From fc88d7d05eb22b1486a2b476793bc46c221f56b2 Mon Sep 17 00:00:00 2001 From: yamaoka Date: Thu, 2 Sep 2004 01:33:24 +0000 Subject: [PATCH] *** empty log message *** --- lisp/sha1.el | 441 ---------------------------------------------------------- 1 file changed, 441 deletions(-) delete mode 100644 lisp/sha1.el diff --git a/lisp/sha1.el b/lisp/sha1.el deleted file mode 100644 index c71a135..0000000 --- a/lisp/sha1.el +++ /dev/null @@ -1,441 +0,0 @@ -;;; 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 -- 1.7.10.4