The attack mounts a known-key distinguisher against 53 of 72 rounds in Threefish-256, and 57 of 72 rounds in Threefish-512.
Каждый из 72 раундов Threefish-256 и Threefish-512 имеет четыре MIX преобразования, Threefish-1024 — восемь обращений к MIX функции.