1 ;;; epa.el --- the EasyPG Assistant
2 ;; Copyright (C) 2006, 2007, 2008 Free Software Foundation, Inc.
4 ;; Author: Daiki Ueno <ueno@unixuser.org>
5 ;; Keywords: PGP, GnuPG
7 ;; This file is part of GNU Emacs.
9 ;; GNU Emacs 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 3, or (at your option)
14 ;; GNU Emacs 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--show-key (key)
504 (let* ((primary-sub-key (car (epg-key-sub-key-list key)))
505 (entry (assoc (epg-sub-key-id primary-sub-key)
506 epa-key-buffer-alist))
507 (inhibit-read-only t)
511 (setq entry (cons (epg-sub-key-id primary-sub-key) nil)
512 epa-key-buffer-alist (cons entry epa-key-buffer-alist)))
513 (unless (and (cdr entry)
514 (buffer-live-p (cdr entry)))
515 (setcdr entry (generate-new-buffer
516 (format "*Key*%s" (epg-sub-key-id primary-sub-key)))))
517 (set-buffer (cdr entry))
519 (make-local-variable 'epa-key)
522 (setq pointer (epg-key-user-id-list key))
526 (if (epg-user-id-validity (car pointer))
528 (car (rassq (epg-user-id-validity (car pointer))
529 epg-key-validity-alist)))
532 (if (stringp (epg-user-id-string (car pointer)))
533 (epg-user-id-string (car pointer))
534 (epg-decode-dn (epg-user-id-string (car pointer))))
536 (setq pointer (cdr pointer)))
537 (setq pointer (epg-key-sub-key-list key))
540 (if (epg-sub-key-validity (car pointer))
542 (car (rassq (epg-sub-key-validity (car pointer))
543 epg-key-validity-alist)))
546 (epg-sub-key-id (car pointer))
549 (epg-sub-key-length (car pointer)))
551 (cdr (assq (epg-sub-key-algorithm (car pointer))
552 epg-pubkey-algorithm-alist))
555 (format-time-string "%Y-%m-%d"
556 (epg-sub-key-creation-time (car pointer)))
557 (error "????-??-??"))
558 (if (epg-sub-key-expiration-time (car pointer))
559 (format "\n\tExpires: %s"
561 (format-time-string "%Y-%m-%d"
562 (epg-sub-key-expiration-time
564 (error "????-??-??")))
567 (mapconcat #'symbol-name
568 (epg-sub-key-capability (car pointer))
571 (epg-sub-key-fingerprint (car pointer))
573 (setq pointer (cdr pointer)))
574 (goto-char (point-min))
575 (pop-to-buffer (current-buffer))))
577 (defun epa-display-info (info)
578 (if epa-popup-info-window
579 (save-selected-window
580 (unless (and epa-info-buffer (buffer-live-p epa-info-buffer))
581 (setq epa-info-buffer (generate-new-buffer "*Info*")))
582 (if (get-buffer-window epa-info-buffer)
583 (delete-window (get-buffer-window epa-info-buffer)))
585 (set-buffer epa-info-buffer)
586 (let ((inhibit-read-only t)
591 (goto-char (point-min)))
592 (if (> (window-height)
593 epa-info-window-height)
594 (set-window-buffer (split-window nil (- (window-height)
595 epa-info-window-height))
597 (pop-to-buffer epa-info-buffer)
598 (if (> (window-height) epa-info-window-height)
599 (shrink-window (- (window-height) epa-info-window-height)))))
600 (message "%s" info)))
602 (defun epa-display-verify-result (verify-result)
603 (epa-display-info (epg-verify-result-to-string verify-result)))
604 (make-obsolete 'epa-display-verify-result 'epa-display-info)
606 (defun epa-passphrase-callback-function (context key-id handback)
608 (read-passwd "Passphrase for symmetric encryption: "
609 (eq (epg-context-operation context) 'encrypt))
612 "Passphrase for PIN: "
613 (let ((entry (assoc key-id epg-user-id-alist)))
615 (format "Passphrase for %s %s: " key-id (cdr entry))
616 (format "Passphrase for %s: " key-id)))))))
618 (defun epa-progress-callback-function (context what char current total
620 (message "%s%d%% (%d/%d)" (or handback
622 (if (> total 0) (floor (* (/ current (float total)) 100)) 0)
626 (defun epa-decrypt-file (file)
628 (interactive "fFile: ")
629 (setq file (expand-file-name file))
630 (let* ((default-name (file-name-sans-extension file))
631 (plain (expand-file-name
633 (concat "To file (default "
634 (file-name-nondirectory default-name)
636 (file-name-directory default-name)
638 (context (epg-make-context epa-protocol)))
639 (epg-context-set-passphrase-callback context
640 #'epa-passphrase-callback-function)
641 (epg-context-set-progress-callback context
643 #'epa-progress-callback-function
644 (format "Decrypting %s..."
