Quantum Private Information Retrieval, Explained
Quantum private information retrieval lets a user fetch data from a database without revealing which item was asked for. Protocols and limits.
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739 articlesQuantum private information retrieval lets a user fetch data from a database without revealing which item was asked for. Protocols and limits.
Methods for verifying data integrity with quantum techniques, how they compare with classical checks and where they could be used.
Quantum anonymous transmission hides who sent a message and to whom using shared entanglement. How the protocols work and their limits.
Quantum multi-party computation lets several parties compute jointly on private data using quantum resources. Protocols, security and scaling.
Quantum coin tossing protocols and their bias bounds: why perfect strong coin flipping is impossible and what weak protocols achieve.
Public-key cryptography after quantum computers: why Shor’s algorithm breaks RSA and ECC, and the lattice, code, multivariate and hash schemes.
Quantum secret splitting divides a secret among several holders using quantum states so no single holder can read it. How it works in practice.
Quantum encryption algorithms and their security: QKD protocols such as BB84, entanglement-based methods, challenges and post-quantum options.
How symmetric keys can be distributed over quantum channels with QKD, the protocols involved, and how this compares with classical methods.
Quantum position verification tries to prove a party’s location using quantum signals. Why no-go results limit it and what still works.
Quantum identification protocols verify identity using quantum states and keys. Entanglement-based schemes, QKD systems and security.
Quantum bit string commitment commits to a whole string with partial hiding and binding. The trade-offs, known bounds and uses.