With the rise of cloud computing technology, enterprises are starting to embrace new business models. In those business models, the primary consideration for customers and service providers is the security of data in the cloud environment. In order to ensure the data security, we must build a comprehensive mechanism to ensure data integrity, confidentiality and availability. This paper introduces and discusses how to adopt the OAuth (Open Authorization) protocol along with Data Validation and Certification Service to protect the data in the cloud computing environment. This technology allows the Data Validation and Certification Service to access protected resources stored in the cloud storage, and then generates evidence of non-repudiation for the protected resources. With this mechanism, Data Validation and Certification Service can provide data Integrity, confidentiality and availability in the cloud environment.