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."
162 (defcustom epa-font-lock-keywords
165 ("^\t\\([^\t:]+:\\)[ \t]*\\(.*\\)$"
167 (2 'epa-field-body)))
168 "Default expressions to addon in epa-mode."
169 :type '(repeat (list string))
172 (defconst epa-pubkey-algorithm-letter-alist
180 (defvar epa-protocol 'OpenPGP
181 "*The default protocol.
182 The value can be either OpenPGP or CMS.
184 You should bind this variable with `let', but do not set it globally.")
186 (defvar epa-armor nil
187 "*If non-nil, epa commands create ASCII armored output.
189 You should bind this variable with `let', but do not set it globally.")
191 (defvar epa-textmode nil
192 "*If non-nil, epa commands treat input files as text.
194 You should bind this variable with `let', but do not set it globally.")
196 (defvar epa-keys-buffer nil)
197 (defvar epa-key-buffer-alist nil)
199 (defvar epa-list-keys-arguments nil)
200 (defvar epa-info-buffer nil)
201 (defvar epa-last-coding-system-specified nil)
203 (defvar epa-key-list-mode-map
204 (let ((keymap (make-sparse-keymap)))
205 (define-key keymap "m" 'epa-mark-key)
206 (define-key keymap "u" 'epa-unmark-key)
207 (define-key keymap "d" 'epa-decrypt-file)
208 (define-key keymap "v" 'epa-verify-file)
209 (define-key keymap "s" 'epa-sign-file)
210 (define-key keymap "e" 'epa-encrypt-file)
211 (define-key keymap "r" 'epa-delete-keys)
212 (define-key keymap "i" 'epa-import-keys)
213 (define-key keymap "o" 'epa-export-keys)
214 (define-key keymap "g" 'revert-buffer)
215 (define-key keymap "n" 'next-line)
216 (define-key keymap "p" 'previous-line)
217 (define-key keymap " " 'scroll-up)
218 (define-key keymap [delete] 'scroll-down)
219 (define-key keymap "q" 'epa-exit-buffer)
222 (defvar epa-key-mode-map
223 (let ((keymap (make-sparse-keymap)))
224 (define-key keymap "q" 'epa-exit-buffer)
227 (defvar epa-info-mode-map
228 (let ((keymap (make-sparse-keymap)))
229 (define-key keymap "q" 'delete-window)
232 (defvar epa-exit-buffer-function #'bury-buffer)
234 (define-widget 'epa-key 'push-button
235 "Button for representing a epg-key object."
237 :button-face-get 'epa--key-widget-button-face-get
238 :value-create 'epa--key-widget-value-create
239 :action 'epa--key-widget-action
240 :help-echo 'epa--key-widget-help-echo)
242 (defun epa--key-widget-action (widget &optional event)
243 (epa--show-key (widget-get widget :value)))
245 (defun epa--key-widget-value-create (widget)
246 (let* ((key (widget-get widget :value))
247 (primary-sub-key (car (epg-key-sub-key-list key)))
248 (primary-user-id (car (epg-key-user-id-list key))))
249 (insert (format "%c "
250 (if (epg-sub-key-validity primary-sub-key)
251 (car (rassq (epg-sub-key-validity primary-sub-key)
252 epg-key-validity-alist))
254 (epg-sub-key-id primary-sub-key)
257 (if (stringp (epg-user-id-string primary-user-id))
258 (epg-user-id-string primary-user-id)
259 (epg-decode-dn (epg-user-id-string primary-user-id)))
262 (defun epa--key-widget-button-face-get (widget)
263 (let ((validity (epg-sub-key-validity (car (epg-key-sub-key-list
264 (widget-get widget :value))))))
266 (cdr (assq validity epa-validity-face-alist))
269 (defun epa--key-widget-help-echo (widget)
271 (epg-sub-key-id (car (epg-key-sub-key-list
272 (widget-get widget :value))))))
275 (if (fboundp 'encode-coding-string)
276 (defalias 'epa--encode-coding-string 'encode-coding-string)
277 (defalias 'epa--encode-coding-string 'identity)))
280 (if (fboundp 'decode-coding-string)
281 (defalias 'epa--decode-coding-string 'decode-coding-string)
282 (defalias 'epa--decode-coding-string 'identity)))
284 (defun epa-key-list-mode ()
285 "Major mode for `epa-list-keys'."
