Efficient Offline/Online Attribute Based Encryption with Verifiable Outsourced Decryption

Zhiyuan ZHAO; Lei SUN; Jiafu HU; Shie ZHOU

doi:10.11999/JEIT180122

Volume 40 Issue 12

Nov. 2018

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Zhiyuan ZHAO, Lei SUN, Jiafu HU, Shie ZHOU. Efficient Offline/Online Attribute Based Encryption with Verifiable Outsourced Decryption[J]. Journal of Electronics & Information Technology, 2018, 40(12): 2998-3006. doi: 10.11999/JEIT180122

Citation:

Zhiyuan ZHAO, Lei SUN, Jiafu HU, Shie ZHOU. Efficient Offline/Online Attribute Based Encryption with Verifiable Outsourced Decryption[J]. Journal of Electronics & Information Technology, 2018, 40(12): 2998-3006. doi: 10.11999/JEIT180122

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Efficient Offline/Online Attribute Based Encryption with Verifiable Outsourced Decryption

doi: 10.11999/JEIT180122

The Third Institute, Information Engineering University, Zhengzhou 450001, China

Funds: The National 973 Program of China (2013CB338000), The National Key Research Program of China (2016YFB0501900)

Received Date: 2018-01-29
Rev Recd Date: 2018-06-11

Available Online: 2018-08-30

Publish Date: 2018-12-01

Abstract

Abstract

Attribute based encryption can provide data confidentiality protection and fine-grained access control for fog-cloud computing, however mobile devices in fog cloud computing system are difficult to bear the burdensome computing burden of attribute based encryption. In order to address this problem, an offline/online ciphertext-plicy attribute-based encryption scheme is presented with verifiable outsourced decryption based on the bilinear group of prime order. It can realize the offline/online key generation and data encryption. Simultaneously, it supports the verifiable outsourced decryption. Then, the formal security proofs of its selective chosen plaintext attack security and verifiability are provided. After that, the improved offline/online ciphertext-plicy attribute-based encryption scheme with verifiable outsourced decryption is presented, which reduces the number of bilinear pairings from linear to constant in the transformation phase. Finally, the efficiency of the proposed scheme is analyzed and verified through theoretical analysis and experimental simulation. The experimental results show that the proposed scheme is efficient and practical.
- Attributed-based encryption,
- Offline/online,
- Outsourced decryption,
- Verifiability

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References(18)

References

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