1 ;;; epg.el --- the EasyPG Library
2 ;; Copyright (C) 1999, 2000, 2002, 2003, 2004,
3 ;; 2005, 2006 Free Software Foundation, Inc.
4 ;; Copyright (C) 2006 Daiki Ueno
6 ;; Author: Daiki Ueno <ueno@unixuser.org>
7 ;; Keywords: PGP, GnuPG
9 ;; This file is part of EasyPG.
11 ;; This program is free software; you can redistribute it and/or modify
12 ;; it under the terms of the GNU General Public License as published by
13 ;; the Free Software Foundation; either version 2, or (at your option)
16 ;; This program is distributed in the hope that it will be useful,
17 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 ;; GNU General Public License for more details.
21 ;; You should have received a copy of the GNU General Public License
22 ;; along with GNU Emacs; see the file COPYING. If not, write to the
23 ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
24 ;; Boston, MA 02110-1301, USA.
31 (defcustom epg-gpg-program "gpg"
32 "The `gpg' executable."
36 (defcustom epg-gpgsm-program "gpgsm"
37 "The `gpgsm' executable."
41 (defconst epg-version-number "0.0.1")
43 (defvar epg-user-id nil
44 "GnuPG ID of your default identity.")
46 (defvar epg-user-id-alist nil
47 "An alist mapping from key ID to user ID.")
49 (defvar epg-read-point nil)
50 (defvar epg-pending-status-list nil)
51 (defvar epg-key-id nil)
52 (defvar epg-context nil)
53 (defvar epg-debug nil)
54 (defvar epg-debug-buffer nil)
56 ;; from gnupg/include/cipher.h
57 (defconst epg-cipher-algorithm-alist
69 ;; from gnupg/include/cipher.h
70 (defconst epg-pubkey-algorithm-alist
78 ;; from gnupg/include/cipher.h
79 (defconst epg-digest-algorithm-alist
87 ;; from gnupg/include/cipher.h
88 (defconst epg-compress-algorithm-alist
94 (defconst epg-invalid-recipients-alist
95 '((0 . "No specific reason given")
97 (2 . "Ambigious specification")
98 (3 . "Wrong key usage")
103 (8 . "Policy mismatch")
104 (9 . "Not a secret key")
105 (10 . "Key not trusted")))
107 (defconst epg-delete-problem-alist
108 '((1 . "No such key")
109 (2 . "Must delete secret key first")
110 (3 . "Ambigious specification")))
112 (defvar epg-key-validity-alist
125 (defvar epg-key-capablity-alist
129 (?a . authentication)))
131 (defvar epg-dn-type-alist
132 '(("1.2.840.113549.1.9.1" . "EMail")
136 ("0.2.262.1.10.7.20" . "NameDistinguisher")
137 ("2.5.4.16" . "ADDR")
140 ("2.5.4.17" . "PostalCode")
141 ("2.5.4.65" . "Pseudo")
142 ("2.5.4.5" . "SerialNumber")))
144 (defvar epg-prompt-alist nil)
146 (defun epg-make-data-from-file (file)
147 "Make a data object from FILE."
148 (cons 'epg-data (vector file nil)))
150 (defun epg-make-data-from-string (string)
151 "Make a data object from STRING."
152 (cons 'epg-data (vector nil string)))
154 (defun epg-data-file (data)
155 "Return the file of DATA."
156 (unless (eq (car data) 'epg-data)
157 (signal 'wrong-type-argument (list 'epg-data-p data)))
160 (defun epg-data-string (data)
161 "Return the string of DATA."
162 (unless (eq (car data) 'epg-data)
163 (signal 'wrong-type-argument (list 'epg-data-p data)))
166 (defun epg-make-context (&optional protocol armor textmode include-certs
167 cipher-algorithm digest-algorithm
169 "Return a context object."
171 (vector (or protocol 'OpenPGP) armor textmode include-certs
172 cipher-algorithm digest-algorithm compress-algorithm
173 #'epg-passphrase-callback-function
174 #'epg-progress-callback-function
177 (defun epg-context-protocol (context)
178 "Return the protocol used within CONTEXT."
179 (unless (eq (car context) 'epg-context)
180 (signal 'wrong-type-argument (list 'epg-context-p context)))
181 (aref (cdr context) 0))
183 (defun epg-context-armor (context)
184 "Return t if the output shouled be ASCII armored in CONTEXT."
185 (unless (eq (car context) 'epg-context)
186 (signal 'wrong-type-argument (list 'epg-context-p context)))
187 (aref (cdr context) 1))
189 (defun epg-context-textmode (context)
190 "Return t if canonical text mode should be used in CONTEXT."
191 (unless (eq (car context) 'epg-context)
192 (signal 'wrong-type-argument (list 'epg-context-p context)))
193 (aref (cdr context) 2))
195 (defun epg-context-include-certs (context)
196 "Return how many certificates should be included in an S/MIME signed
198 (unless (eq (car context) 'epg-context)
199 (signal 'wrong-type-argument (list 'epg-context-p context)))
200 (aref (cdr context) 3))
202 (defun epg-context-cipher-algorithm (context)
203 "Return the cipher algorithm in CONTEXT."
204 (unless (eq (car context) 'epg-context)
205 (signal 'wrong-type-argument (list 'epg-context-p context)))
206 (aref (cdr context) 4))
208 (defun epg-context-digest-algorithm (context)
209 "Return the digest algorithm in CONTEXT."
210 (unless (eq (car context) 'epg-context)
211 (signal 'wrong-type-argument (list 'epg-context-p context)))
212 (aref (cdr context) 5))
214 (defun epg-context-compress-algorithm (context)
215 "Return the compress algorithm in CONTEXT."
216 (unless (eq (car context) 'epg-context)
217 (signal 'wrong-type-argument (list 'epg-context-p context)))
218 (aref (cdr context) 6))
220 (defun epg-context-passphrase-callback (context)
221 "Return the function used to query passphrase."
222 (unless (eq (car context) 'epg-context)
223 (signal 'wrong-type-argument (list 'epg-context-p context)))
224 (aref (cdr context) 7))
226 (defun epg-context-progress-callback (context)
227 "Return the function which handles progress update."
228 (unless (eq (car context) 'epg-context)
229 (signal 'wrong-type-argument (list 'epg-context-p context)))
230 (aref (cdr context) 8))
232 (defun epg-context-signers (context)
233 "Return the list of key-id for singning."
234 (unless (eq (car context) 'epg-context)
235 (signal 'wrong-type-argument (list 'epg-context-p context)))
236 (aref (cdr context) 9))
238 (defun epg-context-process (context)
239 "Return the process object of `epg-gpg-program'.
240 This function is for internal use only."
241 (unless (eq (car context) 'epg-context)
242 (signal 'wrong-type-argument (list 'epg-context-p context)))
243 (aref (cdr context) 10))
245 (defun epg-context-output-file (context)
246 "Return the output file of `epg-gpg-program'.
247 This function is for internal use only."
248 (unless (eq (car context) 'epg-context)
249 (signal 'wrong-type-argument (list 'epg-context-p context)))
250 (aref (cdr context) 11))
252 (defun epg-context-result (context)
253 "Return the result of the previous cryptographic operation."
254 (unless (eq (car context) 'epg-context)
255 (signal 'wrong-type-argument (list 'epg-context-p context)))
256 (aref (cdr context) 12))
258 (defun epg-context-set-protocol (context protocol)
259 "Set the protocol used within CONTEXT."
260 (unless (eq (car context) 'epg-context)
261 (signal 'wrong-type-argument (list 'epg-context-p context)))
262 (aset (cdr context) 0 protocol))
264 (defun epg-context-set-armor (context armor)
265 "Specify if the output shouled be ASCII armored in CONTEXT."
266 (unless (eq (car context) 'epg-context)
267 (signal 'wrong-type-argument (list 'epg-context-p context)))
268 (aset (cdr context) 1 armor))
270 (defun epg-context-set-textmode (context textmode)
271 "Specify if canonical text mode should be used in CONTEXT."
272 (unless (eq (car context) 'epg-context)
273 (signal 'wrong-type-argument (list 'epg-context-p context)))
274 (aset (cdr context) 2 textmode))
276 (defun epg-context-set-include-certs (context include-certs)
277 "Set how many certificates should be included in an S/MIME signed message."
