2006-04-06 Romain Francoise <romain@orebokech.com>

	* pgg-gpg.el: Sync back with Gnus 5.10, reverting changes that add
	symmetric encryption features and a new asynchronous interface to
	GnuPG.  This new version is version 1.4, plus whitespace changes.

1 files changed, 231 insertions, 237 deletions

diff --git a/lisp/pgg-gpg.el b/lisp/pgg-gpg.el
index d8ceeabc25f..78db15787c0 100644
--- a/lisp/pgg-gpg.el
+++ b/lisp/pgg-gpg.el
@@ -4,7 +4,7 @@
 ;;   2005, 2006 Free Software Foundation, Inc.
 
 ;; Author: Daiki Ueno <ueno@unixuser.org>
-;; Symmetric encryption support added by: Sascha Wilde <wilde@sha-bang.de>
+;; Symmetric encryption added by: Sascha Wilde <wilde@sha-bang.de>
 ;; Created: 1999/10/28
 ;; Keywords: PGP, OpenPGP, GnuPG
 
@@ -28,6 +28,7 @@
 ;;; Code:
 
 (eval-when-compile
+  (require 'cl)				; for gpg macros
   (require 'pgg))
 
 (defgroup pgg-gpg ()
@@ -50,180 +51,85 @@
   :type '(choice (const :tag "New `--recipient' option" "--recipient")
 		 (const :tag "Old `--remote-user' option" "--remote-user")))
 
-(defcustom pgg-gpg-use-agent nil
-  "Whether to use gnupg agent for key caching."
-  :group 'pgg-gpg
-  :type 'boolean)
-
 (defvar pgg-gpg-user-id nil
   "GnuPG ID of your default identity.")
 
