Abstract: These days, cloud computing has emerged as the greatest way for customers and different IT enterprises to solve space-related problems. The user might consider the data's privacy and genuine integrity. The existing cryptographic approaches can be used to improve cloud computing data security. This study suggested a hybrid cryptography method based on hash functions and visual cryptography techniques for cloud data storage security. The user computes the hash value or hash digest of the file before uploading it to the cloud for storage. On the cloud side, the data is stored and encrypted. The integrity of the data has been preserved if both hash values are the same. The MATLAB 8.3 program is used to carry out the simulation.

Keywords: Hash, VCS, Hybrid, Data, Cryptography, Security, Cloud, IOT, Server etc.

| DOI: 10.17148/IARJSET.2025.12629