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Erschienen in:
2010 | OriginalPaper | Buchkapitel
Ciphertext Policy Attribute-Based Proxy Re-encryption
verfasst von : Song Luo, Jianbin Hu, Zhong Chen
Erschienen in: Information and Communications Security
Verlag: Springer Berlin Heidelberg
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We present a novel ciphertext policy attribute-based proxy re-encryption (CP-AB-PRE) scheme. The ciphertext policy realized in our scheme is AND-gates policy supporting multi-value attributes, negative attributes and wildcards. Our scheme satisfies the properties of PRE, such as unidirectionality, non-interactivity and multi-use. Moreover, the proposed scheme has master key security, allows the encryptor to decide whether the ciphertext can be re-encrypted and allows the proxy to add access policy when re-encrypting ciphertext. Furthermore, our scheme can be modified to have constant ciphertext size in original encryption.