"GnuPG interface"
:group 'pgg)
-(defcustom pgg-gpg-program "gpg"
+(defcustom pgg-gpg-program "gpg"
"The GnuPG executable."
:group 'pgg-gpg
:type 'string)
(unwind-protect
(progn
(set-default-file-modes 448)
- (let ((coding-system-for-write 'binary)
+ (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-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)
(set-buffer errors-buffer)
(if (not (equal exit-status 0))
(insert (format "\n%s exited abnormally: '%s'\n"
- program exit-status)))))
+ program exit-status)))))
(if (file-exists-p output-file-name)
(delete-file output-file-name))
(set-default-file-modes orig-mode))))
(substring (match-string 0) -8))))
passphrase)))
+(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
+ (nth 3 (split-string
+ (buffer-substring (match-end 0)
+ (progn (end-of-line) (point)))
+ ":")) 8)
+ pgg-gpg-all-secret-keys)))))
+ pgg-gpg-all-secret-keys)
+
(defun pgg-gpg-lookup-key (string &optional type)
"Search keys associated with STRING."
(let ((args (list "--with-colons" "--no-greeting" "--batch"
(defun pgg-gpg-decrypt-region (start end)
"Decrypt the current region between START and END."
- (let* ((pgg-gpg-user-id (or pgg-gpg-user-id pgg-default-user-id))
+ (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))
+ (key (pgg-gpg-select-matching-key message-keys secret-keys))
+ (pgg-gpg-user-id (or key pgg-gpg-user-id pgg-default-user-id))
(passphrase
(pgg-read-passphrase
(format "GnuPG passphrase for %s: " pgg-gpg-user-id)
(goto-char (point-min))
(re-search-forward "^\\[GNUPG:] DECRYPTION_OKAY\\>" nil t))))
+(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 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)
"Make detached signature from text between START and END."
(let* ((pgg-gpg-user-id (or pgg-gpg-user-id pgg-default-user-id))