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emacs/lisp/net/sasl-cram.el
2008-01-09 04:31:51 +00:00

53 lines
1.6 KiB
EmacsLisp

;;; sasl-cram.el --- CRAM-MD5 module for the SASL client framework
;; Copyright (C) 2000, 2007, 2008 Free Software Foundation, Inc.
;; Author: Daiki Ueno <ueno@unixuser.org>
;; Kenichi OKADA <okada@opaopa.org>
;; Keywords: SASL, CRAM-MD5
;; This file is part of GNU Emacs.
;; GNU Emacs is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation; either version 3, or (at your option)
;; any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs; see the file COPYING. If not, write to the
;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
;; Boston, MA 02110-1301, USA.
;;; Commentary:
(require 'sasl)
(require 'hmac-md5)
(defconst sasl-cram-md5-steps
'(ignore ;no initial response
sasl-cram-md5-response))
(defun sasl-cram-md5-response (client step)
(let ((passphrase
(sasl-read-passphrase
(format "CRAM-MD5 passphrase for %s: "
(sasl-client-name client)))))
(unwind-protect
(concat (sasl-client-name client) " "
(encode-hex-string
(hmac-md5 (sasl-step-data step) passphrase)))
(fillarray passphrase 0))))
(put 'sasl-cram 'sasl-mechanism
(sasl-make-mechanism "CRAM-MD5" sasl-cram-md5-steps))
(provide 'sasl-cram)
;;; arch-tag: 46cb281b-975a-4fe0-a39f-3018691b1b05
;;; sasl-cram.el ends here