645 (file-name-nondirectory file))))
646 (message "Decrypting %s..." (file-name-nondirectory file))
647 (epg-decrypt-file context file plain)
648 (message "Decrypting %s...wrote %s" (file-name-nondirectory file)
649 (file-name-nondirectory plain))
650 (if (epg-context-result-for context 'verify)
651 (epa-display-info (epg-verify-result-to-string
652 (epg-context-result-for context 'verify))))))
655 (defun epa-verify-file (file)
657 (interactive "fFile: ")
658 (setq file (expand-file-name file))
659 (let* ((context (epg-make-context epa-protocol))
660 (plain (if (equal (file-name-extension file) "sig")
661 (file-name-sans-extension file))))
662 (epg-context-set-progress-callback context
664 #'epa-progress-callback-function
665 (format "Verifying %s..."
666 (file-name-nondirectory file))))
667 (message "Verifying %s..." (file-name-nondirectory file))
668 (epg-verify-file context file plain)
669 (message "Verifying %s...done" (file-name-nondirectory file))
670 (if (epg-context-result-for context 'verify)
671 (epa-display-info (epg-verify-result-to-string
672 (epg-context-result-for context 'verify))))))
674 (defun epa--read-signature-type ()
677 (message "Signature type (n,c,d,?) ")
682 (setq type 'detached))
684 (with-output-to-temp-buffer "*Help*"
686 (set-buffer standard-output)
688 n - Create a normal signature
689 c - Create a cleartext signature
690 d - Create a detached signature
694 (setq type 'normal))))))
697 (defun epa-sign-file (file signers mode)
698 "Sign FILE by SIGNERS keys selected."
700 (let ((verbose current-prefix-arg))
701 (list (expand-file-name (read-file-name "File: "))
703 (epa-select-keys (epg-make-context epa-protocol)
704 "Select keys for signing.
705 If no one is selected, default secret key is used. "
708 (epa--read-signature-type)
710 (let ((signature (concat file
711 (if (eq epa-protocol 'OpenPGP)
714 '(nil t normal detached))))
716 (if (memq mode '(t detached))
719 (if (memq mode '(t detached))
722 (context (epg-make-context epa-protocol)))
723 (epg-context-set-armor context epa-armor)
724 (epg-context-set-textmode context epa-textmode)
725 (epg-context-set-signers context signers)
726 (epg-context-set-passphrase-callback context
727 #'epa-passphrase-callback-function)
728 (epg-context-set-progress-callback context
730 #'epa-progress-callback-function
731 (format "Signing %s..."
732 (file-name-nondirectory file))))
733 (message "Signing %s..." (file-name-nondirectory file))
734 (epg-sign-file context file signature mode)
735 (message "Signing %s...wrote %s" (file-name-nondirectory file)
736 (file-name-nondirectory signature))))
739 (defun epa-encrypt-file (file recipients)
740 "Encrypt FILE for RECIPIENTS."
742 (list (expand-file-name (read-file-name "File: "))
743 (epa-select-keys (epg-make-context epa-protocol)
744 "Select recipients for encryption.
745 If no one is selected, symmetric encryption will be performed. ")))
746 (let ((cipher (concat file (if (eq epa-protocol 'OpenPGP)
747 (if epa-armor ".asc" ".gpg")
749 (context (epg-make-context epa-protocol)))
750 (epg-context-set-armor context epa-armor)
751 (epg-context-set-textmode context epa-textmode)
752 (epg-context-set-passphrase-callback context
753 #'epa-passphrase-callback-function)
754 (epg-context-set-progress-callback context
756 #'epa-progress-callback-function
757 (format "Encrypting %s..."
