JavaScrypt: Source Distribution
Downloading and Installing
The JavaScrypt source distribution contains everything you
need to install JavaScrypt on your own computer. To install
a local copy of JavaScrypt which you can use even when not
connected to the Web, start by downloading the source
distribution archive.
This is a Zipped archive; copy it into the newly created
directory (folder) where you wish to install JavaScrypt,
then extract the contents with an
unzip utility.
Once the files are extracted you may then, if you wish, delete
the archive.
Running Your Local Copy of JavaScrypt
JavaScrypt works precisely the same whether installed on your
local computer or accessed over the Web. The only difference is
that you use a “file:” URL to direct
your browser to the local directory containing JavaScrypt rather
than an “http:” URL pointing to a
Web site. If you use a Unix (Linux, etc.) machine, and you've
installed JavaScrypt in a directory named, say,
“/home/boris/utils/JavaScrypt”, you'd
launch the JavaScrypt home page with the URL:
file:/home/boris/utils/JavaScrypt/index.html
A Windows user who had installed JavaScrypt in a directory named
“C:\natasha\myprogs\JavaScrypt” would use a
URL of:
file:/C:/natasha/myprogs/JavaScrypt/index.html
Note that when using a “file:” URL
you must specify the index.html home page file name: if
omitted, you'll see a directory listing, not the home page an
“http:” URL would default to.
From the home page, you can navigate to the other pages just as
if you were connected to the Web. You may wish to add bookmarks
to the local “file:” URL so you
don't have to type it in every time you wish to run JavaScrypt.
Contents of the Source Distribution
Files included in the source distribution are as follows.
Files with names in grey type
are development tools, test programs, documentation, and
other ancillaries which are not part of the user
JavaScrypt package.
- aes.js
- Advanced Encryption Standard (AES) implementation.
- aesprng.js
- Pseudorandom number generator based on AES
encryption.
- aesprng_test.html
- Page which permits testing aesprng.js by generating
pseudorandom sequences suitable for evaluation with
the
XD
and
ENT
programs.
- armour.js
- Utilities to “armour” binary data as various
forms of ASCII text, and to “disarm”
(decode) such text into the original binary.
- distribution.html
- This file.
- entropy.js
- Tools for “entropy collection“, which
monitor events (time and date, mouse motion, key
presses) etc. to create a difficult-to-guess seed for
pseudorandom sequence generation.
- example.html
- JavaScrypt tutorial.
- externalLinks.js
- Utility to specify target of external links in
XHTML 1.0 Strict documents.
- index.html
- JavaScrypt home page.
- javascrypt.css
- CSS style sheet for the JavaScrypt HTML files.
- javascrypt.html
- Encryption/Decryption page.
- jscrypt.html
- “Lean” version of the Encryption/Decryption
page. This version is created from
javascrypt.html by embedding all the external
JavaScript and CSS files it references, removing
explanatory text, and compressing the JavaScript code by
eliding comments and nonessential white space.
- jscrypt.js
- JavaScript functions used by the Encryption/Decryption
page.
- lecuyer.js
- Pseudorandom number generator based on L'Ecuyer's
modular algorithm with a Bays-Durham shuffle. Used
for non-security-related pseudorandom sequence generation.
- log.html
- Development log.
- md5.js
- JavaScript implementation of the MD5 message digest
algorithm.
- pass_phrase.html
- Pass Phrase Generator page.
- sha256.js
- JavaScript implementation of the SHA-224 and SHA-256
hashing algorithms.
- stegodict.js
- Dictionary for Steganography page (stego.html).
The dictionary is compressed by sorting words by length
and concatenating into strings of equal length with no
delimiters between words.
- stego.html
- Steganography page.
- utf-8.js
- Utilities for encoding and decoding
Unicode
strings in the
UTF-8
byte stream representation.
- wordtab.js
- Dictionary of words used by the Pass Phrase Generator
(pass_phrase.html). The dictionary is
compressed by sorting words by length and concatenating
into strings of equal length with no delimiters between
words. The dictionary differs from that in
stegodict.js in excluding words longer than 8
characters.
This document is in the public domain.
