Encrypt given data using camellia-256-cfb1 cipher algo. Camellia in 256-bit key size with CFB1 mode, encrypting 1 bit at a time, ideal for low-latency encryption. Camellia was developed by Mitsubishi Electric and NTT in the early 2000s as a high-security alternative to AES, with CFB1 offering fine-grained stream encryption. Considered secure for specific use cases but rarely used due to its niche application. Our encryption process prepends the IV string used during the encryption process in the encrypted data so that it can be used during decryption.