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
52 `((((class color) (background dark))
53 (:foreground "PaleTurquoise"
54 ,@(if (assq ':weight custom-face-attributes)
58 (,@(if (assq ':weight custom-face-attributes)
61 "Face used for displaying the high validity."
64 (defface epa-validity-medium
65 `((((class color) (background dark))
66 (:foreground "PaleTurquoise"
67 ,@(if (assq ':slant custom-face-attributes)
71 (,@(if (assq ':slant custom-face-attributes)
74 "Face used for displaying the medium validity."
77 (defface epa-validity-low
79 (,@(if (assq ':slant custom-face-attributes)
82 "Face used for displaying the low validity."
85 (defface epa-validity-disabled
87 (,@(if (assq ':slant custom-face-attributes)
91 "Face used for displaying the disabled validity."
95 '((((class color) (background dark))
96 (:foreground "lightyellow"))
97 (((class color) (background light))
98 (:foreground "blue4")))
99 "Face used for displaying the string."
103 `((((class color) (background dark))
104 (:foreground "orange"
105 ,@(if (assq ':weight custom-face-attributes)
108 (((class color) (background light))
110 ,@(if (assq ':weight custom-face-attributes)
114 (,@(if (assq ':weight custom-face-attributes)
117 "Face used for displaying the high validity."
120 (defface epa-field-name
121 `((((class color) (background dark))
122 (:foreground "PaleTurquoise"
123 ,@(if (assq ':weight custom-face-attributes)
127 (,@(if (assq ':weight custom-face-attributes)
130 "Face for the name of the attribute field."
133 (defface epa-field-body
134 `((((class color) (background dark))
135 (:foreground "turquoise"
136 ,@(if (assq ':slant custom-face-attributes)
140 (,@(if (assq ':slant custom-face-attributes)
143 "Face for the body of the attribute field."
146 (defcustom epa-validity-face-alist
147 '((unknown . epa-validity-disabled)
148 (invalid . epa-validity-disabled)
149 (disabled . epa-validity-disabled)
150 (revoked . epa-validity-disabled)
151 (expired . epa-validity-disabled)
152 (none . epa-validity-low)
153 (undefined . epa-validity-low)
154 (never . epa-validity-low)
155 (marginal . epa-validity-medium)
156 (full . epa-validity-high)
157 (ultimate . epa-validity-high))
158 "An alist mapping validity values to faces."
159 :type '(repeat (cons symbol face))
162 (defvar epa-font-lock-keywords
165 ("^\t\\([^\t:]+:\\)[ \t]*\\(.*\\)$"
167 (2 'epa-field-body)))
168 "Default expressions to addon in epa-mode.")
170 (defconst epa-pubkey-algorithm-letter-alist
178 (defvar epa-protocol 'OpenPGP
179 "*The default protocol.
180 The value can be either OpenPGP or CMS.
182 You should bind this variable with `let', but do not set it globally.")
184 (defvar epa-armor nil
185 "*If non-nil, epa commands create ASCII armored output.
187 You should bind this variable with `let', but do not set it globally.")
189 (defvar epa-textmode nil
190 "*If non-nil, epa commands treat input files as text.
192 You should bind this variable with `let', but do not set it globally.")
194 (defvar epa-keys-buffer nil)
195 (defvar epa-key-buffer-alist nil)
197 (defvar epa-list-keys-arguments nil)
198 (defvar epa-info-buffer nil)
199 (defvar epa-last-coding-system-specified nil)
201 (defvar epa-key-list-mode-map
202 (let ((keymap (make-sparse-keymap)))
203 (define-key keymap "m" 'epa-mark-key)
204 (define-key keymap "u" 'epa-unmark-key)
205 (define-key keymap "d" 'epa-decrypt-file)
206 (define-key keymap "v" 'epa-verify-file)
207 (define-key keymap "s" 'epa-sign-file)
208 (define-key keymap "e" 'epa-encrypt-file)
209 (define-key keymap "r" 'epa-delete-keys)
210 (define-key keymap "i" 'epa-import-keys)
211 (define-key keymap "o" 'epa-export-keys)
212 (define-key keymap "g" 'revert-buffer)
213 (define-key keymap "n" 'next-line)
214 (define-key keymap "p" 'previous-line)
215 (define-key keymap " " 'scroll-up)
216 (define-key keymap [delete] 'scroll-down)
217 (define-key keymap "q" 'epa-exit-buffer)
220 (defvar epa-key-mode-map
221 (let ((keymap (make-sparse-keymap)))
222 (define-key keymap "q" 'epa-exit-buffer)
225 (defvar epa-info-mode-map
226 (let ((keymap (make-sparse-keymap)))
227 (define-key keymap "q" 'delete-window)
230 (defvar epa-exit-buffer-function #'bury-buffer)
232 (define-widget 'epa-key 'push-button
233 "Button for representing a epg-key object."
235 :button-face-get 'epa--key-widget-button-face-get
236 :value-create 'epa--key-widget-value-create
237 :action 'epa--key-widget-action
238 :help-echo 'epa--key-widget-help-echo)
240 (defun epa--key-widget-action (widget &optional event)
241 (epa--show-key (widget-get widget :value)))
243 (defun epa--key-widget-value-create (widget)
244 (let* ((key (widget-get widget :value))
245 (primary-sub-key (car (epg-key-sub-key-list key)))
246 (primary-user-id (car (epg-key-user-id-list key))))
247 (insert (format "%c "
248 (if (epg-sub-key-validity primary-sub-key)
249 (car (rassq (epg-sub-key-validity primary-sub-key)
250 epg-key-validity-alist))
252 (epg-sub-key-id primary-sub-key)
255 (if (stringp (epg-user-id-string primary-user-id))
256 (epg-user-id-string primary-user-id)
257 (epg-decode-dn (epg-user-id-string primary-user-id)))
260 (defun epa--key-widget-button-face-get (widget)
261 (let ((validity (epg-sub-key-validity (car (epg-key-sub-key-list
262 (widget-get widget :value))))))
264 (cdr (assq validity epa-validity-face-alist))
267 (defun epa--key-widget-help-echo (widget)
269 (epg-sub-key-id (car (epg-key-sub-key-list
270 (widget-get widget :value))))))
273 (if (fboundp 'encode-coding-string)
274 (defalias 'epa--encode-coding-string 'encode-coding-string)
275 (defalias 'epa--encode-coding-string 'identity)))
278 (if (fboundp 'decode-coding-string)
279 (defalias 'epa--decode-coding-string 'decode-coding-string)
280 (defalias 'epa--decode-coding-string 'identity)))
282 (defun epa-key-list-mode ()
283 "Major mode for `epa-list-keys'."
284 (kill-all-local-variables)
285 (buffer-disable-undo)
286 (setq major-mode 'epa-key-list-mode
290 (use-local-map epa-key-list-mode-map)
291 (make-local-variable 'font-lock-defaults)
292 (setq font-lock-defaults '(epa-font-lock-keywords t))
293 ;; In XEmacs, auto-initialization of font-lock is not effective
294 ;; if buffer-file-name is not set.
295 (font-lock-set-defaults)
296 (make-local-variable 'epa-exit-buffer-function)
297 (make-local-variable 'revert-buffer-function)
298 (setq revert-buffer-function 'epa--key-list-revert-buffer)
299 (run-hooks 'epa-key-list-mode-hook))
301 (defun epa-key-mode ()
302 "Major mode for a key description."
303 (kill-all-local-variables)
304 (buffer-disable-undo)
305 (setq major-mode 'epa-key-mode
309 (use-local-map epa-key-mode-map)
310 (make-local-variable 'font-lock-defaults)
311 (setq font-lock-defaults '(epa-font-lock-keywords t))
312 ;; In XEmacs, auto-initialization of font-lock is not effective
313 ;; if buffer-file-name is not set.
314 (font-lock-set-defaults)
315 (make-local-variable 'epa-exit-buffer-function)
316 (run-hooks 'epa-key-mode-hook))
318 (defun epa-info-mode ()
319 "Major mode for `epa-info-buffer'."
320 (kill-all-local-variables)
321 (buffer-disable-undo)
322 (setq major-mode 'epa-info-mode
326 (use-local-map epa-info-mode-map)
327 (run-hooks 'epa-info-mode-hook))
329 (defun epa-mark-key (&optional arg)
330 "Mark a key on the current line.
331 If ARG is non-nil, unmark the key."
333 (let ((inhibit-read-only t)
337 (unless (get-text-property (point) 'epa-key)
338 (error "No key on this line"))
339 (setq properties (text-properties-at (point)))
341 (insert (if arg " " "*"))
342 (set-text-properties (1- (point)) (point) properties)
345 (defun epa-unmark-key (&optional arg)
346 "Unmark a key on the current line.
