This is used in the file boost/archive/impl/basic_text_oprimitive.ipp . Perhaps this might shed some light on how its used. Robert Ramey Kervin L. Pierre wrote:

Hello,

Does someone have an example of how to use the base64_from_binary class to convert a 'char *' buffer to base64 text in a local buffer?

I believe this is probably one of the simplest uses of the function but I can't make sense of the documentation.

Best regards, Kervin