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An identity based signature allows users to sign their documents using their private keys and the signature can be verified by any one, using the identity of the signer and public parameters of the system. An aggregate signature scheme is a digital signature scheme which allows aggregation of different signatures by different users on different messages. The primary objective of aggregate signature...
Gong, Long, Hong and Chen defined the security model of certificateless aggregate signature schemes for the first time. However, there are some weaknesses exist in their model. In this paper, we point out some drawbacks of the security model of Gong et al.'s and present a new one. A certificateless aggregate signature scheme that is provably secure in our model is also presented. The security of our...
We propose a new aggregate signature scheme from bilinear pairings. It requires constant pairing operations in the verification and the size of aggregate signature is independent of the number of signers. In the public key infrastructure (PKI) setting, it is the first aggregate signature scheme with these properties. Hence, it is very practical in the environments with computational power limited...
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