Hongli Li Changlun Li Honggang Hu Fengmei Liu Indifferentiability of the Sponge Hash Family: New Attacks and the Optimal Construction. 2026 31-75 2026 IACR Trans. Symmetric Cryptol. 1 https://doi.org/10.46586/tosc.v2026.i1.31-75 db/journals/tosc/tosc2026.html#LiLHL26 streams/journals/tosc