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))))))
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-key (&optional arg)
305 "Mark a key on the current line.
306 If ARG is non-nil, unmark the key."
308 (let ((inhibit-read-only t)
312 (unless (get-text-property (point) 'epa-key)
313 (error "No key on this line"))
314 (setq properties (text-properties-at (point)))
316 (insert (if arg " " "*"))
317 (set-text-properties (1- (point)) (point) properties)
320 (defun epa-unmark-key (&optional arg)
321 "Unmark a key on the current line.
322 If ARG is non-nil, mark the key."
324 (epa-mark-key (not arg)))
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))
332 (defun epa--insert-keys (keys)
335 (narrow-to-region (point) (point))
340 (add-text-properties point (point)
341 (list 'epa-key (car keys)
346 (widget-create 'epa-key :value (car keys))
348 (setq keys (cdr keys))))
349 (add-text-properties (point-min) (point-max)
350 (list 'epa-list-keys t
356 (defun epa--list-keys (name secret)
357 (unless (and epa-keys-buffer
358 (buffer-live-p epa-keys-buffer))
359 (setq epa-keys-buffer (generate-new-buffer "*Keys*")))
360 (set-buffer epa-keys-buffer)
362 (let ((inhibit-read-only t)
365 (context (epg-make-context epa-protocol)))
366 (unless (get-text-property point 'epa-list-keys)
367 (setq point (next-single-property-change point 'epa-list-keys)))
370 (or (next-single-property-change point 'epa-list-keys)
373 (epa--insert-keys (epg-list-keys context name secret))
375 (set-keymap-parent (current-local-map) widget-keymap))
376 (make-local-variable 'epa-list-keys-arguments)
377 (setq epa-list-keys-arguments (list name secret))
378 (goto-char (point-min))
379 (pop-to-buffer (current-buffer)))
382 (defun epa-list-keys (&optional name)
383 "List all keys matched with NAME from the public keyring."
385 (if current-prefix-arg
386 (let ((name (read-string "Pattern: "
387 (if epa-list-keys-arguments
388 (car epa-list-keys-arguments)))))
389 (list (if (equal name "") nil name)))
391 (epa--list-keys name nil))
394 (defun epa-list-secret-keys (&optional name)
395 "List all keys matched with NAME from the private keyring."
397 (if current-prefix-arg
398 (let ((name (read-string "Pattern: "
399 (if epa-list-keys-arguments
400 (car epa-list-keys-arguments)))))
401 (list (if (equal name "") nil name)))
403 (epa--list-keys name t))
405 (defun epa--key-list-revert-buffer (&optional ignore-auto noconfirm)
406 (apply #'epa--list-keys epa-list-keys-arguments))
408 (defun epa--marked-keys ()
410 (set-buffer epa-keys-buffer)
411 (goto-char (point-min))
413 (while (re-search-forward "^\\*" nil t)
414 (if (setq key (get-text-property (match-beginning 0)
416 (setq keys (cons key keys))))
420 (let ((key (get-text-property (point) 'epa-key)))
424 (defun epa--select-keys (prompt keys)
426 (unless (and epa-keys-buffer
427 (buffer-live-p epa-keys-buffer))
428 (setq epa-keys-buffer (generate-new-buffer "*Keys*")))
429 (set-buffer epa-keys-buffer)
431 (let ((inhibit-read-only t)
435 (substitute-command-keys "\
436 - `\\[epa-mark-key]' to mark a key on the line
437 - `\\[epa-unmark-key]' to unmark a key on the line\n"))
439 :notify (lambda (&rest ignore) (abort-recursive-edit))
441 (substitute-command-keys
442 "Click here or \\[abort-recursive-edit] to cancel")
445 :notify (lambda (&rest ignore) (exit-recursive-edit))
447 (substitute-command-keys
448 "Click here or \\[exit-recursive-edit] to finish")
451 (epa--insert-keys keys)
453 (set-keymap-parent (current-local-map) widget-keymap)
454 (setq epa-exit-buffer-function #'abort-recursive-edit)
455 (goto-char (point-min))
456 (pop-to-buffer (current-buffer)))
461 (if (get-buffer-window epa-keys-buffer)
462 (delete-window (get-buffer-window epa-keys-buffer)))
463 (kill-buffer epa-keys-buffer))))
466 (defun epa-select-keys (context prompt &optional names secret)
467 "Display a user's keyring and ask him to select keys.
