;;; sha1.el --- SHA1 Secure Hash Algorithm in Emacs-Lisp
-;; Copyright (C) 1999, 2001, 2003, 2004 Free Software Foundation, Inc.
+;; Copyright (C) 1999, 2001-2016 Free Software Foundation, Inc.
;; Author: Shuhei KOBAYASHI <shuhei@aqua.ocn.ne.jp>
;; Keywords: SHA1, FIPS 180-1
-;; This file is part of FLIM (Faithful Library about Internet Message).
+;; This file is part of GNU Emacs.
-;; 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
+;; GNU Emacs 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 3 of the License, or
;; (at your option) any later version.
-;; This program is distributed in the hope that it will be useful,
+;; GNU Emacs 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.
+;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
(defgroup sha1 nil
"Elisp interface for SHA1 hash computation."
+ :version "22.1"
:group 'extensions)
(defcustom sha1-maximum-internal-length 500
- "*Maximum length of message to use Lisp version of SHA1 function.
+ "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.
:group 'sha1)
(defcustom sha1-program '("sha1sum")
- "*Name of program to compute SHA1.
+ "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.
+ "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)
+ (let ((default-directory "/") ;; in case otherwise non-existent
+ (process-connection-type nil) ;; pipe
+ prog args digest)
(if (consp sha1-program)
(setq prog (car sha1-program)
args (cdr sha1-program))
(setq prog sha1-program
args nil))
(with-temp-buffer
+ (unless (featurep 'xemacs) (set-buffer-multibyte nil))
(insert string)
(apply (function call-process-region)
- (point-min)(point-max)
+ (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))))
(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.
+ ;; 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))))))
+ `(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.
+ `(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))))))
+ `(logior (logand ,B ,C)
+ (logand ,D (logior ,B ,C))))
(defmacro sha1-F3 (B C D)
- (` (logxor (, B) (, C) (, D))))
+ `(logxor ,B ,C ,D))
(defmacro sha1-S1 (W-high W-low)
- (` (let ((W-high (, W-high))
- (W-low (, 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))))))
+ (/ 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))))))
+ `(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))))))))
+ `(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)))))
+ `(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)))))
+ `(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).
If BINARY is non-nil, return a string in binary form."
(if (stringp object)
(sha1-string object binary)
- (save-excursion
- (set-buffer object)
+ (with-current-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
projects / gnus / blobdiff