Abstract
Recently, blockchain technology has attracted much attention of the research community in several domains requiring transparency of data accountability, due to the removal of intermediate trust assumptions from third parties. One such application is enabling file sharing in blockchain enabled distributed cloud storage. Proxy re-encryption is a cryptographic primitive that allows such file sharing by re-encrypting ciphertexts towards legitimate users via semi-trusted proxies, without them learning any information about the underlying message. To facilitate secure data sharing in the distributed cloud, it is essential to construct efficient proxy re-encryption protocols. In this paper, we introduce the notion of proxy self re-encryption (SE-PRE) that is highly efficient, as compared to the existing PRE schemes in the literature. We show that our self encryption scheme is provably CCA secure based on the DLP assumption and our proxy re-encryption scheme with self encryption is CCA secure under the hardness of the Computational Diffie Hellman (CDH) and Discrete Logarithm (DLP) assumption. Our novel encryption scheme, called self encryption, has no exponentiation or costly pairing operation. Even the re-encryption in SE-PRE does not have such operations and this facilitates the service provider with efficiency gain.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
0box application by 0chain: https://0chain.net/zerobox
Ochain website: https://0chain.net
Selvi, S.S.D., Paul, A., Pandu Rangan, C.: A provably-secure unidirectional proxy re-encryption scheme without pairing in the random oracle model. In: CANS, Lecture Notes in Computer Science, vol. 11261, pp. 459–469. Springer (2017)
Blaze, M., Bleumer, G., Strauss, M.: Divertible protocols and atomic proxy cryptography. In: Advances in Cryptology—EUROCRYPT\(^{\prime }\)98, International Conference on the Theory and Application of Cryptographic Techniques, Espoo, Finland, May 31 - June 4, 1998, Proceeding, pp. 127–144 (1998)
Ateniese, G., Fu, K., Green, M., Hohenberger, S.: Improved proxy re-encryption schemes with applications to secure distributed storage. In: Proceedings of the Network and Distributed System Security Symposium, p. 2005. NDSS, San Diego, California, USA (2005)
Ateniese, G., Fu, K., Green, M., Hohenberger, S.: Improved proxy re-encryption schemes with applications to secure distributed storage. ACM Trans. Inf. Syst. Secur. 9(1), 1–30 (2006)
Selvi, S.S.D., Paul, A., Pandu Rangan, C.: An efficient non-transferable proxy re-encryption scheme. In: Proceedings of the 8th International Conference on Applications and Techniques in Information Security—ATIS 2017, Auckland, New Zealand, July 6-7, 2017, pp. 35–47 (2017)
Nuñez, D., Agudo, I., López, J.: Proxy re-encryption: Analysis of constructions and its application to secure access delegation. J. Netw. Comput. Appl. 87, 193–209 (2017)
IAgudo, I., Nuez, D., Lopez, J.: A parametric family of attack models for proxy re-encryption. Cryptology ePrint Archive, Report 2016/293 (2016). https://eprint.iacr.org/2016/293
Bernstein, D.J.: The GO programming language. https://golang.org/
Bernstein, D.J.: Curve25519: new diffie-hellman speed records. In: Proceedings of the 9th International Conference on Theory and Practice of Public-Key Cryptography—PKC 2006, New York, NY, USA, April 24-26, 2006, pp. 207–228 (2006)
Mayer, H.: Ecdsa security in bitcoin and ethereum: a research survey. CoinFaabrik, June 28 (2016)
El Gamal, T.: A public key cryptosystem and a signature scheme based on discrete logarithms. IEEE Trans. Inf. Theory 31(4), 469–472 (1985)
Acknowledgements
We would like to thank the anonymous reviewers whose comments helped us improve this paper.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2020 Springer Nature Switzerland AG
About this paper
Cite this paper
Selvi, S.S.D., Paul, A., Dirisala, S., Basu, S., Rangan, C.P. (2020). Sharing of Encrypted Files in Blockchain Made Simpler. In: Pardalos, P., Kotsireas, I., Guo, Y., Knottenbelt, W. (eds) Mathematical Research for Blockchain Economy. Springer Proceedings in Business and Economics. Springer, Cham. https://doi.org/10.1007/978-3-030-37110-4_4
Download citation
DOI: https://doi.org/10.1007/978-3-030-37110-4_4
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-030-37109-8
Online ISBN: 978-3-030-37110-4
eBook Packages: Economics and FinanceEconomics and Finance (R0)