SHARE-ABE: an efficient and secure data sharing framework based on ciphertext-policy attribute-based encryption and Fog computing

A secure multi‐authority attribute based encryption approach for robust smart grids

“…These children are numerated arbitrarily from 1 to num x . 23 Access policy with fake attribute: In the context of Ciphertext-Policy Attribute-Based Encryption (CP-ABE), it is observed that the access policy is transmitted in an unencrypted form with the ciphertext. An unauthorized user can access confidential information by exploiting the access policy, compromising sensitive data such as social security numbers, names, and other pertinent details.…”

“…In the following subsections, we compare our approach with existing methods at three levels: Encryption Computation Costs at the Data Owner Level, Computation Costs at the End-user Level, and Computation Costs at the Fog Level. By examining these aspects, we aim to show the efficiency and effectiveness of our proposed approach in comparison to established methods, namely Li et al, 20,21 Wu et al 26 and Saidi et al 23…”

“…Experimental results show that our cryptosystem's execution time better than References 20 and 26 but is slightly higher than the the other approaches. 21,23 This can be attributed to the inclusion of false attributes in our approach, which demands additional processing resources. Our approach outperforms other approaches in the decryption process Also, we show in Figures 6, 7 and 8 the decryption performance by using different percentages of false attributes.…”

“…In Reference 23, the authors proposed Share‐abe, an efficient and secure data‐sharing framework based on ciphertext‐policy attribute‐based encryption and Fog computing. The access policy conceals the attributes, while the decryption procedure is delegated to the fog nodes according to the attributes under their management.…”

“…It involves tasks performed by the user's device, such as data encryption and running specific algorithms. Our approach only needs one exponentiations in E2 compared to 2E2, 4E2, 3E2 + e, and 8E2 for References 20, 21, 26, and 23 respectively.…”