完全安全的基于属性的广播加密方案

doi:10.3969/j.issn.1001-2400.2012.04.005

Abstract

Abstract:

According to the broadcast encryption scheme with wide applications in the real world but to the fact that its security and efficiency can not be taken into consideration in the model simultaneously, a fully secure attribute-based broadcast encryption scheme is proposed by combining Waters dual system encryption and attribute-based cryptography. Based on the standard model, by using the orthogonality property of composite-order bilinear groups and the attribute vector, the scheme can achieve constant-size ciphertext which constrains four group exponents. The scheme is proved by using three static assumptions which do not depend on the number of queries the attacker makes. Furthermore, the analytical results indicate that the scheme of this paper is fully secure and can satisfy the higher efficiency and practical requirement.

Key words: dual system encryption, attribute-based cryptography, broadcast encryption, provably secure

CLC Number:

TN918.1

SUN Jin;HU Yupu. Fully secure attribute-based broadcast encryption[J].J4, 2012, 39(4): 23-28+154.

References

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Fully secure attribute-based broadcast encryption

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