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  • [Java] RSA BadPaddingException : data must start with zero

    - by Robin Monjo
    Hello everyone. I try to implement an RSA algorithm in a Java program. I am facing the "BadPaddingException : data must start with zero". Here are the methods used to encrypt and decrypt my data : public byte[] encrypt(byte[] input) throws Exception { Cipher cipher = Cipher.getInstance("RSA/ECB/PKCS1Padding");// cipher.init(Cipher.ENCRYPT_MODE, this.publicKey); return cipher.doFinal(input); } public byte[] decrypt(byte[] input) throws Exception { Cipher cipher = Cipher.getInstance("RSA/ECB/PKCS1Padding");/// cipher.init(Cipher.DECRYPT_MODE, this.privateKey); return cipher.doFinal(input); } privateKey and publicKey attributes are read from files this way : public PrivateKey readPrivKeyFromFile(String keyFileName) throws IOException { PrivateKey key = null; try { FileInputStream fin = new FileInputStream(keyFileName); ObjectInputStream ois = new ObjectInputStream(fin); BigInteger m = (BigInteger) ois.readObject(); BigInteger e = (BigInteger) ois.readObject(); RSAPrivateKeySpec keySpec = new RSAPrivateKeySpec(m, e); KeyFactory fact = KeyFactory.getInstance("RSA"); key = fact.generatePrivate(keySpec); ois.close(); } catch (Exception e) { e.printStackTrace(); } return key; } Private key and Public key are created this way : public void Initialize() throws Exception { KeyPairGenerator keygen = KeyPairGenerator.getInstance("RSA"); keygen.initialize(2048); keyPair = keygen.generateKeyPair(); KeyFactory fact = KeyFactory.getInstance("RSA"); RSAPublicKeySpec pub = fact.getKeySpec(keyPair.getPublic(), RSAPublicKeySpec.class); RSAPrivateKeySpec priv = fact.getKeySpec(keyPair.getPrivate(), RSAPrivateKeySpec.class); saveToFile("public.key", pub.getModulus(), pub.getPublicExponent()); saveToFile("private.key", priv.getModulus(), priv.getPrivateExponent()); } and then saved in files : public void saveToFile(String fileName, BigInteger mod, BigInteger exp) throws IOException { FileOutputStream f = new FileOutputStream(fileName); ObjectOutputStream oos = new ObjectOutputStream(f); oos.writeObject(mod); oos.writeObject(exp); oos.close(); } I can't figured out how the problem come from. Any help would be appreciate ! Thanks in advance.

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  • Can we run MVC 2.0 on .Net 2.0

    - by Vinni
    Hello guys, I have an asp.net website which is already developed in .net 3.5, Now I asked to develop few pages in MVC 2.0 and few pages in DynamicData. Now Can I Run the MVC 2.0 and Dynamic Data in 3.5. When I run this i am getting lot of errors in web.config..

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  • Javascript data store solution using PhoneGap

    - by nickcartwright
    Hiya, Does anyone have any experience of storing data in JavaScript across all mobile platforms using PhoneGap? My ideal solution would be to use something like SQLite, but unfortunately SQLite isn't supported across all the platforms PhoneGap supports. I tried to ask this question a little while ago, but it got quite a few negative marks. If you think this is a bad / pointless question I would love to know as it will hopefully help me to understand the problem! Cheers, Nick.

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  • Data Formatters temporarily unavailable

    - by Zac Altman
    Im trying to use Date Formatters (UIDateFormatter), but I keep getting this error: Program received signal: “EXC_BAD_ACCESS”. Data Formatters temporarily unavailable, will re-try after a 'continue'. (Unknown error loading shared library "/Developer/usr/lib/libXcodeDebuggerSupport.dylib")

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  • Recover Data Entered in MSSql 2008 to MSSql 2005

    - by Nirmal
    Hello... I have created a set of tables (around 20) in MSSql 2008 and entered around 1000 records to appropriate tables. But the issue is that I want that same tables with all the entered data into MSSql 2005 (SQLEXPRESS). Obviously it won't work by taking a backup and restore it into MSSql 2005 as it won't support backward compatibility. Any suggestion would be appreciated.... Thanks in advance....

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  • Exporting data from a YUI DataTable

    - by Bears will eat you
    What's the easiest/fastest way to grab data out of a YUI DataTable and turn it into a single CSV or TSV string? I basically just want to implement a one-click way to get the entire DataTable (it should preserve the currently-applied sorting) into a form that users can paste into a spreadsheet. My DataTable can get pretty big - 5000 to 10000 rows, 5 to 10 columns - so efficiency does matter.

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  • Data type mismatch when retrieving records from an access database using a DateTimePicker

    - by Daniel
    I get a Data type mismatch criteria expression error when i try to retrieve records from an access database between two dates using a DateTimePicker in C#. This is the Select statement else if (dtpDOBFrom.Value < dtpDOBTo.Value) { cmdSearch.CommandText = "SELECT [First Name], [Surname], [Contact Type], [Birthdate] FROM [Contacts] WHERE [Birthdate] >= '" + dtpDOBFrom.Value +"' AND [Birthdate] <= '" + dtpDOBTo.Value +"'"; }

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  • Retrieve sequence of data from different columns.

    - by janetsmith
    Let's say I have a table containing following data: | id | t0 | t1 | t2 | | 1 | 4 | 5 | 6 | | 2 | 3 | 3 | 2 | | 3 | 6 | 4 | 5 | | 4 | 4 | 5 | 5 | I want to retrieve all the rows containing 4, 5, 6 (regardless the position of numbers in the tables), so row 1 & row 3 will be selected. How to do that with SQL query?

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  • ItemsControl ItemsTemplate vs ContentTemplate

    - by Allen Ho
    Hi, Is there any difference between setting the ContentTemplate of a ListBoxItem, compared to setting the ItemsTemplate on the ListBox? Or is it just a preference? Just say you set the ItemsTemplate of the ListBox can you still get the Data Template you assigned to the ListBox ItemsTemplate via the ListBoxItems ContentTemplate? ie. Like below ListBoxItem myListBoxItem = ...; ContentPresenter myContentPresenter = FindVisualChild(myListBoxItem); DataTemplate myDataTemplate = myContentPresenter.ContentTemplate;

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  • SSIS how to split a single record in to two different records?

    - by Dr. Zim
    I have a Product record that has multiple "zoned" prices, one for each store that sells the product. ProductID int Name string PriceA money PriceB money PriceC money In SQL Server Integration Services, I need to split this in to multiple records: ProductID int Version string // A, B, or C Price money // PriceA if A, PriceB if B, etc. This would be within a Data Flow, I presume as a Transformation between Excel source and OLE DB destination. (Assuming OLE DB is a good destination for MS SQL server).

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  • Capturing IR Data using VB.NET

    - by E-Q
    Just found an old IR reciever (Microsoft eHome Infared Transceiver) and i'm trying to write an application that can use data it captures... Any examples or jumping off points for this are appreciated. Thanks!

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  • Web Part Error: This page has exceeded its data fetch limit for connected Web Parts

    - by user348515
    Hi Experts, I have a display form with two custom list forms and both are connected to each other and they display the results according to the filter. But when ever I sort on any field, it gives the following error: Web Part Error: This page has exceeded its data fetch limit for connected Web Parts. Try disconnecting one or more Web Parts to correct the problem. I appreciate any help. Thanks SP

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