First attempt at a +sign which works on ed25519 ring signatures.
First attempt at a +sign which works on ed25519 ring signatures.

This is an attempt at implementing optionally linkable ring signatures
in hoon. This vaguely follows adjoint.io's haskell implementation of AOS,
except we make the linkage tag configurable (a trick I first saw with
DEDIS' kyber implementation of the algorithm).

Not only is this crypto code unaudited, it doesn't even work. I can't get
real ed25519 public/private keypairs out of the zuse stdlib, and when using
fake values, I'm getting subtraction-overflow errors, so I've just jammed
a 0 in there for now.

jfranklin9000/urbit,urbit/urbit,jfranklin9000/urbit,ngzax/urbit,ngzax/urbit,urbit/urbit,urbit/urbit,urbit/urbit,jfranklin9000/urbit,ngzax/urbit,ngzax/urbit,jfranklin9000/urbit,urbit/urbit,ngzax/urbit,ngzax/urbit,ngzax/urbit,urbit/urbit,jfranklin9000/urbit,jfranklin9000/urbit,jfranklin9000/urbit,urbit/urbit