Abstract
The proxy signature schemes allow proxy signers to sign messages on behalf of an original signer, a company, or an organization. Such schemes have been suggested for use in a number of applications, particularly in distributed computing, where delegation of rights is quite common. Many identity-based proxy signature schemes using bilinear pairings have been proposed. But the relative computation cost of the pairing is approximately twenty times higher than that of the scalar multiplication over elliptic curve group. In order to save the running time and the size of the signature, in this letter, we propose an identity-based signature scheme without bilinear pairings. With the running time being saved greatly, our scheme is more practical than the previous related schemes for practical application.
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Acknowledgments
The authors thank the anonymous reviewers and Dr. Guy Pujolle for their valuable comments. This research was supported by the Fundamental Research Funds for the Central Universities under Grants 201275786.
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Debiao, H., Jianhua, C. & Jin, H. An ID-based proxy signature schemes without bilinear pairings. Ann. Telecommun. 66, 657–662 (2011). https://doi.org/10.1007/s12243-011-0244-0
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DOI: https://doi.org/10.1007/s12243-011-0244-0