Paper 2021/105
A New Efficient Identity-Based Encryption Without Pairing
Majid Salimi
Abstract
So far, most of the Identity-Based Encryption (IBE) schemes have been realized by employing bilinear pairings, lattices, trapdoor discrete logarithm, or based on the quadratic residue problem. Among the IBE schemes, only pairing-based methods seem to be practical. Previously published non-pairing-based schemes are generally inefficient in encryption, decryption, key generation, ciphertext size or key size. In this paper, we propose an IBE scheme based on a hybrid of Diffie-Hellman and RSA-like hardness assumption. The computational cost of the proposed scheme is lower than the previous schemes and the ciphertext size for an $l$-bit plaintext is only $2l$ bits. The proposed scheme is similar to the well-known ElGamal encryption algorithm; therefore it might be used in applications such as oblivious computation.
Note: Submitted to Computer Standard & Interface
Metadata
- Available format(s)
-
PDF
- Category
- Public-key cryptography
- Publication info
- Preprint. MINOR revision.
- Keywords
- Identity-based encryptionDiscrete logarithm problemTrapdoor Decisional Diffie Hellman problem.
- Contact author(s)
- majidsalimi3 @ gmail com
- History
- 2021-02-06: last of 2 revisions
- 2021-01-28: received
- See all versions
- Short URL
- https://ia.cr/2021/105
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2021/105,
author = {Majid Salimi},
title = {A New Efficient Identity-Based Encryption Without Pairing},
howpublished = {Cryptology ePrint Archive, Paper 2021/105},
year = {2021},
note = {\url{https://eprint.iacr.org/2021/105}},
url = {https://eprint.iacr.org/2021/105}
}