758 (file-name-nondirectory file))))
759 (message "Encrypting %s..." (file-name-nondirectory file))
760 (epg-encrypt-file context file recipients cipher)
761 (message "Encrypting %s...wrote %s" (file-name-nondirectory file)
762 (file-name-nondirectory cipher))))
765 (defun epa-decrypt-region (start end)
766 "Decrypt the current region between START and END.
768 Don't use this command in Lisp programs!"
771 (let ((context (epg-make-context epa-protocol))
773 (epg-context-set-passphrase-callback context
774 #'epa-passphrase-callback-function)
775 (epg-context-set-progress-callback context
777 #'epa-progress-callback-function
779 (message "Decrypting...")
780 (setq plain (epg-decrypt-string context (buffer-substring start end)))
781 (message "Decrypting...done")
782 (setq plain (epa--decode-coding-string
784 (or coding-system-for-read
785 (get-text-property start 'epa-coding-system-used))))
786 (if (y-or-n-p "Replace the original text? ")
787 (let ((inhibit-read-only t)
789 (delete-region start end)
792 (with-output-to-temp-buffer "*Temp*"
793 (set-buffer standard-output)
796 (if (epg-context-result-for context 'verify)
797 (epa-display-info (epg-verify-result-to-string
798 (epg-context-result-for context 'verify)))))))
800 (defun epa--find-coding-system-for-mime-charset (mime-charset)
801 (if (featurep 'xemacs)
802 (if (fboundp 'find-coding-system)
803 (find-coding-system mime-charset))
804 (let ((pointer (coding-system-list)))
806 (eq (coding-system-get (car pointer) 'mime-charset)
808 (setq pointer (cdr pointer)))
812 (defun epa-decrypt-armor-in-region (start end)
813 "Decrypt OpenPGP armors in the current region between START and END.
815 Don't use this command in Lisp programs!"
819 (narrow-to-region start end)
821 (let (armor-start armor-end)
822 (while (re-search-forward "-----BEGIN PGP MESSAGE-----$" nil t)
823 (setq armor-start (match-beginning 0)
824 armor-end (re-search-forward "^-----END PGP MESSAGE-----$"
827 (error "No armor tail"))
828 (goto-char armor-start)
829 (let ((coding-system-for-read
830 (or coding-system-for-read
831 (if (re-search-forward "^Charset: \\(.*\\)" armor-end t)
832 (epa--find-coding-system-for-mime-charset
833 (intern (downcase (match-string 1))))))))
834 (goto-char armor-end)
835 (epa-decrypt-region armor-start armor-end)))))))
838 (defun epa-verify-region (start end)
839 "Verify the current region between START and END.
841 Don't use this command in Lisp programs!"
843 (let ((context (epg-make-context epa-protocol))
845 (epg-context-set-progress-callback context
847 #'epa-progress-callback-function
849 (message "Verifying...")
850 (setq plain (epg-verify-string
852 (epa--encode-coding-string
853 (buffer-substring start end)
854 (or coding-system-for-write
855 (get-text-property start 'epa-coding-system-used)))))
856 (message "Verifying...done")
857 (setq plain (epa--decode-coding-string
859 (or coding-system-for-read
860 (get-text-property start 'epa-coding-system-used))))
861 (if (y-or-n-p "Replace the original text? ")
862 (let ((inhibit-read-only t)
864 (delete-region start end)
867 (with-output-to-temp-buffer "*Temp*"
868 (set-buffer standard-output)
871 (if (epg-context-result-for context 'verify)
872 (epa-display-info (epg-verify-result-to-string
873 (epg-context-result-for context 'verify))))))
876 (defun epa-verify-cleartext-in-region (start end)
877 "Verify OpenPGP cleartext signed messages in the current region
878 between START and END.
880 Don't use this command in Lisp programs!"
884 (narrow-to-region start end)
886 (let (cleartext-start cleartext-end)
887 (while (re-search-forward "-----BEGIN PGP SIGNED MESSAGE-----$"
889 (setq cleartext-start (match-beginning 0))
890 (unless (re-search-forward "^-----BEGIN PGP SIGNATURE-----$"
892 (error "Invalid cleartext signed message"))
893 (setq cleartext-end (re-search-forward
894 "^-----END PGP SIGNATURE-----$"
896 (unless cleartext-end
897 (error "No cleartext tail"))
898 (epa-verify-region cleartext-start cleartext-end))))))
901 (if (fboundp 'select-safe-coding-system)
902 (defalias 'epa--select-safe-coding-system 'select-safe-coding-system)
903 (defun epa--select-safe-coding-system (from to)
904 buffer-file-coding-system)))
907 (defun epa-sign-region (start end signers mode)
908 "Sign the current region between START and END by SIGNERS keys selected.
