JavaScript Obfuscators Review
|
|
|
| 5.0/5.0 (4 votes total) |
|
|
|
ajaxpath.com December 21, 2006
|
Obfuscated code is source code that is (usually intentionally) very
hard to read and understand. Macro preprocessors are often used to
create hard to read code by masking the standard language syntax and
grammar from the main body of code.
Programs, known as obfuscators, operate on source code, object code,
or both, for the purpose of deterring reverse engineering. I tried to
find and collect under one roof information about Javascript source
code protection tools, also known as javascript obfuscators. Thicket™ Obfuscator for JavaScript The JavaScript Obfuscator (or ECMAScript, its official name,
Obfuscator) tool obfuscates JavaScript source code to make it difficult
to understand or reverse engineer. This provides significant protection
for source code intellectual property that must be shipped to a
customer, as is common when shipping JavaScript-enabled web pages to
browsers or when JavaScript is used as a scripting language to support
other activities (XSLT, etc.). It can also provide effective
compression of JavaScript files to reduce script download time. http://www.semdesigns.com/Products/Obfuscators/ECMAScriptObfuscator.html Jasob 2 With Jasob your JavaScript code will become impossible to understand
thus preventing anyone to steal and modify it. Its size will typically
shrink for around 70% which will significantly improve download time
and execution speed in the Web browser. How Jasob achieves this? Jasob
reads files with JavaScript code and replaces descriptive variable and
function names like Customer, Salary, FirstName... with meaningless
names like d, g, m... It also removes comments and unnecessary
whitespace characters (space, tab, carriage return, line feed). The
functionality of the code remains the same while source code changes
dramatically. This process is called obfuscation, and the tool is
called obfuscator. Obfuscated code is impossible to reverse-engineer
and extremely hard or impossible to understand. It is better to
distribute obfuscated version of your JavaScript code and to keep your
original JavaScript source code for yourself. http://www.jasob.com/ Javascript Obfuscator Scramble, obfuscate, and pack JavaScript code!
Javascript Obfuscator converts the JavaScript source code into
scrambled and completely unreadable form, preventing it from analysing
and theft. Javascript Obfuscator can
* process javascript tags in html files and all .js files associated
with html pages as well as separate .js files
* remove comments and white spaces, reducing the file size and
minimizing the loading time
* pack the code as a long line
* add finishing ";" when appropriate
* create a list of function and variable names
* generate new non-understandable names and rename functions and
variables depending on user settings
* work with command line. http://www.javascript-source.com/ Stunnix JavaScript Obfuscator Stunnix JavaScript Obfuscator is an unique solution for this piracy and
misuse problem for code written in ECMAScript or JavaScript programming
languages - it's both obfuscation and encoding tool for JavaScript
source code in .js files and in HTML, PHP, ASP and JSP pages, with
advanced support for adding extremely difficult to remove automatic
checks of licensing conditions. Stunnix JavaScript Obfuscator converts
scripts in input files into highly mangled and obfuscated form, making
them extermely difficult to study, analyse, reuse and re-work for
competitors or customers, while fully retaining functionality of the
original code. By default that highly mangled and obfuscated code is
encoded afterwards to hide the structure (control flow, division into
subroutines and classes) of the script completely. Stunnix JavaScript
Obfuscator is not a compiler to machine or pseudo code - the protected
form will still be the usual script, thus it will work on all platforms
the original code worked on. State of the art support for ensuring
license conditions (expiration, several types of hostname checks,
user-defined checks) is also available. http://www.stunnix.com/prod/jo/overview.shtml?g2 JCE Pro JCE Pro is a professional tool for obfuscation of javascript, making
the javascript code difficult to understand and hard to reverse
engineer.
Protecting your intellectual capital
Webapplication and components that has been developed for month. How
much is that work worth? How much money has not been spent on
development?
Yet it is very common that no effort is made in protecting that
investment. That means competitors is able to read and analyze the code
like a open book, maybe they "borrow" some nice parts of the
application or component.
