.NET Tutorials, Forums, Interview Questions And Answers
Welcome :Guest
Sign In
Win Surprise Gifts!!!

Top 5 Contributors of the Month
Gaurav Pal
Post New Web Links

Encryptipn Decryption from a Java generated key

Posted By:      Posted Date: August 30, 2010    Points: 0   Category :ASP.Net
I have a Triple DES Key generated by java code from a third party vendor. It is a 3 part key. We need to use this key in our VB.NET application.  When I try to combine this key and use it in my app 'Dim desTransform As ICryptoTransform = desCrypto.CreateEncryptor(EncryptKey(Key), EncryptIV(IV))' gives me an error ' Specified key is not a valid size for this algorithm) I am new to cryptography and do not understand the algorithms well. How can I use the java generated key in our app for encrypt/decrypt.   Any help will be appreciated.  

View Complete Post

More Related Resource Links

change attrib value in java script in dynamically generated controls


Hi all,

i use the below code to dynamically generate two dropdowns and a text box in my MVC project.

countValidate is used to concatenate and produce controls with postfix 1 ,2,3 etc.

now i need to access the Criteria? series dropdown and check their values and according to the values received on changing the Criteria dropdown the value textbox must be disabled or enabled, in javascript.

<% countValidate = 1;

<% foreach (var item in Model.ContactSearchCriteria)
               { %>
            <table width="100%">
                    <td width="30%">
                        <%= Html.DropDownList("Field" + countValidate, ViewData["SRFLD" + countValidate] as SelectList, "Select", new { @class = "selectTr

C# reading Java/Php/SOAP service, WSDL generated file missing some namespace information

I'm trying to use a Web Service, which I believe is Java/php/SOAP, using C#.
I can connect and send fine, but the results, which are an array of information,
is null. The return is not instant, and I can get back errors.
I believe the problem is in the WSDL translation. The actual response coming back
does not line up with the WSDL generated code in reguards to namespaces. In
perticular, 'getCategoryTreeResponse' & 'getCategoryTreeResult' do not show up 
in the generated file.
I'm quite sure the WSDL file provided is poorly written but I have no control
over it. WSDL.exe only works when I pass a saved copy of the web service's
provided WSDL information due to the way it is called.

Compiler-generated scopes for local variable declarations

I was tasked with understanding and fixing a bug on error reporting with foreach iteration variables the other day, and it got me thinking about local variable scoping rules in C# in general. First, the bug.

C# / Java webservice


I am writting a client applicatin that acesses a webservice written by another company.  I need to test against this webservice but since it is live I need another place to test with.  I don't have access to the code from the webservice but have added a reference to my project.  I would like to create a test platform using C# which will run on IIS and not Java.

I have created a basic webserive using both the NetBeans platform and the VS/C# platform.  The problem I am having is if I dynamically change the web address from one to the other my client application complains that the webservice is invalid.  I have verified all the calls are the same.

Are there any setting with VS/C# that allow me to configure it to behave more like the Java webservice?  I don't have the server support to host the Java application for full testing along with other problems using the Java version.

I have run both services in the "WCF Test Client" and can see where the WCF service uses the varibles for request and the Java uses body/request but can't get the WCF to follow that format.  I read somewhere about changing the OperationContract with SoapRpcMethod but then the mentod is not longer exposed. I also tried a Web Service in .NET 3.5 instead of a WCF server but that seems to be more trouble and does not

Charset Problem with dynamically generated Word Document


in my asp.net web application i am dynamically generating a word documnet out of a sql data. I have set the char set UTF-8 during the doument creation in code but still when i open the generated document and check it char set .. it is always windows-1252 not the one that i have set. My sql data in the document have special characters whihc can only be understandable using the UTF-8 charset otherwise its always ?T written in place of an apostrophy . Pasting my code here..

         HttpContext.Current.Response.ContentType = "application/msword";
         HttpContext.Current.Response.ContentEncoding = System.Text.UnicodeEncoding.UTF8;
         HttpContext.Current.Response.Charset = "utf-8";
         string strFileName = "Details" + ".doc";
        HttpContext.Current.Response.AddHeader("Content-Disposition", "inline;filename=" + strFileName);
        StringBuilder strHTMLContent = new StringBuilder();
        string strMessage = " ";
        DataView abstractview = (DataView)dsAbstract.Select(DataSourceSelectArguments.Empty);
        foreach (DataRowView row1 in abstractview)
            strMessage += "<table border='1' cellspacing='0' cellpadding='5' width

{ End Bracket }: Microsoft Java Virtual Machine Update


In a settlement agreement reached in January 2001 to resolve a dispute over the Microsoft distribution of its Java implementation, Sun Microsystems and Microsoft agreed to limit the duration of the time Microsoft would use Sun's source code and compatibility test suites to support the Microsoft® Java Virtual Machine (MSJVM).

