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Paper 2012/561
An Attack on a Fully Homomorphic Encryption Scheme
Hu Yupu, Wang Fenghe
Abstract
In this paper we present an attack on a fully homomorphic encryption scheme on PKC2010. We construct a modi¯ed secret key, a modi¯ed decryption algorithm and a subset of the ciphertext space. When the ciphertext is from the subset, we can correctly decrypt it by our modi¯ed secret key and modi¯ed decryption algorithm. We also discuss when our modi¯ed decryption algorithm is e±cient, and when the subset is not negligible.
Metadata
- Available format(s)
-
PDF
- Category
- Public-key cryptography
- Publication info
- Published elsewhere. Unknown where it was published
- Keywords
- Fully Homomorphic Encryptionlattice-based PKCcloud-computation.
- Contact author(s)
- yphu @ mail xidian edu cn,fenghe2166 @ 163 com
- History
- 2012-10-02: received
- Short URL
- https://ia.cr/2012/561
- License
-
CC BY
