1 ;;; epa.el --- the EasyPG Assistant
2 ;; Copyright (C) 2006 Daiki Ueno
4 ;; Author: Daiki Ueno <ueno@unixuser.org>
5 ;; Keywords: PGP, GnuPG
7 ;; This file is part of EasyPG.
9 ;; This program is free software; you can redistribute it and/or modify
10 ;; it under the terms of the GNU General Public License as published by
11 ;; the Free Software Foundation; either version 2, or (at your option)
14 ;; This program is distributed in the hope that it will be useful,
15 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 ;; GNU General Public License for more details.
19 ;; You should have received a copy of the GNU General Public License
20 ;; along with GNU Emacs; see the file COPYING. If not, write to the
21 ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
22 ;; Boston, MA 02110-1301, USA.
29 (eval-when-compile (require 'wid-edit))
32 "The EasyPG Assistant"
35 (defcustom epa-protocol 'OpenPGP
36 "The default protocol."
37 :type '(choice (const :tag "OpenPGP" OpenPGP)
38 (const :tag "CMS" CMS))
41 (defcustom epa-armor nil
42 "If non-nil, epa commands create ASCII armored output."
46 (defcustom epa-textmode nil
47 "If non-nil, epa commands treat input files as text."
51 (defcustom epa-popup-info-window t
52 "If non-nil, status information from epa commands is displayed on
57 (defcustom epa-info-window-height 5
58 "Number of lines used to display status information."
62 (defgroup epa-faces nil
66 (defface epa-validity-high-face
67 '((((class color) (background dark))
68 (:foreground "PaleTurquoise" :bold t))
71 "Face used for displaying the high validity."
73 (defvar epa-validity-high-face 'epa-validity-high-face)
75 (defface epa-validity-medium-face
76 '((((class color) (background dark))
77 (:foreground "PaleTurquoise" :italic t))
80 "Face used for displaying the medium validity."
82 (defvar epa-validity-medium-face 'epa-validity-medium-face)
84 (defface epa-validity-low-face
87 "Face used for displaying the low validity."
89 (defvar epa-validity-low-face 'epa-validity-low-face)
91 (defface epa-validity-disabled-face
93 (:italic t :inverse-video t)))
94 "Face used for displaying the disabled validity."
96 (defvar epa-validity-disabled-face 'epa-validity-disabled-face)
98 (defface epa-string-face
101 (:foreground "lightyellow"))
104 (:foreground "blue4"))
107 "Face used for displaying the string."
109 (defvar epa-string-face 'epa-string-face)
111 (defface epa-mark-face
112 '((((class color) (background dark))
113 (:foreground "orange" :bold t))
115 (:foreground "red" :bold t)))
116 "Face used for displaying the high validity."
118 (defvar epa-mark-face 'epa-mark-face)
120 (defface epa-field-name-face
121 '((((class color) (background dark))
122 (:foreground "PaleTurquoise" :bold t))
124 "Face for the name of the attribute field."
126 (defvar epa-field-name-face 'epa-field-name-face)
128 (defface epa-field-body-face
129 '((((class color) (background dark))
130 (:foreground "turquoise" :italic t))
132 "Face for the body of the attribute field."
134 (defvar epa-field-body-face 'epa-field-body-face)
136 (defcustom epa-validity-face-alist
137 '((unknown . epa-validity-disabled-face)
138 (invalid . epa-validity-disabled-face)
139 (disabled . epa-validity-disabled-face)
140 (revoked . epa-validity-disabled-face)
141 (expired . epa-validity-disabled-face)
142 (none . epa-validity-low-face)
143 (undefined . epa-validity-low-face)
144 (never . epa-validity-low-face)
145 (marginal . epa-validity-medium-face)
146 (full . epa-validity-high-face)
147 (ultimate . epa-validity-high-face))
148 "An alist mapping validity values to faces."
152 (defcustom epa-font-lock-keywords
155 ("^\t\\([^\t:]+:\\)[ \t]*\\(.*\\)$"
156 (1 epa-field-name-face)
157 (2 epa-field-body-face)))
158 "Default expressions to addon in epa-mode."
