delete-region start end)
780 (with-output-to-temp-buffer "*Temp*"
781 (set-buffer standard-output)
784 (if (epg-context-result-for context 'verify)
785 (epa-display-info (epg-verify-result-to-string
786 (epg-context-result-for context 'verify)))))))
788 (defun epa--find-coding-system-for-mime-charset (mime-charset)
789 (if (featurep 'xemacs)
790 (if (fboundp 'find-coding-system)
791 (find-coding-system mime-charset))
792 (let ((pointer (coding-system-list)))
794 (eq (coding-system-get (car pointer) 'mime-charset)
796 (setq pointer (cdr pointer)))
800 (defun epa-decrypt-armor-in-region (start end)
801 "Decrypt OpenPGP armors in the current region between START and END.
803 Don't use this command in Lisp programs!"
807 (narrow-to-region start end)
809 (let (armor-start armor-end)
810 (while (re-search-forward "-----BEGIN PGP MESSAGE-----$" nil t)
811 (setq armor-start (match-beginning 0)
812 armor-end (re-search-forward "^-----END PGP MESSAGE-----$"
815 (error "No armor tail"))
816 (goto-char armor-start)
817 (let ((coding-system-for-read
818 (or coding-system-for-read
819 (if (re-search-forward "^Charset: \\(.*\\)" armor-end t)
820 (epa--find-coding-system-for-mime-charset
821 (intern (downcase (match-string 1))))))))
822 (goto-char armor-end)
823 (epa-decrypt-region armor-start armor-end)))))))
826 (defun epa-verify-region (start end)
827 "Verify the current region between START and END.
829 Don't use this command in Lisp programs!"
831 (let ((context (epg-make-context epa-protocol))
833 (epg-context-set-progress-callback context
834 #'epa-progress-callback-function
836 (setq plain (epg-verify-string
838 (epa--encode-coding-string
839 (buffer-substring start end)
840 (or coding-system-for-write
841 (get-text-property start
842 'epa-coding-system-used)))))
843 (if (y-or-n-p "Replace the original text? ")
844 (let ((inhibit-read-only t)
846 (delete-region start end)
849 (with-output-to-temp-buffer "*Temp*"
850 (set-buffer standard-output)
853 (if (epg-context-result-for context 'verify)
854 (epa-display-info (epg-verify-result-to-string
855 (epg-context-result-for context 'verify))))))
858 (defun epa-verify-cleartext-in-region (start end)
859 "Verify OpenPGP cleartext signed messages in the current region
860 between START and END.
862 Don't use this command in Lisp programs!"
866 (narrow-to-region start end)
868 (let (cleartext-start cleartext-end)
869 (while (re-search-forward "-----BEGIN PGP SIGNED MESSAGE-----$"
871 (setq cleartext-start (match-beginning 0))
872 (unless (re-search-forward "^-----BEGIN PGP SIGNATURE-----$"
874 (error "Invalid cleartext signed message"))
875 (setq cleartext-end (re-search-forward
876 "^-----END PGP SIGNATURE-----$"
878 (unless cleartext-end
879 (error "No cleartext tail"))
880 (epa-verify-region cleartext-start cleartext-end))))))
883 (if (fboundp 'select-safe-coding-system)
884 (defalias 'epa--select-safe-coding-system 'select-safe-coding-system)
885 (defun epa--select-safe-coding-system (from to)
886 buffer-file-coding-system)))
889 (defun epa-sign-region (start end signers mode)
890 "Sign the current region between START and END by SIGNERS keys selected.
892 Don't use this command in Lisp programs!"
894 (let ((verbose current-prefix-arg))
895 (setq epa-last-coding-system-specified
896 (or coding-system-for-write
897 (epa--select-safe-coding-system
898 (region-beginning) (region-end))))
899 (list (region-beginning) (region-end)
901 (epa-select-keys (epg-make-context epa-protocol)
902 "Select keys for signing.
