What is the differences between RFID DESfire EV3 4K White Card and M1 Card?
Storage capacity:
RFID DESfire EV3 4K white card: storage capacity is 4K bytes (4096 bytes).
M1 card: usually there are two types, Mifare S50 (capacity 1K) and Mifare S70 (capacity 4K). The M1 card generally mentioned is S50, with a capacity of 1K bytes (1024 bytes), divided into 16 sectors, each sector is 4 blocks, each block is 16 bytes
Encryption performance:
RFID DESfire EV3 4K White Card: Supports encryption algorithms such as DES/2K3DES/3K3DES/AES 128-bit, and ensures the confidentiality and integrity of data transmission through a hardware encryption engine, with a high security level.
M1 card: Each sector has two keys, KeyA and KeyB, and the four bits in the middle of the 3 blocks are storage control bits, which determine the permissions of the sector.
Specification:
| Item | RFID DESfire EV3 4K Smart card |
| Material | PVC |
| Dimension | 85.5*54*mm |
Thickness | 0.84~0.88mm |
| Frequency | 13.56MHz |
| Protocol | ISO / IEC 14443 A 1-4 compliant |
| Fast data transfer | 106 kbit/s, 212 kbit/s, 424 kbit/s, 848 kbit/s |
| Unique ID | 7B UID |
| Memory | 4k byte |
| Rewritable | 1 000 000 cycles |
| Store period | 25 years |
Application:
Public transportation ticketing, access control management, micropayment, membership loyalty program, student identity recognition, road toll collection, parking management, hotel services, event ticketing and other scenarios that require identity recognition, data storage and security authentication.
How can we fully utilize the card's native security features?
1. Prioritize high-strength encryption algorithms, abandoning the less secure DES and choosing AES128 or 3K3DES algorithms to enhance data protection from the underlying encryption layer.
2. Strictly configure key permissions, assigning independent key sets to each application, with granular file-level permissions down to read, write, modify, and delete operations, preventing a single key leak from causing full card security risks.
3. Enable a two-way authentication mechanism, completing two-way authentication between the card and the reader before each data transfer.