347 If ARG is non-nil, mark the key."
349 (epa-mark-key (not arg)))
351 (defun epa-exit-buffer ()
352 "Exit the current buffer.
353 `epa-exit-buffer-function' is called if it is set."
355 (funcall epa-exit-buffer-function))
357 (defun epa--insert-keys (keys)
360 (narrow-to-region (point) (point))
365 (add-text-properties point (point)
366 (list 'epa-key (car keys)
371 (widget-create 'epa-key :value (car keys))
373 (setq keys (cdr keys))))
374 (add-text-properties (point-min) (point-max)
375 (list 'epa-list-keys t
381 (defun epa--list-keys (name secret)
382 (unless (and epa-keys-buffer
383 (buffer-live-p epa-keys-buffer))
384 (setq epa-keys-buffer (generate-new-buffer "*Keys*")))
385 (set-buffer epa-keys-buffer)
387 (let ((inhibit-read-only t)
390 (context (epg-make-context epa-protocol)))
391 (unless (get-text-property point 'epa-list-keys)
392 (setq point (next-single-property-change point 'epa-list-keys)))
395 (or (next-single-property-change point 'epa-list-keys)
398 (epa--insert-keys (epg-list-keys context name secret))
400 (set-keymap-parent (current-local-map) widget-keymap))
401 (make-local-variable 'epa-list-keys-arguments)
402 (setq epa-list-keys-arguments (list name secret))
403 (goto-char (point-min))
404 (pop-to-buffer (current-buffer)))
407 (defun epa-list-keys (&optional name)
408 "List all keys matched with NAME from the public keyring."
410 (if current-prefix-arg
411 (let ((name (read-string "Pattern: "
412 (if epa-list-keys-arguments
413 (car epa-list-keys-arguments)))))
414 (list (if (equal name "") nil name)))
416 (epa--list-keys name nil))
419 (defun epa-list-secret-keys (&optional name)
420 "List all keys matched with NAME from the private keyring."
422 (if current-prefix-arg
423 (let ((name (read-string "Pattern: "
424 (if epa-list-keys-arguments
425 (car epa-list-keys-arguments)))))
426 (list (if (equal name "") nil name)))
428 (epa--list-keys name t))
430 (defun epa--key-list-revert-buffer (&optional ignore-auto noconfirm)
431 (apply #'epa--list-keys epa-list-keys-arguments))
433 (defun epa--marked-keys ()
435 (set-buffer epa-keys-buffer)
436 (goto-char (point-min))
438 (while (re-search-forward "^\\*" nil t)
439 (if (setq key (get-text-property (match-beginning 0)
441 (setq keys (cons key keys))))
445 (let ((key (get-text-property (point) 'epa-key)))
449 (defun epa--select-keys (prompt keys)
451 (unless (and epa-keys-buffer
452 (buffer-live-p epa-keys-buffer))
453 (setq epa-keys-buffer (generate-new-buffer "*Keys*")))
454 (set-buffer epa-keys-buffer)
456 (let ((inhibit-read-only t)
460 (substitute-command-keys "\
461 - `\\[epa-mark-key]' to mark a key on the line
462 - `\\[epa-unmark-key]' to unmark a key on the line\n"))
464 :notify (lambda (&rest ignore) (abort-recursive-edit))
466 (substitute-command-keys
467 "Click here or \\[abort-recursive-edit] to cancel")
470 :notify (lambda (&rest ignore) (exit-recursive-edit))
472 (substitute-command-keys
473 "Click here or \\[exit-recursive-edit] to finish")
476 (epa--insert-keys keys)
478 (set-keymap-parent (current-local-map) widget-keymap)
479 (setq epa-exit-buffer-function #'abort-recursive-edit)
480 (goto-char (point-min))
481 (pop-to-buffer (current-buffer)))
486 (if (get-buffer-window epa-keys-buffer)
487 (delete-window (get-buffer-window epa-keys-buffer)))
488 (kill-buffer epa-keys-buffer))))
491 (defun epa-select-keys (context prompt &optional names secret)
492 "Display a user's keyring and ask him to select keys.