468 CONTEXT is an epg-context.
469 PROMPT is a string to prompt with.
470 NAMES is a list of strings to be matched with keys. If it is nil, all
472 If SECRET is non-nil, list secret keys instead of public keys."
473 (let ((keys (epg-list-keys context names secret)))
474 (if (> (length keys) 1)
475 (epa--select-keys prompt keys)
478 (defun epa--format-fingerprint-1 (fingerprint unit-size block-size)
482 (goto-char (point-min))
484 (goto-char (+ (point) unit-size))
486 (setq unit (1+ unit))
487 (insert (if (= (% unit block-size) 0) " " " ")))
490 (defun epa--format-fingerprint (fingerprint)
492 (if (= (length fingerprint) 40)
493 ;; 1234 5678 9ABC DEF0 1234 5678 9ABC DEF0 1234 5678
494 (epa--format-fingerprint-1 fingerprint 4 5)
495 ;; 12 34 56 78 9A BC DE F0 12 34 56 78 9A BC DE F0
496 (epa--format-fingerprint-1 fingerprint 2 8))))
498 (defun epa--show-key (key)
499 (let* ((primary-sub-key (car (epg-key-sub-key-list key)))
500 (entry (assoc (epg-sub-key-id primary-sub-key)
501 epa-key-buffer-alist))
502 (inhibit-read-only t)
506 (setq entry (cons (epg-sub-key-id primary-sub-key) nil)
507 epa-key-buffer-alist (cons entry epa-key-buffer-alist)))
508 (unless (and (cdr entry)
509 (buffer-live-p (cdr entry)))
510 (setcdr entry (generate-new-buffer
511 (format "*Key*%s" (epg-sub-key-id primary-sub-key)))))
512 (set-buffer (cdr entry))
514 (make-local-variable 'epa-key)
517 (setq pointer (epg-key-user-id-list key))
521 (if (epg-user-id-validity (car pointer))
523 (car (rassq (epg-user-id-validity (car pointer))
524 epg-key-validity-alist)))
527 (if (stringp (epg-user-id-string (car pointer)))
528 (epg-user-id-string (car pointer))
529 (epg-decode-dn (epg-user-id-string (car pointer))))
531 (setq pointer (cdr pointer)))
532 (setq pointer (epg-key-sub-key-list key))
535 (if (epg-sub-key-validity (car pointer))
537 (car (rassq (epg-sub-key-validity (car pointer))
538 epg-key-validity-alist)))
541 (epg-sub-key-id (car pointer))
544 (epg-sub-key-length (car pointer)))
546 (cdr (assq (epg-sub-key-algorithm (car pointer))
547 epg-pubkey-algorithm-alist))
549 (format-time-string "%Y-%m-%d"
550 (epg-sub-key-creation-time (car pointer)))
551 (if (epg-sub-key-expiration-time (car pointer))
552 (format "\n\tExpires: %s"
553 (format-time-string "%Y-%m-%d"
554 (epg-sub-key-expiration-time
558 (mapconcat #'symbol-name
559 (epg-sub-key-capability (car pointer))
562 (epa--format-fingerprint (epg-sub-key-fingerprint (car pointer)))
564 (setq pointer (cdr pointer)))
565 (goto-char (point-min))
566 (pop-to-buffer (current-buffer))))
568 (defun epa-display-info (info)
569 (if epa-popup-info-window
570 (save-selected-window
571 (unless (and epa-info-buffer (buffer-live-p epa-info-buffer))
572 (setq epa-info-buffer (generate-new-buffer "*Info*")))
573 (if (get-buffer-window epa-info-buffer)
574 (delete-window (get-buffer-window epa-info-buffer)))
576 (set-buffer epa-info-buffer)
577 (let ((inhibit-read-only t)
582 (goto-char (point-min)))
583 (if (> (window-height)
584 epa-info-window-height)
585 (set-window-buffer (split-window nil (- (window-height)
586 epa-info-window-height))
588 (pop-to-buffer epa-info-buffer)
589 (if (> (window-height) epa-info-window-height)
590 (shrink-window (- (window-height) epa-info-window-height)))))
591 (message "%s" info)))
593 (defun epa-display-verify-result (verify-result)
594 (epa-display-info (epg-verify-result-to-string verify-result)))
595 (make-obsolete 'epa-display-verify-result 'epa-display-info)
597 (defun epa-passphrase-callback-function (context key-id handback)
599 (read-passwd "Passphrase for symmetric encryption: "
600 (eq (epg-context-operation context) 'encrypt))
603 "Passphrase for PIN: "
604 (let ((entry (assoc key-id epg-user-id-alist)))
606 (format "Passphrase for %s %s: " key-id (cdr entry))
607 (format "Passphrase for %s: " key-id)))))))
609 (defun epa-progress-callback-function (context what char current total
611 (message "%s%d%% (%d/%d)" (or handback
613 (if (> total 0) (floor (* (/ current (float total)) 100)) 0)
617 (defun epa-decrypt-file (file)
619 (interactive "fFile: ")
620 (setq file (expand-file-name file))
621 (let* ((default-name (file-name-sans-extension file))
622 (plain (expand-file-name
624 (concat "To file (default "
625 (file-name-nondirectory default-name)
627 (file-name-directory default-name)
629 (context (epg-make-context epa-protocol)))
630 (epg-context-set-passphrase-callback context
631 #'epa-passphrase-callback-function)
632 (epg-context-set-progress-callback context
633 #'epa-progress-callback-function
634 (format "Decrypting %s..."
