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))
574 (format-time-string "%Y-%m-%d"
575 (epg-sub-key-creation-time (car pointer)))
576 (if (epg-sub-key-expiration-time (car pointer))
577 (format "\n\tExpires: %s"
578 (format-time-string "%Y-%m-%d"
579 (epg-sub-key-expiration-time
583 (mapconcat #'symbol-name
584 (epg-sub-key-capability (car pointer))
587 (epa--format-fingerprint (epg-sub-key-fingerprint (car pointer)))
589 (setq pointer (cdr pointer)))
590 (goto-char (point-min))
591 (pop-to-buffer (current-buffer))))
593 (defun epa-display-info (info)
594 (if epa-popup-info-window
595 (save-selected-window
596 (unless (and epa-info-buffer (buffer-live-p epa-info-buffer))
597 (setq epa-info-buffer (generate-new-buffer "*Info*")))
598 (if (get-buffer-window epa-info-buffer)
599 (delete-window (get-buffer-window epa-info-buffer)))
601 (set-buffer epa-info-buffer)
602 (let ((inhibit-read-only t)
607 (goto-char (point-min)))
608 (if (> (window-height)
609 epa-info-window-height)
610 (set-window-buffer (split-window nil (- (window-height)
611 epa-info-window-height))
613 (pop-to-buffer epa-info-buffer)
614 (if (> (window-height) epa-info-window-height)
615 (shrink-window (- (window-height) epa-info-window-height)))))
616 (message "%s" info)))
618 (defun epa-display-verify-result (verify-result)
619 (epa-display-info (epg-verify-result-to-string verify-result)))
620 (make-obsolete 'epa-display-verify-result 'epa-display-info)
622 (defun epa-passphrase-callback-function (context key-id handback)
624 (read-passwd "Passphrase for symmetric encryption: "
625 (eq (epg-context-operation context) 'encrypt))
628 "Passphrase for PIN: "
629 (let ((entry (assoc key-id epg-user-id-alist)))
631 (format "Passphrase for %s %s: " key-id (cdr entry))
632 (format "Passphrase for %s: " key-id)))))))
634 (defun epa-progress-callback-function (context what char current total
636 (message "%s%d%% (%d/%d)" (or handback
638 (if (> total 0) (floor (* (/ current (float total)) 100)) 0)
642 (defun epa-decrypt-file (file)
644 (interactive "fFile: ")
645 (setq file (expand-file-name file))
646 (let* ((default-name (file-name-sans-extension file))
647 (plain (expand-file-name
649 (concat "To file (default "
650 (file-name-nondirectory default-name)
652 (file-name-directory default-name)
654 (context (epg-make-context epa-protocol)))
655 (epg-context-set-passphrase-callback context
656 #'epa-passphrase-callback-function)
657 (epg-context-set-progress-callback context
658 #'epa-progress-callback-function
659 (format "Decrypting %s..."
660 (file-name-nondirectory file)))
661 (message "Decrypting %s..." (file-name-nondirectory file))
662 (epg-decrypt-file context file plain)
663 (message "Decrypting %s...wrote %s" (file-name-nondirectory file)
664 (file-name-nondirectory plain))
665 (if (epg-context-result-for context 'verify)
666 (epa-display-info (epg-verify-result-to-string
667 (epg-context-result-for context 'verify))))))
670 (defun epa-verify-file (file)
672 (interactive "fFile: ")
673 (setq file (expand-file-name file))
674 (let* ((context (epg-make-context epa-protocol))
675 (plain (if (equal (file-name-extension file) "sig")
676 (file-name-sans-extension file))))
677 (epg-context-set-progress-callback context
678 #'epa-progress-callback-function
679 (format "Verifying %s..."
