[17] : feistel - 5 - 15 solves : crypto: I just made a brand new cipher!  Can you recover the key? https://s3.amazonaws.com/bostonkeyparty/2016/365ed3941ca31214edfa942df37e73726bc07d0f   52.86.232.163:32785 Revert mistaken point value from 3 to 5 before any solves.  Please tell gsilvis if you think this is unfair, and we may un-revert