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quant-ph2025
Proofs of quantum memory
Minki Hhan, Tomoyuki Morimae, Yasuaki Okinaka +1
With the rapid advances in quantum computer architectures and the emerging prospect of large-scale quantum memory, it is becoming essential to classically verify that remote device…
quant-ph2025
Quantum Lifting for Invertible Permutations and Ideal Ciphers
Alexandru Cojocaru, Minki Hhan, Qipeng Liu +2
In this work, we derive the first lifting theorems for establishing security in the quantum random permutation and ideal cipher models. These theorems relate the success probabilit…
quant-ph2024
Pseudorandom Function-like States from Common Haar Unitary
Minki Hhan, Shogo Yamada
Recent active studies have demonstrated that cryptography without one-way functions (OWFs) could be possible in the quantum world. Many fundamental primitives that are natural quan…