Security of permutation-based compression function lp231 lp 231
We study the security of a single permutation based compression function lp231. lp231 provides 2n/3 2 n / 3 -bit preimage resistance for the output size n. lp231 provides n/2 n / 2 -bit collision resistance ignoring log factor.
preimage resistance collision resistance cryptography hash function random permutation model provable security