Class: U2fRegistration

Inherits:
ApplicationRecord show all
Defined in:
app/models/u2f_registration.rb

Overview

Registration information for U2F (universal 2nd factor) devices, like Yubikeys

Class Method Summary collapse

Methods inherited from ApplicationRecord

at_most, id_in, id_not_in, iid_in, pluck_primary_key, primary_key_in, safe_ensure_unique, safe_find_or_create_by, safe_find_or_create_by!, underscore, without_order

Class Method Details

.authenticate(user, app_id, json_response, challenges) ⇒ Object 


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# File 'app/models/u2f_registration.rb', line 30

def self.authenticate(user, app_id, json_response, challenges)
  response = U2F::SignResponse.load_from_json(json_response)
  registration = user.u2f_registrations.find_by_key_handle(response.key_handle)
  u2f = U2F::U2F.new(app_id)

  if registration
    u2f.authenticate!(challenges, response, Base64.decode64(registration.public_key), registration.counter)
    registration.update(counter: response.counter)
    true
  end
rescue JSON::ParserError, NoMethodError, ArgumentError, U2F::Error
  false
end

.register(user, app_id, params, challenges) ⇒ Object 


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# File 'app/models/u2f_registration.rb', line 8

def self.register(user, app_id, params, challenges)
  u2f = U2F::U2F.new(app_id)
  registration = self.new

  begin
    response = U2F::RegisterResponse.load_from_json(params[:device_response])
    registration_data = u2f.register!(challenges, response)
    registration.update(certificate: registration_data.certificate,
                        key_handle: registration_data.key_handle,
                        public_key: registration_data.public_key,
                        counter: registration_data.counter,
                        user: user,
                        name: params[:name])
  rescue JSON::ParserError, NoMethodError, ArgumentError
    registration.errors.add(:base, _('Your U2F device did not send a valid JSON response.'))
  rescue U2F::Error => e
    registration.errors.add(:base, e.message)
  end

  registration
end