HTML <keygen> tag
When writing in HTML (HyperText Markup Language), the <keygen> tag designates a key-pair generator field used within <form> tags. Upon submission, the public key is sent to the server while the private key is stored locally. They are useful for adding security to forms. The following sections contain information about the <keygen> tag, including an example of it in use, and related attributes and browser compatibility.
The <keygen> tag belongs to a group of tags called form elements.
Example of <keygen> code
<form>
Username: <input type="text" name="uname"><br>
Encryption: <keygen name="secure">
<input type="submit">
</form>
Example result
Attributes
All HTML tags support standard attributes that define the settings of an HTML element. In addition to the standard settings, the <keygen> tag has the following unique attributes.
Attribute | Description |
---|---|
autofocus | Designates that an <keygen> element should be the first thing focused when the page loads. |
challenge | Designates that the value of the <keygen> element should be double checked upon submission. |
disabled | Designates that the <keygen> element is disabled. |
form | Designates the form(s) containing the <keygen> element. |
keytype | Designates the security algorithm to be used with the key. |
name | Designates a name for the <keygen> element. |
Compatibility
Edge | Internet Explorer | Firefox | Safari | Opera | Chrome |
---|---|---|---|---|---|
All versions | Not supported | 1.0+ | 1.2+ | 3.0+ | 1.0+ |
Additional form elements
- <button>
- <datalist>
- <fieldset>
- <input>
- <label>
- <legend>
- <optgroup>
- <option>
- <output>
- <select>
- <textarea>
Authentication, Browser, Compatibility, Form, Nesting, Public key, URL, Web design terms