635 (file-name-nondirectory file)))
636 (message "Decrypting %s..." (file-name-nondirectory file))
637 (epg-decrypt-file context file plain)
638 (message "Decrypting %s...wrote %s" (file-name-nondirectory file)
639 (file-name-nondirectory plain))
640 (if (epg-context-result-for context 'verify)
641 (epa-display-info (epg-verify-result-to-string
642 (epg-context-result-for context 'verify))))))
645 (defun epa-verify-file (file)
647 (interactive "fFile: ")
648 (setq file (expand-file-name file))
649 (let* ((context (epg-make-context epa-protocol))
650 (plain (if (equal (file-name-extension file) "sig")
651 (file-name-sans-extension file))))
652 (epg-context-set-progress-callback context
653 #'epa-progress-callback-function
654 (format "Verifying %s..."
655 (file-name-nondirectory file)))
656 (message "Verifying %s..." (file-name-nondirectory file))
657 (epg-verify-file context file plain)
658 (message "Verifying %s...done" (file-name-nondirectory file))
659 (if (epg-context-result-for context 'verify)
660 (epa-display-info (epg-verify-result-to-string
661 (epg-context-result-for context 'verify))))))
663 (defun epa--read-signature-type ()
666 (message "Signature type (n,c,d,?) ")
671 (setq type 'detached))
673 (with-output-to-temp-buffer "*Help*"
675 (set-buffer standard-output)
677 n - Create a normal signature
678 c - Create a cleartext signature
679 d - Create a detached signature
683 (setq type 'normal))))))
686 (defun epa-sign-file (file signers mode)
687 "Sign FILE by SIGNERS keys selected."
689 (let ((verbose current-prefix-arg))
690 (list (expand-file-name (read-file-name "File: "))
692 (epa-select-keys (epg-make-context epa-protocol)
693 "Select keys for signing.
694 If no one is selected, default secret key is used. "
697 (epa--read-signature-type)
699 (let ((signature (concat file
700 (if (eq epa-protocol 'OpenPGP)
703 '(nil t normal detached))))
705 (if (memq mode '(t detached))
708 (if (memq mode '(t detached))
711 (context (epg-make-context epa-protocol)))
712 (epg-context-set-armor context epa-armor)
713 (epg-context-set-textmode context epa-textmode)
714 (epg-context-set-signers context signers)
715 (epg-context-set-passphrase-callback context
716 #'epa-passphrase-callback-function)
717 (epg-context-set-progress-callback context
718 #'epa-progress-callback-function
719 (format "Signing %s..."
720 (file-name-nondirectory file)))
721 (message "Signing %s..." (file-name-nondirectory file))
722 (epg-sign-file context file signature mode)
723 (message "Signing %s...wrote %s" (file-name-nondirectory file)
724 (file-name-nondirectory signature))))
727 (defun epa-encrypt-file (file recipients)
728 "Encrypt FILE for RECIPIENTS."
730 (list (expand-file-name (read-file-name "File: "))
731 (epa-select-keys (epg-make-context epa-protocol)
732 "Select recipients for encryption.