278 (unless (eq (car context) 'epg-context)
279 (signal 'wrong-type-argument (list 'epg-context-p context)))
280 (aset (cdr context) 3 include-certs))
282 (defun epg-context-set-cipher-algorithm (context cipher-algorithm)
283 "Set the cipher algorithm in CONTEXT."
284 (unless (eq (car context) 'epg-context)
285 (signal 'wrong-type-argument (list 'epg-context-p context)))
286 (aset (cdr context) 4 cipher-algorithm))
288 (defun epg-context-set-digest-algorithm (context digest-algorithm)
289 "Set the digest algorithm in CONTEXT."
290 (unless (eq (car context) 'epg-context)
291 (signal 'wrong-type-argument (list 'epg-context-p context)))
292 (aset (cdr context) 5 digest-algorithm))
294 (defun epg-context-set-compress-algorithm (context compress-algorithm)
295 "Set the compress algorithm in CONTEXT."
296 (unless (eq (car context) 'epg-context)
297 (signal 'wrong-type-argument (list 'epg-context-p context)))
298 (aset (cdr context) 6 compress-algorithm))
300 (defun epg-context-set-passphrase-callback (context
302 "Set the function used to query passphrase."
303 (unless (eq (car context) 'epg-context)
304 (signal 'wrong-type-argument (list 'epg-context-p context)))
305 (aset (cdr context) 7 passphrase-callback))
307 (defun epg-context-set-progress-callback (context progress-callback)
308 "Set the function which handles progress update."
309 (unless (eq (car context) 'epg-context)
310 (signal 'wrong-type-argument (list 'epg-context-p context)))
311 (aset (cdr context) 8 progress-callback))
313 (defun epg-context-set-signers (context signers)
314 "Set the list of key-id for singning."
315 (unless (eq (car context) 'epg-context)
316 (signal 'wrong-type-argument (list 'epg-context-p context)))
317 (aset (cdr context) 9 signers))
319 (defun epg-context-set-process (context process)
320 "Set the process object of `epg-gpg-program'.
321 This function is for internal use only."
322 (unless (eq (car context) 'epg-context)
323 (signal 'wrong-type-argument (list 'epg-context-p context)))
324 (aset (cdr context) 10 process))
326 (defun epg-context-set-output-file (context output-file)
327 "Set the output file of `epg-gpg-program'.
328 This function is for internal use only."
329 (unless (eq (car context) 'epg-context)
330 (signal 'wrong-type-argument (list 'epg-context-p context)))
331 (aset (cdr context) 11 output-file))
333 (defun epg-context-set-result (context result)
334 "Set the result of the previous cryptographic operation."
335 (unless (eq (car context) 'epg-context)
336 (signal 'wrong-type-argument (list 'epg-context-p context)))
337 (aset (cdr context) 12 result))
339 (defun epg-make-signature (status &optional key-id)
340 "Return a signature object."
341 (cons 'epg-signature (vector status key-id nil nil nil nil nil nil)))
343 (defun epg-signature-status (signature)
344 "Return the status code of SIGNATURE."
345 (unless (eq (car signature) 'epg-signature)
346 (signal 'wrong-type-argument (list 'epg-signature-p signature)))
347 (aref (cdr signature) 0))
349 (defun epg-signature-key-id (signature)
350 "Return the key-id of SIGNATURE."
351 (unless (eq (car signature) 'epg-signature)
352 (signal 'wrong-type-argument (list 'epg-signature-p signature)))
353 (aref (cdr signature) 1))
355 (defun epg-signature-validity (signature)
356 "Return the validity of SIGNATURE."
357 (unless (eq (car signature) 'epg-signature)
358 (signal 'wrong-type-argument (list 'epg-signature-p signature)))
359 (aref (cdr signature) 2))
361 (defun epg-signature-fingerprint (signature)
362 "Return the fingerprint of SIGNATURE."
363 (unless (eq (car signature) 'epg-signature)
364 (signal 'wrong-type-argument (list 'epg-signature-p signature)))
365 (aref (cdr signature) 3))
367 (defun epg-signature-creation-time (signature)
368 "Return the creation time of SIGNATURE."
369 (unless (eq (car signature) 'epg-signature)
370 (signal 'wrong-type-argument (list 'epg-signature-p signature)))
371 (aref (cdr signature) 4))
373 (defun epg-signature-expiration-time (signature)
374 "Return the expiration time of SIGNATURE."
375 (unless (eq (car signature) 'epg-signature)
376 (signal 'wrong-type-argument (list 'epg-signature-p signature)))
377 (aref (cdr signature) 5))
379 (defun epg-signature-pubkey-algorithm (signature)
380 "Return the public key algorithm of SIGNATURE."
381 (unless (eq (car signature) 'epg-signature)
382 (signal 'wrong-type-argument (list 'epg-signature-p signature)))
383 (aref (cdr signature) 6))
385 (defun epg-signature-digest-algorithm (signature)
386 "Return the digest algorithm of SIGNATURE."
387 (unless (eq (car signature) 'epg-signature)
388 (signal 'wrong-type-argument (list 'epg-signature-p signature)))
389 (aref (cdr signature) 7))
391 (defun epg-signature-set-status (signature status)
392 "Set the status code of SIGNATURE."
393 (unless (eq (car signature) 'epg-signature)
394 (signal 'wrong-type-argument (list 'epg-signature-p signature)))
395 (aset (cdr signature) 0 status))
397 (defun epg-signature-set-key-id (signature key-id)
398 "Set the key-id of SIGNATURE."
399 (unless (eq (car signature) 'epg-signature)
400 (signal 'wrong-type-argument (list 'epg-signature-p signature)))
401 (aset (cdr signature) 1 key-id))
403 (defun epg-signature-set-validity (signature validity)
404 "Set the validity of SIGNATURE."
405 (unless (eq (car signature) 'epg-signature)
406 (signal 'wrong-type-argument (list 'epg-signature-p signature)))
407 (aset (cdr signature) 2 validity))
409 (defun epg-signature-set-fingerprint (signature fingerprint)
410 "Set the fingerprint of SIGNATURE."
411 (unless (eq (car signature) 'epg-signature)
412 (signal 'wrong-type-argument (list 'epg-signature-p signature)))
413 (aset (cdr signature) 3 fingerprint))
415 (defun epg-signature-set-creation-time (signature creation-time)
416 "Set the creation time of SIGNATURE."
417 (unless (eq (car signature) 'epg-signature)
418 (signal 'wrong-type-argument (list 'epg-signature-p signature)))
419 (aset (cdr signature) 4 creation-time))
421 (defun epg-signature-set-expiration-time (signature expiration-time)
422 "Set the expiration time of SIGNATURE."
423 (unless (eq (car signature) 'epg-signature)
424 (signal 'wrong-type-argument (list 'epg-signature-p signature)))
425 (aset (cdr signature) 5 expiration-time))
427 (defun epg-signature-set-pubkey-algorithm (signature pubkey-algorithm)
428 "Set the public key algorithm of SIGNATURE."
429 (unless (eq (car signature) 'epg-signature)
430 (signal 'wrong-type-argument (list 'epg-signature-p signature)))
431 (aset (cdr signature) 6 pubkey-algorithm))
433 (defun epg-signature-set-digest-algorithm (signature digest-algorithm)
434 "Set the digest algorithm of SIGNATURE."
435 (unless (eq (car signature) 'epg-signature)
436 (signal 'wrong-type-argument (list 'epg-signature-p signature)))
437 (aset (cdr signature) 7 digest-algorithm))
439 (defun epg-make-key (owner-trust)
440 "Return a key object."
441 (cons 'epg-key (vector owner-trust nil nil)))
443 (defun epg-key-owner-trust (key)
444 "Return the owner trust of KEY."
445 (unless (eq (car key) 'epg-key)
446 (signal 'wrong-type-argument (list 'epg-key-p key)))
449 (defun epg-key-sub-key-list (key)
450 "Return the sub key list of KEY."
451 (unless (eq (car key) 'epg-key)
452 (signal 'wrong-type-argument (list 'epg-key-p key)))
455 (defun epg-key-user-id-list (key)
456 "Return the user ID list of KEY."
457 (unless (eq (car key) 'epg-key)
458 (signal 'wrong-type-argument (list 'epg-key-p key)))
461 (defun epg-key-set-sub-key-list (key sub-key-list)
462 "Set the sub key list of KEY."
