Fix up comment convention on the arch-tag lines.
[bpt/emacs.git] / lisp / net / hmac-md5.el
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1;;; hmac-md5.el --- Compute HMAC-MD5.
2
dcb8ac09 3;; Copyright (C) 1999, 2001, 2007, 2008 Free Software Foundation, Inc.
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4
5;; Author: Shuhei KOBAYASHI <shuhei@aqua.ocn.ne.jp>
6;; Keywords: HMAC, RFC 2104, HMAC-MD5, MD5, KEYED-MD5, CRAM-MD5
7
8;; This file is part of GNU Emacs.
9
10;; GNU Emacs is free software; you can redistribute it and/or modify
11;; it under the terms of the GNU General Public License as published by
12;; the Free Software Foundation; either version 3, or (at your option)
13;; any later version.
14
15;; GNU Emacs 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.
19
20;; You should have received a copy of the GNU General Public License
21;; along with GNU Emacs; see the file COPYING. If not, write to the
22;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
23;; Boston, MA 02110-1301, USA.
24
25;;; Commentary:
26
27;; Test cases from RFC 2202, "Test Cases for HMAC-MD5 and HMAC-SHA-1".
28;;
29;; (encode-hex-string (hmac-md5 "Hi There" (make-string 16 ?\x0b)))
30;; => "9294727a3638bb1c13f48ef8158bfc9d"
31;;
32;; (encode-hex-string (hmac-md5 "what do ya want for nothing?" "Jefe"))
33;; => "750c783e6ab0b503eaa86e310a5db738"
34;;
35;; (encode-hex-string (hmac-md5 (make-string 50 ?\xdd) (make-string 16 ?\xaa)))
36;; => "56be34521d144c88dbb8c733f0e8b3f6"
37;;
38;; (encode-hex-string
39;; (hmac-md5
40;; (make-string 50 ?\xcd)
41;; (decode-hex-string "0102030405060708090a0b0c0d0e0f10111213141516171819")))
42;; => "697eaf0aca3a3aea3a75164746ffaa79"
43;;
44;; (encode-hex-string
45;; (hmac-md5 "Test With Truncation" (make-string 16 ?\x0c)))
46;; => "56461ef2342edc00f9bab995690efd4c"
47;;
48;; (encode-hex-string
49;; (hmac-md5-96 "Test With Truncation" (make-string 16 ?\x0c)))
50;; => "56461ef2342edc00f9bab995"
51;;
52;; (encode-hex-string
53;; (hmac-md5
54;; "Test Using Larger Than Block-Size Key - Hash Key First"
55;; (make-string 80 ?\xaa)))
56;; => "6b1ab7fe4bd7bf8f0b62e6ce61b9d0cd"
57;;
58;; (encode-hex-string
59;; (hmac-md5
60;; "Test Using Larger Than Block-Size Key and Larger Than One Block-Size Data"
61;; (make-string 80 ?\xaa)))
62;; => "6f630fad67cda0ee1fb1f562db3aa53e"
63
64;;; Code:
65
66(eval-when-compile (require 'hmac-def))
67(require 'hex-util) ; (decode-hex-string STRING)
68(require 'md5) ; expects (md5 STRING)
69
70(defun md5-binary (string)
71 "Return the MD5 of STRING in binary form."
72 (if (condition-case nil
73 ;; `md5' of v21 takes 4th arg CODING (and 5th arg NOERROR).
74 (md5 "" nil nil 'binary) ; => "d41d8cd98f00b204e9800998ecf8427e"
75 (wrong-number-of-arguments nil))
76 (decode-hex-string (md5 string nil nil 'binary))
77 (decode-hex-string (md5 string))))
78
79(define-hmac-function hmac-md5 md5-binary 64 16) ; => (hmac-md5 TEXT KEY)
80(define-hmac-function hmac-md5-96 md5-binary 64 16 96)
81
82(provide 'hmac-md5)
83
cbee283d 84;; arch-tag: 0ab3f4f6-3d4b-4167-a9fa-635b7fed7f27
0cd1fac2 85;;; hmac-md5.el ends here