733 If no one is selected, symmetric encryption will be performed. ")))
734 (let ((cipher (concat file (if (eq epa-protocol 'OpenPGP)
735 (if epa-armor ".asc" ".gpg")
737 (context (epg-make-context epa-protocol)))
738 (epg-context-set-armor context epa-armor)
739 (epg-context-set-textmode context epa-textmode)
740 (epg-context-set-passphrase-callback context
741 #'epa-passphrase-callback-function)
742 (epg-context-set-progress-callback context
743 #'epa-progress-callback-function
744 (format "Encrypting %s..."
745 (file-name-nondirectory file)))
746 (message "Encrypting %s..." (file-name-nondirectory file))
747 (epg-encrypt-file context file recipients cipher)
748 (message "Encrypting %s...wrote %s" (file-name-nondirectory file)
749 (file-name-nondirectory cipher))))
752 (defun epa-decrypt-region (start end)
753 "Decrypt the current region between START and END.
755 Don't use this command in Lisp programs!"
758 (let ((context (epg-make-context epa-protocol))
760 (epg-context-set-passphrase-callback context
761 #'epa-passphrase-callback-function)
762 (epg-context-set-progress-callback context
763 #'epa-progress-callback-function
765 (message "Decrypting...")
766 (setq plain (epg-decrypt-string context (buffer-substring start end)))
767 (message "Decrypting...done")
768 (setq plain (epa--decode-coding-string
770 (or coding-system-for-read
771 (get-text-property start 'epa-coding-system-used))))
772 (if (y-or-n-p "Replace the original text? ")
773 (let ((inhibit-read-only t)
775 (delete-region start end)
778 (with-output-to-temp-buffer "*Temp*"
779 (set-buffer standard-output)
782 (if (epg-context-result-for context 'verify)
783 (epa-display-info (epg-verify-result-to-string
784 (epg-context-result-for context 'verify)))))))
786 (defun epa--find-coding-system-for-mime-charset (mime-charset)
787 (if (featurep 'xemacs)
788 (if (fboundp 'find-coding-system)
789 (find-coding-system mime-charset))
790 (let ((pointer (coding-system-list)))
792 (eq (coding-system-get (car pointer) 'mime-charset)
794 (setq pointer (cdr pointer)))
798 (defun epa-decrypt-armor-in-region (start end)
799 "Decrypt OpenPGP armors in the current region between START and END.
801 Don't use this command in Lisp programs!"
805 (narrow-to-region start end)
807 (let (armor-start armor-end)
808 (while (re-search-forward "-----BEGIN PGP MESSAGE-----$" nil t)
809 (setq armor-start (match-beginning 0)
810 armor-end (re-search-forward "^-----END PGP MESSAGE-----$"
813 (error "No armor tail"))
814 (goto-char armor-start)
815 (let ((coding-system-for-read
816 (or coding-system-for-read
817 (if (re-search-forward "^Charset: \\(.*\\)" armor-end t)
818 (epa--find-coding-system-for-mime-charset
819 (intern (downcase (match-string 1))))))))
820 (goto-char armor-end)
821 (epa-decrypt-region armor-start armor-end)))))))
824 (defun epa-verify-region (start end)
825 "Verify the current region between START and END.
827 Don't use this command in Lisp programs!"
829 (let ((context (epg-make-context epa-protocol))
831 (epg-context-set-progress-callback context
832 #'epa-progress-callback-function
834 (setq plain (epg-verify-string
836 (epa--encode-coding-string
837 (buffer-substring start end)
838 (or coding-system-for-write
839 (get-text-property start
840 'epa-coding-system-used)))))
841 (if (y-or-n-p "Replace the original text? ")
842 (let ((inhibit-read-only t)
844 (delete-region start end)
847 (with-output-to-temp-buffer "*Temp*"
848 (set-buffer standard-output)
851 (if (epg-context-result-for context 'verify)
852 (epa-display-info (epg-verify-result-to-string
853 (epg-context-result-for context 'verify))))))
856 (defun epa-verify-cleartext-in-region (start end)
857 "Verify OpenPGP cleartext signed messages in the current region
858 between START and END.
