N/ui/serverWidget Module
Form.addSecretKeyField()
Method Description: Adds a secret key field to the form. This key can be used in crypto modules to perform encryption or hashing. The default maximum length for a secret key field is 32 characters. If needed, use the Field.maxLength property to change this value.
Returns: serverWidget.Field object
Supported Script Types: SuiteScript 2.0 Suitelet Script Type and SuiteScript 2.0 User Event Script Type (beforeLoad(scriptContext))
Governance: None
Module: N/ui/serverWidget Module
Since: 2016.1
Search NetSuite - https://system.netsuite.com/app/help/helpcenter.nl?search=Form.addSecretKeyField(options)

// Code Example 1

//Add additional code

//...

var form = serverWidget.createForm({

    title : 'Simple Form'

});

skField = form.addSecretKeyField({

    id : 'password',

    restrictToScriptIds : 'customscript_my_script',

    label : 'Password',

    restrictToCurrentUser : false

});

skField.maxLength = 64;

//...

//Add additional code



//SOURCE: https://system.netsuite.com/app/help/helpcenter.nl?fid=section_4550325064.html