Write the key
Choose a secret keyword you can remember.
NGU Machine · Secret-key encryption
NGU Machine: encrypt and decrypt messages from the web
Write a secret key, protect your message and copy or share the result.
NGU Machine is an application created and developed by Xabier Durruti and NGU.
Countdown to launch
June 17, 2026
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Read the NGU Machine introduction
Dedication This website is dedicated to my son. It was born from the difficulties we have communicating. Also from something we share: an interest in physics and quantum mechanics, and in encryption systems.
Image designed by NGU
Write the message
Enter the text you want to protect in the message field.
Encrypt or decrypt
Choose the mode and press the corresponding button.
Copy or share
Send the result and tell the recipient to use the same key.
Web privacy tool
What NGU Machine is
NGU Machine is a web tool for encrypting and decrypting messages with a secret key in the browser. It is designed for sharing texts in a more private way without creating accounts, without installing software and with a simple flow to copy or share the result.
The project is developed by Xabier Durruti and NGU, and was created as a personal tool focused on privacy, communication and an interest in encryption systems.
Usage privacy
You do not need to register. The tool is designed to work directly from the page and help reduce the exposure of what you write.
View NGU Machine privacyMore context
Besides using the tool, you can read the project introduction and discover other tools focused on privacy and technical verification.
Read the NGU Machine introduction View hash verifier