Decision Workspace
contrafact vs uselesskey-rsa vs uselesskey-hmac
Side-by-side comparison of Rust crates
50
contrafact
growingv0.2.0-rc.1
A trait for highly composable constraints ("facts") which can be used both to verify data and to generate arbitrary data within those constraints
64
uselesskey-rsa
experimentalv0.10.0
RSA key fixtures (PKCS#8/SPKI, PEM/DER) with negative variants for tests.
64
uselesskey-hmac
experimentalv0.10.0
HMAC HS256/HS384/HS512 secret fixtures for deterministic and random tests.
Core Metrics
| contrafact | uselesskey-rsa | uselesskey-hmac | |
|---|---|---|---|
| Health Score | 50 | 64 | 64 |
| Total Downloads | 191.7K | 12.7K | 113.4K |
| 30d Downloads | 2.1K | 0 | 3.3K |
| Dependents | 1.6K | 192 | 82 |
| Releases | 12 | 13 | 13 |
| Last Updated | 1109d ago | 23d ago | 23d ago |
| Age | 5y 1m | 4m | 4m |
Health Breakdown
contrafact
Maintenance
4
Quality
11
Community
19
Popularity
6
Documentation
10
uselesskey-rsa
Maintenance
18
Quality
14
Community
12
Popularity
5
Documentation
15
uselesskey-hmac
Maintenance
18
Quality
14
Community
11
Popularity
6
Documentation
15
Technical Details
| contrafact | uselesskey-rsa | uselesskey-hmac | |
|---|---|---|---|
| Version | 0.2.0-rc.1 | 0.10.0 | 0.10.0 |
| Stable (≥1.0) | ✗ No | ✗ No | ✗ No |
| License | MIT | MIT OR Apache-2.0 | MIT OR Apache-2.0 |
| Dependencies | 10 | 14 | 9 |
| Crate Size | 22KB | 34KB | 22KB |
| Features | 2 | 3 | 2 |
| Yanked % | 16.7% | 0.0% | 0.0% |
| Edition | 2021 | 2024 | 2024 |
| MSRV | — | 1.95 | 1.95 |
| Owners | 2 (team) | 1 | 1 |
Links
Quick Verdict
- •uselesskey-rsa leads with a health score of 64/100, but none of the options score above 80.
- •contrafact has the most downloads (191.7K), suggesting wider adoption.
- •contrafact is depended on by 1.6K crates — strongest ecosystem trust.
- •⚠ contrafact has not been updated in over a year.