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Forward-Secure Identity-based Broadcast Encryption Scheme from Lattice |
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PP: 1993-2000 |
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Author(s) |
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Xinwen Zhang,
Shangping Wang,
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Abstract |
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Motivated by an identity-based broadcast encryption scheme from lattice[1] and a forward-secure identity-based encryption
scheme[2], we propose a forward-secure identity-based broadcast encryption scheme from lattice by adding the forward-security
mechanism on broadcast encryption scheme. Our scheme satisfies the security requirements of both the broadcast encryption scheme
and forward-security scheme, that is, it is forward-secure for the secret keys used previously, and we prove that it is semantic secure
based on LWE (Learning With Error)assumption[3] in the random oracle model. In addition, our construction is believed to be secure
against quantum computer. |
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