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)))
427 (defun epa--select-keys (prompt keys)
429 (unless (and epa-keys-buffer
430 (buffer-live-p epa-keys-buffer))
431 (setq epa-keys-buffer (generate-new-buffer "*Keys*")))
432 (set-buffer epa-keys-buffer)
434 (let ((inhibit-read-only t)
438 (substitute-command-keys "\
439 - `\\[epa-mark]' to mark a key on the line
440 - `\\[epa-unmark]' to unmark a key on the line\n"))
442 :notify (lambda (&rest ignore) (abort-recursive-edit))
444 (substitute-command-keys
445 "Click here or \\[abort-recursive-edit] to cancel")
448 :notify (lambda (&rest ignore) (exit-recursive-edit))
450 (substitute-command-keys
451 "Click here or \\[exit-recursive-edit] to finish")
454 (epa--insert-keys keys)
456 (set-keymap-parent (current-local-map) widget-keymap)
457 (setq epa-exit-buffer-function #'abort-recursive-edit)
458 (goto-char (point-min))
459 (pop-to-buffer (current-buffer)))
464 (if (get-buffer-window epa-keys-buffer)
465 (delete-window (get-buffer-window epa-keys-buffer)))
466 (kill-buffer epa-keys-buffer))))
469 (defun epa-select-keys (context prompt &optional names secret)
470 "Display a user's keyring and ask him to select keys.
471 CONTEXT is an epg-context.
472 PROMPT is a string to prompt with.
473 NAMES is a list of strings to be matched with keys. If it is nil, all
475 If SECRET is non-nil, list secret keys instead of public keys."
476 (let ((keys (epg-list-keys context names secret)))
477 (if (> (length keys) 1)
478 (epa--select-keys prompt keys)
481 (defun epa--format-fingerprint-1 (fingerprint unit-size block-size)
485 (goto-char (point-min))
487 (goto-char (+ (point) unit-size))
489 (setq unit (1+ unit))
490 (insert (if (= (% unit block-size) 0) " " " ")))
493 (defun epa--format-fingerprint (fingerprint)
495 (if (= (length fingerprint) 40)
496 ;; 1234 5678 9ABC DEF0 1234 5678 9ABC DEF0 1234 5678
497 (epa--format-fingerprint-1 fingerprint 4 5)
498 ;; 12 34 56 78 9A BC DE F0 12 34 56 78 9A BC DE F0
499 (epa--format-fingerprint-1 fingerprint 2 8))))
501 (defun epa--show-key (key)
502 (let* ((primary-sub-key (car (epg-key-sub-key-list key)))
503 (entry (assoc (epg-sub-key-id primary-sub-key)
504 epa-key-buffer-alist))
505 (inhibit-read-only t)
509 (setq entry (cons (epg-sub-key-id primary-sub-key) nil)
510 epa-key-buffer-alist (cons entry epa-key-buffer-alist)))
511 (unless (and (cdr entry)
512 (buffer-live-p (cdr entry)))
513 (setcdr entry (generate-new-buffer
514 (format "*Key*%s" (epg-sub-key-id primary-sub-key)))))
515 (set-buffer (cdr entry))
517 (make-local-variable 'epa-key)
520 (setq pointer (epg-key-user-id-list key))
524 (if (epg-user-id-validity (car pointer))
526 (car (rassq (epg-user-id-validity (car pointer))
527 epg-key-validity-alist)))
530 (if (stringp (epg-user-id-string (car pointer)))
531 (epg-user-id-string (car pointer))
532 (epg-decode-dn (epg-user-id-string (car pointer))))
534 (setq pointer (cdr pointer)))
535 (setq pointer (epg-key-sub-key-list key))
538 (if (epg-sub-key-validity (car pointer))
540 (car (rassq (epg-sub-key-validity (car pointer))
541 epg-key-validity-alist)))
544 (epg-sub-key-id (car pointer))
547 (epg-sub-key-length (car pointer)))
549 (cdr (assq (epg-sub-key-algorithm (car pointer))
550 epg-pubkey-algorithm-alist))
552 (format-time-string "%Y-%m-%d"
553 (epg-sub-key-creation-time (car pointer)))
554 (if (epg-sub-key-expiration-time (car pointer))
555 (format "\n\tExpires: %s"
556 (format-time-string "%Y-%m-%d"
557 (epg-sub-key-expiration-time
561 (mapconcat #'symbol-name
562 (epg-sub-key-capability (car pointer))
565 (epa--format-fingerprint (epg-sub-key-fingerprint (car pointer)))
