This paper investigated the application of a powerful method for eliminating similar data in a multi-cloud setting. It is obvious that using a private cloud as a middleman to find duplicate data is a secure method. Our approach to data sharing and storage ensures that access to the data on the public cloud is restricted to authorized users only. Data stored on the public cloud is neither encrypted or secure because of the outdated technology used.Our creative and reliable convergent key technology allows redundant data to be safely removed in a multicloud environment, which effectively tackles these challenges. Cloud servers that are open to the public house private cryptographic keys and sensitive personal information.Using this method, you can successfully remove files that are no longer needed, freeing up storage and internet space.

Public Cloud, Convergent Key Encryption, File level Check, Block Level Check, Convergent key.