Exploiting Weak Diffusion of Gimli: Improved Distinguishers and Preimage Attacks
The Gimli permutation proposed in CHES 2017 was designed for cross-platform performance. One main strategy to achieve such a goal is to utilize a sparse linear layer (Small-Swap and Big-Swap), which occurs every two rounds. In addition, the round constant addition occurs every four rounds and only...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Ruhr-Universität Bochum
2021-03-01
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| Series: | IACR Transactions on Symmetric Cryptology |
| Subjects: | |
| Online Access: | https://tosc.iacr.org/index.php/ToSC/article/view/8837 |