493 CONTEXT is an epg-context.
494 PROMPT is a string to prompt with.
495 NAMES is a list of strings to be matched with keys. If it is nil, all
497 If SECRET is non-nil, list secret keys instead of public keys."
498 (let ((keys (epg-list-keys context names secret)))
499 (if (> (length keys) 1)
500 (epa--select-keys prompt keys)
503 (defun epa--format-fingerprint-1 (fingerprint unit-size block-size)
507 (goto-char (point-min))
509 (goto-char (+ (point) unit-size))
511 (setq unit (1+ unit))
512 (insert (if (= (% unit block-size) 0) " " " ")))
515 (defun epa--format-fingerprint (fingerprint)
517 (if (= (length fingerprint) 40)
518 ;; 1234 5678 9ABC DEF0 1234 5678 9ABC DEF0 1234 5678
519 (epa--format-fingerprint-1 fingerprint 4 5)
520 ;; 12 34 56 78 9A BC DE F0 12 34 56 78 9A BC DE F0
521 (epa--format-fingerprint-1 fingerprint 2 8))))
523 (defun epa--show-key (key)
524 (let* ((primary-sub-key (car (epg-key-sub-key-list key)))
525 (entry (assoc (epg-sub-key-id primary-sub-key)
526 epa-key-buffer-alist))
527 (inhibit-read-only t)
531 (setq entry (cons (epg-sub-key-id primary-sub-key) nil)
532 epa-key-buffer-alist (cons entry epa-key-buffer-alist)))
533 (unless (and (cdr entry)
534 (buffer-live-p (cdr entry)))
535 (setcdr entry (generate-new-buffer
536 (format "*Key*%s" (epg-sub-key-id primary-sub-key)))))
537 (set-buffer (cdr entry))
539 (make-local-variable 'epa-key)
542 (setq pointer (epg-key-user-id-list key))
546 (if (epg-user-id-validity (car pointer))
548 (car (rassq (epg-user-id-validity (car pointer))
549 epg-key-validity-alist)))
552 (if (stringp (epg-user-id-string (car pointer)))
553 (epg-user-id-string (car pointer))
554 (epg-decode-dn (epg-user-id-string (car pointer))))
556 (setq pointer (cdr pointer)))
557 (setq pointer (epg-key-sub-key-list key))
560 (if (epg-sub-key-validity (car pointer))
562 (car (rassq (epg-sub-key-validity (car pointer))
563 epg-key-validity-alist)))
566 (epg-sub-key-id (car pointer))
569 (epg-sub-key-length (car pointer)))
571 (cdr (assq (epg-sub-key-algorithm (car pointer))
572 epg-pubkey-algorithm-alist))
575 (format-time-string "%Y-%m-%d"
576 (epg-sub-key-creation-time (car pointer)))
577 (error "????-??-??"))
578 (if (epg-sub-key-expiration-time (car pointer))
579 (format "\n\tExpires: %s"
581 (format-time-string "%Y-%m-%d"
582 (epg-sub-key-expiration-time
584 (error "????-??-??")))
587 (mapconcat #'symbol-name
588 (epg-sub-key-capability (car pointer))
591 (epa--format-fingerprint (epg-sub-key-fingerprint (car pointer)))
593 (setq pointer (cdr pointer)))
594 (goto-char (point-min))
595 (pop-to-buffer (current-buffer))))
597 (defun epa-display-info (info)
598 (if epa-popup-info-window
599 (save-selected-window
600 (unless (and epa-info-buffer (buffer-live-p epa-info-buffer))
601 (setq epa-info-buffer (generate-new-buffer "*Info*")))
602 (if (get-buffer-window epa-info-buffer)
603 (delete-window (get-buffer-window epa-info-buffer)))
605 (set-buffer epa-info-buffer)
606 (let ((inhibit-read-only t)
611 (goto-char (point-min)))
612 (if (> (window-height)
613 epa-info-window-height)
614 (set-window-buffer (split-window nil (- (window-height)
615 epa-info-window-height))
617 (pop-to-buffer epa-info-buffer)
618 (if (> (window-height) epa-info-window-height)
619 (shrink-window (- (window-height) epa-info-window-height)))))
620 (message "%s" info)))
622 (defun epa-display-verify-result (verify-result)
623 (epa-display-info (epg-verify-result-to-string verify-result)))
624 (make-obsolete 'epa-display-verify-result 'epa-display-info)
626 (defun epa-passphrase-callback-function (context key-id handback)
628 (read-passwd "Passphrase for symmetric encryption: "
629 (eq (epg-context-operation context) 'encrypt))
632 "Passphrase for PIN: "
633 (let ((entry (assoc key-id epg-user-id-alist)))
635 (format "Passphrase for %s %s: " key-id (cdr entry))
636 (format "Passphrase for %s: " key-id)))))))
638 (defun epa-progress-callback-function (context what char current total
640 (message "%s%d%% (%d/%d)" (or handback
642 (if (> total 0) (floor (* (/ current (float total)) 100)) 0)
646 (defun epa-decrypt-file (file)
648 (interactive "fFile: ")
649 (setq file (expand-file-name file))
650 (let* ((default-name (file-name-sans-extension file))
651 (plain (expand-file-name
653 (concat "To file (default "
654 (file-name-nondirectory default-name)
656 (file-name-directory default-name)
658 (context (epg-make-context epa-protocol)))
659 (epg-context-set-passphrase-callback context
660 #'epa-passphrase-callback-function)
661 (epg-context-set-progress-callback context
662 #'epa-progress-callback-function
663 (format "Decrypting %s..."
