And https://github.com/postboy/cpwd https://github.com/postboy/cpwd is a full password manager that uses tarsnap's scrypt. O:-) So at least we know it can be do

And https://github.com/postboy/cpwd https://github.com/postboy/cpwd is a full password manager that uses tarsnap's scrypt. O:-) So at least we know it can be done. The scrypt utility describes itself as a demo with some rough edges, ymmv.