About Blowfish Encryption Tool
Blowfish is a symmetric-key block cipher designed in 1993 by Bruce Schneier and included in a large number of cipher suites and encryption products. AES now receives more attention. IV: The Initialization Vector should be 8 bytes long. If not entered, it will default to 8 null bytes.
Input: text. Output: text.
Format reference: Blowfish Encrypt background and specification
Example
Use “Try example” to load this public sample and its settings, then run it.
Settings used in this example
| Parameter | Example value | Input and choices |
|---|---|---|
| Key | {"option":"Hex","string":"0011223344556677"} | Key/text encoding: Hex, UTF8, Latin1, Base64 |
| IV | {"option":"Hex","string":"ffeeddccbbaa9988"} | Key/text encoding: Hex, UTF8, Latin1, Base64 |
| Mode | CFB | CBC, CFB, OFB, CTR, ECB |
| Input | Raw | Raw, Hex |
| Output | Hex | Hex, Raw |
Sample keys and passwords are public. Never use them to protect real data.
Input
The quick brown fox jumps over the lazy dog.
Result
c8ca123592570c1fcb138d4ec08f7af14ad49363245be1ac25029c8ffc508b3217e75faaa5566426180fec8f
Parameters
| Parameter | Default value | Input and choices |
|---|---|---|
| Key | {"option":"Hex","string":""} | Key/text encoding: Hex, UTF8, Latin1, Base64 |
| IV | {"option":"Hex","string":""} | Key/text encoding: Hex, UTF8, Latin1, Base64 |
| Mode | CBC | CBC, CFB, OFB, CTR, ECB |
| Input | Raw | Raw, Hex |
| Output | Hex | Hex, Raw |
Before interpreting the result
Use the exact key encoding, mode, padding and IV expected by the source system. Historical ciphers are useful for learning and analysis. Encoding alone provides no confidentiality.
How to use this page
- Paste your input or open a local file.
- Adjust tool options if needed, then choose Run tool.
- Copy the result or download the original output bytes.
Inputs and results are not added to the public catalogue or saved in the URL. Processing happens in your browser; HTTP Request and DNS over HTTPS send the requests you explicitly run. Files up to 128 MiB can be opened; decompression and image tools may have smaller processing limits. Large results have a shortened preview. Text and HTML downloads use UTF-8; binary downloads preserve output bytes. Pasted text follows browser newline handling; open a file when exact input bytes matter.