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rcgen

v0.14.8 Growing

Rust X.509 certificate generator

MIT OR Apache-2.0 Edition 2021 MSRV 1.88
#certificate#mkcert#ca

Quick Verdict

  • โœ“Actively maintained (updated 14d ago)
  • !Pre-1.0: API may have breaking changes
  • โœ“Massive adoption (12.6K crates depend on it)
  • โœ“Team maintained (2 owners)
  • โœ“Permissive license (MIT OR Apache-2.0)

Security

Checking security advisories...
Downloads
65.9M
Dependents
12.6K
Releases
51
Size
65KB

Deep Insights

๐Ÿ“ˆ
Strong growth momentum

7.8M downloads in the last 30 days (258.9K/day), up 35% from the previous period.

๐Ÿ›๏ธ
Foundational crate

12.6K crates depend on rcgen โ€” it's part of the Rust ecosystem's core infrastructure. Removing it from your dependency tree would be extremely difficult.

๐Ÿ‘ฅ
Team maintained

This crate is maintained by a team (2 owners), reducing bus-factor risk and ensuring continuity.

๐Ÿ”ฌ
Pre-1.0 for over a year

Despite being 7+ years old, rcgen hasn't reached 1.0 yet. Expect potential API changes between versions.

๐ŸŒŸ
Used by top crates

Notable dependents include rustls, tokio-rustls, rustls-webpki, webpki-roots, quinn-proto. When high-quality crates choose rcgen, it's a strong quality signal.

Health Breakdown

Maintenance 19/25

Recency, release consistency, active ratio

Quality 13/25

Yanked ratio, deps, size, maturity, features

Community 17/20

Reverse deps, ownership, ecosystem

Popularity 8/15

Downloads, momentum, growth trend

Documentation 15/15

Docs, repo, license, metadata

Download Trend

Daily downloads ยท last 90 days
216K/day avg+32%
0100K200K300K2/263/164/34/215/95/26

Top Dependents

Version Adoption

v0.14.5
44%
v0.14.7
33%
v0.14.3
8%
v0.14.6
8%
v0.14.2
7%

Release Timeline

10 releases1 yankedsince 2025
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2025
8
2026
2
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Yanked

Feature Flags

default =["crypto", "pem", "ring"]

fipsring*crypto*aws_lc_rsaws_lc_rs_unstable

README

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Maintainers

Dependencies
9
direct dependencies
Dependents
12.6K
crates depend on rcgen

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