Efficient identity based aggregate signcryption scheme using bilinear pairings over elliptic curves

Signcryption is a cryptographic primitive that performs signature and encryption simultaneously at a cost significantly lower than the traditional signature-then-encryption methodology. An aggregate signature scheme is a digital signature scheme that combines n signatures on n different messages fro...

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Bibliographic Details
Published in:Journal of physics. Conference series 2019-10, Vol.1344 (1), p.12010
Main Authors: Swapna, G., Reddy, P. Vasudeva
Format: Article
Language:English
Subjects:
Cryptography
Curves
Digital signatures
Encryption
Physics
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Summary:Signcryption is a cryptographic primitive that performs signature and encryption simultaneously at a cost significantly lower than the traditional signature-then-encryption methodology. An aggregate signature scheme is a digital signature scheme that combines n signatures on n different messages from n different users to a single signature. In this paper, we propose an aggregate signcryption scheme in the identity based setting using bilinear pairings over elliptic curves by combining aggregate signatures with signcryption schemes. We prove that our scheme is secure and satisfies the unforgeability and confidentiality in the random oracle model with the assumptions that the CBDHP and BDHP are hard. Also our scheme is public verifiable and requires constant number of pairings for aggregate verification. Comparing with previous schemes of this kind, our scheme is more efficient in computation and communication.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1344/1/012010