-(defvar pgg-gpg-user-id-alist nil
-  "An alist mapping from key ID to user ID.")
-
-(defvar pgg-gpg-read-point nil)
-(defvar pgg-gpg-output-file-name nil)
-(defvar pgg-gpg-pending-status-list nil)
-(defvar pgg-gpg-key-id nil)
-(defvar pgg-gpg-passphrase nil)
-(defvar pgg-gpg-debug nil)
-
-(defun pgg-gpg-start-process (args)
+(defun pgg-gpg-process-region (start end passphrase program args)
   (let* ((output-file-name (pgg-make-temp-file "pgg-output"))
 	 (args
-	  (append (list "--no-tty"
-			"--status-fd" "1"
-			"--command-fd" "0"
-			"--yes" ; overwrite
-			"--output" output-file-name)
-		  (if pgg-gpg-use-agent '("--use-agent"))
-		  pgg-gpg-extra-args
-		  args))
-	 (coding-system-for-write 'binary)
-	 (process-connection-type nil)
+	  `("--status-fd" "2"
+	    ,@(if passphrase '("--passphrase-fd" "0"))
+	    "--yes" ; overwrite
+	    "--output" ,output-file-name
+	    ,@pgg-gpg-extra-args ,@args))
+	 (output-buffer pgg-output-buffer)
+	 (errors-buffer pgg-errors-buffer)
 	 (orig-mode (default-file-modes))
-	 (buffer (generate-new-buffer " *pgg-gpg*"))
-	 process)
-    (with-current-buffer buffer
-      (make-local-variable 'pgg-gpg-read-point)
-      (setq pgg-gpg-read-point (point-min))
-      (make-local-variable 'pgg-gpg-output-file-name)
-      (setq pgg-gpg-output-file-name output-file-name)
-      (make-local-variable 'pgg-gpg-pending-status-list)
-      (setq pgg-gpg-pending-status-list nil)
-      (make-local-variable 'pgg-gpg-key-id)
-      (setq pgg-gpg-key-id nil)
-      (make-local-variable 'pgg-gpg-passphrase)
-      (setq pgg-gpg-passphrase nil))
+	 (process-connection-type nil)
+	 exit-status)
+    (with-current-buffer (get-buffer-create errors-buffer)
+      (buffer-disable-undo)
+      (erase-buffer))
     (unwind-protect
 	(progn
 	  (set-default-file-modes 448)
-	  (setq process
-		(apply #'start-process "pgg-gpg" buffer pgg-gpg-program args)))
-      (set-default-file-modes orig-mode))
-    (set-process-filter process #'pgg-gpg-process-filter)
-    (set-process-sentinel process #'pgg-gpg-process-sentinel)
-    process))
-
-(defun pgg-gpg-process-filter (process input)
-  (if pgg-gpg-debug
-      (save-excursion
-	(set-buffer (get-buffer-create  " *pgg-gpg-debug*"))
-	(goto-char (point-max))
-	(insert input)))
-  (if (buffer-live-p (process-buffer process))
-      (save-excursion
-	(set-buffer (process-buffer process))
-	(goto-char (point-max))
-	(insert input)
-	(goto-char pgg-gpg-read-point)
-	(beginning-of-line)
-	(while (looking-at ".*\n")	;the input line is finished
-	  (save-excursion
-	    (if (looking-at "\\[GNUPG:] \\([A-Z_]+\\)\\>.*")
-		(let* ((status (match-string 1))
-		       (symbol (intern-soft (concat "pgg-gpg-status-" status)))
-		       (entry (member status pgg-gpg-pending-status-list)))
-		  (if entry
-		      (setq pgg-gpg-pending-status-list
-			    (delq (car entry)
-				  pgg-gpg-pending-status-list)))
-		  (if (and symbol
-			   (fboundp symbol))
-		      (funcall symbol process (buffer-substring
-					       (match-beginning 1)
-					       (match-end 0)))))))
-	  (forward-line))
-	(setq pgg-gpg-read-point (point)))))
-
-(defun pgg-gpg-process-sentinel (process status)
-  (if (buffer-live-p (process-buffer process))
-      (save-excursion
-	(set-buffer (process-buffer process))
-	(when pgg-gpg-passphrase
-	  (fillarray pgg-gpg-passphrase 0)
-	  (setq pgg-gpg-passphrase nil))
-	;; Copy the contents of process-buffer to pgg-errors-buffer.
-	(set-buffer (get-buffer-create pgg-errors-buffer))
-	(buffer-disable-undo)
-	(erase-buffer)
-	(insert-buffer-substring (process-buffer process))
-	;; Read the contents of the output file to pgg-output-buffer.
-	(set-buffer (get-buffer-create pgg-output-buffer))
-	(buffer-disable-undo)
-	(erase-buffer)
-	(if (equal status "finished\n")
-	    (let ((output-file-name
-		   (with-current-buffer (process-buffer process)
-		     pgg-gpg-output-file-name)))
-	      (when (file-exists-p output-file-name)
+	  (let ((coding-system-for-write 'binary)
+		(input (buffer-substring-no-properties start end))
+		(default-enable-multibyte-characters nil))
+	    (with-temp-buffer
+	      (when passphrase
+		(insert passphrase "\n"))
+	      (insert input)