286 (kill-all-local-variables)
287 (buffer-disable-undo)
288 (setq major-mode 'epa-key-list-mode
292 (use-local-map epa-key-list-mode-map)
293 (make-local-variable 'font-lock-defaults)
294 (setq font-lock-defaults '(epa-font-lock-keywords t))
295 ;; In XEmacs, auto-initialization of font-lock is not effective
296 ;; if buffer-file-name is not set.
297 (font-lock-set-defaults)
298 (make-local-variable 'epa-exit-buffer-function)
299 (make-local-variable 'revert-buffer-function)
300 (setq revert-buffer-function 'epa--key-list-revert-buffer)
301 (run-hooks 'epa-key-list-mode-hook))
303 (defun epa-key-mode ()
304 "Major mode for a key description."
305 (kill-all-local-variables)
306 (buffer-disable-undo)
307 (setq major-mode 'epa-key-mode
311 (use-local-map epa-key-mode-map)
312 (make-local-variable 'font-lock-defaults)
313 (setq font-lock-defaults '(epa-font-lock-keywords t))
314 ;; In XEmacs, auto-initialization of font-lock is not effective
315 ;; if buffer-file-name is not set.
316 (font-lock-set-defaults)
317 (make-local-variable 'epa-exit-buffer-function)
318 (run-hooks 'epa-key-mode-hook))
320 (defun epa-info-mode ()
321 "Major mode for `epa-info-buffer'."
322 (kill-all-local-variables)
323 (buffer-disable-undo)
324 (setq major-mode 'epa-info-mode
328 (use-local-map epa-info-mode-map)
329 (run-hooks 'epa-info-mode-hook))
331 (defun epa-mark-key (&optional arg)
332 "Mark a key on the current line.
333 If ARG is non-nil, unmark the key."
335 (let ((inhibit-read-only t)
339 (unless (get-text-property (point) 'epa-key)
340 (error "No key on this line"))
341 (setq properties (text-properties-at (point)))
343 (insert (if arg " " "*"))
344 (set-text-properties (1- (point)) (point) properties)
347 (defun epa-unmark-key (&optional arg)
348 "Unmark a key on the current line.
349 If ARG is non-nil, mark the key."
351 (epa-mark-key (not arg)))
353 (defun epa-exit-buffer ()
354 "Exit the current buffer.
355 `epa-exit-buffer-function' is called if it is set."
357 (funcall epa-exit-buffer-function))
359 (defun epa--insert-keys (keys)
362 (narrow-to-region (point) (point))
367 (add-text-properties point (point)
368 (list 'epa-key (car keys)
373 (widget-create 'epa-key :value (car keys))
375 (setq keys (cdr keys))))
376 (add-text-properties (point-min) (point-max)
377 (list 'epa-list-keys t
383 (defun epa--list-keys (name secret)
384 (unless (and epa-keys-buffer
385 (buffer-live-p epa-keys-buffer))
386 (setq epa-keys-buffer (generate-new-buffer "*Keys*")))
387 (set-buffer epa-keys-buffer)
389 (let ((inhibit-read-only t)
392 (context (epg-make-context epa-protocol)))
393 (unless (get-text-property point 'epa-list-keys)
394 (setq point (next-single-property-change point 'epa-list-keys)))
397 (or (next-single-property-change point 'epa-list-keys)
400 (epa--insert-keys (epg-list-keys context name secret))
402 (set-keymap-parent (current-local-map) widget-keymap))
403 (make-local-variable 'epa-list-keys-arguments)
404 (setq epa-list-keys-arguments (list name secret))
405 (goto-char (point-min))
406 (pop-to-buffer (current-buffer)))
409 (defun epa-list-keys (&optional name)
410 "List all keys matched with NAME from the public keyring."
