Bayes Certificateless Signcryption Based Secured Data Integrity for Cloud Service Provisioning

摘要

Large amount of sensitive data is shared to other cloud users in cloud computing environment. To maintain data integrity, security, confidentiality, the data owners encrypt their data before transmission. However, the existing encryption techniques do not provide more security and data integrity rate. In order to overcome such limitations, Bayes Certificateless Signcryption Based Data Integrity (BCS-DI) technique is proposed. It is designed with the objective of improving the security of cloud service provisioning with higher data integrity rate. At first, the cloud users send data request to cloud server. Then, the cloud server analyzes the user request and provides required data. Before transmitting the data to corresponding users, Certificateless Signcryption is used to encrypt the user required data to be transmitted over a cloud network with sender private key which resulting in cipher text. This cipher text is send to the appropriate cloud user in cloud computing environment. Finally, digital signature verification process is carried out at the receiver side to access the original data by using Bayes theorem. The authorized cloud receiver can only obtain the original data when the signature of both sender and receiver is valid. This helps for BCS-DI technique to improve the security and data integrity rate. This technique conducts the experimental works on the parameters such as data security rate, execution time, memory utilization and data integrity rate. The experimental result shows that the BCS-DI technique is able to improve the data security rate and integrity rate of cloud service provisioning.