463 (unless (eq (car key) 'epg-key)
464 (signal 'wrong-type-argument (list 'epg-key-p key)))
465 (aset (cdr key) 1 sub-key-list))
467 (defun epg-key-set-user-id-list (key user-id-list)
468 "Set the user ID list of KEY."
469 (unless (eq (car key) 'epg-key)
470 (signal 'wrong-type-argument (list 'epg-key-p key)))
471 (aset (cdr key) 2 user-id-list))
473 (defun epg-make-sub-key (validity capability secret algorithm length id
474 creation-time expiration-time)
475 "Return a sub key object."
477 (vector validity capability secret algorithm length id creation-time
478 expiration-time nil)))
480 (defun epg-sub-key-validity (sub-key)
481 "Return the validity of SUB-KEY."
482 (unless (eq (car sub-key) 'epg-sub-key)
483 (signal 'wrong-type-argument (list 'epg-sub-key-p sub-key)))
484 (aref (cdr sub-key) 0))
486 (defun epg-sub-key-capability (sub-key)
487 "Return the capability of SUB-KEY."
488 (unless (eq (car sub-key) 'epg-sub-key)
489 (signal 'wrong-type-argument (list 'epg-sub-key-p sub-key)))
490 (aref (cdr sub-key) 1))
492 (defun epg-sub-key-secret (sub-key)
493 "Return non-nil if SUB-KEY is a secret key."
494 (unless (eq (car sub-key) 'epg-sub-key)
495 (signal 'wrong-type-argument (list 'epg-sub-key-p sub-key)))
496 (aref (cdr sub-key) 2))
498 (defun epg-sub-key-algorithm (sub-key)
499 "Return the algorithm of SUB-KEY."
500 (unless (eq (car sub-key) 'epg-sub-key)
501 (signal 'wrong-type-argument (list 'epg-sub-key-p sub-key)))
502 (aref (cdr sub-key) 3))
504 (defun epg-sub-key-length (sub-key)
505 "Return the length of SUB-KEY."
506 (unless (eq (car sub-key) 'epg-sub-key)
507 (signal 'wrong-type-argument (list 'epg-sub-key-p sub-key)))
508 (aref (cdr sub-key) 4))
510 (defun epg-sub-key-id (sub-key)
511 "Return the ID of SUB-KEY."
512 (unless (eq (car sub-key) 'epg-sub-key)
513 (signal 'wrong-type-argument (list 'epg-sub-key-p sub-key)))
514 (aref (cdr sub-key) 5))
516 (defun epg-sub-key-creation-time (sub-key)
517 "Return the creation time of SUB-KEY."
518 (unless (eq (car sub-key) 'epg-sub-key)
519 (signal 'wrong-type-argument (list 'epg-sub-key-p sub-key)))
520 (aref (cdr sub-key) 6))
522 (defun epg-sub-key-expiration-time (sub-key)
523 "Return the expiration time of SUB-KEY."
524 (unless (eq (car sub-key) 'epg-sub-key)
525 (signal 'wrong-type-argument (list 'epg-sub-key-p sub-key)))
526 (aref (cdr sub-key) 7))
528 (defun epg-sub-key-fingerprint (sub-key)
529 "Return the fingerprint of SUB-KEY."
530 (unless (eq (car sub-key) 'epg-sub-key)
531 (signal 'wrong-type-argument (list 'epg-sub-key-p sub-key)))
532 (aref (cdr sub-key) 8))
534 (defun epg-sub-key-set-fingerprint (sub-key fingerprint)
535 "Set the fingerprint of SUB-KEY.
536 This function is for internal use only."
537 (unless (eq (car sub-key) 'epg-sub-key)
538 (signal 'wrong-type-argument (list 'epg-sub-key-p sub-key)))
539 (aset (cdr sub-key) 8 fingerprint))
541 (defun epg-make-user-id (validity string)
542 "Return a user ID object."
543 (cons 'epg-user-id (vector validity string nil)))
545 (defun epg-user-id-validity (user-id)
546 "Return the validity of USER-ID."
547 (unless (eq (car user-id) 'epg-user-id)
548 (signal 'wrong-type-argument (list 'epg-user-id-p user-id)))
549 (aref (cdr user-id) 0))
551 (defun epg-user-id-string (user-id)
552 "Return the name of USER-ID."
553 (unless (eq (car user-id) 'epg-user-id)
554 (signal 'wrong-type-argument (list 'epg-user-id-p user-id)))
555 (aref (cdr user-id) 1))
557 (defun epg-user-id-signature-list (user-id)
558 "Return the signature list of USER-ID."
559 (unless (eq (car user-id) 'epg-user-id)
560 (signal 'wrong-type-argument (list 'epg-user-id-p user-id)))
561 (aref (cdr user-id) 2))
563 (defun epg-user-id-set-signature-list (user-id signature-list)
564 "Set the signature list of USER-ID."
565 (unless (eq (car user-id) 'epg-user-id)
566 (signal 'wrong-type-argument (list 'epg-user-id-p user-id)))
567 (aset (cdr user-id) 2 signature-list))
569 (defun epg-context-result-for (context name)
570 "Return the result of CONTEXT associated with NAME."
571 (cdr (assq name (epg-context-result context))))
573 (defun epg-context-set-result-for (context name value)
574 "Set the result of CONTEXT associated with NAME to VALUE."
575 (let* ((result (epg-context-result context))
576 (entry (assq name result)))
579 (epg-context-set-result context (cons (cons name value) result)))))
581 (defun epg-signature-to-string (signature)
582 "Convert SIGNATURE to a human readable string."
583 (let ((user-id (cdr (assoc (epg-signature-key-id signature)
584 epg-user-id-alist))))
586 (cond ((eq (epg-signature-status signature) 'good)
587 "Good signature from ")
588 ((eq (epg-signature-status signature) 'bad)
589 "Bad signature from ")
590 ((eq (epg-signature-status signature) 'expired)
591 "Expired signature from ")
592 ((eq (epg-signature-status signature) 'expired-key)
593 "Signature made by expired key ")
594 ((eq (epg-signature-status signature) 'revoked-key)
595 "Signature made by revoked key ")
596 ((eq (epg-signature-status signature) 'no-pubkey)
597 "No public key for "))
598 (epg-signature-key-id signature)
601 (concat (if (stringp user-id)
603 (epg-decode-dn user-id))
606 (if (epg-signature-validity signature)
607 (format "(trust %s)" (epg-signature-validity signature))
610 (defun epg-verify-result-to-string (verify-result)
611 "Convert VERIFY-RESULT to a human readable string."
612 (mapconcat #'epg-signature-to-string verify-result "\n"))
614 (defun epg-start (context args)
615 "Start `epg-gpg-program' in a subprocess with given ARGS."
616 (let* ((args (append (list "--no-tty"
619 (unless (eq (epg-context-protocol context) 'CMS)
620 (list "--command-fd" "0"))
621 (if (epg-context-armor context) '("--armor"))
622 (if (epg-context-textmode context) '("--textmode"))
623 (if (epg-context-output-file context)
624 (list "--output" (epg-context-output-file context)))
626 (coding-system-for-write 'binary)
627 process-connection-type
628 (orig-mode (default-file-modes))
629 (buffer (generate-new-buffer " *epg*"))
633 (unless epg-debug-buffer
634 (setq epg-debug-buffer (generate-new-buffer " *epg-debug*")))
635 (set-buffer epg-debug-buffer)
636 (goto-char (point-max))
637 (insert (format "%s %s\n"
638 (if (eq (epg-context-protocol context) 'CMS)
641 (mapconcat #'identity args " ")))))
642 (with-current-buffer buffer
643 (make-local-variable 'epg-read-point)
644 (setq epg-read-point (point-min))
645 (make-local-variable 'epg-pending-status-list)
646 (setq epg-pending-status-list nil)
647 (make-local-variable 'epg-key-id)
648 (setq epg-key-id nil)
649 (make-local-variable 'epg-context)
650 (setq epg-context context))
653 (set-default-file-modes 448)
655 (apply #'start-process "epg" buffer
656 (if (eq (epg-context-protocol context) 'CMS)
660 (set-default-file-modes orig-mode))
661 (set-process-filter process #'epg-process-filter)
662 (epg-context-set-process context process)))
664 (defun epg-process-filter (process input)
667 (unless epg-debug-buffer
668 (setq epg-debug-buffer (generate-new-buffer " *epg-debug*")))
669 (set-buffer epg-debug-buffer)
670 (goto-char (point-max))
672 (if (buffer-live-p (process-buffer process))
674 (set-buffer (process-buffer process))
675 (goto-char (point-max))
677 (goto-char epg-read-point)
679 (while (looking-at ".*\n") ;the input line finished
681 (if (looking-at "\\[GNUPG:] \\([A-Z_]+\\) ?\\(.*\\)")
682 (let* ((status (match-string 1))
683 (string (match-string 2))
684 (symbol (intern-soft (concat "epg-status-" status))))
685 (if (member status epg-pending-status-list)
686 (setq epg-pending-status-list nil))
689 (funcall symbol process string)))))
691 (setq epg-read-point (point)))))
693 (defun epg-read-output (context)
694 "Read the output file CONTEXT and return the content as a string."
