* ibuffer.el (ibuffer-visit-buffer): To mimick list-buffers
[bpt/emacs.git] / lisp / epa.el
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c154c0be 1;;; epa.el --- the EasyPG Assistant
114f9c96 2;; Copyright (C) 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
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3
4;; Author: Daiki Ueno <ueno@unixuser.org>
5;; Keywords: PGP, GnuPG
6
7;; This file is part of GNU Emacs.
8
eb3fa2cf 9;; GNU Emacs is free software: you can redistribute it and/or modify
c154c0be 10;; it under the terms of the GNU General Public License as published by
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11;; the Free Software Foundation, either version 3 of the License, or
12;; (at your option) any later version.
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13
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.
18
19;; You should have received a copy of the GNU General Public License
eb3fa2cf 20;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
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21
22;;; Code:
23
24(require 'epg)
25(require 'font-lock)
26(require 'widget)
27(eval-when-compile (require 'wid-edit))
28(require 'derived)
29
30(defgroup epa nil
31 "The EasyPG Assistant"
0bd4f317 32 :version "23.1"
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33 :group 'epg)
34
35(defcustom epa-popup-info-window t
36 "If non-nil, status information from epa commands is displayed on
37the separate window."
38 :type 'boolean
39 :group 'epa)
40
41(defcustom epa-info-window-height 5
42 "Number of lines used to display status information."
43 :type 'integer
44 :group 'epa)
45
46(defgroup epa-faces nil
47 "Faces for epa-mode."
0bd4f317 48 :version "23.1"
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49 :group 'epa)
50
51(defface epa-validity-high
52 `((((class color) (background dark))
53 (:foreground "PaleTurquoise"
54 ,@(if (assq ':weight custom-face-attributes)
55 '(:weight bold)
56 '(:bold t))))
57 (t
58 (,@(if (assq ':weight custom-face-attributes)
59 '(:weight bold)
60 '(:bold t)))))
61 "Face used for displaying the high validity."
62 :group 'epa-faces)
63
64(defface epa-validity-medium
65 `((((class color) (background dark))
66 (:foreground "PaleTurquoise"
67 ,@(if (assq ':slant custom-face-attributes)
68 '(:slant italic)
69 '(:italic t))))
70 (t
71 (,@(if (assq ':slant custom-face-attributes)
72 '(:slant italic)
73 '(:italic t)))))
74 "Face used for displaying the medium validity."
75 :group 'epa-faces)
76
77(defface epa-validity-low
78 `((t
79 (,@(if (assq ':slant custom-face-attributes)
80 '(:slant italic)
81 '(:italic t)))))
82 "Face used for displaying the low validity."
83 :group 'epa-faces)
84
85(defface epa-validity-disabled
86 `((t
87 (,@(if (assq ':slant custom-face-attributes)
88 '(:slant italic)
89 '(:italic t))
90 :inverse-video t)))
91 "Face used for displaying the disabled validity."
92 :group 'epa-faces)
93
94(defface epa-string
95 '((((class color) (background dark))
96 (:foreground "lightyellow"))
97 (((class color) (background light))
98 (:foreground "blue4")))
99 "Face used for displaying the string."
100 :group 'epa-faces)
101
102(defface epa-mark
103 `((((class color) (background dark))
104 (:foreground "orange"
105 ,@(if (assq ':weight custom-face-attributes)
106 '(:weight bold)
107 '(:bold t))))
108 (((class color) (background light))
109 (:foreground "red"
110 ,@(if (assq ':weight custom-face-attributes)
111 '(:weight bold)
112 '(:bold t))))
113 (t
114 (,@(if (assq ':weight custom-face-attributes)
115 '(:weight bold)
116 '(:bold t)))))
117 "Face used for displaying the high validity."
118 :group 'epa-faces)
119
120(defface epa-field-name
121 `((((class color) (background dark))
122 (:foreground "PaleTurquoise"
123 ,@(if (assq ':weight custom-face-attributes)
124 '(:weight bold)
125 '(:bold t))))
126 (t
127 (,@(if (assq ':weight custom-face-attributes)
128 '(:weight bold)
129 '(:bold t)))))
130 "Face for the name of the attribute field."
131 :group 'epa)
132
133(defface epa-field-body
134 `((((class color) (background dark))
135 (:foreground "turquoise"
136 ,@(if (assq ':slant custom-face-attributes)
137 '(:slant italic)
138 '(:italic t))))
139 (t
140 (,@(if (assq ':slant custom-face-attributes)
141 '(:slant italic)
142 '(:italic t)))))
143 "Face for the body of the attribute field."
144 :group 'epa)
145
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))
160 :group 'epa)
161
162(defvar epa-font-lock-keywords
163 '(("^\\*"
164 (0 'epa-mark))
165 ("^\t\\([^\t:]+:\\)[ \t]*\\(.*\\)$"
166 (1 'epa-field-name)
167 (2 'epa-field-body)))
168 "Default expressions to addon in epa-mode.")
169
170(defconst epa-pubkey-algorithm-letter-alist
171 '((1 . ?R)
172 (2 . ?r)
173 (3 . ?s)
174 (16 . ?g)
175 (17 . ?D)
176 (20 . ?G)))
177
178(defvar epa-protocol 'OpenPGP
179 "*The default protocol.
180The value can be either OpenPGP or CMS.
181
182You should bind this variable with `let', but do not set it globally.")
183
184(defvar epa-armor nil
185 "*If non-nil, epa commands create ASCII armored output.
186
187You should bind this variable with `let', but do not set it globally.")
188
189(defvar epa-textmode nil
190 "*If non-nil, epa commands treat input files as text.
191
192You should bind this variable with `let', but do not set it globally.")
