Paper 2019/1257 Original: eprint.iacr.org/2019/1257 ↗
Expressive CP-ABE Scheme Satisfying Constant-Size Keys and Ciphertexts
Abstract
Ciphertext-policy attribute-based encryption (CP-ABE) is a desirable scheme to use in cloud-based applications, especially on IoT devices. As most of these devices are battery-limited and memory-limited, leading to a constraint in designing a robust and straightforward mechanism involving less computation and less memory. But none of the systems are secure and based on conventional cryptosystems. Here we propose a constant-size secret key and constant-size ciphertext scheme based on RSA cryptosystem, which performs encryption and decryption in O(1) time complexity. We also prove that the scheme is secure and compare it with already existing schemes.
Metadata
- Available format(s)
PDF- Category
- Public-key cryptography
- Publication info
- Preprint.
- History
- 2019-11-05: last updated
- 2019-11-05: published
- Short URL
- https://ia.cr/2019/1257
- License
- https://creativecommons.org/licenses/by/4.0/
BibTeX
@misc{cryptoeprint:2019/1257,
author = {Dhaval Khandla and Het Shahy and Manish Kumar Bz and Alwyn Roshan Pais and Nishant Raj},
title = {Expressive CP-ABE Scheme Satisfying Constant-Size Keys and Ciphertexts},
howpublished = {Cryptology {ePrint} Archive, Paper 2019/1257},
year = {2019},
url = {https://eprint.iacr.org/2019/1257}
}