412 (if current-prefix-arg
413 (let ((name (read-string "Pattern: "
414 (if epa-list-keys-arguments
415 (car epa-list-keys-arguments)))))
416 (list (if (equal name "") nil name)))
418 (epa--list-keys name nil))
421 (defun epa-list-secret-keys (&optional name)
422 "List all keys matched with NAME from the private keyring."
424 (if current-prefix-arg
425 (let ((name (read-string "Pattern: "
426 (if epa-list-keys-arguments
427 (car epa-list-keys-arguments)))))
428 (list (if (equal name "") nil name)))
430 (epa--list-keys name t))
432 (defun epa--key-list-revert-buffer (&optional ignore-auto noconfirm)
433 (apply #'epa--list-keys epa-list-keys-arguments))
435 (defun epa--marked-keys ()
437 (set-buffer epa-keys-buffer)
438 (goto-char (point-min))
440 (while (re-search-forward "^\\*" nil t)
441 (if (setq key (get-text-property (match-beginning 0)
443 (setq keys (cons key keys))))
447 (let ((key (get-text-property (point) 'epa-key)))
451 (defun epa--select-keys (prompt keys)
453 (unless (and epa-keys-buffer
454 (buffer-live-p epa-keys-buffer))
455 (setq epa-keys-buffer (generate-new-buffer "*Keys*")))
456 (set-buffer epa-keys-buffer)
458 (let ((inhibit-read-only t)
462 (substitute-command-keys "\
463 - `\\[epa-mark-key]' to mark a key on the line
464 - `\\[epa-unmark-key]' to unmark a key on the line\n"))
466 :notify (lambda (&rest ignore) (abort-recursive-edit))
468 (substitute-command-keys
469 "Click here or \\[abort-recursive-edit] to cancel")
472 :notify (lambda (&rest ignore) (exit-recursive-edit))
474 (substitute-command-keys
475 "Click here or \\[exit-recursive-edit] to finish")
478 (epa--insert-keys keys)
480 (set-keymap-parent (current-local-map) widget-keymap)
481 (setq epa-exit-buffer-function #'abort-recursive-edit)
482 (goto-char (point-min))
483 (pop-to-buffer (current-buffer)))
488 (if (get-buffer-window epa-keys-buffer)
489 (delete-window (get-buffer-window epa-keys-buffer)))
490 (kill-buffer epa-keys-buffer))))
493 (defun epa-select-keys (context prompt &optional names secret)
494 "Display a user's keyring and ask him to select keys.
495 CONTEXT is an epg-context.
496 PROMPT is a string to prompt with.
497 NAMES is a list of strings to be matched with keys. If it is nil, all
499 If SECRET is non-nil, list secret keys instead of public keys."
500 (let ((keys (epg-list-keys context names secret)))
501 (if (> (length keys) 1)
502 (epa--select-keys prompt keys)
505 (defun epa--format-fingerprint-1 (fingerprint unit-size block-size)
509 (goto-char (point-min))
511 (goto-char (+ (point) unit-size))
513 (setq unit (1+ unit))
514 (insert (if (= (% unit block-size) 0) " " " ")))
517 (defun epa--format-fingerprint (fingerprint)
519 (if (= (length fingerprint) 40)
520 ;; 1234 5678 9ABC DEF0 1234 5678 9ABC DEF0 1234 5678
521 (epa--format-fingerprint-1 fingerprint 4 5)
522 ;; 12 34 56 78 9A BC DE F0 12 34 56 78 9A BC DE F0
523 (epa--format-fingerprint-1 fingerprint 2 8))))
525 (defun epa--show-key (key)
526 (let* ((primary-sub-key (car (epg-key-sub-key-list key)))
527 (entry (assoc (epg-sub-key-id primary-sub-key)
528 epa-key-buffer-alist))
529 (inhibit-read-only t)
533 (setq entry (cons (epg-sub-key-id primary-sub-key) nil)
534 epa-key-buffer-alist (cons entry epa-key-buffer-alist)))
535 (unless (and (cdr entry)
536 (buffer-live-p (cdr entry)))
537 (setcdr entry (generate-new-buffer
