Example
A form with a keygen field:
<form action="demo_keygen.asp" method="get">
Username: <input type="text" name="usr_name">
Encryption: <keygen name="security">
<input type="submit">
</form>
Try it Yourself »
Definition and Usage
The <keygen> tag specifies a key-pair generator field used for forms.
When the form is submitted, the private key is stored locally, and the public key is sent to the server.
Browser Support
The numbers in the table specify the first browser version that fully supports the element.
| Element | |||||
|---|---|---|---|---|---|
| <keygen> | 1.0 | Not supported | 1.0 | 1.2 | 3.0 |
Differences Between HTML 4.01 and HTML5
The <keygen> element is new in HTML5.
Attributes
= New in HTML5.
| Attribute | Value | Description |
|---|---|---|
| autofocus | autofocus | Specifies that a <keygen> element should automatically get focus when the page loads |
| challenge | challenge | Specifies that the value of the <keygen> element should be challenged when submitted |
| disabled | disabled | Specifies that a <keygen> element should be disabled |
| form | form_id | Specifies one or more forms the <keygen> element belongs to |
| keytype | rsa dsa ec |
Specifies the security algorithm of the key |
| name | name | Defines a name for the <keygen> element |
Global Attributes
The <keygen> tag also supports the Global Attributes in HTML.
Event Attributes
The <keygen> tag also supports the Event Attributes in HTML.
Related Pages
HTML DOM reference: Keygen Object
Default CSS Settings
None.