159 :type '(repeat (list string))
162 (defconst epa-pubkey-algorithm-letter-alist
170 (defvar epa-keys-buffer nil)
171 (defvar epa-key-buffer-alist nil)
173 (defvar epa-list-keys-arguments nil)
174 (defvar epa-info-buffer nil)
175 (defvar epa-last-coding-system-specified nil)
177 (defvar epa-keys-mode-map
178 (let ((keymap (make-sparse-keymap)))
179 (define-key keymap "m" 'epa-mark)
180 (define-key keymap "u" 'epa-unmark)
181 (define-key keymap "d" 'epa-decrypt-file)
182 (define-key keymap "v" 'epa-verify-file)
183 (define-key keymap "s" 'epa-sign-file)
184 (define-key keymap "e" 'epa-encrypt-file)
185 (define-key keymap "r" 'epa-delete-keys)
186 (define-key keymap "i" 'epa-import-keys)
187 (define-key keymap "o" 'epa-export-keys)
188 (define-key keymap "g" 'epa-list-keys)
189 (define-key keymap "n" 'next-line)
190 (define-key keymap "p" 'previous-line)
191 (define-key keymap " " 'scroll-up)
192 (define-key keymap [delete] 'scroll-down)
193 (define-key keymap "q" 'epa-exit-buffer)
196 (defvar epa-key-mode-map
197 (let ((keymap (make-sparse-keymap)))
198 (define-key keymap "q" 'bury-buffer)
201 (defvar epa-info-mode-map
202 (let ((keymap (make-sparse-keymap)))
203 (define-key keymap "q" 'delete-window)
206 (defvar epa-exit-buffer-function #'bury-buffer)
208 (define-widget 'epa-key 'push-button
209 "Button for representing a epg-key object."
211 :button-face-get 'epa--key-widget-button-face-get
212 :value-create 'epa--key-widget-value-create
213 :action 'epa--key-widget-action
214 :help-echo 'epa--key-widget-help-echo)
216 (defun epa--key-widget-action (widget &optional event)
217 (epa--show-key (widget-get widget :value)))
219 (defun epa--key-widget-value-create (widget)
220 (let* ((key (widget-get widget :value))
221 (primary-sub-key (car (epg-key-sub-key-list key)))
222 (primary-user-id (car (epg-key-user-id-list key))))
223 (insert (format "%c "
224 (if (epg-sub-key-validity primary-sub-key)
225 (car (rassq (epg-sub-key-validity primary-sub-key)
226 epg-key-validity-alist))
228 (epg-sub-key-id primary-sub-key)
231 (if (stringp (epg-user-id-string primary-user-id))
232 (epg-user-id-string primary-user-id)
233 (epg-decode-dn (epg-user-id-string primary-user-id)))
236 (defun epa--key-widget-button-face-get (widget)
237 (let ((validity (epg-sub-key-validity (car (epg-key-sub-key-list
238 (widget-get widget :value))))))
240 (cdr (assq validity epa-validity-face-alist))
243 (defun epa--key-widget-help-echo (widget)
245 (epg-sub-key-id (car (epg-key-sub-key-list
246 (widget-get widget :value))))))
248 (if (fboundp 'encode-coding-string)
249 (defalias 'epa--encode-coding-string 'encode-coding-string)
250 (defalias 'epa--encode-coding-string 'identity))
252 (if (fboundp 'decode-coding-string)
253 (defalias 'epa--decode-coding-string 'decode-coding-string)
254 (defalias 'epa--decode-coding-string 'identity))
256 (defun epa-keys-mode ()
257 "Major mode for `epa-list-keys'."
258 (kill-all-local-variables)
259 (buffer-disable-undo)
260 (setq major-mode 'epa-keys-mode
264 (use-local-map epa-keys-mode-map)
265 (make-local-variable 'font-lock-defaults)
266 (setq font-lock-defaults '(epa-font-lock-keywords t))
267 ;; In XEmacs, auto-initialization of font-lock is not effective
268 ;; if buffer-file-name is not set.