696 (if (fboundp 'set-buffer-multibyte)
697 (set-buffer-multibyte nil))
698 (if (file-exists-p (epg-context-output-file context))
699 (let ((coding-system-for-read 'binary))
700 (insert-file-contents (epg-context-output-file context))
703 (defun epg-wait-for-status (context status-list)
704 "Wait until one of elements in STATUS-LIST arrives."
705 (with-current-buffer (process-buffer (epg-context-process context))
706 (setq epg-pending-status-list status-list)
707 (while (and (eq (process-status (epg-context-process context)) 'run)
708 epg-pending-status-list)
709 (accept-process-output (epg-context-process context) 0 1))))
711 (defun epg-wait-for-completion (context)
712 "Wait until the `epg-gpg-program' process completes."
713 (while (eq (process-status (epg-context-process context)) 'run)
714 (accept-process-output (epg-context-process context) 0 1)))
716 (defun epg-flush (context)
717 "Flush the input to the `epg-gpg-program' process."
718 (if (eq (process-status (epg-context-process context)) 'run)
719 (process-send-eof (epg-context-process context))))
721 (defun epg-reset (context)
723 (if (and (epg-context-process context)
724 (buffer-live-p (process-buffer (epg-context-process context))))
725 (kill-buffer (process-buffer (epg-context-process context))))
726 (epg-context-set-process context nil))
728 (defun epg-delete-output-file (context)
729 "Delete the output file of CONTEXT."
730 (if (and (epg-context-output-file context)
731 (file-exists-p (epg-context-output-file context)))
732 (delete-file (epg-context-output-file context))))
734 (defun epg-status-USERID_HINT (process string)
735 (if (string-match "\\`\\([^ ]+\\) \\(.*\\)" string)
736 (let* ((key-id (match-string 1 string))
737 (user-id (match-string 2 string))
738 (entry (assoc key-id epg-user-id-alist)))
740 (setcdr entry user-id)
741 (setq epg-user-id-alist (cons (cons key-id user-id)
742 epg-user-id-alist))))))
744 (defun epg-status-NEED_PASSPHRASE (process string)
745 (if (string-match "\\`\\([^ ]+\\)" string)
746 (setq epg-key-id (match-string 1 string))))
748 (defun epg-status-NEED_PASSPHRASE_SYM (process string)
749 (setq epg-key-id 'SYM))
751 (defun epg-status-NEED_PASSPHRASE_PIN (process string)
752 (setq epg-key-id 'PIN))
754 (defun epg-status-GET_HIDDEN (process string)
756 (string-match "\\`passphrase\\." string))
759 passphrase-with-new-line)
765 (if (consp (epg-context-passphrase-callback
767 (car (epg-context-passphrase-callback
769 (epg-context-passphrase-callback epg-context))
772 (if (consp (epg-context-passphrase-callback
774 (cdr (epg-context-passphrase-callback
777 (setq passphrase-with-new-line (concat passphrase "\n"))
778 (fillarray passphrase 0)
779 (setq passphrase nil)
780 (process-send-string process passphrase-with-new-line)))
782 (epg-context-set-result-for
785 (epg-context-result-for epg-context 'error)))
786 (delete-process process)))
788 (fillarray passphrase 0))
789 (if passphrase-with-new-line
790 (fillarray passphrase-with-new-line 0))))))
792 (defun epg-status-GET_BOOL (process string)
793 (let ((entry (assoc string epg-prompt-alist))
796 (if (y-or-n-p (if entry (cdr entry) (concat string "? ")))
797 (process-send-string process "y\n")
798 (process-send-string process "n\n"))
800 (epg-context-set-result-for
803 (epg-context-result-for epg-context 'error)))
804 (delete-process process)))))
806 (defun epg-status-GET_LINE (process string)
807 (let ((entry (assoc string epg-prompt-alist))
812 (concat (read-string (if entry (cdr entry) (concat string ": ")))
815 (epg-context-set-result-for
818 (epg-context-result-for epg-context 'error)))
819 (delete-process process)))))
821 (defun epg-signature-status-internal (status string)
822 (if (string-match "\\`\\([^ ]+\\) \\(.*\\)" string)
823 (let* ((key-id (match-string 1 string))
824 (user-id (match-string 2 string))
825 (entry (assoc key-id epg-user-id-alist)))
826 (epg-context-set-result-for
829 (cons (epg-make-signature status key-id)
830 (epg-context-result-for epg-context 'verify)))
831 (if (eq (epg-context-protocol epg-context) 'CMS)
833 (setq user-id (epg-dn-from-string user-id))
836 (setcdr entry user-id)
837 (setq epg-user-id-alist
838 (cons (cons key-id user-id) epg-user-id-alist))))
839 (epg-context-set-result-for
842 (cons (epg-make-signature status)
843 (epg-context-result-for epg-context 'verify)))))
845 (defun epg-status-GOODSIG (process string)
846 (epg-signature-status-internal 'good string))
848 (defun epg-status-EXPSIG (process string)
849 (epg-signature-status-internal 'expired string))
851 (defun epg-status-EXPKEYSIG (process string)
852 (epg-signature-status-internal 'expired-key string))
854 (defun epg-status-REVKEYSIG (process string)
855 (epg-signature-status-internal 'revoked-key string))
857 (defun epg-status-BADSIG (process string)
858 (epg-signature-status-internal 'bad string))
860 (defun epg-status-NO_PUBKEY (process string)
861 (epg-context-set-result-for
864 (cons (epg-make-signature 'no-pubkey string)
865 (epg-context-result-for epg-context 'verify))))
867 (defun epg-status-ERRSIG (process string)
868 (let ((signatures (car (epg-context-result-for epg-context 'verify))))
870 (setq signatures (list (epg-make-signature 'error)))
871 (epg-context-set-result-for epg-context 'verify signatures))
872 (when (and (not (eq (epg-signature-status (car signatures)) 'good))
873 (string-match "\\`\\([^ ]+\\) \\([0-9]+\\) \\([0-9]+\\) \
874 \\([0-9A-Fa-f][0-9A-Fa-f]\\) \\([^ ]+\\) \\([0-9]+\\)"
876 (epg-signature-set-key-id
878 (match-string 1 string))
879 (epg-signature-set-pubkey-algorithm
881 (string-to-number (match-string 2 string)))
882 (epg-signature-set-digest-algorithm
884 (string-to-number (match-string 3 string)))
885 ; (epg-signature-set-class
887 ; (string-to-number (match-string 4 string) 16))
888 (epg-signature-set-creation-time
890 (match-string 5 string)))))
892 (defun epg-status-VALIDSIG (process string)
893 (let ((signature (car (epg-context-result-for epg-context 'verify))))
895 (eq (epg-signature-status signature) 'good)
896 (string-match "\\`\\([^ ]+\\) [^ ]+ \\([^ ]+\\) \\([^ ]+\\) \
897 \\([0-9]+\\) [^ ]+ \\([0-9]+\\) \\([0-9]+\\) \\([0-9A-Fa-f][0-9A-Fa-f]\\) \
900 (epg-signature-set-fingerprint
902 (match-string 1 string))
903 (epg-signature-set-creation-time
905 (match-string 2 string))
906 (epg-signature-set-expiration-time
908 (match-string 3 string))
909 ; (epg-signature-set-version
911 ; (string-to-number (match-string 4 string)))
912 (epg-signature-set-pubkey-algorithm
914 (string-to-number (match-string 5 string)))
915 (epg-signature-set-digest-algorithm
917 (string-to-number (match-string 6 string)))