193
194(defvar epa-keys-buffer nil)
195(defvar epa-key-buffer-alist nil)
196(defvar epa-key nil)
197(defvar epa-list-keys-arguments nil)
198(defvar epa-info-buffer nil)
199(defvar epa-last-coding-system-specified nil)
200
201(defvar epa-key-list-mode-map
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202 (let ((keymap (make-sparse-keymap))
203 (menu-map (make-sparse-keymap)))
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204 (define-key keymap "m" 'epa-mark-key)
205 (define-key keymap "u" 'epa-unmark-key)
206 (define-key keymap "d" 'epa-decrypt-file)
207 (define-key keymap "v" 'epa-verify-file)
208 (define-key keymap "s" 'epa-sign-file)
209 (define-key keymap "e" 'epa-encrypt-file)
210 (define-key keymap "r" 'epa-delete-keys)
211 (define-key keymap "i" 'epa-import-keys)
212 (define-key keymap "o" 'epa-export-keys)
213 (define-key keymap "g" 'revert-buffer)
214 (define-key keymap "n" 'next-line)
215 (define-key keymap "p" 'previous-line)
216 (define-key keymap " " 'scroll-up)
217 (define-key keymap [delete] 'scroll-down)
218 (define-key keymap "q" 'epa-exit-buffer)
dc9b613e 219 (define-key keymap [menu-bar epa-key-list-mode] (cons "Keys" menu-map))
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220 (define-key menu-map [epa-key-list-unmark-key]
221 '(menu-item "Unmark Key" epa-unmark-key
222 :help "Unmark a key"))
223 (define-key menu-map [epa-key-list-mark-key]
224 '(menu-item "Mark Key" epa-mark-key
225 :help "Mark a key"))
226 (define-key menu-map [separator-epa-file] '(menu-item "--"))
227 (define-key menu-map [epa-verify-file]
228 '(menu-item "Verify File..." epa-verify-file
229 :help "Verify FILE"))
230 (define-key menu-map [epa-sign-file]
231 '(menu-item "Sign File..." epa-sign-file
232 :help "Sign FILE by SIGNERS keys selected"))
233 (define-key menu-map [epa-decrypt-file]
234 '(menu-item "Decrypt File..." epa-decrypt-file
235 :help "Decrypt FILE"))
236 (define-key menu-map [epa-encrypt-file]
d88444f2 237 '(menu-item "Encrypt File..." epa-encrypt-file
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238 :help "Encrypt FILE for RECIPIENTS"))
239 (define-key menu-map [separator-epa-key-list] '(menu-item "--"))
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240 (define-key menu-map [epa-key-list-delete-keys]
241 '(menu-item "Delete keys" epa-delete-keys
703b9611 242 :help "Delete Marked Keys"))
dc9b613e 243 (define-key menu-map [epa-key-list-import-keys]
703b9611 244 '(menu-item "Import Keys" epa-import-keys
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245 :help "Import keys from a file"))
246 (define-key menu-map [epa-key-list-export-keys]
703b9611 247 '(menu-item "Export Keys" epa-export-keys
dc9b613e 248 :help "Export marked keys to a file"))
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249 keymap))
250
251(defvar epa-key-mode-map
252 (let ((keymap (make-sparse-keymap)))
253 (define-key keymap "q" 'epa-exit-buffer)
254 keymap))
255
256(defvar epa-info-mode-map
257 (let ((keymap (make-sparse-keymap)))
258 (define-key keymap "q" 'delete-window)
259 keymap))
260
261(defvar epa-exit-buffer-function #'bury-buffer)
262
263(define-widget 'epa-key 'push-button
264 "Button for representing a epg-key object."
265 :format "%[%v%]"
266 :button-face-get 'epa--key-widget-button-face-get
267 :value-create 'epa--key-widget-value-create
268 :action 'epa--key-widget-action
269 :help-echo 'epa--key-widget-help-echo)
270
271(defun epa--key-widget-action (widget &optional event)
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272 (save-selected-window
273 (epa--show-key (widget-get widget :value))))
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274
275(defun epa--key-widget-value-create (widget)
276 (let* ((key (widget-get widget :value))
277 (primary-sub-key (car (epg-key-sub-key-list key)))
278 (primary-user-id (car (epg-key-user-id-list key))))
279 (insert (format "%c "
280 (if (epg-sub-key-validity primary-sub-key)
281 (car (rassq (epg-sub-key-validity primary-sub-key)
282 epg-key-validity-alist))
283 ? ))
284 (epg-sub-key-id primary-sub-key)
285 " "
286 (if primary-user-id
287 (if (stringp (epg-user-id-string primary-user-id))
288 (epg-user-id-string primary-user-id)
289 (epg-decode-dn (epg-user-id-string primary-user-id)))
290 ""))))
291
292(defun epa--key-widget-button-face-get (widget)
293 (let ((validity (epg-sub-key-validity (car (epg-key-sub-key-list
294 (widget-get widget :value))))))
295 (if validity
296 (cdr (assq validity epa-validity-face-alist))
297 'default)))
298
299(defun epa--key-widget-help-echo (widget)
300 (format "Show %s"
301 (epg-sub-key-id (car (epg-key-sub-key-list
302 (widget-get widget :value))))))
303
304(eval-and-compile
305 (if (fboundp 'encode-coding-string)
306 (defalias 'epa--encode-coding-string 'encode-coding-string)
307 (defalias 'epa--encode-coding-string 'identity)))
308
309(eval-and-compile
310 (if (fboundp 'decode-coding-string)
311 (defalias 'epa--decode-coding-string 'decode-coding-string)
312 (defalias 'epa--decode-coding-string 'identity)))
313
314(defun epa-key-list-mode ()
315 "Major mode for `epa-list-keys'."
316 (kill-all-local-variables)
317 (buffer-disable-undo)
318 (setq major-mode 'epa-key-list-mode
319 mode-name "Keys"
320 truncate-lines t
321 buffer-read-only t)
322 (use-local-map epa-key-list-mode-map)
323 (make-local-variable 'font-lock-defaults)
324 (setq font-lock-defaults '(epa-font-lock-keywords t))
325 ;; In XEmacs, auto-initialization of font-lock is not effective
326 ;; if buffer-file-name is not set.