269 (font-lock-set-defaults)
270 (make-local-variable 'epa-exit-buffer-function)
271 (run-hooks 'epa-keys-mode-hook))
273 (defun epa-key-mode ()
274 "Major mode for a key description."
275 (kill-all-local-variables)
276 (buffer-disable-undo)
277 (setq major-mode 'epa-key-mode
281 (use-local-map epa-key-mode-map)
282 (make-local-variable 'font-lock-defaults)
283 (setq font-lock-defaults '(epa-font-lock-keywords t))
284 ;; In XEmacs, auto-initialization of font-lock is not effective
285 ;; if buffer-file-name is not set.
286 (font-lock-set-defaults)
287 (make-local-variable 'epa-exit-buffer-function)
288 (run-hooks 'epa-key-mode-hook))
290 (defun epa-info-mode ()
291 "Major mode for `epa-info-buffer'."
292 (kill-all-local-variables)
293 (buffer-disable-undo)
294 (setq major-mode 'epa-info-mode
298 (use-local-map epa-info-mode-map)
299 (run-hooks 'epa-info-mode-hook))
301 (defun epa-mark (&optional arg)
302 "Mark the current line.
303 If ARG is non-nil, unmark the current line."
305 (let ((inhibit-read-only t)
309 (setq properties (text-properties-at (point)))
311 (insert (if arg " " "*"))
312 (set-text-properties (1- (point)) (point) properties)
315 (defun epa-unmark (&optional arg)
316 "Unmark the current line.
317 If ARG is non-nil, mark the current line."
319 (epa-mark (not arg)))
321 (defun epa-toggle-mark ()
322 "Toggle the mark the current line."
324 (epa-mark (eq (char-after (save-excursion (beginning-of-line) (point))) ?*)))
326 (defun epa-exit-buffer ()
327 "Exit the current buffer.
328 `epa-exit-buffer-function' is called if it is set."
330 (funcall epa-exit-buffer-function))
333 (defun epa-list-keys (&optional name mode)
334 "List all keys matched with NAME from the keyring.
335 If MODE is non-nil, it reads the private keyring. Otherwise, it
336 reads the public keyring."
338 (if current-prefix-arg
339 (let ((name (read-string "Pattern: "
340 (if epa-list-keys-arguments
341 (car epa-list-keys-arguments)))))
342 (list (if (equal name "") nil name)
343 (y-or-n-p "Secret keys? ")))
344 (or epa-list-keys-arguments (list nil nil))))
345 (unless (and epa-keys-buffer
346 (buffer-live-p epa-keys-buffer))
347 (setq epa-keys-buffer (generate-new-buffer "*Keys*")))
348 (set-buffer epa-keys-buffer)
349 (let ((inhibit-read-only t)
352 (context (epg-make-context epa-protocol)))
353 (unless (get-text-property point 'epa-list-keys)
354 (setq point (next-single-property-change point 'epa-list-keys)))
357 (or (next-single-property-change point 'epa-list-keys)
360 (epa--insert-keys context name mode)
363 (set-keymap-parent (current-local-map) widget-keymap))
364 (make-local-variable 'epa-list-keys-arguments)
365 (setq epa-list-keys-arguments (list name mode))
366 (goto-char (point-min))
367 (pop-to-buffer (current-buffer)))
369 (defun epa--insert-keys (context name mode)
372 (narrow-to-region (point) (point))
373 (let ((keys (epg-list-keys context name mode))
378 (add-text-properties point (point)
379 (list 'epa-key (car keys)
384 (widget-create 'epa-key :value (car keys))
386 (setq keys (cdr keys))))
387 (add-text-properties (point-min) (point-max)
388 (list 'epa-list-keys t
394 (defun epa--marked-keys ()
396 (set-buffer epa-keys-buffer)
397 (goto-char (point-min))
399 (while (re-search-forward "^\\*" nil t)
400 (if (setq key (get-text-property (match-beginning 0)
402 (setq keys (cons key keys))))
406 (let ((key (get-text-property (point) 'epa-key)))
411 (defun epa-select-keys (context prompt &optional names secret)
412 "Display a user's keyring and ask him to select keys.