680 (file-name-nondirectory file)))
681 (message "Verifying %s..." (file-name-nondirectory file))
682 (epg-verify-file context file plain)
683 (message "Verifying %s...done" (file-name-nondirectory file))
684 (if (epg-context-result-for context 'verify)
685 (epa-display-info (epg-verify-result-to-string
686 (epg-context-result-for context 'verify))))))
688 (defun epa--read-signature-type ()
691 (message "Signature type (n,c,d,?) ")
696 (setq type 'detached))
698 (with-output-to-temp-buffer "*Help*"
700 (set-buffer standard-output)
702 n - Create a normal signature
703 c - Create a cleartext signature
704 d - Create a detached signature
708 (setq type 'normal))))))
711 (defun epa-sign-file (file signers mode)
712 "Sign FILE by SIGNERS keys selected."
714 (let ((verbose current-prefix-arg))
715 (list (expand-file-name (read-file-name "File: "))
717 (epa-select-keys (epg-make-context epa-protocol)
718 "Select keys for signing.
719 If no one is selected, default secret key is used. "
722 (epa--read-signature-type)
724 (let ((signature (concat file
725 (if (eq epa-protocol 'OpenPGP)
728 '(nil t normal detached))))
730 (if (memq mode '(t detached))
733 (if (memq mode '(t detached))
736 (context (epg-make-context epa-protocol)))
737 (epg-context-set-armor context epa-armor)
738 (epg-context-set-textmode context epa-textmode)
739 (epg-context-set-signers context signers)
740 (epg-context-set-passphrase-callback context
741 #'epa-passphrase-callback-function)
742 (epg-context-set-progress-callback context
743 #'epa-progress-callback-function
744 (format "Signing %s..."
745 (file-name-nondirectory file)))
746 (message "Signing %s..." (file-name-nondirectory file))
747 (epg-sign-file context file signature mode)
748 (message "Signing %s...wrote %s" (file-name-nondirectory file)
749 (file-name-nondirectory signature))))
752 (defun epa-encrypt-file (file recipients)
753 "Encrypt FILE for RECIPIENTS."
755 (list (expand-file-name (read-file-name "File: "))
756 (epa-select-keys (epg-make-context epa-protocol)
757 "Select recipients for encryption.
758 If no one is selected, symmetric encryption will be performed. ")))
759 (let ((cipher (concat file (if (eq epa-protocol 'OpenPGP)
760 (if epa-armor ".asc" ".gpg")
762 (context (epg-make-context epa-protocol)))
763 (epg-context-set-armor context epa-armor)
764 (epg-context-set-textmode context epa-textmode)
765 (epg-context-set-passphrase-callback context
766 #'epa-passphrase-callback-function)
767 (epg-context-set-progress-callback context
768 #'epa-progress-callback-function
769 (format "Encrypting %s..."
770 (file-name-nondirectory file)))
771 (message "Encrypting %s..." (file-name-nondirectory file))
772 (epg-encrypt-file context file recipients cipher)
773 (message "Encrypting %s...wrote %s" (file-name-nondirectory file)
774 (file-name-nondirectory cipher))))
777 (defun epa-decrypt-region (start end)
778 "Decrypt the current region between START and END.
780 Don't use this command in Lisp programs!"
783 (let ((context (epg-make-context epa-protocol))
785 (epg-context-set-passphrase-callback context
786 #'epa-passphrase-callback-function)
787 (epg-context-set-progress-callback context
788 #'epa-progress-callback-function
790 (message "Decrypting...")
791 (setq plain (epg-decrypt-string context (buffer-substring start end)))
792 (message "Decrypting...done")
793 (setq plain (epa--decode-coding-string
795 (or coding-system-for-read
796 (get-text-property start 'epa-coding-system-used))))
797 (if (y-or-n-p "Replace the original text? ")
798 (let ((inhibit-read-only t)
800 (delete-region start end)
803 (with-output-to-temp-buffer "*Temp*"
804 (set-buffer standard-output)
807 (if (epg-context-result-for context 'verify)
808 (epa-display-info (epg-verify-result-to-string
809 (epg-context-result-for context 'verify)))))))
811 (defun epa--find-coding-system-for-mime-charset (mime-charset)
812 (if (featurep 'xemacs)
813 (if (fboundp 'find-coding-system)
814 (find-coding-system mime-charset))
815 (let ((pointer (coding-system-list)))
817 (eq (coding-system-get (car pointer) 'mime-charset)
819 (setq pointer (cdr pointer)))
823 (defun epa-decrypt-armor-in-region (start end)
824 "Decrypt OpenPGP armors in the current region between START and END.
