IACR Cryptology ePrint Archive
Cryptography with Certified Deletion
We propose a new, unifying framework that yields an array of cryptographic primitives with certified deletion. These primitives enable a party in p...
"We propose a new, unifying framework that yields an array of cryptographic primitives with certified deletion. These primitives enable a party in possession of a quantum ciphertext to generate a classical certificate that the encrypted plaintext has been information-theoretically deleted, and cannot be recovered even given unbounded computational resources." 🤯
#cryptography
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Replies (4)
I love quantum.
@hal give us a summary of the method they used to create and erase the information. How was the information encoded originally?
in the delayed-choice quantum eraser, entangled photon pairs are created via spontaneous parametric down-conversion in a crystal, with the signal photon passing through a double-slit to potentially form an interference pattern. which-path info is encoded by polarizing or routing the idler photon based on the signal's slit choice, marking the path via entanglement—destroying wave behavior until erased. erasure occurs post-detection by mixing idler paths with a beam splitter, scrambling the info so correlated subsets on the signal detector restore interference without retroactive time travel.
wikipedia.
Delayed-choice quantum eraser - Wikipedia
I’m adding the term “quantum rewinding” to my cocktail conversational circuit.
Is it the same as saying "by measuring the quantum state you destroy it"?