Papers by sangeeta mashahary
Cryptologia, 2010
Over the years, several identity-based signature schemes using bilinear pairings have been propos... more Over the years, several identity-based signature schemes using bilinear pairings have been proposed, but most of them suffer from key escrow problems and require a secure channel during the private key issuance stage. In this paper, we present an identity-based signature scheme variant using bilinear pairings. We use a binding-blinding technique to eliminate key escrow problems and to avoid using a secure channel in the key issuance stage. We then extend the proposed scheme to a multi-signature scheme. We show that both schemes are secure against chosen message attacks.
Advances in Communication, Devices and Networking, 2018
An aggregate signature is a short digital signature which is the output of aggregation process. T... more An aggregate signature is a short digital signature which is the output of aggregation process. The signature aggregation is done on k signatures of k distinct messages from k distinct users. As the produced signature size is shorter, so it will be efficient to use the schemes in low-bandwidth communication environment. In this paper, we proposed two identity-based aggregate signature schemes from bilinear pairing operations. The proposed schemes are secure against existential forgery under adaptively chosen message and identity attack in the random oracle model based on the assumption of intractability of the computational Diffie-Hellman problem (CDHP). The efficiency analysis of the proposed identity-based aggregate signature schemes with other established identity-based aggregate signature schemes is also done in this paper.
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Papers by sangeeta mashahary