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A Pairing-based Homomorphic Encryption Scheme for Multi-User Settings

A Pairing-based Homomorphic Encryption Scheme for Multi-User Settings

Zhang Wei
Copyright: © 2016 |Volume: 12 |Issue: 2 |Pages: 11
ISSN: 1548-3908|EISSN: 1548-3916|EISBN13: 9781466689213|DOI: 10.4018/IJTHI.2016040106
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MLA

Wei, Zhang. "A Pairing-based Homomorphic Encryption Scheme for Multi-User Settings." IJTHI vol.12, no.2 2016: pp.72-82. http://doi.org/10.4018/IJTHI.2016040106

APA

Wei, Z. (2016). A Pairing-based Homomorphic Encryption Scheme for Multi-User Settings. International Journal of Technology and Human Interaction (IJTHI), 12(2), 72-82. http://doi.org/10.4018/IJTHI.2016040106

Chicago

Wei, Zhang. "A Pairing-based Homomorphic Encryption Scheme for Multi-User Settings," International Journal of Technology and Human Interaction (IJTHI) 12, no.2: 72-82. http://doi.org/10.4018/IJTHI.2016040106

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Abstract

A new method is presented to privately outsource computation of different users. As a significant cryptographic primitive in cloud computing, homomorphic encryption (HE) can evaluate on ciphertext directly without decryption, thus avoid information leakage. However, most of the available HE schemes are single-user, which means that they could only evaluate on ciphertexts encrypted by the same public key. Adopting the idea of proxy re-encryption, and focusing on the compatibility of computation, the authors provide a pairing-based multi-user homomorphic encryption scheme. The scheme is a somewhat homomorphic one, which can do infinite additions and one multiplication operation. Security of the scheme is based on subgroup decision problem. The authors give a concrete security model and detailed security analysis.

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