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Revisiting Attribute-Based Encryption with Verifiable Outsourced Decryption

Revisiting Attribute-Based Encryption with Verifiable Outsourced Decryption

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Revisiting Attribute-Based Encryption with Verifiable Outsourced Decryption

 Attribute-based encryption (ABE) [1] is a promising technique for fine-grained access control of encrypted data in a cloud storage, however, decryption involved in ABEs is usually too expensive for resource-constrained front-end users, which greatly hinders its practical popularity. In order to reduce the decryption overhead for a user to recover the plaintext, Green et al. [2] suggested to outsource the majority of the decryption work without revealing actually data or private keys. To ensure the third-party service honestly computes the outsourced work, Lai et al. provided a requirement of verifiability to the decryption of ABE [3], but their scheme doubled the size of the underlying ABE cipher text and the computation costs. Roughly speaking, their main idea is to use a parallel encryption technique, while one of the encryption components is used for the verification purpose. Hence the bandwidth and the computation cost are doubled. In this paper, we investigate the same problem.


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  • Model: PROJ5091
  • 999 Units in Stock
  • Manufactured by: ClickMyProjects

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This product was added to our catalog on Thursday 08 September, 2016.