1 ;;; sha1-java.el --- SHA1 Secure Hash Algorithm using Java.
3 ;; Copyright (C) 2000 Daiki Ueno
5 ;; Author: Daiki Ueno <ueno@unixuser.org>
6 ;; Keywords: SHA1, FIPS 180-1
8 ;; This file is part of FLIM (Faithful Library about Internet Message).
10 ;; This program is free software; you can redistribute it and/or
11 ;; modify it under the terms of the GNU General Public License as
12 ;; published by the Free Software Foundation; either version 2, or
13 ;; (at your option) any later version.
15 ;; This program is distributed in the hope that it will be useful,
16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 ;; GNU General Public License for more details.
20 ;; You should have received a copy of the GNU General Public License
21 ;; along with this program; see the file COPYING. If not, write to
22 ;; the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
23 ;; Boston, MA 02111-1307, USA.
29 (defvar sha1-java-message-digest
30 (let ((class (java-find-class "java.security.MessageDigest")))
31 (java-call-static-method class "getInstance" "SHA")))
33 (defun sha1-java-update (bytes)
34 "Update the current SHA1 state with BYTES (an string of uni-bytes)."
35 (let ((bytes (mapvector #'char-to-int bytes)))
36 (java-call-virtual-method sha1-java-message-digest "update" bytes)))
38 (defun sha1-java-encode (message &optional binary)
39 "Encodes MESSAGE using the SHA1 message digest algorithm.
40 MESSAGE must be a unibyte-string.
41 By default, return a string which formed hex-decimal charcters
43 If optional argument BINARY is non-nil, then return binary formed
44 string of message digest."
45 (sha1-java-update message)
49 (char-to-string (logand byte #xff))
50 (format "%02x" (logand byte #xff))))
51 (java-call-virtual-method sha1-java-message-digest "digest") ""))
55 ;;; sha1-java.el ends here