Yubico Forum

Hello
I'm trying to integrate U2F authentication in our web application using the sample code you provide.
Both on our application than with your u2flib-server-demo application when I try to perform a registration I get following error message:



What could be its reason?

I'm performing the tests on Ubuntu 14.04 using Chrome version 63.0.3239.59 and a Yubikey NEO

Thanks a lot for your support and best regards

Patrick

Hello,
the problem I had yesterday was probably related to my Ubuntu PC.
I've tried now using a MacOS and it works fine.
However when I try to register in my application (where for the moment I've simply used the sample code provided in your example) I get a "Bad signature" error message during the finishRegistration method:



The RegisterResponse and RegisterRequestData seem correct...

What could be the cause of this problem?

Thanks and best regards

Thanks to the support of the Yubico team I could solve this problem:

Debugging the class BouncyCastleCrypto I could find out the source of the problem. The following exception was thrown at the line "ecdsaSignature.initVerify(publicKey);":

java.security.InvalidKeyException: No installed provider supports this key: org.bouncycastle.jce.provider.JCEECPublicKey

The source of it was a conflict in the version of BouncyCastle used inside the application (we had a dependent library which depended on an older version of BC). Fixing the dependencies solved the problem.

Thanks a lot for your precious help and best regards.
Patrick