567 (setq pointer (cdr pointer)))
568 (goto-char (point-min))
569 (pop-to-buffer (current-buffer))))
571 (defun epa-display-info (info)
572 (if epa-popup-info-window
573 (save-selected-window
574 (unless (and epa-info-buffer (buffer-live-p epa-info-buffer))
575 (setq epa-info-buffer (generate-new-buffer "*Info*")))
576 (if (get-buffer-window epa-info-buffer)
577 (delete-window (get-buffer-window epa-info-buffer)))
579 (set-buffer epa-info-buffer)
580 (let ((inhibit-read-only t)
585 (goto-char (point-min)))
586 (if (> (window-height)
587 epa-info-window-height)
588 (set-window-buffer (split-window nil (- (window-height)
589 epa-info-window-height))
591 (pop-to-buffer epa-info-buffer)
592 (if (> (window-height) epa-info-window-height)
593 (shrink-window (- (window-height) epa-info-window-height)))))
594 (message "%s" info)))
596 (defun epa-display-verify-result (verify-result)
597 (epa-display-info (epg-verify-result-to-string verify-result)))
598 (make-obsolete 'epa-display-verify-result 'epa-display-info)
600 (defun epa-passphrase-callback-function (context key-id handback)
602 (read-passwd "Passphrase for symmetric encryption: "
603 (eq (epg-context-operation context) 'encrypt))
606 "Passphrase for PIN: "
607 (let ((entry (assoc key-id epg-user-id-alist)))
609 (format "Passphrase for %s %s: " key-id (cdr entry))
610 (format "Passphrase for %s: " key-id)))))))
612 (defun epa-progress-callback-function (context what char current total
614 (message "%s%d%% (%d/%d)" (or handback
616 (if (> total 0) (floor (* (/ current (float total)) 100)) 0)
620 (defun epa-decrypt-file (file)
622 (interactive "fFile: ")
623 (setq file (expand-file-name file))
624 (let* ((default-name (file-name-sans-extension file))
625 (plain (expand-file-name
627 (concat "To file (default "
628 (file-name-nondirectory default-name)
630 (file-name-directory default-name)
632 (context (epg-make-context epa-protocol)))
633 (epg-context-set-passphrase-callback context
634 #'epa-passphrase-callback-function)
635 (epg-context-set-progress-callback context
636 #'epa-progress-callback-function
637 (format "Decrypting %s..."
638 (file-name-nondirectory file)))
639 (message "Decrypting %s..." (file-name-nondirectory file))
640 (epg-decrypt-file context file plain)
641 (message "Decrypting %s...wrote %s" (file-name-nondirectory file)
642 (file-name-nondirectory plain))
643 (if (epg-context-result-for context 'verify)
644 (epa-display-info (epg-verify-result-to-string
645 (epg-context-result-for context 'verify))))))
648 (defun epa-verify-file (file)
650 (interactive "fFile: ")
651 (setq file (expand-file-name file))
652 (let* ((context (epg-make-context epa-protocol))
653 (plain (if (equal (file-name-extension file) "sig")
654 (file-name-sans-extension file))))
655 (epg-context-set-progress-callback context
656 #'epa-progress-callback-function
657 (format "Verifying %s..."
658 (file-name-nondirectory file)))
659 (message "Verifying %s..." (file-name-nondirectory file))
660 (epg-verify-file context file plain)
661 (message "Verifying %s...done" (file-name-nondirectory file))
662 (if (epg-context-result-for context 'verify)
663 (epa-display-info (epg-verify-result-to-string
664 (epg-context-result-for context 'verify))))))
666 (defun epa--read-signature-type ()
669 (message "Signature type (n,c,d,?) ")
674 (setq type 'detached))
676 (with-output-to-temp-buffer "*Help*"
678 (set-buffer standard-output)
680 n - Create a normal signature
681 c - Create a cleartext signature
682 d - Create a detached signature
686 (setq type 'normal))))))
689 (defun epa-sign-file (file signers mode)
690 "Sign FILE by SIGNERS keys selected."
