This article delves into the complexity of password strength, combining concepts from thermal physics, cosmology, and computer science to determine the level of entropy needed for a password to be unbreakable by brute-force attacks. The calculation involves the theoretical Mother of All Computers (MOAC) consuming the mass-energy of the observable universe to crack a password with a specific number of entropy bits. The intricate analysis considers energy efficiency, temperature, density of the universe, and more to arrive at a final solution. Surprisingly, a password with 327 bits of entropy is nearly impossible to crack even with the universe’s full energy, highlighting the fascinating intersection of physics and cryptography.
https://seirdy.one/posts/2021/01/12/password-strength/