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Proxy Re-encryption with Delegatable Verifiability

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Information Security and Privacy (ACISP 2016)

Part of the book series: Lecture Notes in Computer Science ((LNSC,volume 9723))

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Abstract

Proxy re-encryption is a public key encryption technique that allows a proxy to perform re-encryption without exposing the corresponding plaintext. As a result, proxy re-encryption has increased utility, and can be used in a number of fields including cloud computing. In previous proxy re-encryption schemes, a proxy is assumed to follow the protocol explicitly. However, this is far from the norm, and the assumption is not always true, especially in cloud computing where public cloud is considered untrusted. In this paper, we investigate the verifiability of the re-encryption process. Specifically, we first formalize the proxy re-encryption with delegatable verifiability and its corresponding security model. Then, we propose the first proxy re-encryption scheme with delegatable verifiability. Finally, security proofs of the proposal are also formally given in the proposed security models.

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Acknowledgements

This work is partly supported by Nanyang Technological University under Grant MOE Tier 1 (M4011450) and NSERC (Natural Sciences and Engineering Research Council of Canada), Canada.

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Correspondence to Xiaodong Lin .

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Lin, X., Lu, R. (2016). Proxy Re-encryption with Delegatable Verifiability. In: Liu, J., Steinfeld, R. (eds) Information Security and Privacy. ACISP 2016. Lecture Notes in Computer Science(), vol 9723. Springer, Cham. https://doi.org/10.1007/978-3-319-40367-0_8

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  • DOI: https://doi.org/10.1007/978-3-319-40367-0_8

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-40366-3

  • Online ISBN: 978-3-319-40367-0

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