826 Don't use this command in Lisp programs!"
830 (narrow-to-region start end)
832 (let (armor-start armor-end)
833 (while (re-search-forward "-----BEGIN PGP MESSAGE-----$" nil t)
834 (setq armor-start (match-beginning 0)
835 armor-end (re-search-forward "^-----END PGP MESSAGE-----$"
838 (error "No armor tail"))
839 (goto-char armor-start)
840 (let ((coding-system-for-read
841 (or coding-system-for-read
842 (if (re-search-forward "^Charset: \\(.*\\)" armor-end t)
843 (epa--find-coding-system-for-mime-charset
844 (intern (downcase (match-string 1))))))))
845 (goto-char armor-end)
846 (epa-decrypt-region armor-start armor-end)))))))
849 (defun epa-verify-region (start end)
850 "Verify the current region between START and END.
852 Don't use this command in Lisp programs!"
854 (let ((context (epg-make-context epa-protocol))
856 (epg-context-set-progress-callback context
857 #'epa-progress-callback-function
859 (message "Verifying...")
860 (setq plain (epg-verify-string
862 (epa--encode-coding-string
863 (buffer-substring start end)
864 (or coding-system-for-write
865 (get-text-property start 'epa-coding-system-used)))))
866 (message "Verifying...done")
867 (setq plain (epa--decode-coding-string
869 (or coding-system-for-read
870 (get-text-property start 'epa-coding-system-used))))
871 (if (y-or-n-p "Replace the original text? ")
872 (let ((inhibit-read-only t)
874 (delete-region start end)
877 (with-output-to-temp-buffer "*Temp*"
878 (set-buffer standard-output)
881 (if (epg-context-result-for context 'verify)
882 (epa-display-info (epg-verify-result-to-string
883 (epg-context-result-for context 'verify))))))
886 (defun epa-verify-cleartext-in-region (start end)
887 "Verify OpenPGP cleartext signed messages in the current region
888 between START and END.
890 Don't use this command in Lisp programs!"
894 (narrow-to-region start end)
896 (let (cleartext-start cleartext-end)
897 (while (re-search-forward "-----BEGIN PGP SIGNED MESSAGE-----$"
899 (setq cleartext-start (match-beginning 0))
900 (unless (re-search-forward "^-----BEGIN PGP SIGNATURE-----$"
902 (error "Invalid cleartext signed message"))
903 (setq cleartext-end (re-search-forward
904 "^-----END PGP SIGNATURE-----$"
906 (unless cleartext-end
907 (error "No cleartext tail"))
908 (epa-verify-region cleartext-start cleartext-end))))))
911 (if (fboundp 'select-safe-coding-system)
912 (defalias 'epa--select-safe-coding-system 'select-safe-coding-system)
913 (defun epa--select-safe-coding-system (from to)
914 buffer-file-coding-system)))
917 (defun epa-sign-region (start end signers mode)
918 "Sign the current region between START and END by SIGNERS keys selected.
920 Don't use this command in Lisp programs!"
922 (let ((verbose current-prefix-arg))
923 (setq epa-last-coding-system-specified
924 (or coding-system-for-write
925 (epa--select-safe-coding-system
926 (region-beginning) (region-end))))
927 (list (region-beginning) (region-end)
929 (epa-select-keys (epg-make-context epa-protocol)
930 "Select keys for signing.