664 (file-name-nondirectory file)))
665 (message "Decrypting %s..." (file-name-nondirectory file))
666 (epg-decrypt-file context file plain)
667 (message "Decrypting %s...wrote %s" (file-name-nondirectory file)
668 (file-name-nondirectory plain))
669 (if (epg-context-result-for context 'verify)
670 (epa-display-info (epg-verify-result-to-string
671 (epg-context-result-for context 'verify))))))
674 (defun epa-verify-file (file)
676 (interactive "fFile: ")
677 (setq file (expand-file-name file))
678 (let* ((context (epg-make-context epa-protocol))
679 (plain (if (equal (file-name-extension file) "sig")
680 (file-name-sans-extension file))))
681 (epg-context-set-progress-callback context
682 #'epa-progress-callback-function
683 (format "Verifying %s..."
684 (file-name-nondirectory file)))
685 (message "Verifying %s..." (file-name-nondirectory file))
686 (epg-verify-file context file plain)
687 (message "Verifying %s...done" (file-name-nondirectory file))
688 (if (epg-context-result-for context 'verify)
689 (epa-display-info (epg-verify-result-to-string
690 (epg-context-result-for context 'verify))))))
692 (defun epa--read-signature-type ()
695 (message "Signature type (n,c,d,?) ")
700 (setq type 'detached))
702 (with-output-to-temp-buffer "*Help*"
704 (set-buffer standard-output)
706 n - Create a normal signature
707 c - Create a cleartext signature
708 d - Create a detached signature
712 (setq type 'normal))))))
715 (defun epa-sign-file (file signers mode)
716 "Sign FILE by SIGNERS keys selected."
718 (let ((verbose current-prefix-arg))
719 (list (expand-file-name (read-file-name "File: "))
721 (epa-select-keys (epg-make-context epa-protocol)
722 "Select keys for signing.
723 If no one is selected, default secret key is used. "
726 (epa--read-signature-type)
728 (let ((signature (concat file
729 (if (eq epa-protocol 'OpenPGP)
732 '(nil t normal detached))))
734 (if (memq mode '(t detached))
737 (if (memq mode '(t detached))
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-signers context signers)
744 (epg-context-set-passphrase-callback context
745 #'epa-passphrase-callback-function)
746 (epg-context-set-progress-callback context
747 #'epa-progress-callback-function
748 (format "Signing %s..."
749 (file-name-nondirectory file)))
750 (message "Signing %s..." (file-name-nondirectory file))
751 (epg-sign-file context file signature mode)
752 (message "Signing %s...wrote %s" (file-name-nondirectory file)
753 (file-name-nondirectory signature))))
756 (defun epa-encrypt-file (file recipients)
757 "Encrypt FILE for RECIPIENTS."
759 (list (expand-file-name (read-file-name "File: "))
760 (epa-select-keys (epg-make-context epa-protocol)
761 "Select recipients for encryption.
762 If no one is selected, symmetric encryption will be performed. ")))
763 (let ((cipher (concat file (if (eq epa-protocol 'OpenPGP)
764 (if epa-armor ".asc" ".gpg")
766 (context (epg-make-context epa-protocol)))
767 (epg-context-set-armor context epa-armor)
768 (epg-context-set-textmode context epa-textmode)
769 (epg-context-set-passphrase-callback context
770 #'epa-passphrase-callback-function)
771 (epg-context-set-progress-callback context
772 #'epa-progress-callback-function
773 (format "Encrypting %s..."
