Markus Hahn

When converting to what-looks-like-a-number in https://github.com/agsh/onvif/blob/a218a6b836b5088f7c953cca6a3835d0a99ab287/lib/utils.js#L36 it can scramble strings which are not numbers, e.g. Wiegand (binary) codes represented like `"101010100110011010"`, beyond 56bit length. Those then turn into a numbers...

It seems that none of the values going into the XML are getting encoding. Having anything with an ampersand e.g. leads to verification failure. Example: licence_data += u"\t" + signature...