860 Don't use this command in Lisp programs!"
864 (narrow-to-region start end)
866 (let (cleartext-start cleartext-end)
867 (while (re-search-forward "-----BEGIN PGP SIGNED MESSAGE-----$"
869 (setq cleartext-start (match-beginning 0))
870 (unless (re-search-forward "^-----BEGIN PGP SIGNATURE-----$"
872 (error "Invalid cleartext signed message"))
873 (setq cleartext-end (re-search-forward
874 "^-----END PGP SIGNATURE-----$"
876 (unless cleartext-end
877 (error "No cleartext tail"))
878 (epa-verify-region cleartext-start cleartext-end))))))
880 (if (fboundp 'select-safe-coding-system)
881 (defalias 'epa--select-safe-coding-system 'select-safe-coding-system)
882 (defun epa--select-safe-coding-system (from to)
883 buffer-file-coding-system))
886 (defun epa-sign-region (start end signers mode)
887 "Sign the current region between START and END by SIGNERS keys selected.
889 Don't use this command in Lisp programs!"
891 (let ((verbose current-prefix-arg))
892 (setq epa-last-coding-system-specified
893 (or coding-system-for-write
894 (epa--select-safe-coding-system
895 (region-beginning) (region-end))))
896 (list (region-beginning) (region-end)
898 (epa-select-keys (epg-make-context epa-protocol)
899 "Select keys for signing.
900 If no one is selected, default secret key is used. "
903 (epa--read-signature-type)
906 (let ((context (epg-make-context epa-protocol))
908 ;;(epg-context-set-armor context epa-armor)
909 (epg-context-set-armor context t)
910 ;;(epg-context-set-textmode context epa-textmode)
911 (epg-context-set-textmode context t)
912 (epg-context-set-signers context signers)
913 (epg-context-set-passphrase-callback context
914 #'epa-passphrase-callback-function)
915 (epg-context-set-progress-callback context
916 #'epa-progress-callback-function
918 (message "Signing...")
919 (setq signature (epg-sign-string context
920 (epa--encode-coding-string
921 (buffer-substring start end)
922 epa-last-coding-system-specified)
924 (message "Signing...done")
925 (delete-region start end)
927 (add-text-properties (point)
929 (insert (epa--decode-coding-string
931 (or coding-system-for-read
932 epa-last-coding-system-specified)))
934 (list 'epa-coding-system-used
935 epa-last-coding-system-specified
941 (if (fboundp 'derived-mode-p)
942 (defalias 'epa--derived-mode-p 'derived-mode-p)
943 (defun epa--derived-mode-p (&rest modes)
944 "Non-nil if the current major mode is derived from one of MODES.
945 Uses the `derived-mode-parent' property of the symbol to trace backwards."
946 (let ((parent major-mode))
947 (while (and (not (memq parent modes))
948 (setq parent (get parent 'derived-mode-parent))))
952 (defun epa-encrypt-region (start end recipients sign signers)
953 "Encrypt the current region between START and END for RECIPIENTS.
955 Don't use this command in Lisp programs!"
957 (let ((verbose current-prefix-arg)
958 (context (epg-make-context epa-protocol))
960 (setq epa-last-coding-system-specified
961 (or coding-system-for-write
962 (epa--select-safe-coding-system
963 (region-beginning) (region-end))))
964 (list (region-beginning) (region-end)
965 (epa-select-keys context
966 "Select recipients for encryption.
967 If no one is selected, symmetric encryption will be performed. ")
968 (setq sign (if verbose (y-or-n-p "Sign? ")))
970 (epa-select-keys context
971 "Select keys for signing. ")))))
973 (let ((context (epg-make-context epa-protocol))
975 ;;(epg-context-set-armor context epa-armor)
976 (epg-context-set-armor context t)
977 ;;(epg-context-set-textmode context epa-textmode)
978 (epg-context-set-textmode context t)
980 (epg-context-set-signers context signers))
981 (epg-context-set-passphrase-callback context
982 #'epa-passphrase-callback-function)
983 (epg-context-set-progress-callback context
984 #'epa-progress-callback-function
986 (message "Encrypting...")
987 (setq cipher (epg-encrypt-string context
988 (epa--encode-coding-string
989 (buffer-substring start end)
990 epa-last-coding-system-specified)
993 (message "Encrypting...done")
994 (delete-region start end)
996 (add-text-properties (point)
1000 (list 'epa-coding-system-used
1001 epa-last-coding-system-specified
1008 (defun epa-delete-keys (keys &optional allow-secret)
1009 "Delete selected KEYS.
1011 Don't use this command in Lisp programs!"
1013 (let ((keys (epa--marked-keys)))
1015 (error "No keys selected"))
1017 (eq (nth 1 epa-list-keys-arguments) t))))
1018 (let ((context (epg-make-context epa-protocol)))
1019 (message "Deleting...")
