3 papers
quant-ph2026
Copy-Protection with Correlated Challenges: Point Functions and More via Decisional Coset Monogamy
Amit Behera, Alper Çakan, Vipul Goyal
Copy-protection encodes a functionality in a reusable quantum state that cannot be split into two states (freeloader adversaries) which remain simultaneously useful. Prior plain-mo…
quant-ph2024
A New World in the Depths of Microcrypt: Separating OWSGs and Quantum Money from QEFID
Amit Behera, Giulio Malavolta, Tomoyuki Morimae +2
While in classical cryptography, one-way functions (OWFs) are widely regarded as the "minimal assumption," the situation in quantum cryptography is less clear. Recent works have pu…
cs.CR2023
A Modular Approach to Unclonable Cryptography
Prabhanjan Ananth, Amit Behera
We explore a new pathway to designing unclonable cryptographic primitives. We propose a new notion called unclonable puncturable obfuscation (UPO) and study its implications for un…