774 (file-name-nondirectory file)))
775 (message "Encrypting %s..." (file-name-nondirectory file))
776 (epg-encrypt-file context file recipients cipher)
777 (message "Encrypting %s...wrote %s" (file-name-nondirectory file)
778 (file-name-nondirectory cipher))))
781 (defun epa-decrypt-region (start end)
782 "Decrypt the current region between START and END.
784 Don't use this command in Lisp programs!"
787 (let ((context (epg-make-context epa-protocol))
789 (epg-context-set-passphrase-callback context
790 #'epa-passphrase-callback-function)
791 (epg-context-set-progress-callback context
792 #'epa-progress-callback-function
794 (message "Decrypting...")
795 (setq plain (epg-decrypt-string context (buffer-substring start end)))
796 (message "Decrypting...done")
797 (setq plain (epa--decode-coding-string
799 (or coding-system-for-read
800 (get-text-property start 'epa-coding-system-used))))
801 (if (y-or-n-p "Replace the original text? ")
802 (let ((inhibit-read-only t)
804 (delete-region start end)
807 (with-output-to-temp-buffer "*Temp*"
808 (set-buffer standard-output)
811 (if (epg-context-result-for context 'verify)
812 (epa-display-info (epg-verify-result-to-string
813 (epg-context-result-for context 'verify)))))))
815 (defun epa--find-coding-system-for-mime-charset (mime-charset)
816 (if (featurep 'xemacs)
817 (if (fboundp 'find-coding-system)
818 (find-coding-system mime-charset))
819 (let ((pointer (coding-system-list)))
821 (eq (coding-system-get (car pointer) 'mime-charset)
823 (setq pointer (cdr pointer)))
827 (defun epa-decrypt-armor-in-region (start end)
828 "Decrypt OpenPGP armors in the current region between START and END.
830 Don't use this command in Lisp programs!"
834 (narrow-to-region start end)
836 (let (armor-start armor-end)
837 (while (re-search-forward "-----BEGIN PGP MESSAGE-----$" nil t)
838 (setq armor-start (match-beginning 0)
839 armor-end (re-search-forward "^-----END PGP MESSAGE-----$"
842 (error "No armor tail"))
843 (goto-char armor-start)
844 (let ((coding-system-for-read
845 (or coding-system-for-read
846 (if (re-search-forward "^Charset: \\(.*\\)" armor-end t)
847 (epa--find-coding-system-for-mime-charset
848 (intern (downcase (match-string 1))))))))
849 (goto-char armor-end)
850 (epa-decrypt-region armor-start armor-end)))))))
853 (defun epa-verify-region (start end)
854 "Verify the current region between START and END.
856 Don't use this command in Lisp programs!"
858 (let ((context (epg-make-context epa-protocol))
860 (epg-context-set-progress-callback context
861 #'epa-progress-callback-function
863 (message "Verifying...")
864 (setq plain (epg-verify-string
866 (epa--encode-coding-string
867 (buffer-substring start end)
868 (or coding-system-for-write
869 (get-text-property start 'epa-coding-system-used)))))
870 (message "Verifying...done")
871 (setq plain (epa--decode-coding-string
873 (or coding-system-for-read
874 (get-text-property start 'epa-coding-system-used))))
875 (if (y-or-n-p "Replace the original text? ")
876 (let ((inhibit-read-only t)
878 (delete-region start end)
881 (with-output-to-temp-buffer "*Temp*"
882 (set-buffer standard-output)
885 (if (epg-context-result-for context 'verify)
886 (epa-display-info (epg-verify-result-to-string
887 (epg-context-result-for context 'verify))))))
890 (defun epa-verify-cleartext-in-region (start end)
891 "Verify OpenPGP cleartext signed messages in the current region
892 between START and END.
