How to use: XOR Cipher
XOR Cipher is a free online Cryptography Tools tool that encrypt or decrypt bytes with a repeating XOR key instantly in your browser. Paste your data, adjust the options and get the result in real time — no installation, no sign-up, and nothing is ever uploaded to a server.
How to use
Using XOR Cipher takes three steps:
- Paste your data into the input box (or load the example).
- Configure the options to match your target format or scenario.
- Copy, download or inspect the output — it updates live as you type.
Description
Encrypt or decrypt bytes with a repeating XOR key.
Because everything is computed client-side, XOR Cipher is safe to use with sensitive data such as API keys, tokens or private logs.
Run
These ready-made examples show typical inputs and the exact output XOR Cipher produces for them.
Examples
Key: SECRET.
Attack at dawn
Use cases
Common situations where XOR Cipher helps:
- Encrypt or decrypt bytes with a repeating XOR key.
- Because everything is computed client-side, XOR Cipher is safe to use with sensitive data such as API keys, tokens or private logs.
FAQ
What is XOR Cipher?
XOR Cipher encrypt or decrypt bytes with a repeating XOR key. It runs entirely in your browser, so your data stays private.
Is XOR Cipher free to use?
Yes. XOR Cipher is free, unlimited and works without registration or installation.
Does my data get uploaded?
No. All processing happens locally in your browser; nothing is sent to any server.