A Secure Model and Algorithms for Cloud Computing Based on Multicloud Service Providers
Ashutosh Satapathy, J. Chandrakanta Badajena, Chinmayee Rout · 2013
In modern computing environment, using cloud computing mechanism, cloud service provider provides its internal storages for storing client's data and installing firewall, ips/ids to protect against attacks. To achieve data privacy protection one common method used is storage of data in encrypted format. If a cloud service provider is responsible for all services (authentication, encryption/decryption, storage and auditing) then high level administrators may obtain user id, password, encrypted data and decryption keys which cause a risk for the unauthorized disclosure of the user data. This model proposes a secure cloud computing model based on separating the storage service from authentication, encryption/ decryption and auditing services. In addition, the party operates on storage must store encrypted data and the party operates on authentication, encryption/ decryption and auditing services must delete all data upon computation complete i.e. One cloud service provider is responsible for storage and the other one is responsible for authentication, encryption/ decryption and auditing services. At last the cloud service providers should sign multi-party service level agreement to establish cooperation model for providing common services to clients. Keywords-cloud computing, service level agreements, authentication service, encryption, decryption, audit service, data privacy