From: yamaoka Date: Wed, 1 Sep 2004 22:19:01 +0000 (+0000) Subject: Synch to No Gnus 200409012019. X-Git-Tag: t-gnus-6_17_4-quimby-~783 X-Git-Url: http://git.chise.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=43a54399d0331cfd35e34ab000960db436835900;p=elisp%2Fgnus.git- Synch to No Gnus 200409012019. --- diff --git a/lisp/ChangeLog b/lisp/ChangeLog index b830375..4010499 100644 --- a/lisp/ChangeLog +++ b/lisp/ChangeLog @@ -1,3 +1,18 @@ +2004-09-01 Simon Josefsson + + * message.el (message-canlock-generate): Require sha1, not + sha1-el. (Can we get rid of this require alltogheter? It is ugly + to require within a function. Sadly, if sha1.el isn't loaded, the + let binding in m-c-g will hide the defcustom definition, which is + bad.) + + * canlock.el: Require sha1, not sha1-el. + + * message.el: Don't autoload sha1 (there is a autoload cookie in + sha1.el). + + * sha1-el.el: Renamed to sha1.el. + 2004-08-30 Juanma Barranquero * ietf-drums.el (ietf-drums-remove-whitespace): Fix character constant. diff --git a/lisp/canlock.el b/lisp/canlock.el index 9e437e7..cb88eed 100644 --- a/lisp/canlock.el +++ b/lisp/canlock.el @@ -44,15 +44,7 @@ (eval-when-compile (require 'cl)) -(eval-and-compile - (require 'sha1-el) - (condition-case nil - (sha1 "" nil nil 'binary) - (wrong-number-of-arguments - (let ((mel (locate-library "mel"))) - (when mel - (load (expand-file-name "sha1-el" (file-name-directory mel)) - nil t)))))) +(require 'sha1) (defvar mail-header-separator) diff --git a/lisp/message.el b/lisp/message.el index 06e3f19..6759e4e 100644 --- a/lisp/message.el +++ b/lisp/message.el @@ -1766,9 +1766,6 @@ no, only reply back to the author." (autoload 'rmail-msg-restore-non-pruned-header "rmail") (autoload 'rmail-output "rmailout")) -(eval-when-compile - (autoload 'sha1 "sha1-el")) - ;;; @@ -4463,7 +4460,7 @@ manual for details." (defun message-canlock-generate () "Return a string that is non-trivial to guess. Do not use this for anything important, it is cryptographically weak." - (require 'sha1-el) + (require 'sha1) (let (sha1-maximum-internal-length) (sha1 (concat (message-unique-id) (format "%x%x%x" (random) (random t) (random)) diff --git a/lisp/sha1.el b/lisp/sha1.el new file mode 100644 index 0000000..c71a135 --- /dev/null +++ b/lisp/sha1.el @@ -0,0 +1,441 @@ +;;; sha1.el --- SHA1 Secure Hash Algorithm in Emacs-Lisp + +;; Copyright (C) 1999, 2001, 2003, 2004 Free Software Foundation, Inc. + +;; Author: Shuhei KOBAYASHI +;; Keywords: SHA1, FIPS 180-1 + +;; This file is part of FLIM (Faithful Library about Internet Message). + +;; This program 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 2, or +;; (at your option) any later version. + +;; This program 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 this program; see the file COPYING. If not, write to +;; the Free Software Foundation, Inc., 59 Temple Place - Suite 330, +;; Boston, MA 02111-1307, USA. + +;;; Commentary: + +;; This program is implemented from the definition of SHA-1 in FIPS PUB +;; 180-1 (Federal Information Processing Standards Publication 180-1), +;; "Announcing the Standard for SECURE HASH STANDARD". +;; +;; (EXCEPTION; two optimizations taken from GnuPG/cipher/sha1.c) +;; +;; Test cases from FIPS PUB 180-1. +;; +;; (sha1 "abc") +;; => a9993e364706816aba3e25717850c26c9cd0d89d +;; +;; (sha1 "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq") +;; => 84983e441c3bd26ebaae4aa1f95129e5e54670f1 +;; +;; (sha1 (make-string 1000000 ?a)) +;; => 34aa973cd4c4daa4f61eeb2bdbad27316534016f +;; +;; BUGS: +;; * It is assumed that length of input string is less than 2^29 bytes. +;; * It is caller's responsibility to make string (or region) unibyte. +;; +;; TODO: +;; * Rewrite from scratch! +;; This version is much faster than Keiichi Suzuki's another sha1.el, +;; but it is too dirty. + +;;; Code: + +(require 'hex-util) + +;;; +;;; external SHA1 function. +;;; + +(defgroup sha1 nil + "Elisp interface for SHA1 hash computation." + :group 'extensions) + +(defcustom sha1-maximum-internal-length 500 + "*Maximum length of message to use Lisp version of SHA1 function. +If message is longer than this, `sha1-program' is used instead. + +If this variable is set to 0, use external program only. +If this variable is set to nil, use internal function only." + :type 'integer + :group 'sha1) + +(defcustom sha1-program '("sha1sum") + "*Name of program to compute SHA1. +It must be a string \(program name\) or list of strings \(name and its args\)." + :type '(repeat string) + :group 'sha1) + +(defcustom sha1-use-external (condition-case () + (executable-find (car sha1-program)) + (error)) + "*Use external SHA1 program. +If this variable is set to nil, use internal function only." + :type 'boolean + :group 'sha1) + +(defun sha1-string-external (string &optional binary) + (let (prog args digest default-enable-multibyte-characters) + (if (consp sha1-program) + (setq prog (car sha1-program) + args (cdr sha1-program)) + (setq prog sha1-program + args nil)) + (with-temp-buffer + (insert string) + (apply (function call-process-region) + (point-min)(point-max) + prog t t nil args) + ;; SHA1 is 40 bytes long in hexadecimal form. + (setq digest (buffer-substring (point-min)(+ (point-min) 40)))) + (if binary + (decode-hex-string digest) + digest))) + +(defun sha1-region-external (beg end &optional binary) + (sha1-string-external (buffer-substring-no-properties beg end) binary)) + +;;; +;;; internal SHA1 function. +;;; + +(eval-when-compile + ;; optional second arg of string-to-number is new in v20. + (defconst sha1-K0-high 23170) ; (string-to-number "5A82" 16) + (defconst sha1-K0-low 31129) ; (string-to-number "7999" 16) + (defconst sha1-K1-high 28377) ; (string-to-number "6ED9" 16) + (defconst sha1-K1-low 60321) ; (string-to-number "EBA1" 16) + (defconst sha1-K2-high 36635) ; (string-to-number "8F1B" 16) + (defconst sha1-K2-low 48348) ; (string-to-number "BCDC" 16) + (defconst sha1-K3-high 51810) ; (string-to-number "CA62" 16) + (defconst sha1-K3-low 49622) ; (string-to-number "C1D6" 16) + +;;; original definition of sha1-F0. +;;; (defmacro sha1-F0 (B C D) +;;; (` (logior (logand (, B) (, C)) +;;; (logand (lognot (, B)) (, D))))) +;;; a little optimization from GnuPG/cipher/sha1.c. + (defmacro sha1-F0 (B C D) + (` (logxor (, D) (logand (, B) (logxor (, C) (, D)))))) + (defmacro sha1-F1 (B C D) + (` (logxor (, B) (, C) (, D)))) +;;; original definition of sha1-F2. +;;; (defmacro sha1-F2 (B C D) +;;; (` (logior (logand (, B) (, C)) +;;; (logand (, B) (, D)) +;;; (logand (, C) (, D))))) +;;; a little optimization from GnuPG/cipher/sha1.c. + (defmacro