Superb explanation of effect of quantum computing on various algs here https://crypto.stackexchange.com/questions/59375/are-hash-functions-strong-against-quantum-cryptography-and-or-independent-enough
Dredge but came across this which explained quantum computing well to this luddite.
https://youtu.be/92Ntk4niqPo
@Stonehedge started
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Superb explanation of effect of quantum computing on various algs here https://crypto.stackexchange.com/questions/59375/are-hash-functions-strong-against-quantum-cryptography-and-or-independent-enough