Abstract: Since cloud computing offers so many benefits, including widespread adoption and low cost, it plays a significant part in today's information technology. Additionally, it offers several areas for various Internet users and enables rapid data storage and transmission across zones. Cloud users can avoid making expensive investments. Put additional storage and IT infrastructure towards your core business. Due of this, a lot of businesses and organisations have moved their work to the cloud. However, due to privacy and security concerns, many consumers are hesitant to use the cloud. This study uses the multi-level recognition (MSA) and optimisation blowfish algorithm (OBA) to solve the problem and generates useful data. Three steps make up the planning process: MSA, data security, and data recovery. Users of the cloud first saved their data there using a multi-factor authentication system. Data is encrypted using OBA when it is switched off. The binary crow search method is used to carefully choose the keys in order to maintain the system's security. MSA-based information recovery is accomplished following the encryption procedure. This will stop data from being utilised brute force by unauthorised individuals. Python has been used to implement the method's performance, and a demonstration has been conducted.

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