4 ms·A quantum computer could potentially turn it from impossible to merely nearly impossible.by meowface 5y agoA quantum computer could potentially turn it from impossible to merely nearly impossible.Anunayj 5y agohow so?meowface 5y agohttps://en.wikipedia.org/wiki/Grover%27s_algorithm https://en.wikipedia.org/wiki/Grover%27s_algorithm If it works as believed, it should effectively reduce solving SHA-256 to solving SHA-128. Which is extremely difficult, but theoretically possible.