Encrypt given data using camellia-128-ecb cipher algo. Camellia in 128-bit key size with ECB (Electronic Codebook) mode, where each block is encrypted independently. Camellia was developed by Mitsubishi Electric and NTT as an AES alternative and includes ECB as one of its modes. ECB mode is less secure because repeated plaintext blocks result in identical ciphertext blocks. Camellia is secure, but ECB is not recommended for general use. Our encryption process prepends the IV string used during the encryption process in the encrypted data so that it can be used during decryption.