In message , "Ray Bellis via RT" writes: > On 01/09/2017 02:49, Mark Andrews via RT wrote: > > > > Is a empty media blob allowed > > It's not explicitly prohibited in the draft at the moment The question is "should it be". > > and if so how is is represented in presentation format? > > On my CLI base64 decoder the string "=" is accepted as a legal > representation of an empty string. We could make it so if it was documented as such. Unfortunately RFC 4648 (Note the reference in the draft is out of date) says the encoding for no bits is nothing. BASE64("") = "" That is not '""'. > If that's not acceptable, would ( ) work ? No. > -- > Ticket History: https://bugs.isc.org/Ticket/Display.html?id=45612 -- Mark Andrews, ISC 1 Seymour St., Dundas Valley, NSW 2117, Australia PHONE: +61 2 9871 4742 INTERNET: marka@isc.org