327 (font-lock-set-defaults)
328 (make-local-variable 'epa-exit-buffer-function)
329 (make-local-variable 'revert-buffer-function)
330 (setq revert-buffer-function 'epa--key-list-revert-buffer)
64cc2f2c 331 (run-mode-hooks 'epa-key-list-mode-hook))
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332
333(defun epa-key-mode ()
334 "Major mode for a key description."
335 (kill-all-local-variables)
336 (buffer-disable-undo)
337 (setq major-mode 'epa-key-mode
338 mode-name "Key"
339 truncate-lines t
340 buffer-read-only t)
341 (use-local-map epa-key-mode-map)
342 (make-local-variable 'font-lock-defaults)
343 (setq font-lock-defaults '(epa-font-lock-keywords t))
344 ;; In XEmacs, auto-initialization of font-lock is not effective
345 ;; if buffer-file-name is not set.
346 (font-lock-set-defaults)
347 (make-local-variable 'epa-exit-buffer-function)
64cc2f2c 348 (run-mode-hooks 'epa-key-mode-hook))
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349
350(defun epa-info-mode ()
351 "Major mode for `epa-info-buffer'."
352 (kill-all-local-variables)
353 (buffer-disable-undo)
354 (setq major-mode 'epa-info-mode
355 mode-name "Info"
356 truncate-lines t
357 buffer-read-only t)
358 (use-local-map epa-info-mode-map)
64cc2f2c 359 (run-mode-hooks 'epa-info-mode-hook))
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360
361(defun epa-mark-key (&optional arg)
362 "Mark a key on the current line.
363If ARG is non-nil, unmark the key."
364 (interactive "P")
365 (let ((inhibit-read-only t)
366 buffer-read-only
367 properties)
368 (beginning-of-line)
369 (unless (get-text-property (point) 'epa-key)
370 (error "No key on this line"))
371 (setq properties (text-properties-at (point)))
372 (delete-char 1)
373 (insert (if arg " " "*"))
374 (set-text-properties (1- (point)) (point) properties)
375 (forward-line)))
376
377(defun epa-unmark-key (&optional arg)
378 "Unmark a key on the current line.
379If ARG is non-nil, mark the key."
380 (interactive "P")
381 (epa-mark-key (not arg)))
382
383(defun epa-exit-buffer ()
384 "Exit the current buffer.
385`epa-exit-buffer-function' is called if it is set."
386 (interactive)
387 (funcall epa-exit-buffer-function))
388
389(defun epa--insert-keys (keys)
390 (save-excursion
391 (save-restriction
392 (narrow-to-region (point) (point))
393 (let (point)
394 (while keys
395 (setq point (point))
396 (insert " ")
397 (add-text-properties point (point)
398 (list 'epa-key (car keys)
399 'front-sticky nil
400 'rear-nonsticky t
401 'start-open t
402 'end-open t))
403 (widget-create 'epa-key :value (car keys))
404 (insert "\n")
f1914c40 405 (setq keys (cdr keys))))
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406 (add-text-properties (point-min) (point-max)
407 (list 'epa-list-keys t
408 'front-sticky nil
409 'rear-nonsticky t
410 'start-open t
411 'end-open t)))))
412
413(defun epa--list-keys (name secret)
414 (unless (and epa-keys-buffer
415 (buffer-live-p epa-keys-buffer))
416 (setq epa-keys-buffer (generate-new-buffer "*Keys*")))
417 (set-buffer epa-keys-buffer)
418 (epa-key-list-mode)
419 (let ((inhibit-read-only t)
420 buffer-read-only
421 (point (point-min))
422 (context (epg-make-context epa-protocol)))
423 (unless (get-text-property point 'epa-list-keys)
424 (setq point (next-single-property-change point 'epa-list-keys)))
425 (when point
426 (delete-region point
427 (or (next-single-property-change point 'epa-list-keys)
428 (point-max)))
429 (goto-char point))
430 (epa--insert-keys (epg-list-keys context name secret))
431 (widget-setup)
432 (set-keymap-parent (current-local-map) widget-keymap))
433 (make-local-variable 'epa-list-keys-arguments)
434 (setq epa-list-keys-arguments (list name secret))
435 (goto-char (point-min))
436 (pop-to-buffer (current-buffer)))
437
438;;;###autoload
439(defun epa-list-keys (&optional name)
440 "List all keys matched with NAME from the public keyring."
441 (interactive
442 (if current-prefix-arg
443 (let ((name (read-string "Pattern: "
444 (if epa-list-keys-arguments
445 (car epa-list-keys-arguments)))))
446 (list (if (equal name "") nil name)))
447 (list nil)))
448 (epa--list-keys name nil))
449
450;;;###autoload
451(defun epa-list-secret-keys (&optional name)
452 "List all keys matched with NAME from the private keyring."
