Blowfish Decryption

This tool allows you to decrypt text that was encrypted using the Blowfish algorithm in a straightforward way. It is designed for users who need to access legacy Blowfish data without unnecessary complexity. Use a modern authenticated mode for new designs.

1. Enter the encrypted data (text, JSON, XML, etc.) in the left text area.
2. Provide the passphrase used during the encryption process.
3. Click the "Decrypt" button.
4. The decrypted result will appear in the right text area.

Blowfish is a symmetric-key block cipher designed by Bruce Schneier. It operates on 64-bit blocks and supports key lengths from 32 to 448 bits. Known for its speed and effectiveness, Blowfish is widely used in many security applications.

This page exists to recover output from the matching package, with these limits:

• Exact format required: other Blowfish modes, encodings, and key-derivation recipes may not work.
• No authentication result: recovered text is not proof that the ciphertext was unchanged.
• Legacy use: use a modern authenticated mode for new designs.

Blowfish decryption only works for compatible encrypted data and its passphrase. Hashes have no decryption key; candidate inputs are verified by hashing and comparison. If you are working with hashes, use tools like Bcrypt Verify or SHA-256 instead.

To encrypt data, use the Blowfish Encrypt Tool.

The Blowfish Decryption Tool is versatile and can handle various types of input, such as:

• Plain text
• Strings (including sensitive information)
• JSON and YAML
• XML files
• Configuration and log files
• Source code snippets

The recovered content type does not change the compatibility limits above. Review the result before using it.

If you prefer to encode your data rather than decrypt it, try our Base64 Encode tool.