+	      (setq exit-status
+		    (apply #'call-process-region (point-min) (point-max) program
+			   nil errors-buffer nil args))))
+	  (with-current-buffer (get-buffer-create output-buffer)
+	    (buffer-disable-undo)
+	    (erase-buffer)
+	    (if (file-exists-p output-file-name)
 		(let ((coding-system-for-read (if pgg-text-mode
 						  'raw-text
 						'binary)))
-		  (insert-file-contents output-file-name))
-		(delete-file output-file-name))))
-	(kill-buffer (process-buffer process)))))
-
-(defun pgg-gpg-wait-for-status (process status-list)
-  (with-current-buffer (process-buffer process)
-    (setq pgg-gpg-pending-status-list status-list)
-    (while (and (eq (process-status process) 'run)
-		pgg-gpg-pending-status-list)
-      (accept-process-output process 1))))
-
-(defun pgg-gpg-wait-for-completion (process)
-  (process-send-eof process)
-  (while (eq (process-status process) 'run)
-    ;; We can't use accept-process-output instead of sit-for here
-    ;; because it may cause an interrupt during the sentinel execution.
-    (sit-for 0.1)))
-
-(defun pgg-gpg-status-USERID_HINT (process line)
-  (if (string-match "\\`USERID_HINT \\([^ ]+\\) \\(.*\\)" line)
-      (let* ((key-id (match-string 1 line))
-	     (user-id (match-string 2 line))
-	     (entry (assoc key-id pgg-gpg-user-id-alist)))
-	(if entry
-	    (setcdr entry user-id)
-	  (setq pgg-gpg-user-id-alist (cons (cons key-id user-id)
-					    pgg-gpg-user-id-alist))))))
-
-(defun pgg-gpg-status-NEED_PASSPHRASE (process line)
-  (if (string-match "\\`NEED_PASSPHRASE \\([^ ]+\\)" line)
-      (setq pgg-gpg-key-id (match-string 1 line))))
-
-(defun pgg-gpg-status-NEED_PASSPHRASE_SYM (process line)
-  (setq pgg-gpg-key-id 'SYM))
-
-(defun pgg-gpg-status-NEED_PASSPHRASE_PIN (process line)
-  (setq pgg-gpg-key-id 'PIN))
-
-(defun pgg-gpg-status-GET_HIDDEN (process line)
-  (let ((entry (assoc pgg-gpg-key-id pgg-gpg-user-id-alist)))
-    (if (setq pgg-gpg-passphrase
-	      (if (eq pgg-gpg-key-id 'SYM)
-		  (pgg-read-passphrase
-		   "GnuPG passphrase for symmetric encryption: ")
-		(pgg-read-passphrase
-		 (format "GnuPG passphrase for %s: "
-			 (if entry
-			     (cdr entry)
-			   pgg-gpg-key-id))
-		 (if (eq pgg-gpg-key-id 'PIN)
-		     "PIN"
-		   pgg-gpg-key-id))))
-	(process-send-string process (concat pgg-gpg-passphrase "\n")))))
-
-(defun pgg-gpg-status-GOOD_PASSPHRASE (process line)
-  (when (and pgg-gpg-passphrase
-	     (stringp pgg-gpg-key-id))
-    (pgg-add-passphrase-to-cache pgg-gpg-key-id pgg-gpg-passphrase)
-    (setq pgg-gpg-passphrase nil)))
-
-(defun pgg-gpg-status-BAD_PASSPHRASE (process line)
-  (when pgg-gpg-passphrase
-    (fillarray pgg-gpg-passphrase 0)
-    (setq pgg-gpg-passphrase nil)))
+		  (insert-file-contents output-file-name)))
+	    (set-buffer errors-buffer)
+	    (if (not (equal exit-status 0))
+		(insert (format "\n%s exited abnormally: '%s'\n"
+				program exit-status)))))
+      (if (file-exists-p output-file-name)
+	  (delete-file output-file-name))
+      (set-default-file-modes orig-mode))))
+
+(defun pgg-gpg-possibly-cache-passphrase (passphrase &optional key notruncate)
+  (if (and pgg-cache-passphrase
+	   (progn
+	     (goto-char (point-min))
+	     (re-search-forward "^\\[GNUPG:] \\(GOOD_PASSPHRASE\\>\\)\\|\\(SIG_CREATED\\)" nil t)))
+      (pgg-add-passphrase-to-cache
+       (or key
+	   (progn
+	     (goto-char (point-min))
+	     (if (re-search-forward
+		  "^\\[GNUPG:] NEED_PASSPHRASE\\(_PIN\\)? \\w+ ?\\w*" nil t)
+		 (substring (match-string 0) -8))))
+       passphrase
+       notruncate)))
+
+(defvar pgg-gpg-all-secret-keys 'unknown)
+
+(defun pgg-gpg-lookup-all-secret-keys ()
+  "Return all secret keys present in secret key ring."
+  (when (eq pgg-gpg-all-secret-keys 'unknown)
+    (setq pgg-gpg-all-secret-keys '())
+    (let ((args (list "--with-colons" "--no-greeting" "--batch"
+		      "--list-secret-keys")))
+      (with-temp-buffer
+	(apply #'call-process pgg-gpg-program nil t nil args)
+	(goto-char (point-min))
+	(while (re-search-forward
+		"^\\(sec\\|pub\\):[^:]*:[^:]*:[^:]*:\\([^:]*\\)" nil t)
+	  (push (substring (match-string 2) 8)
+		pgg-gpg-all-secret-keys)))))
+  pgg-gpg-all-secret-keys)
 