538 (format "*Key*%s" (epg-sub-key-id primary-sub-key)))))
539 (set-buffer (cdr entry))
541 (make-local-variable 'epa-key)
544 (setq pointer (epg-key-user-id-list key))
548 (if (epg-user-id-validity (car pointer))
550 (car (rassq (epg-user-id-validity (car pointer))
551 epg-key-validity-alist)))
554 (if (stringp (epg-user-id-string (car pointer)))
555 (epg-user-id-string (car pointer))
556 (epg-decode-dn (epg-user-id-string (car pointer))))
558 (setq pointer (cdr pointer)))
559 (setq pointer (epg-key-sub-key-list key))
562 (if (epg-sub-key-validity (car pointer))
564 (car (rassq (epg-sub-key-validity (car pointer))
565 epg-key-validity-alist)))
568 (epg-sub-key-id (car pointer))
571 (epg-sub-key-length (car pointer)))
573 (cdr (assq (epg-sub-key-algorithm (car pointer))
574 epg-pubkey-algorithm-alist))
576 (format-time-string "%Y-%m-%d"
577 (epg-sub-key-creation-time (car pointer)))
578 (if (epg-sub-key-expiration-time (car pointer))
579 (format "\n\tExpires: %s"
580 (format-time-string "%Y-%m-%d"
581 (epg-sub-key-expiration-time
585 (mapconcat #'symbol-name
586 (epg-sub-key-capability (car pointer))
589 (epa--format-fingerprint (epg-sub-key-fingerprint (car pointer)))
591 (setq pointer (cdr pointer)))
592 (goto-char (point-min))
593 (pop-to-buffer (current-buffer))))
595 (defun epa-display-info (info)
596 (if epa-popup-info-window
597 (save-selected-window
598 (unless (and epa-info-buffer (buffer-live-p epa-info-buffer))
599 (setq epa-info-buffer (generate-new-buffer "*Info*")))
600 (if (get-buffer-window epa-info-buffer)
601 (delete-window (get-buffer-window epa-info-buffer)))
603 (set-buffer epa-info-buffer)
604 (let ((inhibit-read-only t)
609 (goto-char (point-min)))
610 (if (> (window-height)
611 epa-info-window-height)
612 (set-window-buffer (split-window nil (- (window-height)
613 epa-info-window-height))
615 (pop-to-buffer epa-info-buffer)
616 (if (> (window-height) epa-info-window-height)
617 (shrink-window (- (window-height) epa-info-window-height)))))
618 (message "%s" info)))
620 (defun epa-display-verify-result (verify-result)
621 (epa-display-info (epg-verify-result-to-string verify-result)))
622 (make-obsolete 'epa-display-verify-result 'epa-display-info)
624 (defun epa-passphrase-callback-function (context key-id handback)
626 (read-passwd "Passphrase for symmetric encryption: "
627 (eq (epg-context-operation context) 'encrypt))
630 "Passphrase for PIN: "
631 (let ((entry (assoc key-id epg-user-id-alist)))
633 (format "Passphrase for %s %s: " key-id (cdr entry))
634 (format "Passphrase for %s: " key-id)))))))
636 (defun epa-progress-callback-function (context what char current total
638 (message "%s%d%% (%d/%d)" (or handback
640 (if (> total 0) (floor (* (/ current (float total)) 100)) 0)
644 (defun epa-decrypt-file (file)
646 (interactive "fFile: ")
647 (setq file (expand-file-name file))
648 (let* ((default-name (file-name-sans-extension file))
649 (plain (expand-file-name
651 (concat "To file (default "
652 (file-name-nondirectory default-name)
654 (file-name-directory default-name)
656 (context (epg-make-context epa-protocol)))
657 (epg-context-set-passphrase-callback context
658 #'epa-passphrase-callback-function)
659 (epg-context-set-progress-callback context
660 #'epa-progress-callback-function
661 (format "Decrypting %s..."