910 Don't use this command in Lisp programs!"
912 (let ((verbose current-prefix-arg))
913 (setq epa-last-coding-system-specified
914 (or coding-system-for-write
915 (epa--select-safe-coding-system
916 (region-beginning) (region-end))))
917 (list (region-beginning) (region-end)
919 (epa-select-keys (epg-make-context epa-protocol)
920 "Select keys for signing.
921 If no one is selected, default secret key is used. "
924 (epa--read-signature-type)
927 (let ((context (epg-make-context epa-protocol))
929 ;;(epg-context-set-armor context epa-armor)
930 (epg-context-set-armor context t)
931 ;;(epg-context-set-textmode context epa-textmode)
932 (epg-context-set-textmode context t)
933 (epg-context-set-signers context signers)
934 (epg-context-set-passphrase-callback context
935 #'epa-passphrase-callback-function)
936 (epg-context-set-progress-callback context
938 #'epa-progress-callback-function
940 (message "Signing...")
941 (setq signature (epg-sign-string context
942 (epa--encode-coding-string
943 (buffer-substring start end)
944 epa-last-coding-system-specified)
946 (message "Signing...done")
947 (delete-region start end)
949 (add-text-properties (point)
951 (insert (epa--decode-coding-string
953 (or coding-system-for-read
954 epa-last-coding-system-specified)))
956 (list 'epa-coding-system-used
957 epa-last-coding-system-specified
964 (if (fboundp 'derived-mode-p)
965 (defalias 'epa--derived-mode-p 'derived-mode-p)
966 (defun epa--derived-mode-p (&rest modes)
967 "Non-nil if the current major mode is derived from one of MODES.
968 Uses the `derived-mode-parent' property of the symbol to trace backwards."
969 (let ((parent major-mode))
970 (while (and (not (memq parent modes))
971 (setq parent (get parent 'derived-mode-parent))))
975 (defun epa-encrypt-region (start end recipients sign signers)
976 "Encrypt the current region between START and END for RECIPIENTS.
978 Don't use this command in Lisp programs!"
980 (let ((verbose current-prefix-arg)
981 (context (epg-make-context epa-protocol))
983 (setq epa-last-coding-system-specified
984 (or coding-system-for-write
985 (epa--select-safe-coding-system
986 (region-beginning) (region-end))))
987 (list (region-beginning) (region-end)
988 (epa-select-keys context
989 "Select recipients for encryption.
990 If no one is selected, symmetric encryption will be performed. ")
991 (setq sign (if verbose (y-or-n-p "Sign? ")))
993 (epa-select-keys context
994 "Select keys for signing. ")))))
996 (let ((context (epg-make-context epa-protocol))
998 ;;(epg-context-set-armor context epa-armor)
999 (epg-context-set-armor context t)
1000 ;;(epg-context-set-textmode context epa-textmode)
1001 (epg-context-set-textmode context t)
1003 (epg-context-set-signers context signers))
1004 (epg-context-set-passphrase-callback context
1005 #'epa-passphrase-callback-function)
1006 (epg-context-set-progress-callback context
1008 #'epa-progress-callback-function
1010 (message "Encrypting...")
1011 (setq cipher (epg-encrypt-string context
1012 (epa--encode-coding-string
1013 (buffer-substring start end)
1014 epa-last-coding-system-specified)
1017 (message "Encrypting...done")
1018 (delete-region start end)
1020 (add-text-properties (point)
1024 (list 'epa-coding-system-used
1025 epa-last-coding-system-specified
1032 (defun epa-delete-keys (keys &optional allow-secret)
1033 "Delete selected KEYS.
1035 Don't use this command in Lisp programs!"
1037 (let ((keys (epa--marked-keys)))
1039 (error "No keys selected"))
1041 (eq (nth 1 epa-list-keys-arguments) t))))
1042 (let ((context (epg-make-context epa-protocol)))
1043 (message "Deleting...")
