Research Article
A Blockchain-Based User Authentication Scheme with Access Control for Telehealth Systems
| Security requirements | [34] | [21] | [6] | Ours |
| Single registration | ✓ | ✓ | ✓ | ✓ | No online registration center | ✓ | ✓ | ✓ | ✓ | Mutual authentication | ✓ | ✓ | ✓ | ✓ | User anonymity | ✓ | ✓ | ✓ | ✓ | Untraceability | ✓ | ✓ | ✓ | ✓ | Session key agreement | ✓ | ✓ | ✓ | ✓ | Perfect forward secrecy | ✓ | ✓ | ✓ | ✓ | Two-factor security with PUF | | | | ✓ | Access control | ✓ | | ✓ | ✓ | Resistance of known attacks | | | | ✓ |
|
|