662 (file-name-nondirectory file)))
663 (message "Decrypting %s..." (file-name-nondirectory file))
664 (epg-decrypt-file context file plain)
665 (message "Decrypting %s...wrote %s" (file-name-nondirectory file)
666 (file-name-nondirectory plain))
667 (if (epg-context-result-for context 'verify)
668 (epa-display-info (epg-verify-result-to-string
669 (epg-context-result-for context 'verify))))))
672 (defun epa-verify-file (file)
674 (interactive "fFile: ")
675 (setq file (expand-file-name file))
676 (let* ((context (epg-make-context epa-protocol))
677 (plain (if (equal (file-name-extension file) "sig")
678 (file-name-sans-extension file))))
679 (epg-context-set-progress-callback context
680 #'epa-progress-callback-function
681 (format "Verifying %s..."
682 (file-name-nondirectory file)))
683 (message "Verifying %s..." (file-name-nondirectory file))
684 (epg-verify-file context file plain)
685 (message "Verifying %s...done" (file-name-nondirectory file))
686 (if (epg-context-result-for context 'verify)
687 (epa-display-info (epg-verify-result-to-string
688 (epg-context-result-for context 'verify))))))
690 (defun epa--read-signature-type ()
693 (message "Signature type (n,c,d,?) ")
698 (setq type 'detached))
700 (with-output-to-temp-buffer "*Help*"
702 (set-buffer standard-output)
704 n - Create a normal signature
705 c - Create a cleartext signature
706 d - Create a detached signature
710 (setq type 'normal))))))
713 (defun epa-sign-file (file signers mode)
714 "Sign FILE by SIGNERS keys selected."
716 (let ((verbose current-prefix-arg))
717 (list (expand-file-name (read-file-name "File: "))
719 (epa-select-keys (epg-make-context epa-protocol)
720 "Select keys for signing.
721 If no one is selected, default secret key is used. "
724 (epa--read-signature-type)
726 (let ((signature (concat file
727 (if (eq epa-protocol 'OpenPGP)
730 '(nil t normal detached))))
732 (if (memq mode '(t detached))
735 (if (memq mode '(t detached))
738 (context (epg-make-context epa-protocol)))
739 (epg-context-set-armor context epa-armor)
740 (epg-context-set-textmode context epa-textmode)
741 (epg-context-set-signers context signers)
742 (epg-context-set-passphrase-callback context
743 #'epa-passphrase-callback-function)
744 (epg-context-set-progress-callback context
745 #'epa-progress-callback-function
746 (format "Signing %s..."
747 (file-name-nondirectory file)))
748 (message "Signing %s..." (file-name-nondirectory file))
749 (epg-sign-file context file signature mode)
750 (message "Signing %s...wrote %s" (file-name-nondirectory file)
751 (file-name-nondirectory signature))))
754 (defun epa-encrypt-file (file recipients)
755 "Encrypt FILE for RECIPIENTS."
757 (list (expand-file-name (read-file-name "File: "))
758 (epa-select-keys (epg-make-context epa-protocol)
759 "Select recipients for encryption.
760 If no one is selected, symmetric encryption will be performed. ")))
761 (let ((cipher (concat file (if (eq epa-protocol 'OpenPGP)
762 (if epa-armor ".asc" ".gpg")
764 (context (epg-make-context epa-protocol)))
765 (epg-context-set-armor context epa-armor)
766 (epg-context-set-textmode context epa-textmode)
767 (epg-context-set-passphrase-callback context
768 #'epa-passphrase-callback-function)
769 (epg-context-set-progress-callback context
770 #'epa-progress-callback-function
771 (format "Encrypting %s..."
772 (file-name-nondirectory file)))
773 (message "Encrypting %s..." (file-name-nondirectory file))
774 (epg-encrypt-file context file recipients cipher)
775 (message "Encrypting %s...wrote %s" (file-name-nondirectory file)
776 (file-name-nondirectory cipher))))
779 (defun epa-decrypt-region (start end)
780 "Decrypt the current region between START and END.
782 Don't use this command in Lisp programs!"
785 (let ((context (epg-make-context epa-protocol))
787 (epg-context-set-passphrase-callback context
788 #'epa-passphrase-callback-function)
789 (epg-context-set-progress-callback context
790 #'epa-progress-callback-function
792 (message "Decrypting...")
