Labels containing a space sign are improperly encoded in the Totp.uri method output

[divarvel]

UrlEncoder encodes spaces as + instead of %20, which is consistent with application/x-www-form-urlencoded and OK in query strings, but causes an error if it's in other components.

A solution would be to use java.net.URI to build the uri. I can write a PR if needed.

[tovine]

I too got bitten by this today. Technically it should be fixed in the URLEncoder class, but as long as the Java library implementation isn't fully standard compliant you should implement a suitable workaround.