1020 (epg-delete-keys context keys allow-secret)
1021 (message "Deleting...done")
1022 (apply #'epa-list-keys epa-list-keys-arguments)))
1025 (defun epa-import-keys (file)
1026 "Import keys from FILE.
1028 Don't use this command in Lisp programs!"
1029 (interactive "fFile: ")
1030 (setq file (expand-file-name file))
1031 (let ((context (epg-make-context epa-protocol)))
1032 (message "Importing %s..." (file-name-nondirectory file))
1035 (epg-import-keys-from-file context file)
1036 (message "Importing %s...done" (file-name-nondirectory file)))
1038 (message "Importing %s...failed" (file-name-nondirectory file))))
1039 (if (epg-context-result-for context 'import)
1040 (epa-display-info (epg-import-result-to-string
1041 (epg-context-result-for context 'import))))
1042 (if (eq major-mode 'epa-key-list-mode)
1043 (apply #'epa-list-keys epa-list-keys-arguments))))
1046 (defun epa-import-keys-region (start end)
1047 "Import keys from the region.
1049 Don't use this command in Lisp programs!"
1051 (let ((context (epg-make-context epa-protocol)))
1052 (message "Importing...")
1055 (epg-import-keys-from-string context (buffer-substring start end))
1056 (message "Importing...done"))
1058 (message "Importing...failed")))
1059 (if (epg-context-result-for context 'import)
1060 (epa-display-info (epg-import-result-to-string
1061 (epg-context-result-for context 'import))))))
1064 (defun epa-import-armor-in-region (start end)
1065 "Import keys in the OpenPGP armor format in the current region
1066 between START and END.
1068 Don't use this command in Lisp programs!"
1072 (narrow-to-region start end)
1074 (let (armor-start armor-end)
1075 (while (re-search-forward
1076 "-----BEGIN \\(PGP \\(PUBLIC\\|PRIVATE\\) KEY BLOCK\\)-----$"
1078 (setq armor-start (match-beginning 0)
1079 armor-end (re-search-forward
1080 (concat "^-----END " (match-string 1) "-----$")
1083 (error "No armor tail"))
1084 (epa-import-keys-region armor-start armor-end))))))
1087 (defun epa-export-keys (keys file)
1088 "Export selected KEYS to FILE.
1090 Don't use this command in Lisp programs!"
1092 (let ((keys (epa--marked-keys))
1095 (error "No keys selected"))
1098 (concat (epg-sub-key-id (car (epg-key-sub-key-list (car keys))))
1099 (if epa-armor ".asc" ".gpg"))
1104 (concat "To file (default "
1105 (file-name-nondirectory default-name)
1107 (file-name-directory default-name)
1109 (let ((context (epg-make-context epa-protocol)))
1110 (epg-context-set-armor context epa-armor)
1111 (message "Exporting to %s..." (file-name-nondirectory file))
1112 (epg-export-keys-to-file context keys file)
1113 (message "Exporting to %s...done" (file-name-nondirectory file))))
1116 (defun epa-insert-keys (keys)
1117 "Insert selected KEYS after the point.
1119 Don't use this command in Lisp programs!"
1121 (list (epa-select-keys (epg-make-context epa-protocol)
1122 "Select keys to export. ")))
1123 (let ((context (epg-make-context epa-protocol)))
1124 ;;(epg-context-set-armor context epa-armor)
1125 (epg-context-set-armor context t)
1126 (insert (epg-export-keys-to-string context keys))))
1129 (defun epa-sign-keys (keys &optional local)
1130 "Sign selected KEYS.
1131 If a prefix-arg is specified, the signature is marked as non exportable.
1133 Don't use this command in Lisp programs!"
1135 (let ((keys (epa--marked-keys)))
1137 (error "No keys selected"))
1138 (list keys current-prefix-arg)))
1139 (let ((context (epg-make-context epa-protocol)))
1140 (epg-context-set-passphrase-callback context
1141 #'epa-passphrase-callback-function)
1142 (epg-context-set-progress-callback context
1143 #'epa-progress-callback-function
1145 (message "Signing keys...")
1146 (epg-sign-keys context keys local)
1147 (message "Signing keys...done")))
1148 (make-obsolete 'epa-sign-keys "Do not use.")
1152 ;;; epa.el ends here