793 (setq plain (epg-decrypt-string context (buffer-substring start end)))
794 (message "Decrypting...done")
795 (setq plain (epa--decode-coding-string
797 (or coding-system-for-read
798 (get-text-property start 'epa-coding-system-used))))
799 (if (y-or-n-p "Replace the original text? ")
800 (let ((inhibit-read-only t)
802 (delete-region start end)
805 (with-output-to-temp-buffer "*Temp*"
806 (set-buffer standard-output)
809 (if (epg-context-result-for context 'verify)
810 (epa-display-info (epg-verify-result-to-string
811 (epg-context-result-for context 'verify)))))))
813 (defun epa--find-coding-system-for-mime-charset (mime-charset)
814 (if (featurep 'xemacs)
815 (if (fboundp 'find-coding-system)
816 (find-coding-system mime-charset))
817 (let ((pointer (coding-system-list)))
819 (eq (coding-system-get (car pointer) 'mime-charset)
821 (setq pointer (cdr pointer)))
825 (defun epa-decrypt-armor-in-region (start end)
826 "Decrypt OpenPGP armors in the current region between START and END.
828 Don't use this command in Lisp programs!"
832 (narrow-to-region start end)
834 (let (armor-start armor-end)
835 (while (re-search-forward "-----BEGIN PGP MESSAGE-----$" nil t)
836 (setq armor-start (match-beginning 0)
837 armor-end (re-search-forward "^-----END PGP MESSAGE-----$"
840 (error "No armor tail"))
841 (goto-char armor-start)
842 (let ((coding-system-for-read
843 (or coding-system-for-read
844 (if (re-search-forward "^Charset: \\(.*\\)" armor-end t)
845 (epa--find-coding-system-for-mime-charset
846 (intern (downcase (match-string 1))))))))
847 (goto-char armor-end)
848 (epa-decrypt-region armor-start armor-end)))))))
851 (defun epa-verify-region (start end)
852 "Verify the current region between START and END.
854 Don't use this command in Lisp programs!"
856 (let ((context (epg-make-context epa-protocol))
858 (epg-context-set-progress-callback context
859 #'epa-progress-callback-function
861 (message "Verifying...")
862 (setq plain (epg-verify-string
864 (epa--encode-coding-string
865 (buffer-substring start end)
866 (or coding-system-for-write
867 (get-text-property start 'epa-coding-system-used)))))
868 (message "Verifying...done")
869 (setq plain (epa--decode-coding-string
871 (or coding-system-for-read
872 (get-text-property start 'epa-coding-system-used))))
873 (if (y-or-n-p "Replace the original text? ")
874 (let ((inhibit-read-only t)
876 (delete-region start end)
879 (with-output-to-temp-buffer "*Temp*"
880 (set-buffer standard-output)
883 (if (epg-context-result-for context 'verify)
884 (epa-display-info (epg-verify-result-to-string
885 (epg-context-result-for context 'verify))))))
888 (defun epa-verify-cleartext-in-region (start end)
889 "Verify OpenPGP cleartext signed messages in the current region
890 between START and END.
892 Don't use this command in Lisp programs!"
896 (narrow-to-region start end)
898 (let (cleartext-start cleartext-end)
899 (while (re-search-forward "-----BEGIN PGP SIGNED MESSAGE-----$"
901 (setq cleartext-start (match-beginning 0))
902 (unless (re-search-forward "^-----BEGIN PGP SIGNATURE-----$"
904 (error "Invalid cleartext signed message"))
905 (setq cleartext-end (re-search-forward
906 "^-----END PGP SIGNATURE-----$"
908 (unless cleartext-end
909 (error "No cleartext tail"))
910 (epa-verify-region cleartext-start cleartext-end))))))
913 (if (fboundp 'select-safe-coding-system)
914 (defalias 'epa--select-safe-coding-system 'select-safe-coding-system)
915 (defun epa--select-safe-coding-system (from to)
916 buffer-file-coding-system)))
919 (defun epa-sign-region (start end signers mode)
920 "Sign the current region between START and END by SIGNERS keys selected.