453 (interactive
454 (if current-prefix-arg
455 (let ((name (read-string "Pattern: "
456 (if epa-list-keys-arguments
457 (car epa-list-keys-arguments)))))
458 (list (if (equal name "") nil name)))
459 (list nil)))
460 (epa--list-keys name t))
461
462(defun epa--key-list-revert-buffer (&optional ignore-auto noconfirm)
463 (apply #'epa--list-keys epa-list-keys-arguments))
464
465(defun epa--marked-keys ()
7fdbcd83 466 (or (with-current-buffer epa-keys-buffer
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467 (goto-char (point-min))
468 (let (keys key)
469 (while (re-search-forward "^\\*" nil t)
470 (if (setq key (get-text-property (match-beginning 0)
471 'epa-key))
472 (setq keys (cons key keys))))
473 (nreverse keys)))
474 (save-excursion
475 (beginning-of-line)
476 (let ((key (get-text-property (point) 'epa-key)))
477 (if key
478 (list key))))))
479
480(defun epa--select-keys (prompt keys)
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481 (unless (and epa-keys-buffer
482 (buffer-live-p epa-keys-buffer))
483 (setq epa-keys-buffer (generate-new-buffer "*Keys*")))
484 (with-current-buffer epa-keys-buffer
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485 (epa-key-list-mode)
486 (let ((inhibit-read-only t)
487 buffer-read-only)
488 (erase-buffer)
489 (insert prompt "\n"
490 (substitute-command-keys "\
491- `\\[epa-mark-key]' to mark a key on the line
492- `\\[epa-unmark-key]' to unmark a key on the line\n"))
493 (widget-create 'link
494 :notify (lambda (&rest ignore) (abort-recursive-edit))
495 :help-echo
496 (substitute-command-keys
497 "Click here or \\[abort-recursive-edit] to cancel")
498 "Cancel")
499 (widget-create 'link
500 :notify (lambda (&rest ignore) (exit-recursive-edit))
501 :help-echo
502 (substitute-command-keys
503 "Click here or \\[exit-recursive-edit] to finish")
504 "OK")
505 (insert "\n\n")
506 (epa--insert-keys keys)
507 (widget-setup)
508 (set-keymap-parent (current-local-map) widget-keymap)
509 (setq epa-exit-buffer-function #'abort-recursive-edit)
510 (goto-char (point-min))
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511 (let ((display-buffer-mark-dedicated 'soft))
512 (pop-to-buffer (current-buffer))))
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513 (unwind-protect
514 (progn
515 (recursive-edit)
516 (epa--marked-keys))
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517 (kill-buffer epa-keys-buffer))))
518
519;;;###autoload
520(defun epa-select-keys (context prompt &optional names secret)
521 "Display a user's keyring and ask him to select keys.
522CONTEXT is an epg-context.
523PROMPT is a string to prompt with.
524NAMES is a list of strings to be matched with keys. If it is nil, all
525the keys are listed.
526If SECRET is non-nil, list secret keys instead of public keys."
527 (let ((keys (epg-list-keys context names secret)))
2c6c404a 528 (epa--select-keys prompt keys)))
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529
530(defun epa--show-key (key)
531 (let* ((primary-sub-key (car (epg-key-sub-key-list key)))
532 (entry (assoc (epg-sub-key-id primary-sub-key)
533 epa-key-buffer-alist))
534 (inhibit-read-only t)
535 buffer-read-only
536 pointer)
537 (unless entry
538 (setq entry (cons (epg-sub-key-id primary-sub-key) nil)
539 epa-key-buffer-alist (cons entry epa-key-buffer-alist)))
540 (unless (and (cdr entry)
541 (buffer-live-p (cdr entry)))
542 (setcdr entry (generate-new-buffer
543 (format "*Key*%s" (epg-sub-key-id primary-sub-key)))))
544 (set-buffer (cdr entry))
545 (epa-key-mode)
546 (make-local-variable 'epa-key)
547 (setq epa-key key)
548 (erase-buffer)
549 (setq pointer (epg-key-user-id-list key))
550 (while pointer
551 (if (car pointer)
552 (insert " "
553 (if (epg-user-id-validity (car pointer))
554 (char-to-string
555 (car (rassq (epg-user-id-validity (car pointer))
556 epg-key-validity-alist)))
557 " ")
558 " "
559 (if (stringp (epg-user-id-string (car pointer)))
560 (epg-user-id-string (car pointer))
561 (epg-decode-dn (epg-user-id-string (car pointer))))
562 "\n"))
563 (setq pointer (cdr pointer)))
564 (setq pointer (epg-key-sub-key-list key))
565 (while pointer
566 (insert " "
567 (if (epg-sub-key-validity (car pointer))
568 (char-to-string
569 (car (rassq (epg-sub-key-validity (car pointer))
570 epg-key-validity-alist)))
571 " ")
572 " "
573 (epg-sub-key-id (car pointer))
574 " "
575 (format "%dbits"
576 (epg-sub-key-length (car pointer)))
577 " "
578 (cdr (assq (epg-sub-key-algorithm (car pointer))
579 epg-pubkey-algorithm-alist))
580 "\n\tCreated: "
581 (condition-case nil
582 (format-time-string "%Y-%m-%d"
583 (epg-sub-key-creation-time (car pointer)))
584 (error "????-??-??"))
585 (if (epg-sub-key-expiration-time (car pointer))
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586 (format (if (time-less-p (current-time)
587 (epg-sub-key-expiration-time
588 (car pointer)))
589 "\n\tExpires: %s"
590 "\n\tExpired: %s")
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591 (condition-case nil
592 (format-time-string "%Y-%m-%d"
593 (epg-sub-key-expiration-time
594 (car pointer)))
595 (error "????-??-??")))
596 "")
597 "\n\tCapabilities: "
598 (mapconcat #'symbol-name
599 (epg-sub-key-capability (car pointer))
600 " ")
601 "\n\tFingerprint: "
602 (epg-sub-key-fingerprint (car pointer))
603 "\n")
604 (setq pointer (cdr pointer)))
605 (goto-char (point-min))
606 (pop-to-buffer (current-buffer))))
607
608(defun epa-display-info (info)
609 (if epa-popup-info-window
610 (save-selected-window
611 (unless (and epa-info-buffer (buffer-live-p epa-info-buffer))
612 (setq epa-info-buffer (generate-new-buffer "*Info*")))
613 (if (get-buffer-window epa-info-buffer)
614 (delete-window (get-buffer-window epa-info-buffer)))
7fdbcd83 615 (with-current-buffer epa-info-buffer
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616 (let ((inhibit-read-only t)
617 buffer-read-only)
618 (erase-buffer)
619 (insert info))
620 (epa-info-mode)
621 (goto-char (point-min)))
622 (if (> (window-height)
623 epa-info-window-height)
624 (set-window-buffer (split-window nil (- (window-height)
625 epa-info-window-height))
626 epa-info-buffer)
627 (pop-to-buffer epa-info-buffer)
628 (if (> (window-height) epa-info-window-height)
629 (shrink-window (- (window-height) epa-info-window-height)))))
630 (message "%s" info)))
631
632(defun epa-display-verify-result (verify-result)
633 (epa-display-info (epg-verify-result-to-string verify-result)))
5443c9b7 634(make-obsolete 'epa-display-verify-result 'epa-display-info "23.1")
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635
636(defun epa-passphrase-callback-function (context key-id handback)
637 (if (eq key-id 'SYM)
638 (read-passwd "Passphrase for symmetric encryption: "
639 (eq (epg-context-operation context) 'encrypt))
640 (read-passwd
641 (if (eq key-id 'PIN)
642 "Passphrase for PIN: "
643 (let ((entry (assoc key-id epg-user-id-alist)))
644 (if entry
645 (format "Passphrase for %s %s: " key-id (cdr entry))
646 (format "Passphrase for %s: " key-id)))))))
647
648(defun epa-progress-callback-function (context what char current total
649 handback)
650 (message "%s%d%% (%d/%d)" (or handback
651 (concat what ": "))
652 (if (> total 0) (floor (* (/ current (float total)) 100)) 0)
653 current total))
654
655;;;###autoload
656(defun epa-decrypt-file (file)
657 "Decrypt FILE."
