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Blowfish Cipher

v1.0.0

Encrypt and decrypt data using the Blowfish symmetric block cipher with variable-length keys

Browser-based Blowfish Cipher. All operations run locally — no data is sent to a server.

How to use
  • Enter your input data and configure the operation settings.
  • Click Run to compute the result.
  • Use the Copy button to copy the output.
  • Try a preset from the example picker to see sample input.
Output
Blowfish — 64-bit block cipher with variable key length (32–448 bits). Designed by Bruce Schneier in 1993.
Plaintext
Ciphertext