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x509-parser

v0.18.1 Growing

Parser for the X.509 v3 format (RFC 5280 certificates)

MIT OR Apache-2.0 Edition 2018 MSRV 1.67.1
CryptographyParser implementations #parser#nom#certificate#x509

Quick Verdict

  • โœ“Actively maintained (updated 50d ago)
  • !Pre-1.0: API may have breaking changes
  • โœ“Massive adoption (4.5K crates depend on it)
  • โœ“Permissive license (MIT OR Apache-2.0)

Security

Checking security advisories...
Downloads
95.7M
Dependents
4.5K
Releases
39
Size
103KB

Deep Insights

๐Ÿ“Š
Steady growth

9.5M downloads in the last 30 days (315.4K/day), up 16% from the previous period.

๐Ÿ”—
Widely adopted

4.5K crates depend on x509-parser. Strong ecosystem adoption means battle-tested code and long-term stability.

โš ๏ธ
Single maintainer risk

x509-parser has only 1 owner despite 4.5K dependents. This is a bus-factor concern โ€” consider the implications for long-term support.

๐Ÿ”ฌ
Pre-1.0 for over a year

Despite being 8+ years old, x509-parser hasn't reached 1.0 yet. Expect potential API changes between versions.

๐ŸŒŸ
Used by top crates

Notable dependents include rustls, rustls-webpki, webpki-roots, rustls-native-certs, security-framework. When high-quality crates choose x509-parser, it's a strong quality signal.

Health Breakdown

Maintenance 16/25

Recency, release consistency, active ratio

Quality 14/25

Yanked ratio, deps, size, maturity, features

Community 15/20

Reverse deps, ownership, ecosystem

Popularity 8/15

Downloads, momentum, growth trend

Documentation 11/15

Docs, repo, license, metadata

Download Trend

Daily downloads ยท last 90 days
256K/day avg+67%
0100K200K300K400K500K12/291/162/32/213/113/28

Top Dependents

Version Adoption

v0.16.0
33%
v0.17.0
26%
v0.14.0
17%
v0.15.1
14%
v0.18.0
9%

Release Timeline

39 releasessince 2018
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2026
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Feature Flags

verifyvalidateverify-aws

README

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Maintainers

Dependencies
11
direct dependencies
Dependents
4.5K
crates depend on x509-parser

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