413 CONTEXT is an epg-context.
414 PROMPT is a string to prompt with.
415 NAMES is a list of strings to be matched with keys. If it is nil, all
417 If SECRET is non-nil, list secret keys instead of public keys."
419 (unless (and epa-keys-buffer
420 (buffer-live-p epa-keys-buffer))
421 (setq epa-keys-buffer (generate-new-buffer "*Keys*")))
422 (let ((inhibit-read-only t)
424 (set-buffer epa-keys-buffer)
428 :notify (lambda (&rest ignore) (abort-recursive-edit))
430 (substitute-command-keys
431 "Click here or \\[abort-recursive-edit] to cancel")
434 :notify (lambda (&rest ignore) (exit-recursive-edit))
436 (substitute-command-keys
437 "Click here or \\[exit-recursive-edit] to finish")
442 (epa--insert-keys context (car names) secret)
443 (if (get-text-property (point) 'epa-list-keys)
445 (goto-char (point-max))
446 (setq names (cdr names)))
449 (epa--insert-keys context nil secret)
450 (if (get-text-property (point) 'epa-list-keys)
452 (epa--insert-keys context nil nil)))
455 (set-keymap-parent (current-local-map) widget-keymap)
456 (setq epa-exit-buffer-function #'abort-recursive-edit)
457 (goto-char (point-min))
458 (pop-to-buffer (current-buffer)))
463 (if (get-buffer-window epa-keys-buffer)
464 (delete-window (get-buffer-window epa-keys-buffer)))
465 (kill-buffer epa-keys-buffer))))
467 (defun epa--format-fingerprint-1 (fingerprint unit-size block-size)
471 (goto-char (point-min))
473 (goto-char (+ (point) unit-size))
475 (setq unit (1+ unit))
476 (insert (if (= (% unit block-size) 0) " " " ")))
479 (defun epa--format-fingerprint (fingerprint)
481 (if (= (length fingerprint) 40)
482 ;; 1234 5678 9ABC DEF0 1234 5678 9ABC DEF0 1234 5678
483 (epa--format-fingerprint-1 fingerprint 4 5)
484 ;; 12 34 56 78 9A BC DE F0 12 34 56 78 9A BC DE F0
485 (epa--format-fingerprint-1 fingerprint 2 8))))
487 (defun epa--show-key (key)
488 (let* ((primary-sub-key (car (epg-key-sub-key-list key)))
489 (entry (assoc (epg-sub-key-id primary-sub-key)
490 epa-key-buffer-alist))
491 (inhibit-read-only t)
495 (setq entry (cons (epg-sub-key-id primary-sub-key) nil)
496 epa-key-buffer-alist (cons entry epa-key-buffer-alist)))
497 (unless (and (cdr entry)
498 (buffer-live-p (cdr entry)))
499 (setcdr entry (generate-new-buffer
500 (format "*Key*%s" (epg-sub-key-id primary-sub-key)))))
501 (set-buffer (cdr entry))
502 (make-local-variable 'epa-key)
505 (setq pointer (epg-key-user-id-list key))
509 (if (epg-user-id-validity (car pointer))
511 (car (rassq (epg-user-id-validity (car pointer))
512 epg-key-validity-alist)))
515 (if (stringp (epg-user-id-string (car pointer)))
516 (epg-user-id-string (car pointer))
517 (epg-decode-dn (epg-user-id-string (car pointer))))
519 (setq pointer (cdr pointer)))
520 (setq pointer (epg-key-sub-key-list key))
523 (if (epg-sub-key-validity (car pointer))
525 (car (rassq (epg-sub-key-validity (car pointer))
526 epg-key-validity-alist)))
529 (epg-sub-key-id (car pointer))
532 (epg-sub-key-length (car pointer)))
534 (cdr (assq (epg-sub-key-algorithm (car pointer))
535 epg-pubkey-algorithm-alist))
537 (format-time-string "%Y-%m-%d"
538 (epg-sub-key-creation-time (car pointer)))
539 (if (epg-sub-key-expiration-time (car pointer))
540 (format "\n\tExpires: %s"
541 (format-time-string "%Y-%m-%d"
542 (epg-sub-key-expiration-time
546 (mapconcat #'symbol-name
