Decrypt given data previously encoded with bf-cfb cipher algo. Blowfish in CFB (Cipher Feedback) mode. CFB mode allows encryption of smaller data units, making it suitable for stream-like encryption. Developed by Bruce Schneier in 1993 as part of Blowfish, CFB mode is an improvement to the original ECB mode, providing better security for variable-length data. Similar to CBC, Blowfish in CFB is secure, but the 64-bit block size limits its long-term effectiveness against modern attacks. 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.