658 (interactive "fFile: ")
659 (setq file (expand-file-name file))
660 (let* ((default-name (file-name-sans-extension file))
661 (plain (expand-file-name
662 (read-file-name
663 (concat "To file (default "
664 (file-name-nondirectory default-name)
665 ") ")
666 (file-name-directory default-name)
667 default-name)))
668 (context (epg-make-context epa-protocol)))
669 (epg-context-set-passphrase-callback context
670 #'epa-passphrase-callback-function)
671 (epg-context-set-progress-callback context
672 (cons
673 #'epa-progress-callback-function
674 (format "Decrypting %s..."
675 (file-name-nondirectory file))))
676 (message "Decrypting %s..." (file-name-nondirectory file))
677 (epg-decrypt-file context file plain)
678 (message "Decrypting %s...wrote %s" (file-name-nondirectory file)
679 (file-name-nondirectory plain))
680 (if (epg-context-result-for context 'verify)
681 (epa-display-info (epg-verify-result-to-string
682 (epg-context-result-for context 'verify))))))
683
684;;;###autoload
685(defun epa-verify-file (file)
686 "Verify FILE."
687 (interactive "fFile: ")
688 (setq file (expand-file-name file))
689 (let* ((context (epg-make-context epa-protocol))
690 (plain (if (equal (file-name-extension file) "sig")
691 (file-name-sans-extension file))))
692 (epg-context-set-progress-callback context
693 (cons
694 #'epa-progress-callback-function
695 (format "Verifying %s..."
696 (file-name-nondirectory file))))
697 (message "Verifying %s..." (file-name-nondirectory file))
698 (epg-verify-file context file plain)
699 (message "Verifying %s...done" (file-name-nondirectory file))
700 (if (epg-context-result-for context 'verify)
701 (epa-display-info (epg-verify-result-to-string
702 (epg-context-result-for context 'verify))))))
703
704(defun epa--read-signature-type ()
705 (let (type c)
706 (while (null type)
707 (message "Signature type (n,c,d,?) ")
708 (setq c (read-char))
709 (cond ((eq c ?c)
710 (setq type 'clear))
711 ((eq c ?d)
712 (setq type 'detached))
713 ((eq c ??)
714 (with-output-to-temp-buffer "*Help*"
7fdbcd83 715 (with-current-buffer standard-output
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716 (insert "\
717n - Create a normal signature
718c - Create a cleartext signature
719d - Create a detached signature
720? - Show this help
721"))))
722 (t
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723 (setq type 'normal))))
724 type))
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725
726;;;###autoload
727(defun epa-sign-file (file signers mode)
728 "Sign FILE by SIGNERS keys selected."
729 (interactive
730 (let ((verbose current-prefix-arg))
731 (list (expand-file-name (read-file-name "File: "))
732 (if verbose
733 (epa-select-keys (epg-make-context epa-protocol)
734 "Select keys for signing.
735If no one is selected, default secret key is used. "
736 nil t))
737 (if verbose
738 (epa--read-signature-type)
739 'clear))))
740 (let ((signature (concat file
741 (if (eq epa-protocol 'OpenPGP)
742 (if (or epa-armor
743 (not (memq mode
744 '(nil t normal detached))))
745 ".asc"
746 (if (memq mode '(t detached))
747 ".sig"
748 ".gpg"))
749 (if (memq mode '(t detached))
750 ".p7s"
751 ".p7m"))))
752 (context (epg-make-context epa-protocol)))
753 (epg-context-set-armor context epa-armor)
754 (epg-context-set-textmode context epa-textmode)
755 (epg-context-set-signers context signers)
756 (epg-context-set-passphrase-callback context
757 #'epa-passphrase-callback-function)
758 (epg-context-set-progress-callback context
759 (cons
760 #'epa-progress-callback-function
761 (format "Signing %s..."
762 (file-name-nondirectory file))))
763 (message "Signing %s..." (file-name-nondirectory file))
764 (epg-sign-file context file signature mode)
765 (message "Signing %s...wrote %s" (file-name-nondirectory file)
766 (file-name-nondirectory signature))))
767
768;;;###autoload
769(defun epa-encrypt-file (file recipients)
770 "Encrypt FILE for RECIPIENTS."
771 (interactive
772 (list (expand-file-name (read-file-name "File: "))
773 (epa-select-keys (epg-make-context epa-protocol)
774 "Select recipients for encryption.
775If no one is selected, symmetric encryption will be performed. ")))
776 (let ((cipher (concat file (if (eq epa-protocol 'OpenPGP)
777 (if epa-armor ".asc" ".gpg")
778 ".p7m")))
779 (context (epg-make-context epa-protocol)))
780 (epg-context-set-armor context epa-armor)
781 (epg-context-set-textmode context epa-textmode)
782 (epg-context-set-passphrase-callback context
783 #'epa-passphrase-callback-function)
784 (epg-context-set-progress-callback context
785 (cons
786 #'epa-progress-callback-function
787 (format "Encrypting %s..."
