Decrypt given data previously encoded with bf cipher algo. Blowfish is a symmetric key block cipher with a variable key length from 32 bits to 448 bits. Designed by Bruce Schneier in 1993 as a fast, compact alternative to existing encryption algorithms. Considered somewhat insecure for modern use due to small block size (64-bit), but still widely used in legacy systems. 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.