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arXiv cs.CRSep 30, 2026

On The Simplest Quantum-Secure Block Cipher

Two-round Even-Mansour is proven quantum-secure against adaptive quantum queries in the ideal permutation model.

cryptography even-mansour

9

arXiv cs.CRSep 28, 2026

Indistinguishability of Sum of Permutations: A Fourier Analytic Route to Classical and Quantum Security

Fourier analysis bounds classical and quantum security of sums of random permutations.

cryptography indistinguishability

7