788 (file-name-nondirectory file))))
789 (message "Encrypting %s..." (file-name-nondirectory file))
790 (epg-encrypt-file context file recipients cipher)
791 (message "Encrypting %s...wrote %s" (file-name-nondirectory file)
792 (file-name-nondirectory cipher))))
793
794;;;###autoload
795(defun epa-decrypt-region (start end)
796 "Decrypt the current region between START and END.
797
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798Don't use this command in Lisp programs!
799Since this function operates on regions, it does some tricks such
800as coding-system detection and unibyte/multibyte conversion. If
801you are sure how the data in the region should be treated, you
802should consider using the string based counterpart
803`epg-decrypt-string', or the file based counterpart
804`epg-decrypt-file' instead.
805
806For example:
807
808\(let ((context (epg-make-context 'OpenPGP)))
809 (decode-coding-string
810 (epg-decrypt-string context (buffer-substring start end))
811 'utf-8))"
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812 (interactive "r")
813 (save-excursion
814 (let ((context (epg-make-context epa-protocol))
815 plain)
816 (epg-context-set-passphrase-callback context
817 #'epa-passphrase-callback-function)
818 (epg-context-set-progress-callback context
819 (cons
820 #'epa-progress-callback-function
821 "Decrypting..."))
822 (message "Decrypting...")
823 (setq plain (epg-decrypt-string context (buffer-substring start end)))
824 (message "Decrypting...done")
825 (setq plain (epa--decode-coding-string
826 plain
827 (or coding-system-for-read
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828 (get-text-property start 'epa-coding-system-used)
829 'undecided)))
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830 (if (y-or-n-p "Replace the original text? ")
831 (let ((inhibit-read-only t)
832 buffer-read-only)
833 (delete-region start end)
834 (goto-char start)
835 (insert plain))
836 (with-output-to-temp-buffer "*Temp*"
837 (set-buffer standard-output)
838 (insert plain)
839 (epa-info-mode)))
840 (if (epg-context-result-for context 'verify)
841 (epa-display-info (epg-verify-result-to-string
842 (epg-context-result-for context 'verify)))))))
843
844(defun epa--find-coding-system-for-mime-charset (mime-charset)
845 (if (featurep 'xemacs)
846 (if (fboundp 'find-coding-system)
847 (find-coding-system mime-charset))
848 (let ((pointer (coding-system-list)))
849 (while (and pointer
850 (eq (coding-system-get (car pointer) 'mime-charset)
851 mime-charset))
852 (setq pointer (cdr pointer)))
853 pointer)))
854
855;;;###autoload
856(defun epa-decrypt-armor-in-region (start end)
857 "Decrypt OpenPGP armors in the current region between START and END.
858
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859Don't use this command in Lisp programs!
860See the reason described in the `epa-decrypt-region' documentation."
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861 (interactive "r")
862 (save-excursion
863 (save-restriction
864 (narrow-to-region start end)
865 (goto-char start)
866 (let (armor-start armor-end)
867 (while (re-search-forward "-----BEGIN PGP MESSAGE-----$" nil t)
868 (setq armor-start (match-beginning 0)
869 armor-end (re-search-forward "^-----END PGP MESSAGE-----$"
870 nil t))
871 (unless armor-end
872 (error "No armor tail"))
873 (goto-char armor-start)
874 (let ((coding-system-for-read
875 (or coding-system-for-read
876 (if (re-search-forward "^Charset: \\(.*\\)" armor-end t)
877 (epa--find-coding-system-for-mime-charset
878 (intern (downcase (match-string 1))))))))
879 (goto-char armor-end)
880 (epa-decrypt-region armor-start armor-end)))))))
881
882;;;###autoload
883(defun epa-verify-region (start end)
884 "Verify the current region between START and END.
885
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886Don't use this command in Lisp programs!
887Since this function operates on regions, it does some tricks such
888as coding-system detection and unibyte/multibyte conversion. If
889you are sure how the data in the region should be treated, you
890should consider using the string based counterpart
891`epg-verify-string', or the file based counterpart
892`epg-verify-file' instead.
893
894For example:
895
896\(let ((context (epg-make-context 'OpenPGP)))
897 (decode-coding-string
898 (epg-verify-string context (buffer-substring start end))
899 'utf-8))"
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900 (interactive "r")
901 (let ((context (epg-make-context epa-protocol))
902 plain)
903 (epg-context-set-progress-callback context
904 (cons
905 #'epa-progress-callback-function
906 "Verifying..."))
907 (message "Verifying...")
908 (setq plain (epg-verify-string
909 context
910 (epa--encode-coding-string
911 (buffer-substring start end)
912 (or coding-system-for-write
913 (get-text-property start 'epa-coding-system-used)))))
914 (message "Verifying...done")
915 (setq plain (epa--decode-coding-string
916 plain
917 (or coding-system-for-read
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918 (get-text-property start 'epa-coding-system-used)
919 'undecided)))
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920 (if (y-or-n-p "Replace the original text? ")
921 (let ((inhibit-read-only t)
922 buffer-read-only)
923 (delete-region start end)
924 (goto-char start)
925 (insert plain))
926 (with-output-to-temp-buffer "*Temp*"
927 (set-buffer standard-output)
928 (insert plain)
929 (epa-info-mode)))
930 (if (epg-context-result-for context 'verify)
931 (epa-display-info (epg-verify-result-to-string
932 (epg-context-result-for context 'verify))))))
933
934;;;###autoload
935(defun epa-verify-cleartext-in-region (start end)
936 "Verify OpenPGP cleartext signed messages in the current region
937between START and END.
938
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939Don't use this command in Lisp programs!
940See the reason described in the `epa-verify-region' documentation."