894 Don't use this command in Lisp programs!"
898 (narrow-to-region start end)
900 (let (cleartext-start cleartext-end)
901 (while (re-search-forward "-----BEGIN PGP SIGNED MESSAGE-----$"
903 (setq cleartext-start (match-beginning 0))
904 (unless (re-search-forward "^-----BEGIN PGP SIGNATURE-----$"
906 (error "Invalid cleartext signed message"))
907 (setq cleartext-end (re-search-forward
908 "^-----END PGP SIGNATURE-----$"
910 (unless cleartext-end
911 (error "No cleartext tail"))
912 (epa-verify-region cleartext-start cleartext-end))))))
915 (if (fboundp 'select-safe-coding-system)
916 (defalias 'epa--select-safe-coding-system 'select-safe-coding-system)
917 (defun epa--select-safe-coding-system (from to)
918 buffer-file-coding-system)))
921 (defun epa-sign-region (start end signers mode)
922 "Sign the current region between START and END by SIGNERS keys selected.
924 Don't use this command in Lisp programs!"
926 (let ((verbose current-prefix-arg))
927 (setq epa-last-coding-system-specified
928 (or coding-system-for-write
929 (epa--select-safe-coding-system
930 (region-beginning) (region-end))))
931 (list (region-beginning) (region-end)
933 (epa-select-keys (epg-make-context epa-protocol)
934 "Select keys for signing.
935 If no one is selected, default secret key is used. "
938 (epa--read-signature-type)
941 (let ((context (epg-make-context epa-protocol))
943 ;;(epg-context-set-armor context epa-armor)
944 (epg-context-set-armor context t)
945 ;;(epg-context-set-textmode context epa-textmode)
946 (epg-context-set-textmode context t)
947 (epg-context-set-signers context signers)
948 (epg-context-set-passphrase-callback context
949 #'epa-passphrase-callback-function)
950 (epg-context-set-progress-callback context
951 #'epa-progress-callback-function
953 (message "Signing...")
954 (setq signature (epg-sign-string context
955 (epa--encode-coding-string
956 (buffer-substring start end)
957 epa-last-coding-system-specified)
959 (message "Signing...done")
960 (delete-region start end)
962 (add-text-properties (point)
964 (insert (epa--decode-coding-string
966 (or coding-system-for-read
967 epa-last-coding-system-specified)))
969 (list 'epa-coding-system-used
970 epa-last-coding-system-specified
977 (if (fboundp 'derived-mode-p)
978 (defalias 'epa--derived-mode-p 'derived-mode-p)
979 (defun epa--derived-mode-p (&rest modes)
980 "Non-nil if the current major mode is derived from one of MODES.
981 Uses the `derived-mode-parent' property of the symbol to trace backwards."
982 (let ((parent major-mode))
983 (while (and (not (memq parent modes))
984 (setq parent (get parent 'derived-mode-parent))))
988 (defun epa-encrypt-region (start end recipients sign signers)
989 "Encrypt the current region between START and END for RECIPIENTS.
991 Don't use this command in Lisp programs!"
993 (let ((verbose current-prefix-arg)
994 (context (epg-make-context epa-protocol))
996 (setq epa-last-coding-system-specified
997 (or coding-system-for-write
998 (epa--select-safe-coding-system
999 (region-beginning) (region-end))))
1000 (list (region-beginning) (region-end)
1001 (epa-select-keys context
1002 "Select recipients for encryption.
1003 If no one is selected, symmetric encryption will be performed. ")
1004 (setq sign (if verbose (y-or-n-p "Sign? ")))
1006 (epa-select-keys context
1007 "Select keys for signing. ")))))
1009 (let ((context (epg-make-context epa-protocol))
1011 ;;(epg-context-set-armor context epa-armor)
1012 (epg-context-set-armor context t)
1013 ;;(epg-context-set-textmode context epa-textmode)
1014 (epg-context-set-textmode context t)
1016 (epg-context-set-signers context signers))
1017 (epg-context-set-passphrase-callback context
1018 #'epa-passphrase-callback-function)
1019 (epg-context-set-progress-callback context
1020 #'epa-progress-callback-function
1022 (message "Encrypting...")
1023 (setq cipher (epg-encrypt-string context
1024 (epa--encode-coding-string
1025 (buffer-substring start end)
1026 epa-last-coding-system-specified)
1029 (message "Encrypting...done")
1030 (delete-region start end)
1032 (add-text-properties (point)
1036 (list 'epa-coding-system-used
1037 epa-last-coding-system-specified
1044 (defun epa-delete-keys (keys &optional allow-secret)
1045 "Delete selected KEYS.
1047 Don't use this command in Lisp programs!"
1049 (let ((keys (epa--marked-keys)))
1051 (error "No keys selected"))
1053 (eq (nth 1 epa-list-keys-arguments) t))))
1054 (let ((context (epg-make-context epa-protocol)))
1055 (message "Deleting...")