Brian Keller

MSDN Magazine October 2004

Generic interface Java to c#


hello guys, i have this interface in java and would like to know how to do the same thing in .net (c#)

public interface State<S extends State<?,?>, O extends Operator> {


Generated controls - skipping focus event - C# + JS


Ok, here is my senario.

A random (6-15) amount of textboxes are generated. Each textbox represents only one character. From those textboxes, three of them (at a random position) are enabled and the rest disabled.


When I put a character in any enabled textbox, it must put the focus on the next enabled textbox.


Textbox IDs go from 'char0' to 'char15' OR 'char0' to 'char12' OR ...

All the textboxes are generated so I can't set up specific focus events for each textbox because the designated control is unknown at design time.

Here is my attempt:


<script type="text/javascript">
    function abc(nextfocus)


for (int i = 0; i < focusableControls.Length-1; i++)
focusableControls[i].ClientSideEvents.KeyDown = "abc(" + focusableControls[i + 1].ID + ")";


focusableControls is an array with all the textboxes in that can get focus. It is also in the right order.

Things I want to find out:

How will I send the textbox out of focus

Errors when interacting with WorkFlow generated tasks through ISA Server


I have a MOSs environment that I have published through ISA Server 2006 and i am getting really strange behavior whentrying to interact with WorkLFow generated tasks when I have connected through ISA. This also seems to affect InfoPath Forms Services. I was wondering if anyone out there is seeing any problems when using ISA Server to interact wih Forms or WorkFlows?


The error I get simply states:

the form cannot be submitted to the web server either because your computer is offline or because the host server is currently unavailable.


Any help would be appreciated.





write a java script to show a msg wan to colse yes or no

 write a java script to show a msg wan to colse yes or no.if user select yes then another function is call then he select no then nothing happend

Encryption/Decryption OAEP

I have some code: string newKey = AmazonFeedBrowser.Security.CryptoKeyContainer.GetKeyFromContainer("KeyContainer", true); RSACryptoServiceProvider trsa = new RSACryptoServiceProvider(); trsa.FromXmlString(newKey); string tu = Convert.ToBase64String(trsa.Encrypt(Encoding.UTF8.GetBytes("Administrator"), true)); Debug.WriteLine(tu); newKey = AmazonFeedBrowser.Security.CryptoKeyContainer.GetKeyFromContainer("KeyContainer", false); trsa = new RSACryptoServiceProvider(); trsa.FromXmlString(newKey); Debug.WriteLine(Encoding.UTF8.GetString(trsa.Decrypt(Convert.FromBase64String(tu), true))); I get a cryptographic exception indicating that the OAEP padding cannot be processed. The RSACryptoServiceProvider (trsa) is initialized with just the public key. It seems to work OK with the public and private key. Is there a way to use OAEP with just the public key? Error occurred while decoding OAEP padding. System.Security.Cryptography.CryptographicException was unhandled Message=Error occurred while decoding OAEP padding. Source=mscorlib StackTrace: at System.Security.Cryptography.RSACryptoServiceProvider.DecryptKey(SafeKeyHandle pKeyContext, Byte[] pbEncryptedKey, Int32 cbEncryptedKey, Boolean fOAEP, ObjectHandleOnStack ohRetDecryptedKey) at System.Security.Cryptography.RSACryptoServiceProvider.Decrypt(Byte[] rgb, Boolean fOAEP) .

How could I deserialize a object which is serialized in JAVA??

