The CD21-Rev3 is a cost-effective, dual-interface (contact and contactless) secure microcontroller specifically designed for public transport applications, providing a high level of security, high speed transactions and easy capabilities of evolution for transport and multi-service applications.
The CD21-Rev3 is a Calypso Network Association product. The CD21-Rev3 is available with 4, 8 or 18 Kbytes of EEPROM.
ISO/IEC 14443B (Parts 1 to 4) at 106, 212 and 424 kbps
Complies with ISO/IEC 7816-3 T=0
Dual or contactless-only configuration
DES, DESX and TDES capability
Full transaction duration, including typical terminal processing compliant with public transportation requirements
Common Criteria EAL5+
Security managed with various access modes: Pin, Session, Always, and Never.
A cryptographic certificate controls the access to file modifications. The certificate is computed by the reader (using its built-in SAM) and the card during the transaction, using DES, DESX or TDES encryption.
Calypso automatic recovery mechanism: all data modified in the card during a secure session are either completely done or not done at all.
A special mechanism synchronizes modifications between the different applications managed by the card. Each command within the session uses its own secrets or delegates its security to the session security manager.
Data organized in Files according to ISO/IEC 7816-4
Tele-ticketing compliant with the EN 1545 standard data model
The file structure may be chosen among many options (for example, 2 Calypso applications, 1 multi-purpose application with 9 contracts and an eTicket application)
Complete CDLight and CD97 (BX) emulation possible
Data is protected by diversified keys (up to 6 keys per directory)