https://www.debian.org/doc/manuals/developers-reference/developer-duties.en.html#returning-after-retirement
first step will be trying to recognize you, best would be if you get yourself a key that is already signed by some active DD who can say "this guy named Barry is the same guy that used to be known as bdefreese@d.o more than a decade ago".
And you'll have to go through the nm process again - at least to make sure you are aware of our updated procedures and new tools and policy that have been implemented since you went inactive.