918 ; (epg-signature-set-class
920 ; (string-to-number (match-string 7 string) 16))
923 (defun epg-status-TRUST_UNDEFINED (process string)
924 (let ((signature (car (epg-context-result-for epg-context 'verify))))
926 (eq (epg-signature-status signature) 'good))
927 (epg-signature-set-validity signature 'undefined))))
929 (defun epg-status-TRUST_NEVER (process string)
930 (let ((signature (car (epg-context-result-for epg-context 'verify))))
932 (eq (epg-signature-status signature) 'good))
933 (epg-signature-set-validity signature 'never))))
935 (defun epg-status-TRUST_MARGINAL (process string)
936 (let ((signature (car (epg-context-result-for epg-context 'verify))))
938 (eq (epg-signature-status signature) 'marginal))
939 (epg-signature-set-validity signature 'marginal))))
941 (defun epg-status-TRUST_FULLY (process string)
942 (let ((signature (car (epg-context-result-for epg-context 'verify))))
944 (eq (epg-signature-status signature) 'good))
945 (epg-signature-set-validity signature 'full))))
947 (defun epg-status-TRUST_ULTIMATE (process string)
948 (let ((signature (car (epg-context-result-for epg-context 'verify))))
950 (eq (epg-signature-status signature) 'good))
951 (epg-signature-set-validity signature 'ultimate))))
953 (defun epg-status-PROGRESS (process string)
954 (if (string-match "\\`\\([^ ]+\\) \\([^ ]\\) \\([0-9]+\\) \\([0-9]+\\)"
956 (funcall (if (consp (epg-context-progress-callback epg-context))
957 (car (epg-context-progress-callback epg-context))
958 (epg-context-progress-callback epg-context))
960 (match-string 1 string)
961 (match-string 2 string)
962 (string-to-number (match-string 3 string))
963 (string-to-number (match-string 4 string))
964 (if (consp (epg-context-progress-callback epg-context))
965 (cdr (epg-context-progress-callback epg-context))))))
967 (defun epg-status-DECRYPTION_FAILED (process string)
968 (epg-context-set-result-for
970 (cons 'decryption-failed
971 (epg-context-result-for epg-context 'error))))
973 (defun epg-status-NODATA (process string)
974 (epg-context-set-result-for
976 (cons (cons 'no-data (string-to-number string))
977 (epg-context-result-for epg-context 'error))))
979 (defun epg-status-UNEXPECTED (process string)
980 (epg-context-set-result-for
982 (cons (cons 'unexpected (string-to-number string))
983 (epg-context-result-for epg-context 'error))))
985 (defun epg-status-KEYEXPIRED (process string)
986 (epg-context-set-result-for
988 (cons (cons 'key-expired string)
989 (epg-context-result-for epg-context 'error))))
991 (defun epg-status-KEYREVOKED (process string)
992 (epg-context-set-result-for
995 (epg-context-result-for epg-context 'error))))
997 (defun epg-status-BADARMOR (process string)
998 (epg-context-set-result-for
1001 (epg-context-result-for epg-context 'error))))
1003 (defun epg-status-INV_RECP (process string)
1004 (if (string-match "\\`\\([0-9]+\\) \\(.*\\)" string)
1005 (epg-context-set-result-for
1007 (cons (list 'invalid-recipient
1008 (string-to-number (match-string 1 string))
1009 (match-string 2 string))
1010 (epg-context-result-for epg-context 'error)))))
1012 (defun epg-status-NO_RECP (process string)
1013 (epg-context-set-result-for
1015 (cons 'no-recipients
1016 (epg-context-result-for epg-context 'error))))
1018 (defun epg-status-DELETE_PROBLEM (process string)
1019 (if (string-match "\\`\\([0-9]+\\)" string)
1020 (epg-context-set-result-for
1022 (cons (cons 'delete-problem (string-to-number (match-string 1 string)))
1023 (epg-context-result-for epg-context 'error)))))
1025 (defun epg-status-SIG_CREATED (process string)
1026 (if (string-match "\\`\\([DCS]\\) \\([0-9]+\\) \\([0-9]+\\) \
1027 \\([0-9A-Fa-F][0-9A-Fa-F]\\) \\(.*\\) " string)
1028 (epg-context-set-result-for
1030 (cons (list (cons 'type (string-to-char (match-string 1 string)))
1031 (cons 'pubkey-algorithm
1032 (string-to-number (match-string 2 string)))
1033 (cons 'digest-algorithm
1034 (string-to-number (match-string 3 string)))
1035 (cons 'class (string-to-number (match-string 4 string) 16))
1036 (cons 'creation-time (match-string 5 string))
1037 (cons 'fingerprint (substring string (match-end 0))))
1038 (epg-context-result-for epg-context 'sign)))))
1040 (defun epg-passphrase-callback-function (context key-id handback)
1042 (if (eq key-id 'SYM)
1043 "Passphrase for symmetric encryption: "
1044 (if (eq key-id 'PIN)
1045 "Passphrase for PIN: "
1046 (let ((entry (assoc key-id epg-user-id-alist)))
1048 (format "Passphrase for %s %s: " key-id (cdr entry))
1049 (format "Passphrase for %s: " key-id)))))))
1051 (defun epg-progress-callback-function (context what char current total
1053 (message "%s: %d%%/%d%%" what current total))
1055 (defun epg-configuration ()
1056 "Return a list of internal configuration parameters of `epg-gpg-program'."
1059 (apply #'call-process epg-gpg-program nil (list t nil) nil
1060 '("--with-colons" "--list-config"))
1061 (goto-char (point-min))
1062 (while (re-search-forward "^cfg:\\([^:]+\\):\\(.*\\)" nil t)
1063 (setq type (intern (match-string 1))
1064 config (cons (cons type
1066 '(pubkey cipher digest compress))
1067 (mapcar #'string-to-number
1068 (delete "" (split-string
1075 (defun epg-list-keys-1 (context name mode)
1076 (let ((args (append (list "--with-colons" "--no-greeting" "--batch"
1077 "--with-fingerprint"
1078 "--with-fingerprint"
1079 (if (or (eq mode t) (eq mode 'secret))
1080 "--list-secret-keys"
1084 (unless (eq (epg-context-protocol context) 'CMS)
1085 '("--fixed-list-mode"))
1086 (if name (list name))))
1087 keys string field index)
1089 (apply #'call-process
1090 (if (eq (epg-context-protocol context) 'CMS)
1093 nil (list t nil) nil args)
1094 (goto-char (point-min))
1095 (while (re-search-forward "^[a-z][a-z][a-z]:.*" nil t)
1096 (setq keys (cons (make-vector 15 nil) keys)
1097 string (match-string 0)
1101 (string-match "\\([^:]+\\)?:" string index))
1102 (setq index (match-end 0))
1103 (aset (car keys) field (match-string 1 string))
1104 (setq field (1+ field))))
1107 (defun epg-make-sub-key-1 (line)
1110 (cdr (assq (string-to-char (aref line 1)) epg-key-validity-alist)))
1112 (mapcar (lambda (char) (cdr (assq char epg-key-capablity-alist)))
1114 (member (aref line 0) '("sec" "ssb"))
1115 (string-to-number (aref line 3))
1116 (string-to-number (aref line 2))
1121 (defun epg-list-keys (context &optional name mode)
1122 "Return a list of epg-key objects matched with NAME.
1123 If MODE is nil, only public keyring should be searched.
1124 If MODE is t or 'secret, only secret keyring should be searched.
1125 Otherwise, only public keyring should be searched and the key
1126 signatures should be included."
