p521
v0.13.3 GrowingPure Rust implementation of the NIST P-521 (a.k.a. secp521r1) elliptic curve as defined in SP 800-186
Quick Verdict
- ✓Actively maintained (updated 36d ago)
- !Pre-1.0: API may have breaking changes
- ✓Trusted by 968 crates
- ✓Team maintained (2 owners)
- ✓Permissive license (Apache-2.0 OR MIT)
Security
Deep Insights
2.4M downloads in the last 30 days (79.4K/day), up 51% from the previous period.
968 crates depend on p521. Reasonable ecosystem adoption, though not yet a core dependency.
The primary maintainer publishes 215 crates. This suggests deep Rust expertise and long-term commitment to the ecosystem.
Despite being 7+ years old, p521 hasn't reached 1.0 yet. Expect potential API changes between versions.
12% of releases have been yanked. Check version history before pinning.
Notable dependents include c2pa, ssh-key, hpke, pgp, russh. When high-quality crates choose p521, it's a strong quality signal.
Health Breakdown
Recency, release consistency, active ratio
Yanked ratio, deps, size, maturity, features
Reverse deps, ownership, ecosystem
Downloads, momentum, growth trend
Docs, repo, license, metadata
Download Trend
Top Dependents
Most downloaded crates that depend on p521
Version Adoption
Release Timeline
Feature Flags
default =["arithmetic", "ecdsa", "getrandom", "pem", "std"]
