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首页 > 加密解密 > Jasob
Jasob
产品编号:XK06433
如何获得此产品的“本地化服务”
出 版 商: Jasob 版  本: 3
语  言: 英语 授权期限: 1年
上架时间: 2008/12/17 更新时间: 2008/12/17
交货方式: 电子授权 配货周期: 15个工作日
   
市场价格: 1990 RMB (以销售人员正式报价为准)
  数字星空软件产品价格有何不同?   进口价计算
中文简介 English 该厂商所有产品  

Jasob为一款对网页JAVA脚本源程序进行加密的软件,它能在不影响你网站功能的前提下使源程晦涩难懂。

JavaScript is scripting programming language used in millions of Web pages worldwide. Scripting languages are not compiled, so JavaScript source code has to be downloaded together with the Web page in order to be run by the Web browser. This has several drawbacks and the most important one is that JavaScript source code can be easily viewed by anyone. All it takes is to open the Web page in the Web browser and to choose option View Source. This means that anyone can steal your JavaScript code, modify it and reuse it for his own purposes.

 

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 white space 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. Jasob also hadles Cascading Style Sheet (CSS) code in a similar fashion as JavaScript code and also removes white space characters and comments from non-JavaScript/CSS code (like from HTML code). Along with other features, this makes Jasob a complete solution for Web content optimization. It is better to distribute obfuscated version of your Web content and to keep your original source code for yourself.

 

The following is the example of the JavaScript source code:

//------------------------------------------------------
// Calculate salary for each employee in "aEmployees".
// "aEmployees" is array of "Employee" objects.
//------------------------------------------------------
function CalculateSalary(aEmployees)
{
var nEmpIndex = 0;
while (nEmpIndex < aEmployees.length)
{
var oEmployee = aEmployees[nEmpIndex];
oEmployee.fSalary = CalculateBaseSalary(oEmployee.nType,
oEmployee.nWorkingHours);
if (oEmployee.bBonusAllowed == true)
{
oEmployee.fBonus = CalculateBonusSalary(oEmployee.nType,
oEmployee.nWorkingHours,
oEmployee.fSalary);
}
else
{
oEmployee.fBonus = 0;
}
oEmployee.sSalaryColor = GetSalaryColor(oEmployee.fSalary +
oEmployee.fBonus);
nEmpIndex++;
}
}


And the following is the obfuscated version of the same JavaScript code:


function c(g){var m=0;while(m<g.length){var r=g[m];r.l=d(r.n,r.o);if(r.j==true){
r.k=e(r.n,r.o,r.l);}else{r.k=0;}r.t=f(r.l+r.k);m++;}}


As you can see, the obfuscated JavaScript code is extremely hard or impossible to understand. Also, its size is much smaller which allows for better download time and faster execution in the Web browser.

Jasob has great features that will make JavaScript and CSS obfuscation a nice experience.

There are many sources where JavaScript and CSS code could be found. Jasob is capable of reading JavaScript/CSS code from the following file types:
JavaScript Files (.js)
HTML Files (.htm, .html)
XHTML Files (.xht, .xhtm, .xhtml)
Server Side Includes Files (.shtm, .shtml)
ASP Files (.asp)
ASP.NET Files (.aspx, .ascx)
ATL Server Files (.srf)
PHP Files (.php, .php3, .php4, .php5)
JSP Files (.jsp, .jspf)
JSP Document Files (.jspx)
XML Files (.xml, .xsd)
XSLT Files (.xsl, .xslt)
Cold Fusion Files (.cfm)
ePerl Files (.iphtml)
CSS Files (.css)
Plus, you can define your own file types or edit existing file types. You can also customize settings for each individual opened file.

 

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