4 papers
Quantum Fire with Delegated Cloning
Rohit Chatterjee, Ananta Mukherjee, Vir Pathak +1
Quantum fire is a recently introduced cryptographic primitive consisting of efficiently preparable quantum states, called \emph{flames}, that admit efficient cloning but resist eff…
Track me if you can: Ephemeral coin tracing
Ignacio Amores-Sesar, Christian Cachin, Rohit Chatterjee +3
Privacy-preserving payment systems are well understood, yet concerns about their misuse for financial crime have led to only limited adoption in regulated settings such as central…
The Round Complexity of Black-Box Post-Quantum Secure Computation
Rohit Chatterjee, Xiao Liang, Omkant Pandey +1
We study the round complexity of secure multi-party computation (MPC) in the post-quantum regime. Our focus is on the fully black-box setting, where both the construction and secur…
A Note on the Post-Quantum Security of (Ring) Signatures
Rohit Chatterjee, Kai-Min Chung, Xiao Liang +1
This work revisits the security of classical signatures and ring signatures in a quantum world. For (ordinary) signatures, we focus on the arguably preferable security notion of bl…