1127 (let ((lines (epg-list-keys-1 context name mode))
1128 keys cert key-id user-id-string entry)
1131 ((member (aref (car lines) 0) '("pub" "sec" "crt" "crs"))
1133 (epg-key-set-sub-key-list
1135 (nreverse (epg-key-sub-key-list (car keys))))
1136 (epg-key-set-user-id-list
1138 (nreverse (epg-key-user-id-list (car keys))))
1140 (epg-sub-key-id (car (epg-key-sub-key-list (car keys))))
1142 (epg-user-id-string (car (epg-key-user-id-list (car keys))))
1143 entry (assoc key-id epg-user-id-alist))
1145 (setcdr entry user-id-string)
1146 (setq epg-user-id-alist (cons (cons key-id user-id-string)
1147 epg-user-id-alist))))
1148 (setq cert (member (aref (car lines) 0) '("crt" "crs"))
1149 keys (cons (epg-make-key
1150 (if (aref (car lines) 8)
1151 (cdr (assq (string-to-char (aref (car lines) 8))
1152 epg-key-validity-alist))))
1154 (epg-key-set-sub-key-list
1156 (cons (epg-make-sub-key-1 (car lines))
1157 (epg-key-sub-key-list (car keys)))))
1158 ((member (aref (car lines) 0) '("sub" "ssb"))
1159 (epg-key-set-sub-key-list
1161 (cons (epg-make-sub-key-1 (car lines))
1162 (epg-key-sub-key-list (car keys)))))
1163 ((equal (aref (car lines) 0) "uid")
1164 (epg-key-set-user-id-list
1166 (cons (epg-make-user-id
1167 (if (aref (car lines) 1)
1168 (cdr (assq (string-to-char (aref (car lines) 1))
1169 epg-key-validity-alist)))
1172 (epg-dn-from-string (aref (car lines) 9))
1173 (error (aref (car lines) 9)))
1174 (aref (car lines) 9)))
1175 (epg-key-user-id-list (car keys)))))
1176 ((equal (aref (car lines) 0) "fpr")
1177 (epg-sub-key-set-fingerprint (car (epg-key-sub-key-list (car keys)))
1178 (aref (car lines) 9))))
1179 (setq lines (cdr lines)))
1181 (epg-key-set-sub-key-list
1183 (nreverse (epg-key-sub-key-list (car keys))))
1184 (epg-key-set-user-id-list
1186 (nreverse (epg-key-user-id-list (car keys))))
1188 (epg-sub-key-id (car (epg-key-sub-key-list (car keys))))
1190 (epg-user-id-string (car (epg-key-user-id-list (car keys))))
1191 entry (assoc key-id epg-user-id-alist))
1193 (setcdr entry user-id-string)
1194 (setq epg-user-id-alist (cons (cons key-id user-id-string)
1195 epg-user-id-alist))))
1198 (if (fboundp 'make-temp-file)
1199 (defalias 'epg-make-temp-file 'make-temp-file)
1200 ;; stolen from poe.el.
1201 (defun epg-make-temp-file (prefix)
1202 "Create a temporary file.
1203 The returned file name (created by appending some random characters at the end
1204 of PREFIX, and expanding against `temporary-file-directory' if necessary),
1205 is guaranteed to point to a newly created empty file.
1206 You can then use `write-region' to write new data into the file."
1207 (let (tempdir tempfile)
1208 (setq prefix (expand-file-name prefix temporary-file-directory))
1211 ;; First, create a temporary directory.
1212 (while (condition-case ()
1214 (setq tempdir (make-temp-name
1216 (file-name-directory prefix)
1218 ;; return nil or signal an error.
1219 (make-directory tempdir))
1221 (file-already-exists t)))
1222 (set-file-modes tempdir 448)
1223 ;; Second, create a temporary file in the tempdir.
1224 ;; There *is* a race condition between `make-temp-name'
1225 ;; and `write-region', but we don't care it since we are
1226 ;; in a private directory now.
1227 (setq tempfile (make-temp-name (concat tempdir "/EMU")))
1228 (write-region "" nil tempfile nil 'silent)
1229 (set-file-modes tempfile 384)
1230 ;; Finally, make a hard-link from the tempfile.
1231 (while (condition-case ()
1233 (setq file (make-temp-name prefix))
1234 ;; return nil or signal an error.
1235 (add-name-to-file tempfile file))
1237 (file-already-exists t)))
1239 ;; Cleanup the tempfile.
1241 (file-exists-p tempfile)
1242 (delete-file tempfile))
1243 ;; Cleanup the tempdir.
1245 (file-directory-p tempdir)
1246 (delete-directory tempdir))))))
1249 (defun epg-cancel (context)
1250 (if (eq (process-status (epg-context-process context)) 'run)
1251 (delete-process (epg-context-process context))))
1254 (defun epg-start-decrypt (context cipher)
1255 "Initiate a decrypt operation on CIPHER.
1256 CIPHER is a data object.
1258 If you use this function, you will need to wait for the completion of
1259 `epg-gpg-program' by using `epg-wait-for-completion' and call
1260 `epg-reset' to clear a temporaly output file.
1261 If you are unsure, use synchronous version of this function
1262 `epg-decrypt-file' or `epg-decrypt-string' instead."
1263 (unless (epg-data-file cipher)
1264 (error "Not a file"))
1265 (epg-context-set-result context nil)
1266 (epg-start context (list "--decrypt" (epg-data-file cipher)))
1267 ;; `gpgsm' does not read passphrase from stdin, so waiting is not needed.
1268 (unless (eq (epg-context-protocol context) 'CMS)
1269 (epg-wait-for-status context '("BEGIN_DECRYPTION"))))
1272 (defun epg-decrypt-file (context cipher plain)
1273 "Decrypt a file CIPHER and store the result to a file PLAIN.
1274 If PLAIN is nil, it returns the result as a string."
1278 (epg-context-set-output-file context plain)
1279 (epg-context-set-output-file context
1280 (epg-make-temp-file "epg-output")))
1281 (epg-start-decrypt context (epg-make-data-from-file cipher))
1282 (epg-wait-for-completion context)
1283 (if (epg-context-result-for context 'error)
1284 (error "Decrypt failed: %S"
1285 (epg-context-result-for context 'error)))
1287 (epg-read-output context)))
1289 (epg-delete-output-file context))
1290 (epg-reset context)))
1293 (defun epg-decrypt-string (context cipher)
1294 "Decrypt a string CIPHER and return the plain text."
1295 (let ((input-file (epg-make-temp-file "epg-input"))
1296 (coding-system-for-write 'binary))
1299 (write-region cipher nil input-file nil 'quiet)
1300 (epg-context-set-output-file context
1301 (epg-make-temp-file "epg-output"))
1302 (epg-start-decrypt context (epg-make-data-from-file input-file))
1304 (epg-wait-for-completion context)
1305 (if (epg-context-result-for context 'error)
1306 (error "Decrypt failed: %S"
1307 (epg-context-result-for context 'error)))
1308 (epg-read-output context))
1309 (epg-delete-output-file context)
1310 (if (file-exists-p input-file)
1311 (delete-file input-file))
1312 (epg-reset context))))
1315 (defun epg-start-verify (context signature &optional signed-text)
1316 "Initiate a verify operation on SIGNATURE.
1317 SIGNATURE and SIGNED-TEXT are a data object if they are specified.
1319 For a detached signature, both SIGNATURE and SIGNED-TEXT should be set.
1320 For a normal or a clear text signature, SIGNED-TEXT should be nil.
1322 If you use this function, you will need to wait for the completion of
1323 `epg-gpg-program' by using `epg-wait-for-completion' and call
1324 `epg-reset' to clear a temporaly output file.
1325 If you are unsure, use synchronous version of this function
1326 `epg-verify-file' or `epg-verify-string' instead."
1327 (epg-context-set-result context nil)
1329 ;; Detached signature.
1330 (if (epg-data-file signed-text)
1331 (epg-start context (list "--verify" (epg-data-file signature)
1332 (epg-data-file signed-text)))
1333 (epg-start context (list "--verify" (epg-data-file signature) "-"))
1334 (if (eq (process-status (epg-context-process context)) 'run)
1335 (process-send-string (epg-context-process context)
1336 (epg-data-string signed-text))))
1337 ;; Normal (or cleartext) signature.
1338 (if (epg-data-file signature)
1339 (epg-start context (list "--verify" (epg-data-file signature)))
1340 (epg-start context (list "--verify"))
1341 (if (eq (process-status (epg-context-process context)) 'run)
1342 (process-send-string (epg-context-process context)
1343 (epg-data-string signature))))))
1346 (defun epg-verify-file (context signature &optional signed-text plain)
1347 "Verify a file SIGNATURE.