sha1-F2 (B C D) + (` (logior (logand (, B) (, C)) + (logand (, D) (logior (, B) (, C)))))) + (defmacro sha1-F3 (B C D) + (` (logxor (, B) (, C) (, D)))) + + (defmacro sha1-S1 (W-high W-low) + (` (let ((W-high (, W-high)) + (W-low (, W-low))) + (setq S1W-high (+ (% (* W-high 2) 65536) + (/ W-low (, (/ 65536 2))))) + (setq S1W-low (+ (/ W-high (, (/ 65536 2))) + (% (* W-low 2) 65536)))))) + (defmacro sha1-S5 (A-high A-low) + (` (progn + (setq S5A-high (+ (% (* (, A-high) 32) 65536) + (/ (, A-low) (, (/ 65536 32))))) + (setq S5A-low (+ (/ (, A-high) (, (/ 65536 32))) + (% (* (, A-low) 32) 65536)))))) + (defmacro sha1-S30 (B-high B-low) + (` (progn + (setq S30B-high (+ (/ (, B-high) 4) + (* (% (, B-low) 4) (, (/ 65536 4))))) + (setq S30B-low (+ (/ (, B-low) 4) + (* (% (, B-high) 4) (, (/ 65536 4)))))))) + + (defmacro sha1-OP (round) + (` (progn + (sha1-S5 sha1-A-high sha1-A-low) + (sha1-S30 sha1-B-high sha1-B-low) + (setq sha1-A-low (+ ((, (intern (format "sha1-F%d" round))) + sha1-B-low sha1-C-low sha1-D-low) + sha1-E-low + (, (symbol-value + (intern (format "sha1-K%d-low" round)))) + (aref block-low idx) + (progn + (setq sha1-E-low sha1-D-low) + (setq sha1-D-low sha1-C-low) + (setq sha1-C-low S30B-low) + (setq sha1-B-low sha1-A-low) + S5A-low))) + (setq carry (/ sha1-A-low 65536)) + (setq sha1-A-low (% sha1-A-low 65536)) + (setq sha1-A-high (% (+ ((, (intern (format "sha1-F%d" round))) + sha1-B-high sha1-C-high sha1-D-high) + sha1-E-high + (, (symbol-value + (intern (format "sha1-K%d-high" round)))) + (aref block-high idx) + (progn + (setq sha1-E-high sha1-D-high) + (setq sha1-D-high sha1-C-high) + (setq sha1-C-high S30B-high) + (setq sha1-B-high sha1-A-high) + S5A-high) + carry) + 65536))))) + + (defmacro sha1-add-to-H (H X) + (` (progn + (setq (, (intern (format "sha1-%s-low" H))) + (+ (, (intern (format "sha1-%s-low" H))) + (, (intern (format "sha1-%s-low" X))))) + (setq carry (/ (, (intern (format "sha1-%s-low" H))) 65536)) + (setq (, (intern (format "sha1-%s-low" H))) + (% (, (intern (format "sha1-%s-low" H))) 65536)) + (setq (, (intern (format "sha1-%s-high" H))) + (% (+ (, (intern (format "sha1-%s-high" H))) + (, (intern (format "sha1-%s-high" X))) + carry) + 65536))))) + ) + +;;; buffers (H0 H1 H2 H3 H4). +(defvar sha1-H0-high) +(defvar sha1-H0-low) +(defvar sha1-H1-high) +(defvar sha1-H1-low) +(defvar sha1-H2-high) +(defvar sha1-H2-low) +(defvar sha1-H3-high) +(defvar sha1-H3-low) +(defvar sha1-H4-high) +(defvar sha1-H4-low) + +(defun sha1-block (block-high block-low) + (let (;; step (c) --- initialize buffers (A B C D E). + (sha1-A-high sha1-H0-high) (sha1-A-low sha1-H0-low) + (sha1-B-high sha1-H1-high) (sha1-B-low sha1-H1-low) + (sha1-C-high sha1-H2-high) (sha1-C-low sha1-H2-low) + (sha1-D-high sha1-H3-high) (sha1-D-low sha1-H3-low) + (sha1-E-high sha1-H4-high) (sha1-E-low sha1-H4-low) + (idx 16)) + ;; step (b). + (let (;; temporary variables used in sha1-S1 macro. + S1W-high S1W-low) + (while (< idx 80) + (sha1-S1 (logxor (aref block-high (- idx 3)) + (aref block-high (- idx 8)) + (aref block-high (- idx 14)) + (aref block-high (- idx 16))) + (logxor (aref block-low (- idx 3)) + (aref block-low (- idx 8)) + (aref block-low (- idx 14)) + (aref block-low (- idx 16)))) + (aset block-high idx S1W-high) + (aset block-low idx S1W-low) + (setq