MIFARE DESFire – Technical Specifications

MIFARE DESFire EV2 4K (optional on Fido2 cards)

Overview

High-security smart card based on NXP MIFARE DESFire EV2 (4 KB), ideal for access control, ticketing, identity, and professional NFC applications.
Cryptnox delivers these cards as dual-interface (contact + contactless) for maximum reader compatibility.

Supported Interfaces

ISO/IEC 14443-A contactless (NFC)
ISO/IEC 7816 contact interface (via dual-interface chip module)

Memory & Structure

4 KB EEPROM user-programmable
Multi-application structure
Up to 28 applications, each with up to 32 files
Flexible file types (standard data, backup, record, value, etc.)

Security

AES-128 cryptography
Mutual authentication
Encrypted secure messaging
Up to 16 keys per application
Compatible with key diversification schemes
NXP Common Criteria EAL5+ certified silicon

Performance

56 MHz (NFC)
Data rates up to 848 kbps
Fast transaction times
Atomic read/write operations

Physical Card

ISO/IEC 7810 ID-1 format (bank-card size)
PVC or composite construction
Optional printing, serials, laser engraving
Operating temperature: –25°C to +70°C

Applications

Corporate & campus access control
Transport ticketing
Time & attendance
Secure identity
NFC business cards (Type 4 NDEF)
Vending & cashless environments

Compatibility

Works with all common ISO 14443-A readers
Compatible with PC/SC contact readers (dual-interface mode)
Supported by Android/iOS NFC (NDEF and ISO-DEP)

Authenticity

✔ Guaranteed genuine NXP MIFARE DESFire EV2 chips
✔ 100% tested and verified before delivery

Links to documentations:

Leaflet

Factsheet

Programming Guide:

Datasheet: