JScript.Encode is a method created by

Microsoft Microsoft Corporation is an American multinational corporation and technology company, technology conglomerate headquartered in Redmond, Washington. Founded in 1975, the company became influential in the History of personal computers#The ear ...

used to

obfuscate Obfuscation is the wikt:obscure#Verb, obscuring of the intended meaning (linguistics), meaning of communication by making the message difficult to understand, usually with mental confusion, confusing and ambiguity, ambiguous language. The obfusca ...

both server and Client-side JavaScript or VB Script source code in order to protect the

source code In computing, source code, or simply code or source, is a plain text computer program written in a programming language. A programmer writes the human readable source code to control the behavior of a computer. Since a computer, at base, only ...

from

copying Copying is the duplication of information or an wiktionary:artifact, artifact based on an instance of that information or artifact, and not using the process that originally generated it. With Analog device, analog forms of information, copying is ...

. JavaScript code is used for creating dynamic web content on many websites, with the source code easily viewable, so this was meant to protect the code. The encoding is a simple polyalphabetic substitution using three alphabets.

How to use

command line A command-line interface (CLI) is a means of interacting with software via command (computing), commands each formatted as a line of text. Command-line interfaces emerged in the mid-1960s, on computer terminals, as an interactive and more user ...

script encoder can be used to encode scripts. To encode a

HTML Hypertext Markup Language (HTML) is the standard markup language for documents designed to be displayed in a web browser. It defines the content and structure of web content. It is often assisted by technologies such as Cascading Style Sheets ( ...

web-page file called , use the following command:

screnc.exe default.htm defaultenc.htm

It would output to a file called .

Weaknesses

It has been

reverse engineered Reverse engineering (also known as backwards engineering or back engineering) is a process or method through which one attempts to understand through deductive reasoning how a previously made device, process, system, or piece of software accompl ...

and many websites provide an on-the-fly decoder.

References

External links

Windows Script Decoder
Internet Explorer {{windows-stub