931 If no one is selected, default secret key is used. "
934 (epa--read-signature-type)
937 (let ((context (epg-make-context epa-protocol))
939 ;;(epg-context-set-armor context epa-armor)
940 (epg-context-set-armor context t)
941 ;;(epg-context-set-textmode context epa-textmode)
942 (epg-context-set-textmode context t)
943 (epg-context-set-signers context signers)
944 (epg-context-set-passphrase-callback context
945 #'epa-passphrase-callback-function)
946 (epg-context-set-progress-callback context
947 #'epa-progress-callback-function
949 (message "Signing...")
950 (setq signature (epg-sign-string context
951 (epa--encode-coding-string
952 (buffer-substring start end)
953 epa-last-coding-system-specified)
955 (message "Signing...done")
956 (delete-region start end)
958 (add-text-properties (point)
960 (insert (epa--decode-coding-string
962 (or coding-system-for-read
963 epa-last-coding-system-specified)))
965 (list 'epa-coding-system-used
966 epa-last-coding-system-specified
973 (if (fboundp 'derived-mode-p)
974 (defalias 'epa--derived-mode-p 'derived-mode-p)
975 (defun epa--derived-mode-p (&rest modes)
976 "Non-nil if the current major mode is derived from one of MODES.
977 Uses the `derived-mode-parent' property of the symbol to trace backwards."
978 (let ((parent major-mode))
979 (while (and (not (memq parent modes))
980 (setq parent (get parent 'derived-mode-parent))))
984 (defun epa-encrypt-region (start end recipients sign signers)
985 "Encrypt the current region between START and END for RECIPIENTS.
987 Don't use this command in Lisp programs!"
989 (let ((verbose current-prefix-arg)
990 (context (epg-make-context epa-protocol))
992 (setq epa-last-coding-system-specified
993 (or coding-system-for-write
994 (epa--select-safe-coding-system
995 (region-beginning) (region-end))))
996 (list (region-beginning) (region-end)
997 (epa-select-keys context
998 "Select recipients for encryption.
999 If no one is selected, symmetric encryption will be performed. ")
1000 (setq sign (if verbose (y-or-n-p "Sign? ")))
1002 (epa-select-keys context
1003 "Select keys for signing. ")))))
1005 (let ((context (epg-make-context epa-protocol))
1007 ;;(epg-context-set-armor context epa-armor)
1008 (epg-context-set-armor context t)
1009 ;;(epg-context-set-textmode context epa-textmode)
1010 (epg-context-set-textmode context t)
1012 (epg-context-set-signers context signers))
1013 (epg-context-set-passphrase-callback context
1014 #'epa-passphrase-callback-function)
1015 (epg-context-set-progress-callback context
1016 #'epa-progress-callback-function
1018 (message "Encrypting...")
1019 (setq cipher (epg-encrypt-string context
1020 (epa--encode-coding-string
1021 (buffer-substring start end)
1022 epa-last-coding-system-specified)
1025 (message "Encrypting...done")
1026 (delete-region start end)
1028 (add-text-properties (point)
1032 (list 'epa-coding-system-used
1033 epa-last-coding-system-specified
1040 (defun epa-delete-keys (keys &optional allow-secret)
1041 "Delete selected KEYS.
1043 Don't use this command in Lisp programs!"
1045 (let ((keys (epa--marked-keys)))
1047 (error "No keys selected"))
1049 (eq (nth 1 epa-list-keys-arguments) t))))
1050 (let ((context (epg-make-context epa-protocol)))
1051 (message "Deleting...")
1052 (epg-delete-keys context keys allow-secret)
1053 (message "Deleting...done")
1054 (apply #'epa-list-keys epa-list-keys-arguments)))
1057 (defun epa-import-keys (file)
1058 "Import keys from FILE.