547 (epg-sub-key-capability (car pointer))
550 (epa--format-fingerprint (epg-sub-key-fingerprint (car pointer)))
552 (setq pointer (cdr pointer)))
553 (goto-char (point-min))
554 (pop-to-buffer (current-buffer))
557 (defun epa-display-info (info)
558 (if epa-popup-info-window
559 (save-selected-window
560 (unless epa-info-buffer
561 (setq epa-info-buffer (generate-new-buffer "*Info*")))
563 (set-buffer epa-info-buffer)
564 (let ((inhibit-read-only t)
569 (goto-char (point-min)))
570 (if (> (window-height)
571 epa-info-window-height)
572 (set-window-buffer (split-window nil (- (window-height)
573 epa-info-window-height))
575 (pop-to-buffer epa-info-buffer)
576 (if (> (window-height) epa-info-window-height)
577 (shrink-window (- (window-height) epa-info-window-height)))))
578 (message "%s" info)))
580 (defun epa-display-verify-result (verify-result)
581 (epa-display-info (epg-verify-result-to-string verify-result)))
582 (make-obsolete 'epa-display-verify-result 'epa-display-info)
584 (defun epa-passphrase-callback-function (context key-id handback)
586 (read-passwd "Passphrase for symmetric encryption: "
587 (eq (epg-context-operation context) 'encrypt))
590 "Passphrase for PIN: "
591 (let ((entry (assoc key-id epg-user-id-alist)))
593 (format "Passphrase for %s %s: " key-id (cdr entry))
594 (format "Passphrase for %s: " key-id)))))))
596 (defun epa-progress-callback-function (context what char current total
598 (message "%s: %d%% (%d/%d)" what
599 (if (> total 0) (floor (* (/ current (float total)) 100)) 0)
603 (defun epa-decrypt-file (file)
605 (interactive "fFile: ")
606 (setq file (expand-file-name file))
607 (let* ((default-name (file-name-sans-extension file))
608 (plain (expand-file-name
610 (concat "To file (default "
611 (file-name-nondirectory default-name)
613 (file-name-directory default-name)
615 (context (epg-make-context epa-protocol)))
616 (epg-context-set-passphrase-callback context
617 #'epa-passphrase-callback-function)
618 (epg-context-set-progress-callback context
619 #'epa-progress-callback-function)
620 (message "Decrypting %s..." (file-name-nondirectory file))
621 (epg-decrypt-file context file plain)
622 (message "Decrypting %s...wrote %s" (file-name-nondirectory file)
623 (file-name-nondirectory plain))
624 (if (epg-context-result-for context 'verify)
625 (epa-display-info (epg-verify-result-to-string
626 (epg-context-result-for context 'verify))))))
629 (defun epa-verify-file (file)
631 (interactive "fFile: ")
632 (setq file (expand-file-name file))
633 (let* ((context (epg-make-context epa-protocol))
634 (plain (if (equal (file-name-extension file) "sig")
635 (file-name-sans-extension file))))
636 (epg-context-set-progress-callback context
637 #'epa-progress-callback-function)
638 (message "Verifying %s..." (file-name-nondirectory file))
639 (epg-verify-file context file plain)
640 (message "Verifying %s...done" (file-name-nondirectory file))
641 (if (epg-context-result-for context 'verify)
642 (epa-display-info (epg-verify-result-to-string
643 (epg-context-result-for context 'verify))))))
646 (defun epa-sign-file (file signers mode)
647 "Sign FILE by SIGNERS keys selected."
649 (list (expand-file-name (read-file-name "File: "))
650 (if current-prefix-arg
651 (epa-select-keys (epg-make-context epa-protocol)
652 "Select keys for signing.