922 Don't use this command in Lisp programs!"
924 (let ((verbose current-prefix-arg))
925 (setq epa-last-coding-system-specified
926 (or coding-system-for-write
927 (epa--select-safe-coding-system
928 (region-beginning) (region-end))))
929 (list (region-beginning) (region-end)
931 (epa-select-keys (epg-make-context epa-protocol)
932 "Select keys for signing.
933 If no one is selected, default secret key is used. "
936 (epa--read-signature-type)
939 (let ((context (epg-make-context epa-protocol))
941 ;;(epg-context-set-armor context epa-armor)
942 (epg-context-set-armor context t)
943 ;;(epg-context-set-textmode context epa-textmode)
944 (epg-context-set-textmode context t)
945 (epg-context-set-signers context signers)
946 (epg-context-set-passphrase-callback context
947 #'epa-passphrase-callback-function)
948 (epg-context-set-progress-callback context
949 #'epa-progress-callback-function
951 (message "Signing...")
952 (setq signature (epg-sign-string context
953 (epa--encode-coding-string
954 (buffer-substring start end)
955 epa-last-coding-system-specified)
957 (message "Signing...done")
958 (delete-region start end)
960 (add-text-properties (point)
962 (insert (epa--decode-coding-string
964 (or coding-system-for-read
965 epa-last-coding-system-specified)))
967 (list 'epa-coding-system-used
968 epa-last-coding-system-specified
975 (if (fboundp 'derived-mode-p)
976 (defalias 'epa--derived-mode-p 'derived-mode-p)
977 (defun epa--derived-mode-p (&rest modes)
978 "Non-nil if the current major mode is derived from one of MODES.
979 Uses the `derived-mode-parent' property of the symbol to trace backwards."
980 (let ((parent major-mode))
981 (while (and (not (memq parent modes))
982 (setq parent (get parent 'derived-mode-parent))))
986 (defun epa-encrypt-region (start end recipients sign signers)
987 "Encrypt the current region between START and END for RECIPIENTS.
989 Don't use this command in Lisp programs!"
991 (let ((verbose current-prefix-arg)
992 (context (epg-make-context epa-protocol))
994 (setq epa-last-coding-system-specified
995 (or coding-system-for-write
996 (epa--select-safe-coding-system
997 (region-beginning) (region-end))))
998 (list (region-beginning) (region-end)
999 (epa-select-keys context
1000 "Select recipients for encryption.
1001 If no one is selected, symmetric encryption will be performed. ")
1002 (setq sign (if verbose (y-or-n-p "Sign? ")))
1004 (epa-select-keys context
1005 "Select keys for signing. ")))))
1007 (let ((context (epg-make-context epa-protocol))
1009 ;;(epg-context-set-armor context epa-armor)
1010 (epg-context-set-armor context t)
1011 ;;(epg-context-set-textmode context epa-textmode)
1012 (epg-context-set-textmode context t)
1014 (epg-context-set-signers context signers))
1015 (epg-context-set-passphrase-callback context
1016 #'epa-passphrase-callback-function)
1017 (epg-context-set-progress-callback context
1018 #'epa-progress-callback-function
1020 (message "Encrypting...")
1021 (setq cipher (epg-encrypt-string context
1022 (epa--encode-coding-string
1023 (buffer-substring start end)
1024 epa-last-coding-system-specified)
1027 (message "Encrypting...done")
1028 (delete-region start end)
1030 (add-text-properties (point)
1034 (list 'epa-coding-system-used
1035 epa-last-coding-system-specified
1042 (defun epa-delete-keys (keys &optional allow-secret)
1043 "Delete selected KEYS.
1045 Don't use this command in Lisp programs!"
1047 (let ((keys (epa--marked-keys)))
1049 (error "No keys selected"))
1051 (eq (nth 1 epa-list-keys-arguments) t))))
1052 (let ((context (epg-make-context epa-protocol)))
1053 (message "Deleting...")
1054 (epg-delete-keys context keys allow-secret)
1055 (message "Deleting...done")
1056 (apply #'epa-list-keys epa-list-keys-arguments)))
1059 (defun epa-import-keys (file)
1060 "Import keys from FILE.