692 (let ((verbose current-prefix-arg))
693 (list (expand-file-name (read-file-name "File: "))
695 (epa-select-keys (epg-make-context epa-protocol)
696 "Select keys for signing.
697 If no one is selected, default secret key is used. "
700 (epa--read-signature-type)
702 (let ((signature (concat file
703 (if (eq epa-protocol 'OpenPGP)
706 '(nil t normal detached))))
708 (if (memq mode '(t detached))
711 (if (memq mode '(t detached))
714 (context (epg-make-context epa-protocol)))
715 (epg-context-set-armor context epa-armor)
716 (epg-context-set-textmode context epa-textmode)
717 (epg-context-set-signers context signers)
718 (epg-context-set-passphrase-callback context
719 #'epa-passphrase-callback-function)
720 (epg-context-set-progress-callback context
721 #'epa-progress-callback-function
722 (format "Signing %s..."
723 (file-name-nondirectory file)))
724 (message "Signing %s..." (file-name-nondirectory file))
725 (epg-sign-file context file signature mode)
726 (message "Signing %s...wrote %s" (file-name-nondirectory file)
727 (file-name-nondirectory signature))))
730 (defun epa-encrypt-file (file recipients)
731 "Encrypt FILE for RECIPIENTS."
733 (list (expand-file-name (read-file-name "File: "))
734 (epa-select-keys (epg-make-context epa-protocol)
735 "Select recipients for encryption.
736 If no one is selected, symmetric encryption will be performed. ")))
737 (let ((cipher (concat file (if (eq epa-protocol 'OpenPGP)
738 (if epa-armor ".asc" ".gpg")
740 (context (epg-make-context epa-protocol)))
741 (epg-context-set-armor context epa-armor)
742 (epg-context-set-textmode context epa-textmode)
743 (epg-context-set-passphrase-callback context
744 #'epa-passphrase-callback-function)
745 (epg-context-set-progress-callback context
746 #'epa-progress-callback-function
747 (format "Encrypting %s..."
748 (file-name-nondirectory file)))
749 (message "Encrypting %s..." (file-name-nondirectory file))
750 (epg-encrypt-file context file recipients cipher)
751 (message "Encrypting %s...wrote %s" (file-name-nondirectory file)
752 (file-name-nondirectory cipher))))
755 (defun epa-decrypt-region (start end)
756 "Decrypt the current region between START and END.
758 Don't use this command in Lisp programs!"
761 (let ((context (epg-make-context epa-protocol))
763 (epg-context-set-passphrase-callback context
764 #'epa-passphrase-callback-function)
765 (epg-context-set-progress-callback context
766 #'epa-progress-callback-function
768 (message "Decrypting...")
769 (setq plain (epg-decrypt-string context (buffer-substring start end)))
770 (message "Decrypting...done")
771 (setq plain (epa--decode-coding-string
773 (or coding-system-for-read
774 (get-text-property start 'epa-coding-system-used))))
775 (if (y-or-n-p "Replace the original text? ")
776 (let ((inhibit-read-only t)
778 (delete-region start end)
781 (with-output-to-temp-buffer "*Temp*"
782 (set-buffer standard-output)
785 (if (epg-context-result-for context 'verify)
786 (epa-display-info (epg-verify-result-to-string
787 (epg-context-result-for context 'verify)))))))
789 (defun epa--find-coding-system-for-mime-charset (mime-charset)
790 (if (featurep 'xemacs)
791 (if (fboundp 'find-coding-system)
792 (find-coding-system mime-charset))
793 (let ((pointer (coding-system-list)))
795 (eq (coding-system-get (car pointer) 'mime-charset)
797 (setq pointer (cdr pointer)))
801 (defun epa-decrypt-armor-in-region (start end)
802 "Decrypt OpenPGP armors in the current region between START and END.
804 Don't use this command in Lisp programs!"
808 (narrow-to-region start end)
810 (let (armor-start armor-end)
811 (while (re-search-forward "-----BEGIN PGP MESSAGE-----$" nil t)
812 (setq armor-start (match-beginning 0)
813 armor-end (re-search-forward "^-----END PGP MESSAGE-----$"
816 (error "No armor tail"))
817 (goto-char armor-start)
818 (let ((coding-system-for-read
819 (or coding-system-for-read
820 (if (re-search-forward "^Charset: \\(.*\\)" armor-end t)
821 (epa--find-coding-system-for-mime-charset
822 (intern (downcase (match-string 1))))))))
823 (goto-char armor-end)
824 (epa-decrypt-region armor-start armor-end)))))))
827 (defun epa-verify-region (start end)
828 "Verify the current region between START and END.
