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1 | ;;; hmac-md5.el --- Compute HMAC-MD5. |
2 | ||
dcb8ac09 | 3 | ;; Copyright (C) 1999, 2001, 2007, 2008 Free Software Foundation, Inc. |
0cd1fac2 GM |
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 |