653 If no one is selected, default secret key is used. "
655 (if current-prefix-arg
658 (message "Signature type (n,c,d,?) ")
659 (let ((c (read-char)))
661 (throw 'done 'clear))
663 (throw 'done 'detached))
665 (with-output-to-temp-buffer "*Help*"
667 (set-buffer standard-output)
669 n - Create a normal signature
670 c - Create a cleartext signature
671 d - Create a detached signature
675 (throw 'done nil))))))
677 (let ((signature (concat file
678 (if (eq epa-protocol 'OpenPGP)
681 '(nil t normal detached))))
683 (if (memq mode '(t detached))
686 (if (memq mode '(t detached))
689 (context (epg-make-context epa-protocol)))
690 (epg-context-set-armor context epa-armor)
691 (epg-context-set-textmode context epa-textmode)
692 (epg-context-set-signers context signers)
693 (epg-context-set-passphrase-callback context
694 #'epa-passphrase-callback-function)
695 (epg-context-set-progress-callback context
696 #'epa-progress-callback-function)
697 (message "Signing %s..." (file-name-nondirectory file))
698 (epg-sign-file context file signature mode)
699 (message "Signing %s...wrote %s" (file-name-nondirectory file)
700 (file-name-nondirectory signature))))
703 (defun epa-encrypt-file (file recipients)
704 "Encrypt FILE for RECIPIENTS."
706 (list (expand-file-name (read-file-name "File: "))
707 (epa-select-keys (epg-make-context epa-protocol)
708 "Select recipients for encryption.
709 If no one is selected, symmetric encryption will be performed. ")))
710 (let ((cipher (concat file (if (eq epa-protocol 'OpenPGP)
711 (if epa-armor ".asc" ".gpg")
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-passphrase-callback context
717 #'epa-passphrase-callback-function)
718 (epg-context-set-progress-callback context
719 #'epa-progress-callback-function)
720 (message "Encrypting %s..." (file-name-nondirectory file))
721 (epg-encrypt-file context file recipients cipher)
722 (message "Encrypting %s...wrote %s" (file-name-nondirectory file)
723 (file-name-nondirectory cipher))))
726 (defun epa-decrypt-region (start end)
727 "Decrypt the current region between START and END.
729 Don't use this command in Lisp programs!"
732 (let ((context (epg-make-context epa-protocol))
734 (epg-context-set-passphrase-callback context
735 #'epa-passphrase-callback-function)
736 (epg-context-set-progress-callback context
737 #'epa-progress-callback-function)
738 (message "Decrypting...")
739 (setq plain (epg-decrypt-string context (buffer-substring start end)))
740 (message "Decrypting...done")
741 (delete-region start end)
743 (insert (epa--decode-coding-string plain
744 (or coding-system-for-read
746 start 'epa-coding-system-used))))
747 (if (epg-context-result-for context 'verify)
748 (epa-display-info (epg-verify-result-to-string
749 (epg-context-result-for context 'verify)))))))
752 (defun epa-decrypt-armor-in-region (start end)
753 "Decrypt OpenPGP armors in the current region between START and END.
755 Don't use this command in Lisp programs!"
759 (narrow-to-region start end)
761 (let (armor-start armor-end charset coding-system)
762 (while (re-search-forward "-----BEGIN PGP MESSAGE-----$" nil t)
763 (setq armor-start (match-beginning 0)
764 armor-end (re-search-forward "^-----END PGP MESSAGE-----$"
767 (error "No armor tail"))
768 (goto-char armor-start)
769 (if (re-search-forward "^Charset: \\(.*\\)" armor-end t)
770 (setq charset (match-string 1)))
771 (if coding-system-for-read
772 (setq coding-system coding-system-for-read)
774 (setq coding-system (intern (downcase charset)))
775 (setq coding-system 'utf-8)))
776 (let ((coding-system-for-read coding-system))
777 (epa-decrypt-region start end)))))))
779 (if (fboundp 'select-safe-coding-system)
780 (defalias 'epa--select-safe-coding-system 'select-safe-coding-system)
781 (defun epa--select-safe-coding-system (from to)
782 buffer-file-coding-system))
785 (defun epa-verify-region (start end)
786 "Verify the current region between START and END.
