Abstract
The technological advancement in the field of IoT and cloud computing along with the use of handheld gadgets generate huge amount of data. To process and share these data with fine-grained access control while maintaining confidentiality using cloud servers is a challenging task. Individuals as well as the organizations apprehend to use public cloud to share their private data due to security issues. Ciphertext-policy-attribute-based-encryption(CPABE) achieves one-to-many encryption with data confidentiality and fine-grained access control. Due to the computational intensive operations of encryption and decryption the performance of CPABE as a solution in resource-constraint environment is not encouraging enough. Some of the existing models use the resources of cloud servers to carry out outsourced computation either with compromised security or with communication-overhead. To reduce the computational time of encryption and decryption we propose a scheme LIKC which incorporates the outsourcing mechanism using a proxy server. With the imploration the computation time get reduced without compromising the security. It also supports attribute-revocation to support flexible data sharing. The proposed model is implemented using python charm crypto. The output reveals that LIKC is able to produce promising results in comparison to the data sharing models for this study.
Published Version
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