DESFire EV2 is a highly secure and versatile smart card technology developed by NXP Semiconductors. It is widely used in applications requiring secure and efficient data handling, such as public transportation, access control, electronic payment, and loyalty programs. Below are its key features and specifications:
Key Features
Enhanced Security:
- AES (128-bit), Triple DES (3DES), and DES encryption.
- Mutual authentication between the card and reader.
- Secure messaging to protect data during transmission.
Multiple Applications:
- Supports up to 32 different applications on a single card.
- Each application can contain up to 32 files with configurable settings.
Improved Memory:
- Available in various memory sizes (2KB, 4KB, 8KB).
- Flexible file types for data storage, such as cyclic, value, or standard files.
Backward Compatibility:
- Compatible with DESFire EV1 systems for seamless upgrades.
- Interoperable with existing infrastructure using legacy MIFARE protocols.
High-Speed Data Transfer:
- Uses the ISO/IEC 14443A protocol for high-speed contactless communication.
- Supports data transfer rates of up to 848 kbit/s.
Proximity Operation:
- Operating range: typically up to 10 cm (depending on the reader and antenna design).
Key Diversification:
- Supports diversified keys to enhance security in large-scale deployments.
Durability:
- Minimum of 500,000 write cycles.
- Data retention for up to 10 years.
Advantages
- Scalability: Ideal for multi-application environments.
- Efficiency: Fast transaction times, making it suitable for high-traffic applications like public transit.
- Security: Complies with Common Criteria EAL5+ certification, ensuring robustness against attacks.
Use Cases
- Public Transportation: Ticketing systems where users can store multiple tickets or passes on a single card.
- Access Control: Secure identification for buildings, rooms, or systems.
- Loyalty Programs: Storing and managing customer rewards.
- Micropayments: Payments for parking, vending machines, or kiosks.
- Mifare Desfire EV1 Cards