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941 (interactive "r")
942 (save-excursion
943 (save-restriction
944 (narrow-to-region start end)
945 (goto-char start)
946 (let (cleartext-start cleartext-end)
947 (while (re-search-forward "-----BEGIN PGP SIGNED MESSAGE-----$"
948 nil t)
949 (setq cleartext-start (match-beginning 0))
950 (unless (re-search-forward "^-----BEGIN PGP SIGNATURE-----$"
951 nil t)
952 (error "Invalid cleartext signed message"))
953 (setq cleartext-end (re-search-forward
954 "^-----END PGP SIGNATURE-----$"
955 nil t))
956 (unless cleartext-end
957 (error "No cleartext tail"))
958 (epa-verify-region cleartext-start cleartext-end))))))
959
960(eval-and-compile
961 (if (fboundp 'select-safe-coding-system)
962 (defalias 'epa--select-safe-coding-system 'select-safe-coding-system)
963 (defun epa--select-safe-coding-system (from to)
964 buffer-file-coding-system)))
965
966;;;###autoload
967(defun epa-sign-region (start end signers mode)
968 "Sign the current region between START and END by SIGNERS keys selected.
969
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970Don't use this command in Lisp programs!
971Since this function operates on regions, it does some tricks such
972as coding-system detection and unibyte/multibyte conversion. If
973you are sure how the data should be treated, you should consider
974using the string based counterpart `epg-sign-string', or the file
975based counterpart `epg-sign-file' instead.
976
977For example:
978
979\(let ((context (epg-make-context 'OpenPGP)))
980 (epg-sign-string
981 context
982 (encode-coding-string (buffer-substring start end) 'utf-8)))"
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983 (interactive
984 (let ((verbose current-prefix-arg))
985 (setq epa-last-coding-system-specified
986 (or coding-system-for-write
987 (epa--select-safe-coding-system
988 (region-beginning) (region-end))))
989 (list (region-beginning) (region-end)
990 (if verbose
991 (epa-select-keys (epg-make-context epa-protocol)
992 "Select keys for signing.
993If no one is selected, default secret key is used. "
994 nil t))
995 (if verbose
996 (epa--read-signature-type)
997 'clear))))
998 (save-excursion
999 (let ((context (epg-make-context epa-protocol))
1000 signature)
1001 ;;(epg-context-set-armor context epa-armor)
1002 (epg-context-set-armor context t)
1003 ;;(epg-context-set-textmode context epa-textmode)
1004 (epg-context-set-textmode context t)
1005 (epg-context-set-signers context signers)
1006 (epg-context-set-passphrase-callback context
1007 #'epa-passphrase-callback-function)
1008 (epg-context-set-progress-callback context
1009 (cons
1010 #'epa-progress-callback-function
1011 "Signing..."))
1012 (message "Signing...")
1013 (setq signature (epg-sign-string context
1014 (epa--encode-coding-string
1015 (buffer-substring start end)
1016 epa-last-coding-system-specified)
1017 mode))
1018 (message "Signing...done")
1019 (delete-region start end)
1020 (goto-char start)
1021 (add-text-properties (point)
1022 (progn
1023 (insert (epa--decode-coding-string
1024 signature
1025 (or coding-system-for-read
1026 epa-last-coding-system-specified)))
1027 (point))
1028 (list 'epa-coding-system-used
1029 epa-last-coding-system-specified
1030 'front-sticky nil
1031 'rear-nonsticky t
1032 'start-open t
1033 'end-open t)))))
1034
1035(eval-and-compile
1036 (if (fboundp 'derived-mode-p)
1037 (defalias 'epa--derived-mode-p 'derived-mode-p)
1038 (defun epa--derived-mode-p (&rest modes)
1039 "Non-nil if the current major mode is derived from one of MODES.
1040Uses the `derived-mode-parent' property of the symbol to trace backwards."
1041 (let ((parent major-mode))
1042 (while (and (not (memq parent modes))
1043 (setq parent (get parent 'derived-mode-parent))))
1044 parent))))
1045
1046;;;###autoload
1047(defun epa-encrypt-region (start end recipients sign signers)
1048 "Encrypt the current region between START and END for RECIPIENTS.
1049
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1050Don't use this command in Lisp programs!
1051Since this function operates on regions, it does some tricks such
1052as coding-system detection and unibyte/multibyte conversion. If
1053you are sure how the data should be treated, you should consider
1054using the string based counterpart `epg-encrypt-string', or the
1055file based counterpart `epg-encrypt-file' instead.
1056
1057For example:
1058
1059\(let ((context (epg-make-context 'OpenPGP)))
1060 (epg-encrypt-string
1061 context
1062 (encode-coding-string (buffer-substring start end) 'utf-8)
1063 nil))"
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1064 (interactive
1065 (let ((verbose current-prefix-arg)
1066 (context (epg-make-context epa-protocol))
1067 sign)
1068 (setq epa-last-coding-system-specified
1069 (or coding-system-for-write
1070 (epa--select-safe-coding-system
1071 (region-beginning) (region-end))))
1072 (list (region-beginning) (region-end)
1073 (epa-select-keys context
1074 "Select recipients for encryption.
1075If no one is selected, symmetric encryption will be performed. ")
1076 (setq sign (if verbose (y-or-n-p "Sign? ")))
1077 (if sign
1078 (epa-select-keys context
1079 "Select keys for signing. ")))))
1080 (save-excursion
1081 (let ((context (epg-make-context epa-protocol))
1082 cipher)
1083 ;;(epg-context-set-armor context epa-armor)
1084 (epg-context-set-armor context t)
1085 ;;(epg-context-set-textmode context epa-textmode)
1086 (epg-context-set-textmode context t)
1087 (if sign
1088 (epg-context-set-signers context signers))
1089 (epg-context-set-passphrase-callback context
1090 #'epa-passphrase-callback-function)
1091 (epg-context-set-progress-callback context
1092 (cons
1093 #'epa-progress-callback-function
1094 "Encrypting..."))
1095 (message "Encrypting...")
