Original VS2017 C # running Javasrcipt RSA encrypted user name login to Java Development Server

The first time I wrote a blog.

Recently want to do a Web automatic login, the user name and password is RSA encrypted, the background is used in Java, I will only point C #, grab the package everything is done (using the fiddler), but because of C # and RSA Encryption way, I did n days, are uncertain, in the middle asked a lot of people, The people who are willing to help are not many, maybe I am too vegetable. Just to get a certified cookie, I used the WebBrowser control, let the person log in, and then get a cookie, but the feeling is a semi-finished.

However, C # and Java in the middle of the RSA, I encountered 2 problems, the Internet is public key to public key, unfortunately, I only exponent,modulus, to use these 2 to generate a new public key, learned C programmer, Look at the Java code how much to understand some, I saw a lot of Java code generated public key, a lot of conversion, the last generation of RSA encrypted data, always system access failed. I am smattering to RSA, and many ToBase64, from Base64, Tohex, Fromhex,btye[], I went to see the next code, unfortunately, the foundation is too poor, are smattering. I followed, the online code, back and forth, in the generation, but unfortunately still the system access failed.

I just thought, what is encryption, as long as they encode the conversion sequence and steps in the middle, and I am not the same, I went into a dead end. I try to read through JavaScript to generate ciphertext files, but still the foundation is too poor, there are some algorithms, and BigInt type, very complex, I think I can read, But someone changed some code, and the work was wasted. The best way is to run the Javasrcipt file that he provided to generate the ciphertext.

I started looking for C # to run JavaScript, there are 2 classes, one is the use of outdated Sciptcontrol, 2010 years ago technology, and 64 support is not good, are pits ah. There is another way to run a third-party class library. I use VS2017 NuGet The input Javascript found the javascript.net, that's it.

But the online learning material is very few, and login his official website, are Chinese, I this primary school English, is a bit unbearable ah, do not understand English, we Baidu, Google Translate, find the entry, enter the document, look at the code. (http://javascriptdotnet.codeplex.com/documentation)

  classProgram { Public classSystemconsole { PublicSystemconsole () {} Public voidPrint (stringistring)            {Console.WriteLine (istring); }        }        Static voidMain (string[] args) {            //Initialize the context            using(Javascriptcontext context =NewJavascriptcontext ()) {                //Setting The externals parameters of the contextContext. Setparameter ("Console",Newsystemconsole ()); Context. Setparameter ("message","Hello World!"); Context. Setparameter (" Number",1); //Running the scriptContext. Run ("var i; for (i = 0; i < 5; i++) Console. Print (Message + ' (' + i + ') '); number + = i;"); //Getting a parameterConsole.WriteLine ("Number :"+ context. GetParameter (" Number")); }        }    }

is not so powerful that you can interact with C # objects.

But I want to use a file, not a string ah. Continue to look at the code, but the code is very small, read the question inside, find the code. There's A.

Static voidMain (string[] args) {      stringScript ="function Test (A, b) {return a+b;} test (' abc ', ' Def ');"; Try {         using(Javascriptcontext context =NewJavascriptcontext ()) {          stringresult = (string) context. Run (script,"Test");        Console.WriteLine (result); }      } Catch(Exception ex) {Console.WriteLine (ex).        Message); Console.WriteLine (ex.      StackTrace); }    }

This can call the method. Great, change it. Find a half-day find, do not support directly call the file. Change it.

stringScript = File.readalltext (appdomain.currentdomain.basedirectory+@".. \.. \js\base64.js"); Script+ = File.readalltext (AppDomain.CurrentDomain.BaseDirectory +@".. \.. \js\security.js"); Script+ = File.readalltext (AppDomain.CurrentDomain.BaseDirectory +@".. \.. \js\base.js"); Try            {                using(Javascriptcontext context =NewJavascriptcontext ()) {                    //Exponent,modulus,password,usercodeContext. Setparameter ("Console",Newsystemconsole ()); Context. Setparameter ("exponent","10001"); Context. Setparameter ("modulus","89ded116f36bf4e6108f549379f0137661a432e64fa80ae13cf1d0bb9fc957d16ee69a44383e3e4d0195e58f700ee7b4b00fa08f73a0cf6fcb517 E3a772a1d2cfc96d2aa4d1df8b1c3a09f7c4ad4c3e29d427b6f96269d3d15db9da9d63fd2fface9299d63f4f17c1fc2565efcbe64b84e2a029f0a60a8 89106c3287f6a0be07"); Context. Setparameter ("Password","Coky"); Context. Setparameter ("Usercode","1234"); Context. Setparameter ("Usercodersa",""); //context. Setparameter ("window", null);Context. Run (script,"Test"); Console.WriteLine ("Usercodersa:"+ context. GetParameter ("Usercodersa")); Console.WriteLine ("Passwordrsa:"+ context. GetParameter ("Passwordrsa")); }            }            Catch(Exception ex) {Console.WriteLine (ex).                Message); Console.WriteLine (ex.            StackTrace); } console.read ();

Here is the JavaScript file, which I wrote myself, the other 2 files

Base64.js

Security.js
I used strings to concatenate them together. But I think in the front, should be the least dependent, on the JavaScript specific syntax is not very understanding, but I think this insurance.

varUsercodersavarPasswordrsaconsole.print ("Base Start");functionTest (exponent,modulus,password,usercode) {Console. Print ("Exponent:" +exponent); Console. Print ("Modulus:" +modulus); Console. Print ("Password:" +password); Console. Print ("Usercode:" +Usercode); Console. Print ("=============================================================="); Rsautils.setmaxdigits (200); varKey =NewRsautils.getkeypair (Exponent, ", modulus); Console. Print ("Key:" +key); Console. Print ("=============================================================="); varB64 =base64encode (password); Console. Print ("Password Base64Encode:" +b64); Console. Print ("=============================================================="); varReversedpwd = B64.split (""). Reverse (). Join (""); Console. Print ("Password Base64Encode reverse:" +reversedpwd); Console. Print ("=============================================================="); Passwordrsa=rsautils.encryptedstring (key, reversedpwd); Console. Print ("Password Rsaencry:" +Passwordrsa); Console. Print ("=============================================================="); B64=Base64Encode (Usercode); Console. Print ("Usercode Base64Encode:" +b64); Console. Print ("=============================================================="); Reversedpwd= B64.split (""). Reverse (). Join (""); Console. Print ("Usercode Base64Encode Reverse:" +reversedpwd); Console. Print ("=============================================================="); Usercodersa=rsautils.encryptedstring (key, reversedpwd); Console. Print ("Usercode rsaencry:" +Usercodersa); Console. Print ("==============================================================");} Test (Exponent,modulus,password,usercode);

Run a bit.

It's done. First write, write very general. There is no understanding, welcome message or qq:2786771252

Original VS2017 C # running Javasrcipt RSA encrypted user name login to Java Development Server