Decrypt given data previously encoded with 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 decryption process assumes the IV string is prepended in the encoded string during the encryption process. You can not decrypt and get the correct results if the IV or passphrase mismatch occurs between encryption and decryption process.