1096 (setq cipher (epg-encrypt-string context
1097 (epa--encode-coding-string
1098 (buffer-substring start end)
1099 epa-last-coding-system-specified)
1100 recipients
1101 sign))
1102 (message "Encrypting...done")
1103 (delete-region start end)
1104 (goto-char start)
1105 (add-text-properties (point)
1106 (progn
1107 (insert cipher)
1108 (point))
1109 (list 'epa-coding-system-used
1110 epa-last-coding-system-specified
1111 'front-sticky nil
1112 'rear-nonsticky t
1113 'start-open t
1114 'end-open t)))))
1115
1116;;;###autoload
1117(defun epa-delete-keys (keys &optional allow-secret)
2c6c404a 1118 "Delete selected KEYS."
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1119 (interactive
1120 (let ((keys (epa--marked-keys)))
1121 (unless keys
1122 (error "No keys selected"))
1123 (list keys
1124 (eq (nth 1 epa-list-keys-arguments) t))))
1125 (let ((context (epg-make-context epa-protocol)))
1126 (message "Deleting...")
1127 (epg-delete-keys context keys allow-secret)
1128 (message "Deleting...done")
dc9b613e 1129 (apply #'epa--list-keys epa-list-keys-arguments)))
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1130
1131;;;###autoload
1132(defun epa-import-keys (file)
2c6c404a 1133 "Import keys from FILE."
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1134 (interactive "fFile: ")
1135 (setq file (expand-file-name file))
1136 (let ((context (epg-make-context epa-protocol)))
1137 (message "Importing %s..." (file-name-nondirectory file))
1138 (condition-case nil
1139 (progn
1140 (epg-import-keys-from-file context file)
1141 (message "Importing %s...done" (file-name-nondirectory file)))
1142 (error
1143 (message "Importing %s...failed" (file-name-nondirectory file))))
1144 (if (epg-context-result-for context 'import)
1145 (epa-display-info (epg-import-result-to-string
1146 (epg-context-result-for context 'import))))
1147 (if (eq major-mode 'epa-key-list-mode)
dc9b613e 1148 (apply #'epa--list-keys epa-list-keys-arguments))))
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1149
1150;;;###autoload
1151(defun epa-import-keys-region (start end)
2c6c404a 1152 "Import keys from the region."
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1153 (interactive "r")
1154 (let ((context (epg-make-context epa-protocol)))
1155 (message "Importing...")
1156 (condition-case nil
1157 (progn
1158 (epg-import-keys-from-string context (buffer-substring start end))
1159 (message "Importing...done"))
1160 (error
1161 (message "Importing...failed")))
1162 (if (epg-context-result-for context 'import)
1163 (epa-display-info (epg-import-result-to-string
1164 (epg-context-result-for context 'import))))))
1165
1166;;;###autoload
1167(defun epa-import-armor-in-region (start end)
1168 "Import keys in the OpenPGP armor format in the current region
2c6c404a 1169between START and END."
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1170 (interactive "r")
1171 (save-excursion
1172 (save-restriction
1173 (narrow-to-region start end)
1174 (goto-char start)
1175 (let (armor-start armor-end)
1176 (while (re-search-forward
1177 "-----BEGIN \\(PGP \\(PUBLIC\\|PRIVATE\\) KEY BLOCK\\)-----$"
1178 nil t)
1179 (setq armor-start (match-beginning 0)
1180 armor-end (re-search-forward
1181 (concat "^-----END " (match-string 1) "-----$")
1182 nil t))
1183 (unless armor-end
1184 (error "No armor tail"))
1185 (epa-import-keys-region armor-start armor-end))))))
1186
1187;;;###autoload
1188(defun epa-export-keys (keys file)
2c6c404a 1189 "Export selected KEYS to FILE."
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1190 (interactive
1191 (let ((keys (epa--marked-keys))
1192 default-name)
1193 (unless keys
1194 (error "No keys selected"))
1195 (setq default-name
1196 (expand-file-name
1197 (concat (epg-sub-key-id (car (epg-key-sub-key-list (car keys))))
1198 (if epa-armor ".asc" ".gpg"))
1199 default-directory))
1200 (list keys
1201 (expand-file-name
1202 (read-file-name
1203 (concat "To file (default "
1204 (file-name-nondirectory default-name)
1205 ") ")
1206 (file-name-directory default-name)
1207 default-name)))))
1208 (let ((context (epg-make-context epa-protocol)))
1209 (epg-context-set-armor context epa-armor)
1210 (message "Exporting to %s..." (file-name-nondirectory file))
1211 (epg-export-keys-to-file context keys file)
1212 (message "Exporting to %s...done" (file-name-nondirectory file))))
1213
1214;;;###autoload
1215(defun epa-insert-keys (keys)
2c6c404a 1216 "Insert selected KEYS after the point."
c154c0be
MO
1217 (interactive
1218 (list (epa-select-keys (epg-make-context epa-protocol)
1219 "Select keys to export. ")))
1220 (let ((context (epg-make-context epa-protocol)))
1221 ;;(epg-context-set-armor context epa-armor)
1222 (epg-context-set-armor context t)
1223 (insert (epg-export-keys-to-string context keys))))
1224
1225;; (defun epa-sign-keys (keys &optional local)
1226;; "Sign selected KEYS.
1227;; If a prefix-arg is specified, the signature is marked as non exportable.
1228
1229;; Don't use this command in Lisp programs!"
1230;; (interactive
1231;; (let ((keys (epa--marked-keys)))
1232;; (unless keys
1233;; (error "No keys selected"))
1234;; (list keys current-prefix-arg)))
1235;; (let ((context (epg-make-context epa-protocol)))
1236;; (epg-context-set-passphrase-callback context
1237;; #'epa-passphrase-callback-function)
1238;; (epg-context-set-progress-callback context
1239;; (cons
1240;; #'epa-progress-callback-function
1241;; "Signing keys..."))
1242;; (message "Signing keys...")
1243;; (epg-sign-keys context keys local)
1244;; (message "Signing keys...done")))
1245;; (make-obsolete 'epa-sign-keys "Do not use.")
1246
1247(provide 'epa)
1248
37b77401 1249;; arch-tag: 38d20ced-20d5-4137-b17a-f206335423d7
c154c0be 1250;;; epa.el ends here