33 citations · 38 across the 9 of their papers we have counts for
11 papers
Classical Verifier Position Verification from Non-Local Games
Wen Yu Kon, Fatih Kaleoglu, Kaushik Chakraborty
Secure position verification certifies that a remote prover occupies a claimed location, a task that is provably impossible with classical resources alone against colluding adversa…
Loss-Tolerant Quantum Position Verification for Metropolitan Area Networks
Wen Yu Kon, Niccolò Bigagli, Andrew Conrad +13
A spacetime seal, a cryptographic guarantee that a digital event has occurred at an approved location and time, can augment a digital signature with location attestation for legal,…
A Practical Post-Quantum Distributed Ledger Protocol for Financial Institutions
Yeoh Wei Zhu, Naresh Goud Boddu, Yao Ma +5
Traditional financial institutions face inefficiencies that can be addressed by distributed ledger technology. However, a primary barrier to adoption is the privacy concerns surrou…
Certified randomness amplification by dynamically probing remote random quantum states
Minzhao Liu, Pradeep Niroula, Matthew DeCross +49
Cryptography depends on truly unpredictable numbers, but physical sources emit biased or correlated bits. Quantum mechanics enables the amplification of imperfect randomness into n…
Quantum-Safe Identity Verification using Relativistic Zero-Knowledge Proof Systems
Yao Ma, Wen Yu Kon, Jefferson Chu +3
Identity verification is the process of confirming an individual's claimed identity, which is essential in sectors like finance, healthcare, and online services to ensure security…
Efficient Multi-basis Quantum Position Verification Secure against Generalized Adversaries
Wen Yu Kon, Ignatius William Primaatmaja, Kaushik Chakraborty +1
Quantum position verification (QPV) enables multiple verifiers to certify a prover's location using quantum communication and physical assumptions. With experimental demonstrations…
Certified randomness using a trapped-ion quantum processor
Minzhao Liu, Ruslan Shaydulin, Pradeep Niroula +29
While quantum computers have the potential to perform a wide range of practically important tasks beyond the capabilities of classical computers, realizing this potential remains a…
Applications of Certified Randomness
Omar Amer, Shouvanik Chakrabarti, Kaushik Chakraborty +8
Certified randomness can be generated with untrusted remote quantum computers using multiple known protocols, one of which has been recently realized experimentally. Unlike the ran…
On the Equivalence between Classical Position Verification and Certified Randomness
Fatih Kaleoglu, Minzhao Liu, Kaushik Chakraborty +4
Gate-based quantum computers hold enormous potential to accelerate classically intractable computational tasks. Random circuit sampling (RCS) is the only known task that has been a…
Quantum Authenticated Key Expansion with Key Recycling
Wen Yu Kon, Jefferson Chu, Kevin Han Yong Loh +5
Data privacy and authentication are two main security requirements for remote access and cloud services. While QKD has been explored to address data privacy concerns, oftentimes it…
On the Relativistic Zero Knowledge Quantum Proofs of Knowledge
Kaiyan Shi, Kaushik Chakraborty, Wen Yu Kon +3
We initiate the study of relativistic zero-knowledge quantum proof of knowledge systems with classical communication, formally defining a number of useful concepts and constructing…