830 Don't use this command in Lisp programs!"
832 (let ((context (epg-make-context epa-protocol))
834 (epg-context-set-progress-callback context
835 #'epa-progress-callback-function
837 (setq plain (epg-verify-string
839 (epa--encode-coding-string
840 (buffer-substring start end)
841 (or coding-system-for-write
842 (get-text-property start
843 'epa-coding-system-used)))))
844 (if (y-or-n-p "Replace the original text? ")
845 (let ((inhibit-read-only t)
847 (delete-region start end)
850 (with-output-to-temp-buffer "*Temp*"
851 (set-buffer standard-output)
854 (if (epg-context-result-for context 'verify)
855 (epa-display-info (epg-verify-result-to-string
856 (epg-context-result-for context 'verify))))))
859 (defun epa-verify-cleartext-in-region (start end)
860 "Verify OpenPGP cleartext signed messages in the current region
861 between START and END.
863 Don't use this command in Lisp programs!"
867 (narrow-to-region start end)
869 (let (cleartext-start cleartext-end)
870 (while (re-search-forward "-----BEGIN PGP SIGNED MESSAGE-----$"
872 (setq cleartext-start (match-beginning 0))
873 (unless (re-search-forward "^-----BEGIN PGP SIGNATURE-----$"
875 (error "Invalid cleartext signed message"))
876 (setq cleartext-end (re-search-forward
877 "^-----END PGP SIGNATURE-----$"
879 (unless cleartext-end
880 (error "No cleartext tail"))
881 (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
944 (if (fboundp 'derived-mode-p)
945 (defalias 'epa--derived-mode-p 'derived-mode-p)
946 (defun epa--derived-mode-p (&rest modes)
947 "Non-nil if the current major mode is derived from one of MODES.
948 Uses the `derived-mode-parent' property of the symbol to trace backwards."
949 (let ((parent major-mode))
950 (while (and (not (memq parent modes))
951 (setq parent (get parent 'derived-mode-parent))))
955 (defun epa-encrypt-region (start end recipients sign signers)
956 "Encrypt the current region between START and END for RECIPIENTS.
958 Don't use this command in Lisp programs!"
960 (let ((verbose current-prefix-arg)
961 (context (epg-make-context epa-protocol))
963 (setq epa-last-coding-system-specified
964 (or coding-system-for-write
965 (epa--select-safe-coding-system
966 (region-beginning) (region-end))))
967 (list (region-beginning) (region-end)
968 (epa-select-keys context
969 "Select recipients for encryption.
970 If no one is selected, symmetric encryption will be performed. ")
971 (setq sign (if verbose (y-or-n-p "Sign? ")))
973 (epa-select-keys context
974 "Select keys for signing. ")))))
976 (let ((context (epg-make-context epa-protocol))
978 ;;(epg-context-set-armor context epa-armor)
979 (epg-context-set-armor context t)
980 ;;(epg-context-set-textmode context epa-textmode)
981 (epg-context-set-textmode context t)
983 (epg-context-set-signers context signers))
984 (epg-context-set-passphrase-callback context
985 #'epa-passphrase-callback-function)
986 (epg-context-set-progress-callback context
987 #'epa-progress-callback-function
989 (message "Encrypting...")
990 (setq cipher (epg-encrypt-string context
991 (epa--encode-coding-string
992 (buffer-substring start end)
993 epa-last-coding-system-specified)
996 (message "Encrypting...done")
997 (delete-region start end)
999 (add-text-properties (point)
1003 (list 'epa-coding-system-used
1004 epa-last-coding-system-specified
1011 (defun epa-delete-keys (keys &optional allow-secret)
1012 "Delete selected KEYS.
1014 Don't use this command in Lisp programs!"
1016 (let ((keys (epa--marked-keys)))
1018 (error "No keys selected"))
1020 (eq (nth 1 epa-list-keys-arguments) t))))
1021 (let ((context (epg-make-context epa-protocol)))
1022 (message "Deleting...")
