Decision Workspace
kem vs aws-lc-rs vs signature
Side-by-side comparison of Rust crates
63
kem
growingv0.3.0
Traits for Key Encapsulation Mechanisms (KEMs): public-key cryptosystems designed to enable a sender (a.k.a. encapsulator) to generate and encrypt a short secret key and transmit it to a receiver (a.k.a. decapsulator) confidentially
81
aws-lc-rs
stablev1.17.0
aws-lc-rs is a cryptographic library using AWS-LC for its cryptographic operations. This library strives to be API-compatible with the popular Rust library named ring.
80
signature
stablev3.0.0
Traits for cryptographic signature algorithms (e.g. ECDSA, Ed25519)
Core Metrics
| kem | aws-lc-rs | signature | |
|---|---|---|---|
| Health Score | 63 | 81 | 80 |
| Total Downloads | 1.6M | 124.7M | 307.9M |
| 30d Downloads | 453.8K | 17.7M | 33.7M |
| Dependents | 133 | 2.5K | 4.6K |
| Releases | 23 | 51 | 55 |
| Last Updated | 52d ago | 12d ago | 23d ago |
| Age | 5y 3m | 3y 1m | 7y 6m |
Health Breakdown
kem
Maintenance
15
Quality
10
Community
16
Popularity
7
Documentation
15
aws-lc-rs
Maintenance
21
Quality
20
Community
17
Popularity
8
Documentation
15
signature
Maintenance
18
Quality
19
Community
20
Popularity
8
Documentation
15
Technical Details
| kem | aws-lc-rs | signature | |
|---|---|---|---|
| Version | 0.3.0 | 1.17.0 | 3.0.0 |
| Stable (≥1.0) | ✗ No | ✓ Yes | ✓ Yes |
| License | Apache-2.0 OR MIT | ISC AND (Apache-2.0 OR ISC) | Apache-2.0 OR MIT |
| Dependencies | 2 | 9 | 2 |
| Crate Size | 10KB | 239KB | 15KB |
| Features | 1 | 13 | 2 |
| Yanked % | 52.2% | 3.9% | 5.5% |
| Edition | 2024 | 2021 | 2024 |
| MSRV | 1.85 | 1.71.0 | 1.85 |
| Owners | 3 (team) | 4 (team) | 3 (team) |
Links
Quick Verdict
- •aws-lc-rs has the highest health score (81/100) — a strong overall choice.
- •signature has the most downloads (307.9M), suggesting wider adoption.
- •signature is depended on by 4.6K crates — strongest ecosystem trust.
- •kem is pre-1.0 — API may change.