DotNetOpenAuth: Message signature was incorrect

Question

I\'m getting a \"Message signature was incorrect\" exception when trying to authenticate with MyOpenID and Yahoo.

I\'m using pretty much the ASP.NET MVC sample code

Answer 1

We fixed this issue by implementing IRelyingPartyApplicationStore (IOpenIdApplicationStore in newer versions of DotNetOpenAuth) and adding the store class name to the .config

  
    
      ...
      
    
  
  ...

The interface is a composition of two other interfaces with five members all together.

/// 

/// A hybrid of the store interfaces that an OpenID Provider must implement, and
/// an OpenID Relying Party may implement to operate in stateful (smart) mode.
/// 
public interface IOpenIdApplicationStore : ICryptoKeyStore, INonceStore
{
}

We used dumb mode as a quick fix to get up an running, but in the end you'll probably want something like this.