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MIFARE and DESFire are both RFID based smart card technologies which is developed by NXP Semiconductors.
These have key differences in security, memory structure, and use cases.
1. MIFARE Classic
- Security : Uses a proprietary encryption algorithm (CRYPTO), which has been found to be vulnerable.
- Memory: Divided into sectors and blocks, each with access keys.
- Use Cases: Public transport, access control, and payment systems (low-security applications).
- Common Versions: MIFARE Classic 1K, 4K.
2. MIFARE DESFire
- Security: Uses AES (Advanced Encryption Standard), 3DES, and DES for higher security.
- Memory: A file-based system featuring adaptable access control.
- Use Cases: High-security applications like government ID cards, corporate access, and advanced payment systems.
- Common Versions: MIFARE DESFire EV1, EV2, EV3 (newest, most secure).
Key Differences
| Feature | MIFARE Classic | MIFARE DESFire |
|---|---|---|
| Security | Weak (CRYPTO1, easily cracked) | Strong (AES, 3DES, DES encryption) |
| Memory Structure | Sectors and blocks | File system (more flexible) |
| Common Use Cases | Low-security access, transport cards | High-security applications, corporate ID, banking |
| Versions | Classic 1K, 4K | DESFire EV1, EV2, EV3 |
If security is a priority, MIFARE DESFire is the better choice because it offers strong encryption and flexible memory management. MIFARE Classic is still used in some legacy systems but is considered outdated for high-security applications.