1056 (epg-delete-keys context keys allow-secret)
1057 (message "Deleting...done")
1058 (apply #'epa-list-keys epa-list-keys-arguments)))
1061 (defun epa-import-keys (file)
1062 "Import keys from FILE.
1064 Don't use this command in Lisp programs!"
1065 (interactive "fFile: ")
1066 (setq file (expand-file-name file))
1067 (let ((context (epg-make-context epa-protocol)))
1068 (message "Importing %s..." (file-name-nondirectory file))
1071 (epg-import-keys-from-file context file)
1072 (message "Importing %s...done" (file-name-nondirectory file)))
1074 (message "Importing %s...failed" (file-name-nondirectory file))))
1075 (if (epg-context-result-for context 'import)
1076 (epa-display-info (epg-import-result-to-string
1077 (epg-context-result-for context 'import))))
1078 (if (eq major-mode 'epa-key-list-mode)
1079 (apply #'epa-list-keys epa-list-keys-arguments))))
1082 (defun epa-import-keys-region (start end)
1083 "Import keys from the region.
1085 Don't use this command in Lisp programs!"
1087 (let ((context (epg-make-context epa-protocol)))
1088 (message "Importing...")
1091 (epg-import-keys-from-string context (buffer-substring start end))
1092 (message "Importing...done"))
1094 (message "Importing...failed")))
1095 (if (epg-context-result-for context 'import)
1096 (epa-display-info (epg-import-result-to-string
1097 (epg-context-result-for context 'import))))))
1100 (defun epa-import-armor-in-region (start end)
1101 "Import keys in the OpenPGP armor format in the current region
1102 between START and END.
1104 Don't use this command in Lisp programs!"
1108 (narrow-to-region start end)
1110 (let (armor-start armor-end)
1111 (while (re-search-forward
1112 "-----BEGIN \\(PGP \\(PUBLIC\\|PRIVATE\\) KEY BLOCK\\)-----$"
1114 (setq armor-start (match-beginning 0)
1115 armor-end (re-search-forward
1116 (concat "^-----END " (match-string 1) "-----$")
1119 (error "No armor tail"))
1120 (epa-import-keys-region armor-start armor-end))))))
1123 (defun epa-export-keys (keys file)
1124 "Export selected KEYS to FILE.
1126 Don't use this command in Lisp programs!"
1128 (let ((keys (epa--marked-keys))
1131 (error "No keys selected"))
1134 (concat (epg-sub-key-id (car (epg-key-sub-key-list (car keys))))
1135 (if epa-armor ".asc" ".gpg"))
1140 (concat "To file (default "
1141 (file-name-nondirectory default-name)
1143 (file-name-directory default-name)
1145 (let ((context (epg-make-context epa-protocol)))
1146 (epg-context-set-armor context epa-armor)
1147 (message "Exporting to %s..." (file-name-nondirectory file))
1148 (epg-export-keys-to-file context keys file)
1149 (message "Exporting to %s...done" (file-name-nondirectory file))))
1152 (defun epa-insert-keys (keys)
1153 "Insert selected KEYS after the point.
1155 Don't use this command in Lisp programs!"
1157 (list (epa-select-keys (epg-make-context epa-protocol)
1158 "Select keys to export. ")))
1159 (let ((context (epg-make-context epa-protocol)))
1160 ;;(epg-context-set-armor context epa-armor)
1161 (epg-context-set-armor context t)
1162 (insert (epg-export-keys-to-string context keys))))
1165 (defun epa-sign-keys (keys &optional local)
1166 "Sign selected KEYS.
1167 If a prefix-arg is specified, the signature is marked as non exportable.
1169 Don't use this command in Lisp programs!"
1171 (let ((keys (epa--marked-keys)))
1173 (error "No keys selected"))
1174 (list keys current-prefix-arg)))
1175 (let ((context (epg-make-context epa-protocol)))
1176 (epg-context-set-passphrase-callback context
1177 #'epa-passphrase-callback-function)
1178 (epg-context-set-progress-callback context
1179 #'epa-progress-callback-function
1181 (message "Signing keys...")
1182 (epg-sign-keys context keys local)
1183 (message "Signing keys...done")))
1184 (make-obsolete 'epa-sign-keys "Do not use.")
1188 ;;; epa.el ends here