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Paper 2015/1210
Quantum Security of the Fujisaki-Okamoto and OAEP Transforms
Ehsan Ebrahimi Targhi and Dominique Unruh
Abstract
In this paper, we present a hybrid encryption scheme that is chosen ciphertext secure in the quantum random oracle model. Our scheme is a combination of an asymmetric and a symmetric encryption scheme that are secure in a weak sense. It is a slight modification of the Fujisaki-Okamoto transform that is secure against classical adversaries. In addition, we modify the OAEP-cryptosystem and prove its security in the quantum random oracle model based on the existence of a partial-domain one-way injective function secure against quantum adversaries.
Metadata
- Available format(s)
- Publication info
- Preprint. MINOR revision.
- Keywords
- QuantumRandom oracle
- Contact author(s)
- ehsan ebrahimi targhi @ ut ee
- History
- 2015-12-19: received
- Short URL
- https://ia.cr/2015/1210
- License
-
CC BY