1348 SIGNED-TEXT and PLAIN are also a file if they are specified.
1350 For a detached signature, both SIGNATURE and SIGNED-TEXT should be string.
1351 For a normal or a clear text signature, SIGNED-TEXT should be nil."
1355 (epg-context-set-output-file context plain)
1356 (epg-context-set-output-file context
1357 (epg-make-temp-file "epg-output")))
1359 (epg-start-verify context
1360 (epg-make-data-from-file signature)
1361 (epg-make-data-from-file signed-text))
1362 (epg-start-verify context
1363 (epg-make-data-from-file signature)))
1364 (epg-wait-for-completion context)
1365 ; (if (epg-context-result-for context 'error)
1366 ; (error "Verify failed: %S"
1367 ; (epg-context-result-for context 'error)))
1369 (epg-read-output context)))
1371 (epg-delete-output-file context))
1372 (epg-reset context)))
1375 (defun epg-verify-string (context signature &optional signed-text)
1376 "Verify a string SIGNATURE.
1377 SIGNED-TEXT is a string if it is specified.
1379 For a detached signature, both SIGNATURE and SIGNED-TEXT should be string.
1380 For a normal or a clear text signature, SIGNED-TEXT should be nil."
1381 (let ((coding-system-for-write 'binary)
1385 (epg-context-set-output-file context
1386 (epg-make-temp-file "epg-output"))
1389 (setq input-file (epg-make-temp-file "epg-signature"))
1390 (write-region signature nil input-file nil 'quiet)
1391 (epg-start-verify context
1392 (epg-make-data-from-file input-file)
1393 (epg-make-data-from-string signed-text)))
1394 (epg-start-verify context (epg-make-data-from-string signature)))
1396 (epg-wait-for-completion context)
1397 ; (if (epg-context-result-for context 'error)
1398 ; (error "Verify failed: %S"
1399 ; (epg-context-result-for context 'error)))
1400 (epg-read-output context))
1401 (epg-delete-output-file context)
1403 (file-exists-p input-file))
1404 (delete-file input-file))
1405 (epg-reset context))))
1408 (defun epg-start-sign (context plain &optional mode)
1409 "Initiate a sign operation on PLAIN.
1410 PLAIN is a data object.
1412 If optional 3rd argument MODE is 'clearsign, it makes a clear text signature.
1413 If MODE is t or 'detached, it makes a detached signature.
1414 Otherwise, it makes a normal signature.
1416 If you use this function, you will need to wait for the completion of
1417 `epg-gpg-program' by using `epg-wait-for-completion' and call
1418 `epg-reset' to clear a temporaly output file.
1419 If you are unsure, use synchronous version of this function
1420 `epg-sign-file' or `epg-sign-string' instead."
1421 (epg-context-set-result context nil)
1423 (append (list (if (eq mode 'clearsign)
1425 (if (or (eq mode t) (eq mode 'detached))
1433 (car (epg-key-sub-key-list signer)))))
1434 (epg-context-signers context)))
1435 (if (epg-data-file plain)
1436 (list (epg-data-file plain)))))
1437 ;; `gpgsm' does not read passphrase from stdin, so waiting is not needed.
1438 (unless (eq (epg-context-protocol context) 'CMS)
1439 (epg-wait-for-status context '("BEGIN_SIGNING")))
1440 (if (and (epg-data-string plain)
1441 (eq (process-status (epg-context-process context)) 'run))
1442 (process-send-string (epg-context-process context)
1443 (epg-data-string plain))))
1446 (defun epg-sign-file (context plain signature &optional mode)
1447 "Sign a file PLAIN and store the result to a file SIGNATURE.
1448 If SIGNATURE is nil, it returns the result as a string.
1449 If optional 3rd argument MODE is 'clearsign, it makes a clear text signature.
1450 If MODE is t or 'detached, it makes a detached signature.
1451 Otherwise, it makes a normal signature."
1455 (epg-context-set-output-file context signature)
1456 (epg-context-set-output-file context
1457 (epg-make-temp-file "epg-output")))
1458 (epg-start-sign context (epg-make-data-from-file plain) mode)
1459 (epg-wait-for-completion context)
1460 (if (epg-context-result-for context 'sign)
1461 (if (epg-context-result-for context 'error)
1462 (message "Sign warning: %S"
1463 (epg-context-result-for context 'error)))
1464 (if (epg-context-result-for context 'error)
1465 (error "Sign failed: %S"
1466 (epg-context-result-for context 'error))
1467 (error "Sign failed")))
1469 (epg-read-output context)))
1471 (epg-delete-output-file context))
1472 (epg-reset context)))
1475 (defun epg-sign-string (context plain &optional mode)
1476 "Sign a string PLAIN and return the output as string.
1477 If optional 3rd argument MODE is 'clearsign, it makes a clear text signature.
1478 If MODE is t or 'detached, it makes a detached signature.
1479 Otherwise, it makes a normal signature."
1482 (epg-context-set-output-file context
1483 (epg-make-temp-file "epg-output"))
1484 (epg-start-sign context (epg-make-data-from-string plain) mode)
1486 (epg-wait-for-completion context)
1487 (unless (epg-context-result-for context 'sign)
1488 (if (epg-context-result-for context 'error)
1489 (error "Sign failed: %S"
1490 (epg-context-result-for context 'error))
1491 (error "Sign failed")))
1492 (epg-read-output context))
1493 (epg-delete-output-file context)
1494 (epg-reset context)))
1497 (defun epg-start-encrypt (context plain recipients
1498 &optional sign always-trust)
1499 "Initiate an encrypt operation on PLAIN.
1500 PLAIN is a data object.
1501 If RECIPIENTS is nil, it performs symmetric encryption.
1503 If you use this function, you will need to wait for the completion of
1504 `epg-gpg-program' by using `epg-wait-for-completion' and call
1505 `epg-reset' to clear a temporaly output file.
1506 If you are unsure, use synchronous version of this function
1507 `epg-encrypt-file' or `epg-encrypt-string' instead."
1508 (epg-context-set-result context nil)
1510 (append (if always-trust '("--always-trust"))
1511 (if recipients '("--encrypt") '("--symmetric"))
1515 (mapcar (lambda (signer)
1517 (epg-context-signers context)))))
1523 (car (epg-key-sub-key-list recipient)))))
1525 (if (epg-data-file plain)
1526 (list (epg-data-file plain)))))
1527 ;; `gpgsm' does not read passphrase from stdin, so waiting is not needed.
1528 (unless (eq (epg-context-protocol context) 'CMS)
1530 (epg-wait-for-status context '("BEGIN_SIGNING"))
1531 (epg-wait-for-status context '("BEGIN_ENCRYPTION"))))
1532 (if (and (epg-data-string plain)
1533 (eq (process-status (epg-context-process context)) 'run))
1534 (process-send-string (epg-context-process context)
1535 (epg-data-string plain))))
1538 (defun epg-encrypt-file (context plain recipients
1539 cipher &optional sign always-trust)
1540 "Encrypt a file PLAIN and store the result to a file CIPHER.
1541 If CIPHER is nil, it returns the result as a string.
1542 If RECIPIENTS is nil, it performs symmetric encryption."
1546 (epg-context-set-output-file context cipher)
1547 (epg-context-set-output-file context
1548 (epg-make-temp-file "epg-output")))
1549 (epg-start-encrypt context (epg-make-data-from-file plain)
1550 recipients sign always-trust)
1551 (epg-wait-for-completion context)
1553 (not (epg-context-result-for context 'sign)))
1554 (if (epg-context-result-for context 'error)
1555 (error "Sign failed: %S"
1556 (epg-context-result-for context 'error))
1557 (error "Sign failed")))
1558 (if (epg-context-result-for context 'error)
1559 (error "Encrypt failed: %S"
1560 (epg-context-result-for context 'error)))
1562 (epg-read-output context)))
1564 (epg-delete-output-file context))
1565 (epg-reset context)))
1568 (defun epg-encrypt-string (context plain recipients
1569 &optional sign always-trust)
1570 "Encrypt a string PLAIN.
1571 If RECIPIENTS is nil, it performs symmetric encryption."
1574 (epg-context-set-output-file context
1575 (epg-make-temp-file "epg-output"))
1576 (epg-start-encrypt context (epg-make-data-from-string plain)
1577 recipients sign always-trust)
1579 (epg-wait-for-completion context)
1581 (not (epg-context-result-for context 'sign)))
1582 (if (epg-context-result-for context 'error)
1583 (error "Sign failed: %S"
1584 (epg-context-result-for context 'error))
1585 (error "Sign failed")))
1586 (if (epg-context-result-for context 'error)
1587 (error "Encrypt failed: %S"
1588 (epg-context-result-for context 'error)))
1589 (epg-read-output context))
1590 (epg-delete-output-file context)
1591 (epg-reset context)))
1594 (defun epg-start-export-keys (context keys)
1595 "Initiate an export keys operation.
