| Feature | Component | Requirement | RPM | SSL/PKI/Tokens |
| # of keys/participant | Key Management | Fewest | 1 | 3 |
| # of transmissions/msg | Performance | Fewest | 1 | Over 10 |
| Outside trust partners | Key Mgmt/Perf | Fewest | No | Yes |
| Computational aids | Performance | Fewest | No | Yes |
| Install and use steps | Usability | Fewest | 1 | Over 10 |
| Authentication Speed | Performance/Security | Fastest | Fast | Slow (8 >< 50) |
| Key Size Increases | Security | Smallest | 1 byte | Key doubling |
| Code Size | Performance | Smallest | <10K | >60K |
| Provable Mathematics | Security | Desired | Yes | No |