Encrypt given data using camellia256 cipher algo. Camellia with a 256-bit key size, providing maximum encryption strength within the Camellia family. The 256-bit version of Camellia is designed to meet high-security standards in modern cryptographic applications, offering the highest level of security. Camellia-256 is extremely secure and widely trusted in high-security environments, often used in scenarios requiring the highest levels of protection. Our encryption process prepends the IV string used during the encryption process in the encrypted data so that it can be used during decryption.