When I try to do it with the code below. FileStream fileStream = new FileStream( "C:\\apps\\user.tmp", FileMode.Open, FileAccess.Read, FileShare.Read);     BinaryFormatter bf=new BinaryFormatter();     pd = (PianoData)bf.Deserialize(fileStream);     System.Console.WriteLine();     fileStream.Close(); Exception occurred as I had excepted. "The input stream is not a valid binary format."   I wonder if I can do it by another way

ssrs 2008 R2 - report parameter with no default set throws java script error

We have recently upgraded from SQL Server 2008 to SQL Server 2008 R2....I am experiencing a problem with my report parameters on my SSRS reports. It seems that my report parameters that I do not have a specified 'default' value throws a java script error when I try and run/render the report under R2.  As soon as I put a 'default' value on the report param, everything is fine.  However, that is not the behavior we need for our reports...the user needs to pick their selection. Can anyone shed some light on this, it seems to be an AJAX problem...I need to be able to have report parameters with a list of values, but no 'default' value on the parameter.

Java Hibernate and OLAP(SSAS)

I am trying to create hibernate connection using olap4j driver I am getting this error- java.lang.IllegalAccessException: Class org.eclipse.datatools.connectivity.drivers.jdbc.JDBCConnection can not access a member of class org.olap4j.driver.xmla.XmlaOlap4jDriver with modifiers "protected"     at sun.reflect.Reflection.ensureMemberAccess(Reflection.java:65)     at java.lang.Class.newInstance0(Class.java:349)     at java.lang.Class.newInstance(Class.java:308)     at org.eclipse.datatools.connectivity.drivers.jdbc.JDBCConnection.createConnection(JDBCConnection.java:205)     at org.eclipse.datatools.connectivity.DriverConnectionBase.internalCreateConnection(DriverConnectionBase.java:104)     at org.eclipse.datatools.connectivity.DriverConnectionBase.open(DriverConnectionBase.java:53)     at org.eclipse.datatools.connectivity.drivers.jdbc.JDBCConnection.open(JDBCConnection.java:72)     at org.eclipse.datatools.connectivity.drivers.jdbc.JDBCConnectionFactory.createConnection(JDBCConnectionFactory.java:53)     at org.eclipse.datatools.connectivity.internal.ConnectionFactoryProvider.createConnection(ConnectionFactoryProvider.java:83)     at org.eclipse.datatools.connectivity.internal.ConnectionProfile.createConnection(Connectio

Selecting the correct auto-generated ID associated with a given customer

I have the following two tables (among many) in an OLTP database: TABLE NAME: BusinessEntity TABLE FIELDS: BusinessEntityID, int, IDENTITY(1,1), NOT NULL, PRIMARY KEY BusinessEntityType, nvarchar(10), NULL TABLE NAME: Person TABLE FIELDS: BusinessEntityID, int, NOT NULL, PRIMARY KEY, FOREIGN KEY to BusinessEntity.BusinessEntityID FirstName, nvarchar(30), NULL LastName, nvarchar(30), NULL There is a 1-to-1 Identifying Relationship between the BusinessEntity and Person tables. When a new customer needs to be added to the database, I execute the following T-SQL statement: INSERT INTO BusinessEntity (BusinessEntityType) VALUES (‘Customer’); What I don’t know how to do is retrieve the value of BusinessEntity.BusinessEntityID that was automatically assigned to the new customer so I can then append it to Person.BusinessEntityID. While I know I can execute: SELECT MAX (BusinessEntityID) FROM BusinessEntity; there is no guarantee that the BusinessEntityID will be the one associated with the new customer I just added because it is possible that other new customers can be added to the BusinessEntity table by other users during the interim period between the time I execute the previously mentioned INSERT command and then SELECT command. Any help/guidance in resolving this issue would be greatly appreciated.  Thanks.

SQL Server JDBC: java.lang.SecurityException: Invalid signature file digest?

Hi I am following these instructions for using SQL Server JDBC driver and using sqljdbc4.jar file: http://msdn.microsoft.com/en-us/library/ms378526.aspx When registering the driver to instruct JDBC Driver Manager which driver to load: Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver"); It throws and exception: java.lang.SecurityException: Invalid signature file digest for Manifest main attributes What does this mean and how do I resolve it? NOTE: I followed a similar posting, but it did not resolve it: com.microsoft.sqlserver.jdbc.SQLServerException.class throws java.lang.SecurityException: http://social.msdn.microsoft.com/Forums/en-US/sqldataaccess/thread/ab35688e-ca33-423e-a9bd-54e30fcb5091/ Thanks Jeff in Seattle
ASP.NetWindows Application  .NET Framework  C#  VB.Net  ADO.Net  
Sql Server  SharePoint  Silverlight  Others  All   

Hall of Fame    Twitter   Terms of Service    Privacy Policy    Contact Us    Archives   Tell A Friend