Merge from emacs--rel--22
[bpt/emacs.git] / lisp / net / sasl-cram.el
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1;;; sasl-cram.el --- CRAM-MD5 module for the SASL client framework
2
dcb8ac09 3;; Copyright (C) 2000, 2007, 2008 Free Software Foundation, Inc.
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4
5;; Author: Daiki Ueno <ueno@unixuser.org>
6;; Kenichi OKADA <okada@opaopa.org>
7;; Keywords: SASL, CRAM-MD5
8
9;; This file is part of GNU Emacs.
10
11;; GNU Emacs 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 3, or (at your option)
14;; any later version.
15
16;; GNU Emacs 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.
20
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.
25
26;;; Commentary:
27
28(require 'sasl)
29(require 'hmac-md5)
30
31(defconst sasl-cram-md5-steps
32 '(ignore ;no initial response
33 sasl-cram-md5-response))
34
35(defun sasl-cram-md5-response (client step)
36 (let ((passphrase
37 (sasl-read-passphrase
38 (format "CRAM-MD5 passphrase for %s: "
39 (sasl-client-name client)))))
40 (unwind-protect
41 (concat (sasl-client-name client) " "
42 (encode-hex-string
43 (hmac-md5 (sasl-step-data step) passphrase)))
44 (fillarray passphrase 0))))
45
46(put 'sasl-cram 'sasl-mechanism
47 (sasl-make-mechanism "CRAM-MD5" sasl-cram-md5-steps))
48
49(provide 'sasl-cram)
50
cbee283d 51;; arch-tag: 46cb281b-975a-4fe0-a39f-3018691b1b05
369fc5a6 52;;; sasl-cram.el ends here