Perform secure message signing / verification!

Uses:

Enter a Password to get your unique ID!

Enter a Password+Message, to get an ID+Signature verifying the Message was sent by you.

Enter a Message+ID+Signature to verify if the Signature matches the Message+ID of the sender.

Unless they know your password, no one can produce a correct signature for a message from your ID.

Everything uses secure client-side javascript, so no information leaves your device.

Message:

Password:

ID:

Signature:

Go!

This website uses the Elliptic Curve Digital Signature Algorithm with 256-bit security and Password-Based Key Derivation Function 2. ID QR codes can be scanned to get the ID.

This webapp was made by Ajay Shanker Tripathi, and is released under the BSD 3-Clause license.