Episode Details

This Sunday's think piece takes on quantum cryptography's strangest promise: uncloneable encryption, which uses the no-cloning theorem to make copying a stolen ciphertext physically impossible rather than just computationally hard. We walk four competing camps — unconditional security, efficient reusability, weakest-assumption 'microcrypt,' and the impossibility theorists keeping everyone honest — that all published within weeks of each other trying to push the primitive from a single guaranteed bit toward real, arbitrary-length messages.

• Linked sources: Statistically secure uncloneable encryption of arbitrary messages — arXiv
• Efficient Unclonable Encryption from Pauli Eigenstates — arXiv
• A Note on Boosting Uncloneable Encryption in Microcrypt — arXiv
• Unclonable Encryption in the Haar Random Oracle Model — IACR ePrint Archive
• The uncloneable bit exists — arXiv
• Limitations on Uncloneable Encryption and Simultaneous One-Way-to-Hiding — arXiv

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