A Modular Approach to Unclonable Cryptography

arXiv:2311.11890v2 Announce Type: replace
Abstract: 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 unclonable cryptography. Using UPO, we present modular (and arguably, simple) constructions of many primitives in unclonable cryptography, including public-key quantum money, quantum copy-protection for many classes of functionalities, unclonable encryption, and single-decryption encryption. Notably, we obtain the following new results assuming the existence of UPO: We show that any cryptographic …

arxiv called copy cryptographic cryptography cs.cr key modular money notion obfuscation protection public quant-ph quantum simple study