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Paper 2021/003
Ciphertext Policy Attribute Based Encryption for Arithmetic circuits
Mahdi Mahdavi Oliaee and Zahra Ahmadian
Abstract
We present the first Ciphertext Policy Attribute Based Encryption (CP-ABE) scheme where access policies are expressed as arithmetic circuits. The idea is first introduced as a basic design based on the multilinear map. Then, two improved versions of that, with or without the property of hidden attributes, are introduced. We also define the concept of Hidden Result Attribute Based Encryption (HR-ABE) which means that the result of the arithmetic function is hidden from the users. We prove that the proposed schemes have adaptive security, under the assumption of the hardness of the (k-1)-Distance Decisional Diffie- Hellman problem.
Metadata
- Available format(s)
- Category
- Public-key cryptography
- Publication info
- Preprint. MINOR revision.
- Keywords
- Arithmetic circuitMultilinear mapAdaptive securityHidden attributesHidden Result
- Contact author(s)
- zahraahmadian @ yahoo com
- History
- 2022-03-02: last of 7 revisions
- 2021-01-02: received
- See all versions
- Short URL
- https://ia.cr/2021/003
- License
-
CC BY