 (defun pgg-gpg-lookup-key (string &optional type)
   "Search keys associated with STRING."
@@ -237,15 +143,52 @@
 			     nil t)
 	  (substring (match-string 2) 8)))))
 
+(defun pgg-gpg-lookup-key-owner (string &optional all)
+  "Search keys associated with STRING and return owner of identified key.
+
+The value may be just the bare key id, or it may be a combination of the
+user name associated with the key and the key id, with the key id enclosed
+in \"<...>\" angle brackets.
+
+Optional ALL non-nil means search all keys, including secret keys."
+  (let ((args (list "--with-colons" "--no-greeting" "--batch"
+		    (if all "--list-secret-keys" "--list-keys")
+		    string))
+	(key-regexp (concat "^\\(sec\\|pub\\)"
+			    ":[^:]*:[^:]*:[^:]*:\\([^:]*\\):[^:]*"
+			    ":[^:]*:[^:]*:[^:]*:\\([^:]*\\):")))
+    (with-temp-buffer
+      (apply #'call-process pgg-gpg-program nil t nil args)
+      (goto-char (point-min))
+      (if (re-search-forward key-regexp
+			     nil t)
+	  (match-string 3)))))
+
+(defun pgg-gpg-key-id-from-key-owner (key-owner)
+  (cond ((not key-owner) nil)
+	;; Extract bare key id from outermost paired angle brackets, if any:
+	((string-match "[^<]*<\\(.+\\)>[^>]*" key-owner)
+	 (substring key-owner (match-beginning 1)(match-end 1)))
+	(key-owner)))
+
 (defun pgg-gpg-encrypt-region (start end recipients &optional sign passphrase)
   "Encrypt the current region between START and END.
 
-If optional argument SIGN is non-nil, do a combined sign and encrypt."
+If optional argument SIGN is non-nil, do a combined sign and encrypt.
+
+If optional PASSPHRASE is not specified, it will be obtained from the
+passphrase cache or user."
   (let* ((pgg-gpg-user-id (or pgg-gpg-user-id pgg-default-user-id))
+	 (passphrase (or passphrase
+			 (when sign
+			   (pgg-read-passphrase
+			    (format "GnuPG passphrase for %s: "
+				    pgg-gpg-user-id)
+			    pgg-gpg-user-id))))
 	 (args
 	  (append
-	   '("--armor" "--always-trust" "--encrypt")
-	   (if pgg-text-mode '("--textmode"))
+	   (list "--batch" "--armor" "--always-trust" "--encrypt")
+	   (if pgg-text-mode (list "--textmode"))
 	   (if sign (list "--sign" "--local-user" pgg-gpg-user-id))
 	   (if recipients
 	       (apply #'nconc
@@ -253,101 +196,152 @@ If optional argument SIGN is non-nil, do a combined sign and encrypt."
 				(list pgg-gpg-recipient-argument rcpt))
 			      (append recipients
 				      (if pgg-encrypt-for-me
-					  (list pgg-gpg-user-id))))))))
-	 (process (pgg-gpg-start-process args)))
-    (if (and sign (not pgg-gpg-use-agent))
-	(pgg-gpg-wait-for-status process '("BEGIN_SIGNING" "GOOD_PASSPHRASE")))
-    (process-send-region process start end)
-    (pgg-gpg-wait-for-completion process)
-    (save-excursion
-      (set-buffer (get-buffer-create pgg-errors-buffer))
-      (goto-char (point-max))
-      (not (null (re-search-backward "^\\[GNUPG:] END_ENCRYPTION\\>"
-				     nil t))))))
+					  (list pgg-gpg-user-id)))))))))
+    (pgg-gpg-process-region start end passphrase pgg-gpg-program args)
+    (when sign
+      (with-current-buffer pgg-errors-buffer
+	;; Possibly cache passphrase under, e.g. "jas", for future sign.
+	(pgg-gpg-possibly-cache-passphrase passphrase pgg-gpg-user-id)
+	;; Possibly cache passphrase under, e.g. B565716F, for future decrypt.
+	(pgg-gpg-possibly-cache-passphrase passphrase)))
+    (pgg-process-when-success)))
 
 (defun pgg-gpg-encrypt-symmetric-region (start end &optional passphrase)
-  "Encrypt the current region between START and END with symmetric cipher."
-  (let* ((args
-	  (append '("--armor" "--symmetric")
-		  (if pgg-text-mode '("--textmode"))))
-	 (process (pgg-gpg-start-process args)))
-    (pgg-gpg-wait-for-status process '("BEGIN_ENCRYPTION"))
-    (process-send-region process start end)
-    (pgg-gpg-wait-for-completion process)
-    (save-excursion
-      (set-buffer (get-buffer-create pgg-errors-buffer))
-      (goto-char (point-max))
-      (not (null (re-search-backward "^\\[GNUPG:] END_ENCRYPTION\\>"
-				     nil t))))))
+  "Encrypt the current region between START and END with symmetric cipher.
+
+If optional PASSPHRASE is not specified, it will be obtained from the
+passphrase cache or user."
+  (let* ((passphrase (or passphrase
+			 (pgg-read-passphrase
+			  "GnuPG passphrase for symmetric encryption: ")))
+	 (args
+	  (append (list "--batch" "--armor" "--symmetric" )
+		  (if pgg-text-mode (list "--textmode")))))
+    (pgg-gpg-process-region start end passphrase pgg-gpg-program args)
+    (pgg-process-when-success)))
 
