New answers tagged preimage-resistance
2
Generic expected pre-image resistance for a hash function with $n$-bit output is $\mathcal{O}(2^n)$
Generic expected collision resistance for a hash function with $n$-bit output is $\mathcal{O}(\sqrt{2^n}) = \mathcal{O}(2^{n/2})$ due to the generic birthday attack on the hash functions.
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