Decrypt given data previously encoded with camellia-256-ofb cipher algo. Camellia in 256-bit key size with OFB mode, converting a block cipher into a stream cipher using a feedback loop. OFB mode is part of Camellia's broad suite of secure modes developed by Mitsubishi Electric and NTT. OFB is secure but may still be susceptible to key reuse and error propagation issues. 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.