base64ct
v1.8.3 StablePure Rust implementation of Base64 (RFC 4648) which avoids any usages of data-dependent branches/LUTs and thereby provides portable "best effort" constant-time operation and embedded-friendly no_std support
Quick Verdict
- ✓Stable API (1.x for 5+ years)
- ✓Massive adoption (3.2K crates depend on it)
- ✓Team maintained (2 owners)
- ✓Tiny footprint (32KB, 2 deps)
- ✓Permissive license (Apache-2.0 OR MIT)
Security
Deep Insights
31.3M downloads in the last 30 days (1.0M/day), up 35% from the previous period.
3.2K crates depend on base64ct. Strong ecosystem adoption means battle-tested code and long-term stability.
The primary maintainer publishes 216 crates. This suggests deep Rust expertise and long-term commitment to the ecosystem.
The API has been stable (1.x) for over 5 years with 31 releases. This level of maturity means you can depend on it without worrying about breaking changes.
Only 2 direct dependencies. Lean dependency tree means faster builds and lower supply chain risk.
At 31KB, base64ct is lightweight. Small crate size correlates with focused, well-scoped functionality.
39% of releases have been yanked. Check version history before pinning.
Notable dependents include spki, pem-rfc7468, rsa, elliptic-curve, argon2. When high-quality crates choose base64ct, 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 base64ct
