puzzle friendliness
Collision resistance
Collision attack
Preimage attack
https://source.unsplash.com/featured/?puzzle-friendliness#.png
/suto3/google.icon
puzzle friendliness
/suto3/Google画像検索.icon
puzzle friendliness
/suto3/Google定義検索.icon
puzzle friendliness
/suto3/wikipedia.icon
puzzle friendliness
/suto3/weblio.icon
puzzle friendliness
/suto3/kotobank.icon
puzzle friendliness
/suto3/jisho.icon
puzzle friendliness