Module: ActiveMerchant::Billing::Integrations::Dwolla::Common

Included in:
Notification, Return
Defined in:
lib/active_merchant/billing/integrations/dwolla/common.rb

Instance Method Summary collapse

Instance Method Details

#verify_signature(checkoutId, amount, notification_signature, secret) ⇒ Object 



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# File 'lib/active_merchant/billing/integrations/dwolla/common.rb', line 6

def verify_signature(checkoutId, amount, notification_signature, secret)
  if secret.nil?
    raise ArgumentError, "You need to provide the Application secret as the option :credential3 to verify that the notification originated from Dwolla"
  end

  expected_signature = Digest::SHA1.hexdigest(secret + ('%s&%.2f' % [checkoutId, amount]))

  if notification_signature != expected_signature
    raise StandardError, "Dwolla signature verification failed."
  end
end