 (defun pgg-gpg-decrypt-region (start end &optional passphrase)
-  "Decrypt the current region between START and END."
-  (let* ((args '("--decrypt"))
-	 (process (pgg-gpg-start-process args)))
-    (process-send-region process start end)
-    (pgg-gpg-wait-for-status process '("BEGIN_DECRYPTION"))
-    (pgg-gpg-wait-for-completion process)
-    (save-excursion
-      (set-buffer (get-buffer-create pgg-errors-buffer))
-      (goto-char (point-max))
-      (not (null (re-search-backward "^\\[GNUPG:] DECRYPTION_OKAY\\>"
-				     nil t))))))
+  "Decrypt the current region between START and END.
+
+If optional PASSPHRASE is not specified, it will be obtained from the
+passphrase cache or user."
+  (let* ((current-buffer (current-buffer))
+	 (message-keys (with-temp-buffer
+			 (insert-buffer-substring current-buffer)
+			 (pgg-decode-armor-region (point-min) (point-max))))
+	 (secret-keys (pgg-gpg-lookup-all-secret-keys))
+	 ;; XXX the user is stuck if they need to use the passphrase for
+	 ;;     any but the first secret key for which the message is
+	 ;;     encrypted.  ideally, we would incrementally give them a
+	 ;;     chance with subsequent keys each time they fail with one.
+	 (key (pgg-gpg-select-matching-key message-keys secret-keys))
+	 (key-owner (and key (pgg-gpg-lookup-key-owner key t)))
+	 (key-id (pgg-gpg-key-id-from-key-owner key-owner))
+	 (pgg-gpg-user-id (or key-id key
+			      pgg-gpg-user-id pgg-default-user-id))
+	 (passphrase (or passphrase
+			 (pgg-read-passphrase
+			  (format (if (pgg-gpg-symmetric-key-p message-keys)
+				      "Passphrase for symmetric decryption: "
+				    "GnuPG passphrase for %s: ")
+				  (or key-owner "??"))
+			  pgg-gpg-user-id)))
+	 (args '("--batch" "--decrypt")))
+    (pgg-gpg-process-region start end passphrase pgg-gpg-program args)
+    (with-current-buffer pgg-errors-buffer
+      (pgg-gpg-possibly-cache-passphrase passphrase pgg-gpg-user-id)
+      (goto-char (point-min))
+      (re-search-forward "^\\[GNUPG:] DECRYPTION_OKAY\\>" nil t))))
+
+;;;###autoload
+(defun pgg-gpg-symmetric-key-p (message-keys)
+  "True if decoded armor MESSAGE-KEYS has symmetric encryption indicator."
+  (let (result)
+    (dolist (key message-keys result)
+      (when (and (eq (car key) 3)
+		 (member '(symmetric-key-algorithm) key))
+	(setq result key)))))
+
+(defun pgg-gpg-select-matching-key (message-keys secret-keys)
+  "Choose a key from MESSAGE-KEYS that matches one of the keys in SECRET-KEYS."
+  (loop for message-key in message-keys
+	for message-key-id = (and (equal (car message-key) 1)
+				  (cdr (assq 'key-identifier
+					     (cdr message-key))))
+	for key = (and message-key-id (pgg-lookup-key message-key-id 'encrypt))
+	when (and key (member key secret-keys)) return key))
 
 (defun pgg-gpg-sign-region (start end &optional cleartext passphrase)
   "Make detached signature from text between START and END."
   (let* ((pgg-gpg-user-id (or pgg-gpg-user-id pgg-default-user-id))
+	 (passphrase (or passphrase
+			 (pgg-read-passphrase
+			  (format "GnuPG passphrase for %s: " pgg-gpg-user-id)
+			  pgg-gpg-user-id)))
 	 (args
 	  (append (list (if cleartext "--clearsign" "--detach-sign")
-			"--armor" "--verbose"
+			"--armor" "--batch" "--verbose"
 			"--local-user" pgg-gpg-user-id)
-		  (if pgg-text-mode '("--textmode"))))
-	 (process (pgg-gpg-start-process args)))
-    (unless pgg-gpg-use-agent
-      (pgg-gpg-wait-for-status process '("BEGIN_SIGNING" "GOOD_PASSPHRASE")))
-    (process-send-region process start end)
-    (pgg-gpg-wait-for-completion process)
-    (save-excursion
-      (set-buffer (get-buffer-create pgg-errors-buffer))
-      (goto-char (point-max))
-      (not (null (re-search-backward "^\\[GNUPG:] SIG_CREATED\\>"
-				     nil t))))))
+		  (if pgg-text-mode (list "--textmode"))))
+	 (inhibit-read-only t)
+	 buffer-read-only)
+    (pgg-gpg-process-region start end passphrase pgg-gpg-program args)
+    (with-current-buffer pgg-errors-buffer
+      ;; Possibly cache passphrase under, e.g. "jas", for future sign.
+      (pgg-gpg-possibly-cache-passphrase passphrase pgg-gpg-user-id)
+      ;; Possibly cache passphrase under, e.g. B565716F, for future decrypt.
+      (pgg-gpg-possibly-cache-passphrase passphrase))
+    (pgg-process-when-success)))
 
