# File lib/openid/consumer.rb, line 531
    def genToken(nonce, consumer_id, server_id, server_url)
      timestamp = Time.now.to_i.to_s
      joined = [timestamp, nonce, consumer_id,
                server_id, server_url].join("\x00")
      sig = OpenID::Util.hmacSha1(@store.getAuthKey, joined)
      OpenID::Util.toBase64(sig+joined)
    end