With JCE Pro it very easy to stop your competitors from doing that, and
to a price that everyone can afford. http://www.syntropy.se/?ct=products/jcepro&target=overview JavaScript Obfuscator by Tool Galaxy The tool "JavaScript Obfuscator" obfuscates the JavaScript source code,
thus making it unreadable by humans.
Webmasters can place "JavaScript Obfuscator" for free on their
websites, thus enriching their overall content and appealing more and
more new visitors. http://tool-galaxy.remiya.com/html/10.html Scripts Encryptor (ScrEnc) Scripts Encryptor is a handy utility to scramble (obfuscate) HTML,
JavaScript/JScript, C/C++/MFC code. Unlike many other obfuscators it
does not employ JavaScript for encoding, which significantly increases
the number of web browsers that will be able to open scrambled
documents without distortion. Use this software to protect your online
content from unauthorized copying, reverse engineering and from webbots
collecting email addresses and other personal data. http://www.dennisbabkin.com/php/download.php?what=ScrEnc Shane Ng's GPL-licenced obfuscator You input your Javascript into this program, and it will make it
completely incomprehensible. Function and variable names are changed,
spaces and line breaks removed, strings made into mixed hexadecimal and
Unicode "garbage" etc. This can be used to protect your intellectual
property -- but remember that the script still works, and can be copied
verbatim to another web site. The code is 500 something lines of Java,
and compiles with 1.4 compilers. It is simple to use -- just run the
program and it will tell you how it works. http://shaneng.awardspace.com/ Dean Edwards JavaScript Compressor/Obfuscator Simple online JavaScript obfuscator. http://dean.edwards.name/packer/ ESC ESC is an ECMAScript pre-processor written in JScript, enabling an
unlimited number of external scripts to be compressed/crunched into
supertight, bandwidth-optimized packages. Featuring several
compression-techniques such as comment removal, whitespace stripping,
newline stripping and variable substitution ESC can reduce the overall
size of your code with up to ~45%. Single, multiple scripts and even
directories with scripts can be merged together at the compression
level you decide. http://www.saltstorm.net/depo/esc/ Jammer This program will allow you to
* Obfuscate your HTML, Javascripts and VRML source code on your
webpages from the browsers' VIEW SOURCE Window (then the potential
thief will not be able to cut and paste your script) o Put extra Space
at the top of file o Remove comments o Shrink all the code on one line
o Remove ident space and any space that can be cut * Make C / C++
sources very hard to read (usefull when you're distribuating a program
with C sources for unix )
* It also compress the files size up to 50%.
* Clean imported PC text files for UNIX or Amiga with extra ^M
* File types supported : *.htm ; *.asp ; *.wrl ; *.c ; *.java ; *.pov ;
*.txt. http://rzr.online.fr/docs/shop/jammer.htm JSCruncher Pro The easiest, most powerful way to compress, obfuscate and manage your
JavaScript files. JSCruncher Pro reduces file sizes an average of 60%
in the blink of an eye! http://domapi.com/jscruncherpro/ Strong JS It is a shrinker/obfuscator for JavaScripts. You can use it to easily
and quickly reduce the size of typical JavaScript files by 50% on
average depending on the style the code is written in. Strong JS allows
you to delete all unnecessary bytes in scripts, such as comments, new
line characters and unnecessary spaces. The execution of the js file
won't change after it is compressed. It just executes like before. You
won't see a difference, only the file size will be smaller. Also, it
can rename variables giving them short names. http://www.stronghtml.com/tools/js/ JavaScript Scrambler JavaScript Scrambler is a utility for all JavaScript programmers who
are fed up with the fact, that their source code can be stolen and
simply modified. It will scramble any JavaScript source code until it
is almost impossible to comprehend for others. http://www.quadhead.de/jss.html Javascript Encoder from scriptasylum.com This script will encode javascript to make it more difficult for people to read and/or steal. Find directions on website. http://scriptasylum.com/tutorials/encdec/javascript_encoder.html |