1044 (epg-delete-keys context keys allow-secret)
1045 (message "Deleting...done")
1046 (apply #'epa-list-keys epa-list-keys-arguments)))
1049 (defun epa-import-keys (file)
1050 "Import keys from FILE.
1052 Don't use this command in Lisp programs!"
1053 (interactive "fFile: ")
1054 (setq file (expand-file-name file))
1055 (let ((context (epg-make-context epa-protocol)))
1056 (message "Importing %s..." (file-name-nondirectory file))
1059 (epg-import-keys-from-file context file)
1060 (message "Importing %s...done" (file-name-nondirectory file)))
1062 (message "Importing %s...failed" (file-name-nondirectory file))))
1063 (if (epg-context-result-for context 'import)
1064 (epa-display-info (epg-import-result-to-string
1065 (epg-context-result-for context 'import))))
1066 (if (eq major-mode 'epa-key-list-mode)
1067 (apply #'epa-list-keys epa-list-keys-arguments))))
1070 (defun epa-import-keys-region (start end)
1071 "Import keys from the region.
1073 Don't use this command in Lisp programs!"
1075 (let ((context (epg-make-context epa-protocol)))
1076 (message "Importing...")
1079 (epg-import-keys-from-string context (buffer-substring start end))
1080 (message "Importing...done"))
1082 (message "Importing...failed")))
1083 (if (epg-context-result-for context 'import)
1084 (epa-display-info (epg-import-result-to-string
1085 (epg-context-result-for context 'import))))))
1088 (defun epa-import-armor-in-region (start end)
1089 "Import keys in the OpenPGP armor format in the current region
1090 between START and END.
1092 Don't use this command in Lisp programs!"
1096 (narrow-to-region start end)
1098 (let (armor-start armor-end)
1099 (while (re-search-forward
1100 "-----BEGIN \\(PGP \\(PUBLIC\\|PRIVATE\\) KEY BLOCK\\)-----$"
1102 (setq armor-start (match-beginning 0)
1103 armor-end (re-search-forward
1104 (concat "^-----END " (match-string 1) "-----$")
1107 (error "No armor tail"))
1108 (epa-import-keys-region armor-start armor-end))))))
1111 (defun epa-export-keys (keys file)
1112 "Export selected KEYS to FILE.
1114 Don't use this command in Lisp programs!"
1116 (let ((keys (epa--marked-keys))
1119 (error "No keys selected"))
1122 (concat (epg-sub-key-id (car (epg-key-sub-key-list (car keys))))
1123 (if epa-armor ".asc" ".gpg"))
1128 (concat "To file (default "
1129 (file-name-nondirectory default-name)
1131 (file-name-directory default-name)
1133 (let ((context (epg-make-context epa-protocol)))
1134 (epg-context-set-armor context epa-armor)
1135 (message "Exporting to %s..." (file-name-nondirectory file))
1136 (epg-export-keys-to-file context keys file)
1137 (message "Exporting to %s...done" (file-name-nondirectory file))))
1140 (defun epa-insert-keys (keys)
1141 "Insert selected KEYS after the point.
1143 Don't use this command in Lisp programs!"
1145 (list (epa-select-keys (epg-make-context epa-protocol)
1146 "Select keys to export. ")))
1147 (let ((context (epg-make-context epa-protocol)))
1148 ;;(epg-context-set-armor context epa-armor)
1149 (epg-context-set-armor context t)
1150 (insert (epg-export-keys-to-string context keys))))
1152 ;; (defun epa-sign-keys (keys &optional local)
1153 ;; "Sign selected KEYS.
1154 ;; If a prefix-arg is specified, the signature is marked as non exportable.
1156 ;; Don't use this command in Lisp programs!"
1158 ;; (let ((keys (epa--marked-keys)))
1160 ;; (error "No keys selected"))
1161 ;; (list keys current-prefix-arg)))
1162 ;; (let ((context (epg-make-context epa-protocol)))
1163 ;; (epg-context-set-passphrase-callback context
1164 ;; #'epa-passphrase-callback-function)
1165 ;; (epg-context-set-progress-callback context
1167 ;; #'epa-progress-callback-function
1168 ;; "Signing keys..."))
1169 ;; (message "Signing keys...")
1170 ;; (epg-sign-keys context keys local)
1171 ;; (message "Signing keys...done")))
1172 ;; (make-obsolete 'epa-sign-keys "Do not use.")
1176 ;;; epa.el ends here