788 Don't use this command in Lisp programs!"
790 (let ((context (epg-make-context epa-protocol)))
791 (epg-context-set-progress-callback context
792 #'epa-progress-callback-function)
793 (epg-verify-string context
794 (epa--encode-coding-string
795 (buffer-substring start end)
796 (or coding-system-for-write
797 (get-text-property start
798 'epa-coding-system-used))))
799 (if (epg-context-result-for context 'verify)
800 (epa-display-info (epg-verify-result-to-string
801 (epg-context-result-for context 'verify))))))
804 (defun epa-verify-cleartext-in-region (start end)
805 "Verify OpenPGP cleartext signed messages in the current region
806 between START and END.
808 Don't use this command in Lisp programs!"
812 (narrow-to-region start end)
814 (let (armor-start armor-end)
815 (while (re-search-forward "-----BEGIN PGP SIGNED MESSAGE-----$"
817 (setq armor-start (match-beginning 0))
818 (unless (re-search-forward "^-----BEGIN PGP SIGNATURE-----$"
820 (error "Invalid cleartext signed message"))
821 (setq armor-end (re-search-forward
822 "^-----END PGP SIGNATURE-----$"
825 (error "No armor tail"))
826 (epa-verify-region armor-start armor-end))))))
829 (defun epa-sign-region (start end signers mode)
830 "Sign the current region between START and END by SIGNERS keys selected.
832 Don't use this command in Lisp programs!"
835 (setq epa-last-coding-system-specified
836 (or coding-system-for-write
837 (epa--select-safe-coding-system
838 (region-beginning) (region-end))))
839 (list (region-beginning) (region-end)
840 (if current-prefix-arg
841 (epa-select-keys (epg-make-context epa-protocol)
842 "Select keys for signing.
843 If no one is selected, default secret key is used. "
845 (if current-prefix-arg
848 (message "Signature type (n,c,d,?) ")
849 (let ((c (read-char)))
851 (throw 'done 'clear))
853 (throw 'done 'detached))
855 (with-output-to-temp-buffer "*Help*"
857 (set-buffer standard-output)
859 n - Create a normal signature
860 c - Create a cleartext signature
861 d - Create a detached signature
865 (throw 'done nil))))))
868 (let ((context (epg-make-context epa-protocol))
870 ;;(epg-context-set-armor context epa-armor)
871 (epg-context-set-armor context t)
872 ;;(epg-context-set-textmode context epa-textmode)
873 (epg-context-set-textmode context t)
874 (epg-context-set-signers context signers)
875 (epg-context-set-passphrase-callback context
876 #'epa-passphrase-callback-function)
877 (epg-context-set-progress-callback context
878 #'epa-progress-callback-function)
879 (message "Signing...")
880 (setq signature (epg-sign-string context
881 (epa--encode-coding-string
882 (buffer-substring start end)
883 epa-last-coding-system-specified)
885 (message "Signing...done")
886 (delete-region start end)
887 (add-text-properties (point)
889 (insert (epa--decode-coding-string
891 (or coding-system-for-read
892 epa-last-coding-system-specified)))
894 (list 'epa-coding-system-used
895 epa-last-coding-system-specified
902 (defun epa-encrypt-region (start end recipients)
903 "Encrypt the current region between START and END for RECIPIENTS.
905 Don't use this command in Lisp programs!"
908 (setq epa-last-coding-system-specified
909 (or coding-system-for-write
910 (epa--select-safe-coding-system
911 (region-beginning) (region-end))))
912 (list (region-beginning) (region-end)
913 (epa-select-keys (epg-make-context epa-protocol)
914 "Select recipients for encryption.
915 If no one is selected, symmetric encryption will be performed. "))))
917 (let ((context (epg-make-context epa-protocol))
919 ;;(epg-context-set-armor context epa-armor)
920 (epg-context-set-armor context t)
921 ;;(epg-context-set-textmode context epa-textmode)
922 (epg-context-set-textmode context t)
923 (epg-context-set-passphrase-callback context
924 #'epa-passphrase-callback-function)
925 (epg-context-set-progress-callback context
926 #'epa-progress-callback-function)
927 (message "Encrypting...")
