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Conference Publication

Pairing free and implicit certificate based signcryption scheme with proxy re-encryption for secure cloud data storage

Host Publication: 3rd International Conference of Cloud Computing Technologies and Applications

Authors: A. Braeken, P. Shabisha, A. Touhafi and K. Steenhaut

Publisher: IEEE Xplore

Publication Date: Oct. 2017

Number of Pages: 8


Abstract:

Data storage in cloud computing leads to several security issues such as data privacy, integrity, and authentication. Efficiency for the user to upload and download the data in a secure way plays an important role, as users are nowadays performing these actions on all types of devices, including e.g. smartphones. Signing and encryption of the sensitive data before hosting can solve potential security breaches. In this paper, we propose a highly efficient identity based signcryption scheme and add a proxy re-encryption feature to it. This allows users to store signed and encrypted data in the cloud, where the cloud server provider is able to check the authentication but not to derive the content of the message. When another user requests data access, the originator of the message first checks the authorization and then provides the cloud server an encryption key to re-encrypt the stored data, enabling the requesting party to decrypt the resulting ciphertext and to validate the signature. The proposed scheme is based on elliptic curve operations and does not use compute intensive pairing operations, like previous proposals.

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Mr. Abdellah Touhafi

+32 (0)02 629 377

atouhafi@etrovub.be

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Prof. Dr. Ir. Kris Steenhaut

+32 (0)02 629 297

ksteenha@etrovub.be

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