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Time-Space Tradeoffs for Sponge Hashing: Attacks and Limitations for Short Collisions
Aug. 7, 2022, 4:54 p.m. |
IACR News www.iacr.org
ePrint Report: Time-Space Tradeoffs for Sponge Hashing: Attacks and Limitations for Short Collisions
Cody Freitag, Ashrujit Ghoshal, Ilan Komargodski
Sponge hashing is a novel alternative to the popular Merkle-Damgård hashing design. The sponge construction has become increasingly popular in various applications, perhaps most notably, it underlies the SHA-3 hashing standard. Sponge hashing is parametrized by two numbers, $r$ and $c$ (bitrate and capacity, respectively), and by a fixed-size permutation on $r+c$ bits. In this work, we study the collision resistance …
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