Deterministic quantum-public-key encryption: Forward search attack and randomization
- 21 April 2009
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 79 (4), 042327
- https://doi.org/10.1103/physreva.79.042327
Abstract
In the classical setting, public-key encryption requires randomness in order to be secure against a forward search attack, whereby an adversary compares the encryption of a guess of the secret message with the encryption of the actual secret message. We show that this is also true in the information-theoretic setting—where the public keys are quantum systems—by defining and giving an example of a forward search attack for any deterministic quantum-public-key bit-encryption scheme. However, unlike in the classical setting, we show that any such deterministic scheme can be used as a black box to build a randomized bit-encryption scheme that is no longer susceptible to this attack.Keywords
This publication has 6 references indexed in Scilit:
- Erratum: Applications of single-qubit rotations in quantum public-key cryptography [Phys. Rev. A77, 032348 (2008)]Physical Review A, 2008
- Applications of single-qubit rotations in quantum public-key cryptographyPhysical Review A, 2008
- Experimentally realizable quantum comparison of coherent states and its applicationsPhysical Review A, 2006
- A Three-Stage Quantum Cryptography ProtocolFoundations of Physics Letters, 2006
- Foundations of CryptographyPublished by Cambridge University Press (CUP) ,2004
- Quantum FingerprintingPhysical Review Letters, 2001