signature

This is what I want to do: Generate a 512 bit RSA keypair in Java/Android Generate a SHA1withRSA signature for some message in Java Send message, signature and public key to PHP (for testing this will be done at the same time) Verify the message in PHP using phpseclib What I got so far: On the Java side: String msg = "Test message"; // generate keypair KeyPairGenerator keyGen = KeyPairGenerator.getInstance("RSA"); keyGen.initialize(512); KeyPair keyPair = keyGen.generateKeyPair(); // generate signature Signature signature = Signature.getInstance("SHA1withRSA"); signature.initSign(keyPair

I have encountered a blocker with the .NET Framework version 4.5 to do with signing of XML with digital signatures. My problem is based around the need to sign individual XML elements with X.509 certificate with the RSA SHA-256 algorithm. I have read many .NET posts on this topic and it appears that there is a solution originally developed in the CLR Security project RSAPKCS1SHA256SignatureDescription.cs class. RSAPKCS1SHA256SignatureDescription has of course since been incorporated into the .net runtime and as of .NET 4.5 is now available under the distributed binary System.Deployment.dll. I

I'm using Eclipse to develop an app and I have two computers (a desktop and laptop) that I want to use to develop this app. I recently set up my laptop with Eclipse and imported the project over to that computer. However, I realized that I can't launch the application from my laptop onto my phone because the signature that is automatically generated when I build the app from my desktop doesn't match the one that is automatically generated on the laptop; unless I uninstall it on the phone. Does anyone know how to export the automatically generated signature from one Eclipse and import it into

I have tested a solution to verify an ECDSA signature ( How can I get a PublicKey object from EC public key bytes? ) that works perfect with the given data. This is the data: byte[] pubKey = DatatypeConverter.parseHexBinary("049a55ad1e210cd113457ccd3465b930c9e7ade5e760ef64b63142dad43a308ed08e2d85632e8ff0322d3c7fda14409eafdc4c5b8ee0882fe885c92e3789c36a7a"); byte[] message = DatatypeConverter.parseHexBinary("54686973206973206a75737420736f6d6520706f696e746c6573732064756d6d7920737472696e672e205468616e6b7320616e7977617920666f722074616b696e67207468652074696d6520746f206465636f6465206974203b2d29");

We have signed our product installation using SignTool.exe and GoDaddy certificate, and our signature appears valid in windows and using "verify" option of SignTool. However, when the file is downloaded in Internet Explorer 9, it reports that "The signature of is corrupt or invalid". We obviously don't want our users to have problems with installation of our setup, so I need help in fixing it. Strange that there is basically no help on this issue online. I've discovered through trial and error that this is caused by a Windows update that breaks IE: Cumulative Security Update for Internet

I have written the following .NET Framework 3.5 C# method which takes the location of an XML document and an object representation of an X509 digital certificate (with a private key) and returns the XML document as an object with the XML Signature (XMLDsig) embedded as first child element of the root. The thing is that I direly need to be able to do the exact same procedure with Java SE 6, but I have not written any Java in ages and have no clue where to begin. Can anyone provide the equivalent method in Java code that produces the exact same XML output? private static XmlDocument