Inner product encryption from ring learning with errors

The functional encryption scheme designed using the lattice can realize fine-grained encryption and it can resist quantum attacks. Unfortunately, the sizes of the keys and ciphertexts in cryptographic applications based on learning with errors are large, which makes the algorithm inefficient. Theref...

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Bibliographic Details
Published in:Cybersecurity (Singapore) 2020-11, Vol.3 (1), p.1-11, Article 22
Main Authors: Fang, Shisen, Yang, Shaojun, Zhang, Yuexin
Format: Article
Language:English
Subjects:
Algorithms
Computer Science
Cryptography
Data-Driven Security 2020
Encryption
Functional encryption
Inner product encryption
Lattices
Machine learning
Ring learning with errors
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Summary:The functional encryption scheme designed using the lattice can realize fine-grained encryption and it can resist quantum attacks. Unfortunately, the sizes of the keys and ciphertexts in cryptographic applications based on learning with errors are large, which makes the algorithm inefficient. Therefore, we construct a functional encryption for inner product predicates scheme by improving the learning with errors scheme of Agrawal et al. [Asiacrypt 2011], and its security relies on the difficulty assumption of ring learning with errors. Our construction can reduce the sizes of the keys and ciphertexts compared with the learning with errors scheme.
ISSN:2523-3246
2523-3246
DOI:10.1186/s42400-020-00062-6