Ever since the Rubik’s Cube was released, it’s taunted almost a half billion tinkerers who think they can crack its confounding mysteries, only to be stymied by its maddening secrets. Now, it’s time ...

“It’s a little plastic toy,” said Jessica Fridrich, tossing a Rubik’s Cube between her long-fingered hands on a stormy afternoon in her office at Binghamton University, her fingernails painted with a ...