4 papers
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…
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…
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…
A New Approach to Generic Lower Bounds: Classical/Quantum MDL, Quantum Factoring, and More
Minki Hhan
This paper studies the limitations of the generic approaches to solving cryptographic problems in classical and quantum settings in various models. - In the classical generic group…