The <keygen> element

This is a legacy/obsolete element. It's no longer defined in the specification, and using it will make your HTML invalid.

Short for ‘Key Generator’. Generates a cryptographic key pair. The public key is submitted as part of the form data, while the private key is kept in the browser's private key store.

This is an empty element, so it shouldn't have a closing tag.

Full list of attributes

All the usual HTML global attributes are available

autofocus

If present, this element should be given keyboard focus when the page first loads.

challenge

A piece of text to package up in the public key submitted with the rest of the form.

disabled

Prevents the control from being manipulated or from including its public key in the submitted form data.

form

The <form> element with which this key generator is associated.

keytype

The name of a method for creating private/public key pairs. Different browsers might support different methods, and there's no guarantee that any particular browser will support any at all. The default, if it's supported, is rsa.

name

The name used for the public key data in the form submission.