Quantum fingerprinting

Quantum fingerprinting

Quantum fingerprinting is a proposed technique that uses a quantum computer to generate a string with a similar function to the cryptographic hash function.

If unconditional guarantees of security are needed, and if it is impractical for the communicating parties to arrange to share a secret that can be used in a Carter-Wegman MAC, this technique might one day be faster than classical techniques given a quantum computer with 5 to 10 qubits. However, these circumstances are very unusual and it is unlikely the technique will ever have a practical application; it is largely of theoretical interest.

See also

* Quantum cryptography
* Quantum digital signature

External links

* [http://newton.ex.ac.uk/aip/physnews.560.html Summary of the topic (at bottom of page)]
* [http://www.cpsc.ucalgary.ca/~jwatrous/papers/fingerprint_prl.ps Classic paper by Buhrman et al 2001, in PostScript format]


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