I did something similar where a person would enter user, password, and OTP from the duo app on a phone to be logged in. To give you an idea of the scope of the customizations required (with CAS 3.4.x):
new AuthHandler (does the duo API calls), Credentials, CredToPrincResolver classes. Then modified the css, js, messages_en.properties, login webflow, and login jsps appropriately. -- You are currently subscribed to [email protected] as: [email protected] To unsubscribe, change settings or access archives, see http://www.ja-sig.org/wiki/display/JSG/cas-dev
