Storing information on the cloud lets users access data quickly. Owners send their files to cloud servers to save money and use helpful tools. Keeping shared data online beyond direct control worries more people about privacy and security. Issues with sharing data in the cloud are a major concern. Several methods can protect user privacy and securely share group information. This paper introduces a secure dynamic way for groups to share and take away access to data using identity-based encryption that can change (R-IBE). A new cloud-based method for sharing data with revocable identity-based encryption (CR-IBE) is suggested. It allows stopping user access. The proposed method is compared to existing attribute-based encryption schemes for how long they take to run and decode. Tests show the proposed method provides better protection and privacy.