Multi authority Ciphertext-Policy Attribute-Based encryption for security enhancement in cloud storage unit

Multi Authority Ciphertext-Policy Attribute-Based Encryption (MCP-ABE) can be developed aimed at enabling efficient secure operation in this research. The proposed methodology is developed to achieve two main characteristics such as to avoid multiuser illegal share their private key and provide data owner to access the data and flexibility to change their access policy. The proposed methodology is providing high security of multi authority with different traceable and dynamic policy updating procedure. The proposed method is implemented in Java and analyzed with performance metrices such as key size, computation time and functionality. Compared to traditional cryptographic methods, attribute-based encryption has a number of benefits, including its adaptable and fine-grained control of access. Additionally, it is independent of key sharing and management methods that may protect against security attacks, a method of undermining encryption. The proposed methodology is protecting the users with different conditions such as data protection, fraud prevention, message detection and general attack resistance. To validate the performance of the proposed methodology, it can be contrasted with the conventional methods such as Ciphertext-Policy Attribute-Based Signcryption with Outsourced Designcryption (CP-OABSC) and revocable signature (CP-ABSC) with Ciphertext-Policy Attribute-Based Signcryption With Accountable and Verifiable Outsourced Designcryption (CP-ABSc-AVODs) respectively.