 (defun pgg-gpg-verify-region (start end &optional signature)
   "Verify region between START and END as the detached signature SIGNATURE."
-  (let ((args '("--verify"))
-	process)
+  (let ((args '("--batch" "--verify")))
     (when (stringp signature)
       (setq args (append args (list signature))))
-    (setq process (pgg-gpg-start-process (append args '("-"))))
-    (process-send-region process start end)
-    (pgg-gpg-wait-for-completion process)
-    (save-excursion
-      (set-buffer (get-buffer-create pgg-errors-buffer))
-      (goto-char (point-max))
-      (not (null (re-search-backward "^\\[GNUPG:] GOODSIG\\>"
-				     nil t))))))
+    (setq args (append args '("-")))
+    (pgg-gpg-process-region start end nil pgg-gpg-program args)
+    (with-current-buffer pgg-errors-buffer
+      (goto-char (point-min))
+      (while (re-search-forward "^gpg: \\(.*\\)\n" nil t)
+	(with-current-buffer pgg-output-buffer
+	  (insert-buffer-substring pgg-errors-buffer
+				   (match-beginning 1) (match-end 0)))
+	(delete-region (match-beginning 0) (match-end 0)))
+      (goto-char (point-min))
+      (re-search-forward "^\\[GNUPG:] GOODSIG\\>" nil t))))
 
 (defun pgg-gpg-insert-key ()
   "Insert public key at point."
   (let* ((pgg-gpg-user-id (or pgg-gpg-user-id pgg-default-user-id))
-	 (args (list "--export" "--armor"
-		     pgg-gpg-user-id))
-	 (process (pgg-gpg-start-process args)))
-    (pgg-gpg-wait-for-completion process)
+	 (args (list "--batch" "--export" "--armor"
+		     pgg-gpg-user-id)))
+    (pgg-gpg-process-region (point)(point) nil pgg-gpg-program args)
     (insert-buffer-substring pgg-output-buffer)))
 
 (defun pgg-gpg-snarf-keys-region (start end)
   "Add all public keys in region between START and END to the keyring."
-  (let* ((args '("--import" "-"))
-	 (process (pgg-gpg-start-process args))
-	 status)
-    (process-send-region process start end)
-    (pgg-gpg-wait-for-completion process)
-    (save-excursion
-      (set-buffer (get-buffer-create pgg-errors-buffer))
-      (goto-char (point-max))
-      (not (null (re-search-backward "^\\[GNUPG:] IMPORT_RES\\>"
-				     nil t))))))
+  (let ((args '("--import" "--batch" "-")) status)
+    (pgg-gpg-process-region start end nil pgg-gpg-program args)
+    (set-buffer pgg-errors-buffer)
+    (goto-char (point-min))
+    (when (re-search-forward "^\\[GNUPG:] IMPORT_RES\\>" nil t)
+      (setq status (buffer-substring (match-end 0)
+				     (progn (end-of-line)(point)))
+	    status (vconcat (mapcar #'string-to-number (split-string status))))
+      (erase-buffer)
+      (insert (format "Imported %d key(s).
+\tArmor contains %d key(s) [%d bad, %d old].\n"
+		      (+ (aref status 2)
+			 (aref status 10))
+		      (aref status 0)
+		      (aref status 1)
+		      (+ (aref status 4)
+			 (aref status 11)))
+	      (if (zerop (aref status 9))
+		  ""
+		"\tSecret keys are imported.\n")))
+    (append-to-buffer pgg-output-buffer (point-min)(point-max))
+    (pgg-process-when-success)))
 
 (provide 'pgg-gpg)