http://u.qdnx.org/file/erkan-20141008T073745-pq6v3lt.html
" #SPHINCS-256: high #security post-quantum stateless hash-based signature scheme, signs 100s of messages per second on modern 4-core 3.5GHz Intel CPU. ... designed to provide long-term 2^128 security even against attackers equipped with #quantum computers." http://sphincs.cr.yp.to cc @question