Paper 2021/331
A Probabilistic Public Key Encryption Switching Protocol for Secure Cloud Storage Applications
Radhakrishna Bhat, N R Sunitha, and S S Iyengar
Abstract
The high demand for customer-centric applications such as secure cloud storage laid the foundation for the development of user-centric security protocols with multiple security features in recent years. But, the current state-of-art techniques primarily emphasized only one type of security feature i.e., either homomorphism or non-malleability. In order to fill this gap and provide a common platform for both homomorphic and non-malleable cloud applications, we have introduced a new public key based probabilistic encryption switching (i.e., homomorphism to/from non-malleability property switching during the encryption phase without changing the underlying security structure) scheme by introducing a novel Contiguous Chain Bit Pair Encryption (CC-BPE) and Discrete Chain Bit Pair Encryption (DC-BPE) techniques for plaintext bits encryption and using quadratic residuosity based trapdoor function of Freeman et al. [13] for intermediate ciphertext connections. The proposed scheme generates O ( m +2 log N ) bits of ciphertext where m ∈ N and m < n , n ∈ N is the plaintext size, N is the RSA composite. This security extension would be helpful to cover both homomorphism and non-malleability cloud applications. The superior performance of the proposed scheme has been tested in comparison to existing methods and is reported in this paper.
Metadata
- Available format(s)
-
PDF
- Category
- Public-key cryptography
- Publication info
- Preprint. MINOR revision.
- Keywords
- Probabilistic encryptionpublic key cryptosystemquadratic residuosity assumptionencryption switching protocolhomomorphic encryptionnon-malleabilitysecure cloud storage and retrieval
- Contact author(s)
- rsb567 @ gmail com
- History
- 2022-02-09: revised
- 2021-03-14: received
- See all versions
- Short URL
- https://ia.cr/2021/331
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2021/331,
author = {Radhakrishna Bhat and N R Sunitha and S S Iyengar},
title = {A Probabilistic Public Key Encryption Switching Protocol for Secure Cloud Storage Applications},
howpublished = {Cryptology {ePrint} Archive, Paper 2021/331},
year = {2021},
url = {https://eprint.iacr.org/2021/331}
}
