Working group description

Working Group Organisation

CNA activities take shape through the creation of task forces; the main working groups are:

• WG1:  improving and developing Calypso reference specification, to provide an appropriate solution to transport operator needs.

• WG2:  favouring interoperability between transport networks, and amongst networks, to ensure that any Calypso Portable Object can work with any Calypso terminal.

• WG3:  promoting Calypso technology worldwide and participating in national and international standardization initiatives so that Calypso’s good practices will spread throughout the community.

The technical working group WG1 welcomes all contributors who are willing to participate and bring their own expertise: operators, industry vendors and manufacturers, consultants, software houses, and so on.

Its main objective is to ensure a constant improvement of the security features of Calypso. The second objective is to set up and maintain a policy of certification for the different products used in Calypso systems. Another focus is to facilitate the emergence of new technologies and services in the Calypso environment by providing solutions to the world of transport.

The WG1 is organized around Working Packages according to the related topics. Each Package is managed by a company leader, chosen by CNA and paid accordingly.

Every CNA member can participate at different levels: from a simple following of the discussions on the dedicated forums, through a review of the draft documents of specification, and until a more active participation in the regular meetings (also available via web conference).


Main achievements

The goal of each working package, is to find a general agreement on a specification document before to submit it to the board of CNA for approval.

These documents are available for the CNA members.


Following main and recent achievements can be highlighted:

• The specification of a Calypso Light Application (CLAP), and its associated functional test plan.

• The specification of a Calypso HCE Application.

• The User Manual of the version 1.3 of the Calypso CNA applet, which aims at promoting Calypso on NFC phones.

• The last revision 3.2 of the Calypso Portable Object Specification, with AES crypto algorithm and new features for privacy data protection.

• The functional test plan for the Calypso Portable Object Certification that has been implemented for the technical evaluation of the portable object.

• The revision 2.7 of the Hoplink specification, which better takes account of NFC mobile phones and strengthen the security of Hoplink, together with a new version of the document "Best Practices of Hoplink", which aims at facilitating the implementation of Hoplink in the equipments of a newly partner.


Find hereunder the currently active working packages :

WP #


Main topics


Account Based Ticketing

How to introduce ABT in a range of solutions including card centric solutions, mobile ticketing, open payment … ? The question for CNA is to see what part Calypso could and should play in account-based ticketing and what evolutions are required.


Calypso Range of Products

The specification of Calypso Light Application for Portable objects (CLAP) has just been published : it concerns a mid range Calypso product with the security of a Calypso card, but less functions. A task has been launched about a full ISO Contactless Ticket.



Less active since the publication of the specification Hoplink v2.7 in June 2016, along with an update of Best Practices. Work on Hoplink now focusing on its implementation, less on its specifications that are stabilized.


New Security architecture

Security evolutions of Calypso. It produced a specification of the Calypso HCE application and works on the publication of "Guidelines", setting for HCE application additional security measures. It defined the basis of a specification Rev 3.3 of the Calypso application that integrates a public key authentication.


Rev Updates

Update of the specifications of the application of a Calypso Portable Object Rev3.


Portable object certification

Functional test plans definition.


Generic Application Download

Definition of the evolutions of the Calypso applet. It takes into account the secure environments of mobile phones, SIM or eSE.


Calypso Keys Management

Specifications of a standardized key ceremony and a procedure of transfer of keys since SAM to HSM.


SAM Specification

Specifications of the SAM Calypso. The access to some security documents may be restricted.


Requirements & Recommandations for Ticketing Acceptance System

In charge of the publication of the recommendations for the programming of the readers.