1597 If you use this function, you will need to wait for the completion of
1598 `epg-gpg-program' by using `epg-wait-for-completion' and call
1599 `epg-reset' to clear a temporaly output file.
1600 If you are unsure, use synchronous version of this function
1601 `epg-export-keys-to-file' or `epg-export-keys-to-string' instead."
1602 (epg-context-set-result context nil)
1603 (epg-start context (cons "--export"
1607 (car (epg-key-sub-key-list key))))
1611 (defun epg-export-keys-to-file (context keys file)
1612 "Extract public KEYS."
1616 (epg-context-set-output-file context file)
1617 (epg-context-set-output-file context
1618 (epg-make-temp-file "epg-output")))
1619 (epg-start-export-keys context keys)
1620 (epg-wait-for-completion context)
1621 (if (epg-context-result-for context 'error)
1622 (error "Export keys failed: %S"
1623 (epg-context-result-for context 'error)))
1625 (epg-read-output context)))
1627 (epg-delete-output-file context))
1628 (epg-reset context)))
1631 (defun epg-export-keys-to-string (context keys)
1632 "Extract public KEYS and return them as a string."
1633 (epg-export-keys-to-file context keys nil))
1636 (defun epg-start-import-keys (context keys)
1637 "Initiate an import keys operation.
1638 KEYS is a data object.
1640 If you use this function, you will need to wait for the completion of
1641 `epg-gpg-program' by using `epg-wait-for-completion' and call
1642 `epg-reset' to clear a temporaly output file.
1643 If you are unsure, use synchronous version of this function
1644 `epg-import-keys-from-file' or `epg-import-keys-from-string' instead."
1645 (epg-context-set-result context nil)
1646 (epg-context-set-output-file context (epg-make-temp-file "epg-output"))
1647 (epg-start context (list "--import" (epg-data-file keys)))
1648 (if (and (epg-data-string keys)
1649 (eq (process-status (epg-context-process context)) 'run))
1650 (process-send-string (epg-context-process context)
1651 (epg-data-string keys))))
1653 (defun epg-import-keys-1 (context keys)
1656 (epg-start-import-keys context keys)
1657 (if (epg-data-file keys)
1658 (epg-flush context))
1659 (epg-wait-for-completion context)
1660 (if (epg-context-result-for context 'error)
1661 (error "Import keys failed: %S"
1662 (epg-context-result-for context 'error)))
1663 (epg-read-output context))
1664 (epg-reset context)))
1667 (defun epg-import-keys-from-file (context keys)
1668 "Add keys from a file KEYS."
1669 (epg-import-keys-1 context (epg-make-data-from-file keys)))
1672 (defun epg-import-keys-from-string (context keys)
1673 "Add keys from a string KEYS."
1674 (epg-import-keys-1 context (epg-make-data-from-string keys)))
1677 (defun epg-start-delete-keys (context keys &optional allow-secret)
1678 "Initiate an delete keys operation.
1680 If you use this function, you will need to wait for the completion of
1681 `epg-gpg-program' by using `epg-wait-for-completion' and call
1682 `epg-reset' to clear a temporaly output file.
1683 If you are unsure, use synchronous version of this function
1684 `epg-delete-keys' instead."
1685 (epg-context-set-result context nil)
1686 (epg-start context (cons (if allow-secret
1687 "--delete-secret-key"
1692 (car (epg-key-sub-key-list key))))
1696 (defun epg-delete-keys (context keys &optional allow-secret)
1697 "Delete KEYS from the key ring."
1700 (epg-start-delete-keys context keys allow-secret)
1701 (epg-wait-for-completion context)
1702 (if (epg-context-result-for context 'error)
1703 (error "Delete keys failed: %S"
1704 (epg-context-result-for context 'error))))
1705 (epg-reset context)))
1708 (defun epg-start-sign-keys (context keys &optional local)
1709 "Initiate an sign keys operation.
1711 If you use this function, you will need to wait for the completion of
1712 `epg-gpg-program' by using `epg-wait-for-completion' and call
1713 `epg-reset' to clear a temporaly output file.
1714 If you are unsure, use synchronous version of this function
1715 `epg-sign-keys' instead."
1716 (epg-context-set-result context nil)
1717 (epg-start context (cons (if local
1723 (car (epg-key-sub-key-list key))))
1727 (defun epg-sign-keys (context keys &optional local)
1728 "Sign KEYS from the key ring."
1731 (epg-start-sign-keys context keys local)
1732 (epg-wait-for-completion context)
1733 (if (epg-context-result-for context 'error)
1734 (error "Sign keys failed: %S"
1735 (epg-context-result-for context 'error))))
1736 (epg-reset context)))
1738 (defun epg-decode-hexstring (string)
1740 (while (eq index (string-match "[0-9A-Fa-f][0-9A-Fa-f]" string index))
1741 (setq string (replace-match "\\x\\&" t nil string)
1743 (car (read-from-string (concat "\"" string "\"")))))
1745 (defun epg-decode-quotedstring (string)
1747 (while (string-match "\\\\\\(\\([,=+<>#;\\\"]\\)\\|\
1748 \\([0-9A-Fa-f][0-9A-Fa-f]\\)\\|\\(.\\)\\)"
1750 (if (match-beginning 2)
1751 (setq string (replace-match "\\2" t nil string)
1753 (if (match-beginning 3)
1754 (setq string (replace-match "\\x\\3" t nil string)
1756 (setq string (replace-match "\\\\\\\\\\4" t nil string)
1757 index (+ index 3)))))
1758 (car (read-from-string (concat "\"" string "\"")))))
1760 (defun epg-dn-from-string (string)
1761 "Parse STRING as LADPv3 Distinguished Names (RFC2253).
1762 The return value is an alist mapping from types to values."
1764 (length (length string))
1765 alist type value group)
1766 (while (< index length)
1767 (if (eq index (string-match "[ \t\n\r]*" string index))
1768 (setq index (match-end 0)))
1769 (if (eq index (string-match
1770 "\\([0-9]+\\(\\.[0-9]+\\)*\\)\[ \t\n\r]*=[ \t\n\r]*"
1772 (setq type (match-string 1 string)
1773 index (match-end 0))
1774 (if (eq index (string-match "\\([0-9A-Za-z]+\\)[ \t\n\r]*=[ \t\n\r]*"
1776 (setq type (match-string 1 string)
1777 index (match-end 0))))
1779 (error "Invalid type"))
1780 (if (eq index (string-match
1781 "\\([^,=+<>#;\\\"]\\|\\\\.\\)+"
1783 (setq index (match-end 0)
1784 value (epg-decode-quotedstring (match-string 0 string)))
1785 (if (eq index (string-match "#\\([0-9A-Fa-f]+\\)" string index))
1786 (setq index (match-end 0)
1787 value (epg-decode-hexstring (match-string 1 string)))
1788 (if (eq index (string-match "\"\\([^\\\"]\\|\\\\.\\)*\""
1790 (setq index (match-end 0)
1791 value (epg-decode-quotedstring (match-string 0 string))))))
1793 (if (stringp (car (car alist)))
1794 (setcar alist (list (cons type value) (car alist)))
1795 (setcar alist (cons (cons type value) (car alist))))
1796 (if (consp (car (car alist)))
1797 (setcar alist (nreverse (car alist))))
1798 (setq alist (cons (cons type value) alist)
1801 (if (eq index (string-match "[ \t\n\r]*\\([,;+]\\)" string index))
1802 (setq index (match-end 0)
1803 group (eq (aref string (match-beginning 1)) ?+))))
1806 (defun epg-decode-dn (alist)
1807 "Convert ALIST returned by `epg-dn-from-string' to a human readable form.
1808 Type names are resolved using `epg-dn-type-alist'."
1811 (if (stringp (car rdn))
1812 (let ((entry (assoc (car rdn) epg-dn-type-alist)))
1814 (format "%s=%s" (cdr entry) (cdr rdn))
1815 (format "%s=%s" (car rdn) (cdr rdn))))
1816 (concat "(" (epg-decode-dn rdn) ")")))
1822 ;;; epg.el ends here