Fully Homomorphic Encryption (FHE) is an advanced encryption method that allows computations to be performed on encrypted data without needing to decrypt it first. This means that sensitive information can be processed while still maintaining privacy and security.In practice, FHE enables users to encrypt data, send it to a server for processing, and receive the results back in an encrypted form. The server can perform various operations, such as addition or multiplication, on this encrypted data without ever accessing the raw information. Only the data owner can decrypt the final result. This technology has significant implications for maintaining privacy in transactions, data analysis, and secure voting systems. It enhances security by reducing the risks associated with data breaches, as encrypted data remains inaccessible even if intercepted during processing. FHE is still in developmental stages due to its computational intensity, but its potential for privacy-preserving applications makes it a promising area in encrypted data processing.