Efficient Revocable Attribute-Based Encryption with Hidden Policies
| Autor: | Dominik Ziegler, Alexander Marsalek |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Scheme (programming language)
021110 strategic defence & security studies Revocation business.industry Computer science Distributed computing 0211 other engineering and technologies Access control Cryptography 02 engineering and technology Dynamic priority scheduling Encryption Composite order 0202 electrical engineering electronic engineering information engineering 020201 artificial intelligence & image processing Attribute-based encryption business computer computer.programming_language |
| Zdroj: | TrustCom |
| DOI: | 10.1109/trustcom50675.2020.00226 |
| Popis: | We present a novel Ciphertext-Policy Attribute-Based Encryption (CP-ABE) scheme, which bridges the gap between highly dynamic (industrial) environments and resource-constrained devices. Our construction combines outsourced-decryption, hidden policies and revocation to cope with the requirements posed by such environments. In contrast to existing schemes, which typically rely on composite order bilinear groups, we present a scheme in prime order groups. The resulting scheme is more efficient as it relies on smaller group orders. We prove our scheme is secure under the Symmetric External Diffie-Hellman (SXDH) assumption. Lastly, we compare our scheme against existing schemes and provide timing results of our software implementation. Our evaluation shows that the proposed scheme is flexible enough for the targeted environment while improving performance by an order of magnitude. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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