• AES (Advanced Encryption Standard): AES is a symmetric encryption algorithm widely used in government and industry. It offers key lengths of 128, 192 and 256 bits, providing strong security.

Widely used encryption algorithms like RSA and elliptic-curve cryptography (ECC) will be pointless. Depending on who is running the quantum computers, they will turn from superhero to supervillain.

The common, fairly simple encryption algorithm "MD5 was launched over 20 years ago and is still the most common implementation I see in the wild, though it’s gone from being relatively expensive ...