Quantum seals

Abstract

A quantum seal is a way of encoding a message into quantum states, so that anybody may read the message with little error, while authorized verifiers can detect that the seal has been broken. We present a simple extension to the Bechmann-Pasquinucci majority-voting scheme that is impervious to coherent attacks, and further, encompasses sealing quantum messages by means of quantum encryption. The scheme is relatively easy to implement, requiring neither entanglement nor controlled operations during the state preparation, reading or verification stages.

To appear in Physica Scripta, 4 pages

References in corpus (3)

• Quantum Cryptography
• Simple Proof of Security of the BB84 Quantum Key Distribution Protocol
• Optimal Encryption of Quantum Bits

Cited by in corpus (9)

• Cryptography in a Quantum World
• Upper bounds of a class of imperfect quantum sealing protocols
• Quantum bit string sealing
• Quantum String Seal Is Insecure
• Insecurity Of Imperfect Quantum Bit Seal
• The effectiveness of quantum operations for eavesdropping on sealed messages
• No-Go Bounds for Quantum Seals
• Applications of quantum message sealing
• Fishing for Eavesdroppers