idx (1+ idx)))) + ;; step (d). + (setq idx 0) + (let (;; temporary variables used in sha1-OP macro. + S5A-high S5A-low S30B-high S30B-low carry) + (while (< idx 20) (sha1-OP 0) (setq idx (1+ idx))) + (while (< idx 40) (sha1-OP 1) (setq idx (1+ idx))) + (while (< idx 60) (sha1-OP 2) (setq idx (1+ idx))) + (while (< idx 80) (sha1-OP 3) (setq idx (1+ idx)))) + ;; step (e). + (let (;; temporary variables used in sha1-add-to-H macro. + carry) + (sha1-add-to-H H0 A) + (sha1-add-to-H H1 B) + (sha1-add-to-H H2 C) + (sha1-add-to-H H3 D) + (sha1-add-to-H H4 E)))) + +(defun sha1-binary (string) + "Return the SHA1 of STRING in binary form." + (let (;; prepare buffers for a block. byte-length of block is 64. + ;; input block is split into two vectors. + ;; + ;; input block: 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F ... + ;; block-high: +-0-+ +-1-+ +-2-+ +-3-+ + ;; block-low: +-0-+ +-1-+ +-2-+ +-3-+ + ;; + ;; length of each vector is 80, and elements of each vector are + ;; 16bit integers. elements 0x10-0x4F of each vector are + ;; assigned later in `sha1-block'. + (block-high (eval-when-compile (make-vector 80 nil))) + (block-low (eval-when-compile (make-vector 80 nil)))) + (unwind-protect + (let* (;; byte-length of input string. + (len (length string)) + (lim (* (/ len 64) 64)) + (rem (% len 4)) + (idx 0)(pos 0)) + ;; initialize buffers (H0 H1 H2 H3 H4). + (setq sha1-H0-high 26437 ; (string-to-number "6745" 16) + sha1-H0-low 8961 ; (string-to-number "2301" 16) + sha1-H1-high 61389 ; (string-to-number "EFCD" 16) + sha1-H1-low 43913 ; (string-to-number "AB89" 16) + sha1-H2-high 39098 ; (string-to-number "98BA" 16) + sha1-H2-low 56574 ; (string-to-number "DCFE" 16) + sha1-H3-high 4146 ; (string-to-number "1032" 16) + sha1-H3-low 21622 ; (string-to-number "5476" 16) + sha1-H4-high 50130 ; (string-to-number "C3D2" 16) + sha1-H4-low 57840) ; (string-to-number "E1F0" 16) + ;; loop for each 64 bytes block. + (while (< pos lim) + ;; step (a). + (setq idx 0) + (while (< idx 16) + (aset block-high idx (+ (* (aref string pos) 256) + (aref string (1+ pos)))) + (setq pos (+ pos 2)) + (aset block-low idx (+ (* (aref string pos) 256) + (aref string (1+ pos)))) + (setq pos (+ pos 2)) + (setq idx (1+ idx))) + (sha1-block block-high block-low)) + ;; last block. + (if (prog1 + (< (- len lim) 56) + (setq lim (- len rem)) + (setq idx 0) + (while (< pos lim) + (aset block-high idx (+ (* (aref string pos) 256) + (aref string (1+ pos)))) + (setq pos (+ pos 2)) + (aset block-low idx (+ (* (aref string pos) 256) + (aref string (1+ pos)))) + (setq pos (+ pos 2)) + (setq idx (1+ idx))) + ;; this is the last (at most) 32bit word. + (cond + ((= rem 3) + (aset block-high idx (+ (* (aref string pos) 256) + (aref string (1+ pos)))) + (setq pos (+ pos 2)) + (aset block-low idx (+ (* (aref string pos) 256) + 128))) + ((= rem 2) + (aset block-high idx (+ (* (aref string pos) 256) + (aref string (1+ pos)))) + (aset block-low idx 32768)) + ((= rem 1) + (aset block-high idx (+ (* (aref string pos) 256) + 128)) + (aset block-low idx 0)) + (t ;; (= rem 0) + (aset block-high idx 32768) + (aset block-low idx 0))) + (setq idx (1+ idx)) + (while (< idx 16) + (aset block-high idx 0) + (aset block-low idx 0) + (setq idx (1+ idx)))) + ;; last block has enough room to write the length of