Collaborative Multi-Authority KP-ABE for Shorter Keys and Parameters
نویسندگان
چکیده
Bilinear groups are often used to create Attribute-Based Encryption (ABE) algorithms. In our proposal, a Multiple-Authorities Key-Policy Attribute-Based Encryption scheme is constructed in which the authorities collaborate to achieve shorter keys and parameters, enhancing the efficiency of encryption and decryption. We prove our system secure under an original variation of the bilinear DiffieHellman assumption, we also show its relation with other similar assumptions.
منابع مشابه
Key-Policy Multi-authority Attribute-Based Encryption
Bilinear groups are often used to create Attribute-Based Encryption (ABE) algorithms. In particular, they have been used to create an ABE system with multi authorities, but limited to the ciphertext-policy instance. Here, for the first time, we propose two multi-authority key-policy ABE systems. In our first proposal, the authorities may be set up in any moment and without any coordination. A p...
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عنوان ژورنال:
- IACR Cryptology ePrint Archive
دوره 2016 شماره
صفحات -
تاریخ انتشار 2016