928 (setq cipher (epg-encrypt-string context
929 (epa--encode-coding-string
930 (buffer-substring start end)
931 epa-last-coding-system-specified)
933 (message "Encrypting...done")
934 (delete-region start end)
935 (add-text-properties (point)
939 (list 'epa-coding-system-used
940 epa-last-coding-system-specified
947 (defun epa-delete-keys (keys &optional allow-secret)
948 "Delete selected KEYS.
950 Don't use this command in Lisp programs!"
952 (let ((keys (epa--marked-keys)))
954 (error "No keys selected"))
956 (eq (nth 1 epa-list-keys-arguments) t))))
957 (let ((context (epg-make-context epa-protocol)))
958 (message "Deleting...")
959 (epg-delete-keys context keys allow-secret)
960 (message "Deleting...done")
961 (apply #'epa-list-keys epa-list-keys-arguments)))
964 (defun epa-import-keys (file)
965 "Import keys from FILE.
967 Don't use this command in Lisp programs!"
968 (interactive "fFile: ")
969 (setq file (expand-file-name file))
970 (let ((context (epg-make-context epa-protocol)))
971 (message "Importing %s..." (file-name-nondirectory file))
974 (epg-import-keys-from-file context file)
975 (message "Importing %s...done" (file-name-nondirectory file)))
977 (message "Importing %s...failed" (file-name-nondirectory file))))
978 (if (epg-context-result-for context 'import)
979 (epa-display-info (epg-import-result-to-string
980 (epg-context-result-for context 'import))))
981 (if (eq major-mode 'epa-keys-mode)
982 (apply #'epa-list-keys epa-list-keys-arguments))))
985 (defun epa-import-keys-region (start end)
986 "Import keys from the region.
988 Don't use this command in Lisp programs!"
990 (let ((context (epg-make-context epa-protocol)))
991 (message "Importing...")
994 (epg-import-keys-from-string context (buffer-substring start end))
995 (message "Importing...done"))
997 (message "Importing...failed")))
998 (if (epg-context-result-for context 'import)
999 (epa-display-info (epg-import-result-to-string
1000 (epg-context-result-for context 'import))))))
1003 (defun epa-export-keys (keys file)
1004 "Export selected KEYS to FILE.
1006 Don't use this command in Lisp programs!"
1008 (let ((keys (epa--marked-keys))
1011 (error "No keys selected"))
1014 (concat (epg-sub-key-id (car (epg-key-sub-key-list (car keys))))
1015 (if epa-armor ".asc" ".gpg"))
1020 (concat "To file (default "
1021 (file-name-nondirectory default-name)
1023 (file-name-directory default-name)
1025 (let ((context (epg-make-context epa-protocol)))
1026 (epg-context-set-armor context epa-armor)
1027 (message "Exporting to %s..." (file-name-nondirectory file))
1028 (epg-export-keys-to-file context keys file)
1029 (message "Exporting to %s...done" (file-name-nondirectory file))))
1032 (defun epa-insert-keys (keys)
1033 "Insert selected KEYS after the point.
1035 Don't use this command in Lisp programs!"
1037 (list (epa-select-keys (epg-make-context epa-protocol)
1038 "Select keys to export. ")))
1039 (let ((context (epg-make-context epa-protocol)))
1040 ;;(epg-context-set-armor context epa-armor)
1041 (epg-context-set-armor context t)
1042 (insert (epg-export-keys-to-string context keys))))
1045 (defun epa-sign-keys (keys &optional local)
1046 "Sign selected KEYS.
1047 If a prefix-arg is specified, the signature is marked as non exportable.
1049 Don't use this command in Lisp programs!"
1051 (let ((keys (epa--marked-keys)))
1053 (error "No keys selected"))
1054 (list keys current-prefix-arg)))
1055 (let ((context (epg-make-context epa-protocol)))
1056 (epg-context-set-passphrase-callback context
1057 #'epa-passphrase-callback-function)
1058 (epg-context-set-progress-callback context
1059 #'epa-progress-callback-function)
1060 (message "Signing keys...")
1061 (epg-sign-keys context keys local)
1062 (message "Signing keys...done")))
1063 (make-obsolete 'epa-sign-keys "Do not use.")
1067 ;;; epa.el ends here