string. + (progn + ;; write bit length of string to last 4 bytes of the block. + (aset block-low 15 (* (% len 8192) 8)) + (setq len (/ len 8192)) + (aset block-high 15 (% len 65536)) + ;; XXX: It is not practical to compute SHA1 of + ;; such a huge message on emacs. + ;; (setq len (/ len 65536)) ; for 64bit emacs. + ;; (aset block-low 14 (% len 65536)) + ;; (aset block-high 14 (/ len 65536)) + (sha1-block block-high block-low)) + ;; need one more block. + (sha1-block block-high block-low) + (fillarray block-high 0) + (fillarray block-low 0) + ;; write bit length of string to last 4 bytes of the block. + (aset block-low 15 (* (% len 8192) 8)) + (setq len (/ len 8192)) + (aset block-high 15 (% len 65536)) + ;; XXX: It is not practical to compute SHA1 of + ;; such a huge message on emacs. + ;; (setq len (/ len 65536)) ; for 64bit emacs. + ;; (aset block-low 14 (% len 65536)) + ;; (aset block-high 14 (/ len 65536)) + (sha1-block block-high block-low)) + ;; make output string (in binary form). + (let ((result (make-string 20 0))) + (aset result 0 (/ sha1-H0-high 256)) + (aset result 1 (% sha1-H0-high 256)) + (aset result 2 (/ sha1-H0-low 256)) + (aset result 3 (% sha1-H0-low 256)) + (aset result 4 (/ sha1-H1-high 256)) + (aset result 5 (% sha1-H1-high 256)) + (aset result 6 (/ sha1-H1-low 256)) + (aset result 7 (% sha1-H1-low 256)) + (aset result 8 (/ sha1-H2-high 256)) + (aset result 9 (% sha1-H2-high 256)) + (aset result 10 (/ sha1-H2-low 256)) + (aset result 11 (% sha1-H2-low 256)) + (aset result 12 (/ sha1-H3-high 256)) + (aset result 13 (% sha1-H3-high 256)) + (aset result 14 (/ sha1-H3-low 256)) + (aset result 15 (% sha1-H3-low 256)) + (aset result 16 (/ sha1-H4-high 256)) + (aset result 17 (% sha1-H4-high 256)) + (aset result 18 (/ sha1-H4-low 256)) + (aset result 19 (% sha1-H4-low 256)) + result)) + ;; do not leave a copy of input string. + (fillarray block-high nil) + (fillarray block-low nil)))) + +(defun sha1-string-internal (string &optional binary) + (if binary + (sha1-binary string) + (encode-hex-string (sha1-binary string)))) + +(defun sha1-region-internal (beg end &optional binary) + (sha1-string-internal (buffer-substring-no-properties beg end) binary)) + +;;; +;;; application interface. +;;; + +(defun sha1-region (beg end &optional binary) + (if (and sha1-use-external + sha1-maximum-internal-length + (> (abs (- end beg)) sha1-maximum-internal-length)) + (sha1-region-external beg end binary) + (sha1-region-internal beg end binary))) + +(defun sha1-string (string &optional binary) + (if (and sha1-use-external + sha1-maximum-internal-length + (> (length string) sha1-maximum-internal-length)) + (sha1-string-external string binary) + (sha1-string-internal string binary))) + +;;;###autoload +(defun sha1 (object &optional beg end binary) + "Return the SHA1 (Secure Hash Algorithm) of an object. +OBJECT is either a string or a buffer. +Optional arguments BEG and END denote buffer positions for computing the +hash of a portion of OBJECT. +If BINARY is non-nil, return a string in binary form." + (if (stringp object) + (sha1-string object binary) + (save-excursion + (set-buffer object) + (sha1-region (or beg (point-min)) (or end (point-max)) binary)))) + +(provide 'sha1) + +;;; arch-tag: c0f9abd0-ffc1-4557-aac6-ece7f2d4c901 +;;; sha1.el ends here