1060 Don't use this command in Lisp programs!"
1061 (interactive "fFile: ")
1062 (setq file (expand-file-name file))
1063 (let ((context (epg-make-context epa-protocol)))
1064 (message "Importing %s..." (file-name-nondirectory file))
1067 (epg-import-keys-from-file context file)
1068 (message "Importing %s...done" (file-name-nondirectory file)))
1070 (message "Importing %s...failed" (file-name-nondirectory file))))
1071 (if (epg-context-result-for context 'import)
1072 (epa-display-info (epg-import-result-to-string
1073 (epg-context-result-for context 'import))))
1074 (if (eq major-mode 'epa-key-list-mode)
1075 (apply #'epa-list-keys epa-list-keys-arguments))))
1078 (defun epa-import-keys-region (start end)
1079 "Import keys from the region.
1081 Don't use this command in Lisp programs!"
1083 (let ((context (epg-make-context epa-protocol)))
1084 (message "Importing...")
1087 (epg-import-keys-from-string context (buffer-substring start end))
1088 (message "Importing...done"))
1090 (message "Importing...failed")))
1091 (if (epg-context-result-for context 'import)
1092 (epa-display-info (epg-import-result-to-string
1093 (epg-context-result-for context 'import))))))
1096 (defun epa-import-armor-in-region (start end)
1097 "Import keys in the OpenPGP armor format in the current region
1098 between START and END.
1100 Don't use this command in Lisp programs!"
1104 (narrow-to-region start end)
1106 (let (armor-start armor-end)
1107 (while (re-search-forward
1108 "-----BEGIN \\(PGP \\(PUBLIC\\|PRIVATE\\) KEY BLOCK\\)-----$"
1110 (setq armor-start (match-beginning 0)
1111 armor-end (re-search-forward
1112 (concat "^-----END " (match-string 1) "-----$")
1115 (error "No armor tail"))
1116 (epa-import-keys-region armor-start armor-end))))))
1119 (defun epa-export-keys (keys file)
1120 "Export selected KEYS to FILE.
1122 Don't use this command in Lisp programs!"
1124 (let ((keys (epa--marked-keys))
1127 (error "No keys selected"))
1130 (concat (epg-sub-key-id (car (epg-key-sub-key-list (car keys))))
1131 (if epa-armor ".asc" ".gpg"))
1136 (concat "To file (default "
1137 (file-name-nondirectory default-name)
1139 (file-name-directory default-name)
1141 (let ((context (epg-make-context epa-protocol)))
1142 (epg-context-set-armor context epa-armor)
1143 (message "Exporting to %s..." (file-name-nondirectory file))
1144 (epg-export-keys-to-file context keys file)
1145 (message "Exporting to %s...done" (file-name-nondirectory file))))
1148 (defun epa-insert-keys (keys)
1149 "Insert selected KEYS after the point.
1151 Don't use this command in Lisp programs!"
1153 (list (epa-select-keys (epg-make-context epa-protocol)
1154 "Select keys to export. ")))
1155 (let ((context (epg-make-context epa-protocol)))
1156 ;;(epg-context-set-armor context epa-armor)
1157 (epg-context-set-armor context t)
1158 (insert (epg-export-keys-to-string context keys))))
1161 (defun epa-sign-keys (keys &optional local)
1162 "Sign selected KEYS.
1163 If a prefix-arg is specified, the signature is marked as non exportable.
1165 Don't use this command in Lisp programs!"
1167 (let ((keys (epa--marked-keys)))
1169 (error "No keys selected"))
1170 (list keys current-prefix-arg)))
1171 (let ((context (epg-make-context epa-protocol)))
1172 (epg-context-set-passphrase-callback context
1173 #'epa-passphrase-callback-function)
1174 (epg-context-set-progress-callback context
1175 #'epa-progress-callback-function
1177 (message "Signing keys...")
1178 (epg-sign-keys context keys local)
1179 (message "Signing keys...done")))
1180 (make-obsolete 'epa-sign-keys "Do not use.")
1184 ;;; epa.el ends here