A Modular Approach to Unclonable Cryptography

ePrint Report: 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 unclonable cryptography. Using UPO, we present modular (and in some cases, 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 …

called cases cryptographic cryptography eprint report modular notion obfuscation report simple study