Blowfish Encryption/Decryption

Online Blowfish encryption/decryption tool supporting variable key lengths (32-448 bits) and CBC/ECB/CFB/OFB modes.

Security Notice

Blowfish's 64-bit block size may be vulnerable to birthday attacks when encrypting large amounts of data. For new projects requiring maximum security, AES-256 is recommended.

Encryption Mode

Padding

Blowfish key length: 4-56 bytes (32-448 bits). Recommended: 16 bytes (128 bits) or longer

Key

IV (Initialization Vector)

Format Options

Plaintext Input Format

Ciphertext Output Format

Input

Documentation

This tool performs local Blowfish encryption/decryption with common modes and paddings, useful for legacy compatibility and education.

Key Features

Blowfish text encryption/decryption
CBC, ECB, CFB, and OFB modes
Multiple input/output formats
Custom key and IV inputs

Steps

Choose encrypt or decrypt mode.
Configure mode, padding, and key settings.
Enter plaintext or ciphertext.
Process and copy the output.

Notes

Blowfish uses 64-bit blocks and is less ideal for new large-scale systems.
Prefer modern 128-bit block ciphers such as AES for new projects.
Avoid short keys and ECB mode when possible.

Related Tools

Documentation

Key Features

Steps

Notes