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Adaptable key-policy attribute-based encryption with time interval
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DOI：10.1007/s00500-016-2177-z.png)
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In this paper, we introduce a new cryptographic primitive: adaptable KP-ABE with time interval (KP-TIABE), which is an extension of key-policy attribute-based encryption (KP-ABE). Adaptable KP-TIABE specifies a decryption time interval for every ciphertext such that the ciphertext can only be decrypted within this time interval. To be more flexible, the decryption time interval associated with a ciphertext can be adjusted on demand by a semi-trusted server. We propose a formal model for adaptable KP-TIABE, present a concrete adaptable KP-TIABE scheme and prove its security under the security model.
Keyword:
Adaptable key-policy attribute-based encryption
Time specific
Adaptability
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IF:
2.5
论文数:
1.0W
被引数:
2.1W
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