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Journal of Shanghai Jiaotong University(Science) >

2011 , Vol. 16 >Issue 6: 672 - 676

DOI: https://doi.org/10.1007/s12204-011-1209-1

Articles

Chosen Ciphertext Secure Identity-Based Broadcast Encryption in the Standard Model

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  • (1. Key Laboratory of Computer Network and Information Security, Xidian
    University, Xi'an 710071, China;
    2. Department of Application Mathematics, Xi'an University of Technology,
    Xi'an 710048, China)    

Received date: 2010-03-28

  Online published: 2012-01-12

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Abstract

 To give concurrent consideration both
the efficiency and the security (intensity of intractable problem)
in the standard model, a chosen ciphertext secure identity-based
broadcast encryption is proposed. Against the chosen ciphertext
security model, by using identity (ID) sequence and adding
additional information in ciphertext, the self-adaptive chosen
identity security (the full security) and the chosen ciphertext
security are gained simultaneously. The reduction of scheme's
security is the decisional bilinear Diffie-Hellman (BDH) intractable
assumption, and the proof of security shows that the proposed scheme
is indistinguishable against adaptive chosen ciphertext attacks in
the standard model under the decisional BDH intractable assumption.
So the security level is improved，and it is suitable for higher
security environment.

Key words： the standard model; provably secure; broadcast encryption;
the chosen ciphertext security; the self-adaptive chosen identity security

Cite this article

SUN Jin (孙 瑾), HU Yu-pu (胡予濮), ZHANG Le-you (张乐友) . Chosen Ciphertext Secure Identity-Based Broadcast Encryption in the Standard Model[J]. Journal of Shanghai Jiaotong University(Science), 2011 , 16(6) : 672 -676 . DOI: 10.1007/s12204-011-1209-1

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