1023 (epg-delete-keys context keys allow-secret)
1024 (message "Deleting...done")
1025 (apply #'epa-list-keys epa-list-keys-arguments)))
1028 (defun epa-import-keys (file)
1029 "Import keys from FILE.
1031 Don't use this command in Lisp programs!"
1032 (interactive "fFile: ")
1033 (setq file (expand-file-name file))
1034 (let ((context (epg-make-context epa-protocol)))
1035 (message "Importing %s..." (file-name-nondirectory file))
1038 (epg-import-keys-from-file context file)
1039 (message "Importing %s...done" (file-name-nondirectory file)))
1041 (message "Importing %s...failed" (file-name-nondirectory file))))
1042 (if (epg-context-result-for context 'import)
1043 (epa-display-info (epg-import-result-to-string
1044 (epg-context-result-for context 'import))))
1045 (if (eq major-mode 'epa-key-list-mode)
1046 (apply #'epa-list-keys epa-list-keys-arguments))))
1049 (defun epa-import-keys-region (start end)
1050 "Import keys from the region.
1052 Don't use this command in Lisp programs!"
1054 (let ((context (epg-make-context epa-protocol)))
1055 (message "Importing...")
1058 (epg-import-keys-from-string context (buffer-substring start end))
1059 (message "Importing...done"))
1061 (message "Importing...failed")))
1062 (if (epg-context-result-for context 'import)
1063 (epa-display-info (epg-import-result-to-string
1064 (epg-context-result-for context 'import))))))
1067 (defun epa-import-armor-in-region (start end)
1068 "Import keys in the OpenPGP armor format in the current region
1069 between START and END.
1071 Don't use this command in Lisp programs!"
1075 (narrow-to-region start end)
1077 (let (armor-start armor-end)
1078 (while (re-search-forward
1079 "-----BEGIN \\(PGP \\(PUBLIC\\|PRIVATE\\) KEY BLOCK\\)-----$"
1081 (setq armor-start (match-beginning 0)
1082 armor-end (re-search-forward
1083 (concat "^-----END " (match-string 1) "-----$")
1086 (error "No armor tail"))
1087 (epa-import-keys-region armor-start armor-end))))))
1090 (defun epa-export-keys (keys file)
1091 "Export selected KEYS to FILE.
1093 Don't use this command in Lisp programs!"
1095 (let ((keys (epa--marked-keys))
1098 (error "No keys selected"))
1101 (concat (epg-sub-key-id (car (epg-key-sub-key-list (car keys))))
1102 (if epa-armor ".asc" ".gpg"))
1107 (concat "To file (default "
1108 (file-name-nondirectory default-name)
1110 (file-name-directory default-name)
1112 (let ((context (epg-make-context epa-protocol)))
1113 (epg-context-set-armor context epa-armor)
1114 (message "Exporting to %s..." (file-name-nondirectory file))
1115 (epg-export-keys-to-file context keys file)
1116 (message "Exporting to %s...done" (file-name-nondirectory file))))
1119 (defun epa-insert-keys (keys)
1120 "Insert selected KEYS after the point.
1122 Don't use this command in Lisp programs!"
1124 (list (epa-select-keys (epg-make-context epa-protocol)
1125 "Select keys to export. ")))
1126 (let ((context (epg-make-context epa-protocol)))
1127 ;;(epg-context-set-armor context epa-armor)
1128 (epg-context-set-armor context t)
1129 (insert (epg-export-keys-to-string context keys))))
1132 (defun epa-sign-keys (keys &optional local)
1133 "Sign selected KEYS.
1134 If a prefix-arg is specified, the signature is marked as non exportable.
1136 Don't use this command in Lisp programs!"
1138 (let ((keys (epa--marked-keys)))
1140 (error "No keys selected"))
1141 (list keys current-prefix-arg)))
1142 (let ((context (epg-make-context epa-protocol)))
1143 (epg-context-set-passphrase-callback context
1144 #'epa-passphrase-callback-function)
1145 (epg-context-set-progress-callback context
1146 #'epa-progress-callback-function
1148 (message "Signing keys...")
1149 (epg-sign-keys context keys local)
1150 (message "Signing keys...done")))
1151 (make-obsolete 'epa-sign-keys "Do not use.")
1155 ;;; epa.el ends here