1062 Don't use this command in Lisp programs!"
1063 (interactive "fFile: ")
1064 (setq file (expand-file-name file))
1065 (let ((context (epg-make-context epa-protocol)))
1066 (message "Importing %s..." (file-name-nondirectory file))
1069 (epg-import-keys-from-file context file)
1070 (message "Importing %s...done" (file-name-nondirectory file)))
1072 (message "Importing %s...failed" (file-name-nondirectory file))))
1073 (if (epg-context-result-for context 'import)
1074 (epa-display-info (epg-import-result-to-string
1075 (epg-context-result-for context 'import))))
1076 (if (eq major-mode 'epa-key-list-mode)
1077 (apply #'epa-list-keys epa-list-keys-arguments))))
1080 (defun epa-import-keys-region (start end)
1081 "Import keys from the region.
1083 Don't use this command in Lisp programs!"
1085 (let ((context (epg-make-context epa-protocol)))
1086 (message "Importing...")
1089 (epg-import-keys-from-string context (buffer-substring start end))
1090 (message "Importing...done"))
1092 (message "Importing...failed")))
1093 (if (epg-context-result-for context 'import)
1094 (epa-display-info (epg-import-result-to-string
1095 (epg-context-result-for context 'import))))))
1098 (defun epa-import-armor-in-region (start end)
1099 "Import keys in the OpenPGP armor format in the current region
1100 between START and END.
1102 Don't use this command in Lisp programs!"
1106 (narrow-to-region start end)
1108 (let (armor-start armor-end)
1109 (while (re-search-forward
1110 "-----BEGIN \\(PGP \\(PUBLIC\\|PRIVATE\\) KEY BLOCK\\)-----$"
1112 (setq armor-start (match-beginning 0)
1113 armor-end (re-search-forward
1114 (concat "^-----END " (match-string 1) "-----$")
1117 (error "No armor tail"))
1118 (epa-import-keys-region armor-start armor-end))))))
1121 (defun epa-export-keys (keys file)
1122 "Export selected KEYS to FILE.
1124 Don't use this command in Lisp programs!"
1126 (let ((keys (epa--marked-keys))
1129 (error "No keys selected"))
1132 (concat (epg-sub-key-id (car (epg-key-sub-key-list (car keys))))
1133 (if epa-armor ".asc" ".gpg"))
1138 (concat "To file (default "
1139 (file-name-nondirectory default-name)
1141 (file-name-directory default-name)
1143 (let ((context (epg-make-context epa-protocol)))
1144 (epg-context-set-armor context epa-armor)
1145 (message "Exporting to %s..." (file-name-nondirectory file))
1146 (epg-export-keys-to-file context keys file)
1147 (message "Exporting to %s...done" (file-name-nondirectory file))))
1150 (defun epa-insert-keys (keys)
1151 "Insert selected KEYS after the point.
1153 Don't use this command in Lisp programs!"
1155 (list (epa-select-keys (epg-make-context epa-protocol)
1156 "Select keys to export. ")))
1157 (let ((context (epg-make-context epa-protocol)))
1158 ;;(epg-context-set-armor context epa-armor)
1159 (epg-context-set-armor context t)
1160 (insert (epg-export-keys-to-string context keys))))
1163 (defun epa-sign-keys (keys &optional local)
1164 "Sign selected KEYS.
1165 If a prefix-arg is specified, the signature is marked as non exportable.
1167 Don't use this command in Lisp programs!"
1169 (let ((keys (epa--marked-keys)))
1171 (error "No keys selected"))
1172 (list keys current-prefix-arg)))
1173 (let ((context (epg-make-context epa-protocol)))
1174 (epg-context-set-passphrase-callback context
1175 #'epa-passphrase-callback-function)
1176 (epg-context-set-progress-callback context
1177 #'epa-progress-callback-function
1179 (message "Signing keys...")
1180 (epg-sign-keys context keys local)
1181 (message "Signing keys...done")))
1182 (make-obsolete 'epa-sign-keys "Do not use.")
1186 ;;; epa.el ends here