Blowfish Encryption

Blowfish is a symmetric-key block cipher designed by Bruce Schneier in 1993.

Key Generation

Generate a secure key and initialization vector (IV) for Blowfish encryption

Encrypt File

Upload a file and encrypt it with Blowfish

Decrypt File

Upload an encrypted file and decrypt it with Blowfish

About Blowfish Encryption

Blowfish is a symmetric-key block cipher designed by Bruce Schneier in 1993. It has a 64-bit block size and a variable key length from 32 bits up to 448 bits.

  • Blowfish is known for its exceptional speed and effectiveness.
  • It's a 16-round Feistel cipher and uses large key-dependent S-boxes.
  • The algorithm is in the public domain, making it freely available for anyone to use.
  • Blowfish is notable for its slow key setup time, which is a security feature that helps protect against brute force attacks.
Key Features:
  • Variable Key Length: Blowfish supports key sizes from 32 bits to 448 bits, making it flexible for different security requirements.
  • Simple Structure: The algorithm consists of only a few simple operations, making it easy to implement.
  • Security: Despite its age, Blowfish has withstood years of cryptanalysis and is still considered secure for most applications.
  • Performance: Blowfish is optimized for 32-bit processors and is significantly faster than DES.
Note: While Blowfish is still secure, for new applications, Bruce Schneier (the creator of Blowfish) recommends using the Twofish algorithm instead, which was designed as a successor to Blowfish.