Official bulletin - 12 March 2018
As the guarantor of the security and integrity of systems that use Calypso technology, CNA published the final version of the specification of a Calypso HCE application based on several pre-requisites:
being compatible with the Calypso 3.1 command set,
being compatible with existing ticketing systems without requiring major evolutions of legacy equipment,
guaranteeing a security level on par with the current Calypso systems,
guaranteeing a reasonable level of security when compared with state-of-the-art Calypso security.