The paper supplies the first post-quantum security proofs for FX, LRW, XEX and standard block-cipher modes in both the plain model and the quantum ideal-cipher model.
Choose uniforms∈S, and define (E (1))−1 as (E(1) k∗ )−1(y) = ( E−1 k∗ (y) ifk ∗ ̸=k 0 E−1 k0 ◦swap yj+1 ⊕k2, s (y) ifk ∗ =k 0
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Post-Quantum Security of Block Cipher Constructions
The paper supplies the first post-quantum security proofs for FX, LRW, XEX and standard block-cipher modes in both the plain model and the quantum ideal-cipher model.