Decision Workspace
p256 vs p256_flow vs p384
Side-by-side comparison of Rust crates
77
p256
growingv0.14.0
Pure Rust implementation of the NIST P-256 (a.k.a. secp256r1, prime256v1) elliptic curve as defined in SP 800-186, with support for ECDH, ECDSA signing/verification, and general purpose curve arithmetic
46
p256_flow
growingv1.0.0
Flow-Rust-SDK Version of p256 Pure Rust implementation of the NIST P-256 (a.k.a. secp256r1, prime256v1) elliptic curve with support for ECDH, ECDSA signing/verification, and general purpose curve arithmetic Heavily modified for signing Flow blockchain transactions
78
p384
growingv0.14.0
Pure Rust implementation of the NIST P-384 (a.k.a. secp384r1) elliptic curve as defined in SP 800-186 with support for ECDH, ECDSA signing/verification, and general purpose curve arithmetic support.
Core Metrics
| p256 | p256_flow | p384 | |
|---|---|---|---|
| Health Score | 77 | 46 | 78 |
| Total Downloads | 142.8M | 4.2K | 66.3M |
| 30d Downloads | 8.4M | 0 | 4.4M |
| Dependents | 8.8K | 26 | 3.0K |
| Releases | 61 | 1 | 52 |
| Last Updated | 10d ago | 1755d ago | 7d ago |
| Age | 7y 9m | 4y 9m | 7y 9m |
Health Breakdown
p256
Maintenance
18
Quality
16
Community
20
Popularity
8
Documentation
15
p256_flow
Maintenance
1
Quality
22
Community
10
Popularity
4
Documentation
9
p384
Maintenance
19
Quality
16
Community
20
Popularity
8
Documentation
15
Technical Details
| p256 | p256_flow | p384 | |
|---|---|---|---|
| Version | 0.14.0 | 1.0.0 | 0.14.0 |
| Stable (≥1.0) | ✗ No | ✓ Yes | ✗ No |
| License | Apache-2.0 OR MIT | Apache-2.0 OR MIT | Apache-2.0 OR MIT |
| Dependencies | 14 | 9 | 14 |
| Crate Size | 77KB | 57KB | 75KB |
| Features | 17 | 12 | 17 |
| Yanked % | 3.3% | 0.0% | 3.9% |
| Edition | 2024 | 2018 | 2024 |
| MSRV | 1.85 | — | 1.85 |
| Owners | 2 (team) | 1 | 2 (team) |
Links
Quick Verdict
- •p384 leads with a health score of 78/100, but none of the options score above 80.
- •p256 has the most downloads (142.8M), suggesting wider adoption.
- •p256 is depended on by 8.8K crates — strongest ecosystem trust.
- •⚠ p256_flow has not been updated in over a year.
- •p256, p384 are pre-1.0 — API may change.