cipher-base
Abstract base class to inherit from if you want to create streams implementing the same api as node crypto streams.
Requires you to implement 2 methods _final and
_update. _update takes a buffer and should
return a buffer, _final takes no arguments and should
return a buffer.
The constructor takes one argument and that is a string which if
present switches it into hash mode, i.e. the object you get from
crypto.createHash or crypto.createSign, this switches the name of the
final method to be the string you passed instead of final
and returns this from update.