903 If no one is selected, default secret key is used. "
906 (epa--read-signature-type)
909 (let ((context (epg-make-context epa-protocol))
911 ;;(epg-context-set-armor context epa-armor)
912 (epg-context-set-armor context t)
913 ;;(epg-context-set-textmode context epa-textmode)
914 (epg-context-set-textmode context t)
915 (epg-context-set-signers context signers)
916 (epg-context-set-passphrase-callback context
917 #'epa-passphrase-callback-function)
918 (epg-context-set-progress-callback context
919 #'epa-progress-callback-function
921 (message "Signing...")
922 (setq signature (epg-sign-string context
923 (epa--encode-coding-string
924 (buffer-substring start end)
925 epa-last-coding-system-specified)
927 (message "Signing...done")
928 (delete-region start end)
930 (add-text-properties (point)
932 (insert (epa--decode-coding-string
934 (or coding-system-for-read
935 epa-last-coding-system-specified)))
937 (list 'epa-coding-system-used
938 epa-last-coding-system-specified
945 (if (fboundp 'derived-mode-p)
946 (defalias 'epa--derived-mode-p 'derived-mode-p)
947 (defun epa--derived-mode-p (&rest modes)
948 "Non-nil if the current major mode is derived from one of MODES.
949 Uses the `derived-mode-parent' property of the symbol to trace backwards."
950 (let ((parent major-mode))
951 (while (and (not (memq parent modes))
952 (setq parent (get parent 'derived-mode-parent))))
956 (defun epa-encrypt-region (start end recipients sign signers)
957 "Encrypt the current region between START and END for RECIPIENTS.
959 Don't use this command in Lisp programs!"
961 (let ((verbose current-prefix-arg)
962 (context (epg-make-context epa-protocol))
964 (setq epa-last-coding-system-specified
965 (or coding-system-for-write
966 (epa--select-safe-coding-system
967 (region-beginning) (region-end))))
968 (list (region-beginning) (region-end)
969 (epa-select-keys context
970 "Select recipients for encryption.
971 If no one is selected, symmetric encryption will be performed. ")
972 (setq sign (if verbose (y-or-n-p "Sign? ")))
974 (epa-select-keys context
975 "Select keys for signing. ")))))
977 (let ((context (epg-make-context epa-protocol))
979 ;;(epg-context-set-armor context epa-armor)
980 (epg-context-set-armor context t)
981 ;;(epg-context-set-textmode context epa-textmode)
982 (epg-context-set-textmode context t)
984 (epg-context-set-signers context signers))
985 (epg-context-set-passphrase-callback context
986 #'epa-passphrase-callback-function)
987 (epg-context-set-progress-callback context
988 #'epa-progress-callback-function
990 (message "Encrypting...")
991 (setq cipher (epg-encrypt-string context
992 (epa--encode-coding-string
993 (buffer-substring start end)
994 epa-last-coding-system-specified)
997 (message "Encrypting...done")
998 (delete-region start end)
1000 (add-text-properties (point)
1004 (list 'epa-coding-system-used
1005 epa-last-coding-system-specified
1012 (defun epa-delete-keys (keys &optional allow-secret)
1013 "Delete selected KEYS.
1015 Don't use this command in Lisp programs!"
1017 (let ((keys (epa--marked-keys)))
1019 (error "No keys selected"))
1021 (eq (nth 1 epa-list-keys-arguments) t))))
1022 (let ((context (epg-make-context epa-protocol)))
1023 (message "Deleting...")
1024 (epg-delete-keys context keys allow-secret)
1025 (message "Deleting...done")
1026 (apply #'epa-list-keys epa-list-keys-arguments)))
1029 (defun epa-import-keys (file)
1030 "Import keys from FILE.
