Constructing One-Way Puzzles from Quantum-Average-Hardness of the GapK Problem
Quantum-average-hardness of the GapK problem implies the existence of one-way puzzles, a fundamental primitive in quantum cryptography.
고도화된 이점 증폭 기법을 활용한 간섭 여부 양자 키 분배 프로토콜
고도화된 이점 증폭 기법을 INI-QKD 프로토콜에 적용하여 편광 정렬 오류와 위상 불일치 오류가 높은 상황에서도 비밀 키 생성 속도와 전송 거리를 크게 향상시킬 수 있다.
高度な量子鍵配送プロトコルINI-QKDにおける利点ディスティレーションの効果
INI-QKDプロトコルにおいて、利点ディスティレーション(AD)を適用することで、偏光ミスアライメントや位相ずれの高い条件下でも秘密鍵レートと通信距離を大幅に改善できる。
Orthogonal-State-Based Measurement-Device-Independent Quantum Communication Protocols for Secure Direct Messaging and Dialogue
The authors propose the first orthogonal-state-based protocols of measurement-device-independent quantum secure direct communication and quantum dialogue, which leverage fundamentally distinct resources to close security loopholes linked to measurement devices and effectively double the distance for secure direct message transmission compared to traditional quantum communication methods.
Improved Security Analysis of Phase Error Estimation in Quantum Key Distribution
The authors propose an improved method for security analysis of phase error estimation in quantum key distribution (QKD) protocols, which can provide better performance compared to the traditional postselection method.
Efficient Construction of Statistically Secure Pseudorandom States and Commitments in the Common Haar State Model
The authors construct a statistically secure pseudorandom state generator in the common Haar state model, where the output length is strictly larger than the key size. They also construct an unconditionally secure quantum commitment scheme in the same model.
Constructing and Separating Quantum Pseudorandomness from a Single Haar Random State
A single Haar random quantum state can be used to construct single-copy pseudorandom states (1PRS), which are computationally indistinguishable from a Haar random state for a single copy. However, this single Haar random state is not sufficient to construct the stronger notion of (multi-copy) pseudorandom states (PRS).
Quantum One-Way State Generators Imply Quantum Commitments
Quantum one-way state generators (OWSGs) with O(n/log(n)) copies are equivalent to quantum commitments and to polytime-copy OWSGs. The weakest OWSGs from which quantum commitments can be obtained are those with O(n/log(n)) copies.
Quantum Money from Abelian Group Actions: Construction and Security Analysis
Konstruktion und Sicherheitsanalyse von öffentlichem Schlüsselquantengeld aus abelschen Gruppenaktionen.
CRYSTALS-Dilithium Quantum Security Evaluation
SelfTargetMSIS hardness proof for Dilithium security.
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