1032 Don't use this command in Lisp programs!"
1033 (interactive "fFile: ")
1034 (setq file (expand-file-name file))
1035 (let ((context (epg-make-context epa-protocol)))
1036 (message "Importing %s..." (file-name-nondirectory file))
1039 (epg-import-keys-from-file context file)
1040 (message "Importing %s...done" (file-name-nondirectory file)))
1042 (message "Importing %s...failed" (file-name-nondirectory file))))
1043 (if (epg-context-result-for context 'import)
1044 (epa-display-info (epg-import-result-to-string
1045 (epg-context-result-for context 'import))))
1046 (if (eq major-mode 'epa-key-list-mode)
1047 (apply #'epa-list-keys epa-list-keys-arguments))))
1050 (defun epa-import-keys-region (start end)
1051 "Import keys from the region.
1053 Don't use this command in Lisp programs!"
1055 (let ((context (epg-make-context epa-protocol)))
1056 (message "Importing...")
1059 (epg-import-keys-from-string context (buffer-substring start end))
1060 (message "Importing...done"))
1062 (message "Importing...failed")))
1063 (if (epg-context-result-for context 'import)
1064 (epa-display-info (epg-import-result-to-string
1065 (epg-context-result-for context 'import))))))
1068 (defun epa-import-armor-in-region (start end)
1069 "Import keys in the OpenPGP armor format in the current region
1070 between START and END.
1072 Don't use this command in Lisp programs!"
1076 (narrow-to-region start end)
1078 (let (armor-start armor-end)
1079 (while (re-search-forward
1080 "-----BEGIN \\(PGP \\(PUBLIC\\|PRIVATE\\) KEY BLOCK\\)-----$"
1082 (setq armor-start (match-beginning 0)
1083 armor-end (re-search-forward
1084 (concat "^-----END " (match-string 1) "-----$")
1087 (error "No armor tail"))
1088 (epa-import-keys-region armor-start armor-end))))))
1091 (defun epa-export-keys (keys file)
1092 "Export selected KEYS to FILE.
1094 Don't use this command in Lisp programs!"
1096 (let ((keys (epa--marked-keys))
1099 (error "No keys selected"))
1102 (concat (epg-sub-key-id (car (epg-key-sub-key-list (car keys))))
1103 (if epa-armor ".asc" ".gpg"))
1108 (concat "To file (default "
1109 (file-name-nondirectory default-name)
1111 (file-name-directory default-name)
1113 (let ((context (epg-make-context epa-protocol)))
1114 (epg-context-set-armor context epa-armor)
1115 (message "Exporting to %s..." (file-name-nondirectory file))
1116 (epg-export-keys-to-file context keys file)
1117 (message "Exporting to %s...done" (file-name-nondirectory file))))
1120 (defun epa-insert-keys (keys)
1121 "Insert selected KEYS after the point.
1123 Don't use this command in Lisp programs!"
1125 (list (epa-select-keys (epg-make-context epa-protocol)
1126 "Select keys to export. ")))
1127 (let ((context (epg-make-context epa-protocol)))
1128 ;;(epg-context-set-armor context epa-armor)
1129 (epg-context-set-armor context t)
1130 (insert (epg-export-keys-to-string context keys))))
1133 (defun epa-sign-keys (keys &optional local)
1134 "Sign selected KEYS.
1135 If a prefix-arg is specified, the signature is marked as non exportable.
1137 Don't use this command in Lisp programs!"
1139 (let ((keys (epa--marked-keys)))
1141 (error "No keys selected"))
1142 (list keys current-prefix-arg)))
1143 (let ((context (epg-make-context epa-protocol)))
1144 (epg-context-set-passphrase-callback context
1145 #'epa-passphrase-callback-function)
1146 (epg-context-set-progress-callback context
1147 #'epa-progress-callback-function
1149 (message "Signing keys...")
1150 (epg-sign-keys context keys local)
1151 (message "Signing keys...done")))
1152 (make-obsolete 'epa-sign-keys "Do not use.")
1156 ;;; epa.el ends here