rustls/rcgen

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Generate X.509 certificates, CSRs

Stars: 505
Forks: 157
Open beginner issues: 0
Indexed issues: 30
Avg merge: 39m
Merged PRs (30d): 1

Dominant language: Rust
License: No license data
Last GitHub push: Sep 9, 2026
Latest indexed: Sep 20, 2026
Contributing guide: No contributing guide
Code of conduct: No code of conduct
Beginner labels: No beginner labels indexed

Beginner friendly Everything

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30 open issues indexed

CertificateSigningRequestParams::from_der can parse the wrong key type Open

Difficulty 4/5 3-5 days Newbie friendliness 55/100

rustls/rcgen#448 · 2 comments · 1 reaction · Opened Aug 20, 2026
Rework X509 extension code Open

next-major-release

rustls/rcgen#446 · 1 assignee · Opened Aug 11, 2026
0.15 release planning Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

rustls/rcgen#418 · 3 comments · Opened Mar 13, 2026
Adding SymCrypt as a crypto provider Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

rustls/rcgen#414 · 7 comments · Opened Mar 5, 2026
naming: `CertifiedKey` is confusing Open

Difficulty 3/5 1-2 days Newbie friendliness 42/100

rustls/rcgen#391 · 3 comments · 1 reaction · Opened Oct 20, 2025
`CertifiedIssuer::from_ca_cert_{pem,der}`? Open

Difficulty 3/5 1-2 days Newbie friendliness 42/100

rustls/rcgen#375 · 2 comments · 1 reaction · Opened Sep 4, 2025
Support for all RFC5280 standard extensions Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

rustls/rcgen#370 · 13 comments · Opened Aug 11, 2025
Add conversion trait impls from `x509_parser::x509::X509Name` to `DistinguishedName` Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

rustls/rcgen#355 · 3 comments · Opened Jun 18, 2025
How to Set or Remove the critical Flag on Key Usage or Extended Key Usage Extensions Open

Difficulty 4/5 3-5 days Newbie friendliness 42/100

rustls/rcgen#353 · 3 comments · Opened Jun 5, 2025
Cert embedding a X25519 pubkey, signed by an Ed25519 key (not self signed) Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

rustls/rcgen#351 · 8 comments · Opened May 23, 2025
`cert::KeyPairAlgorithm` is not public Open

Difficulty 2/5 1-3 hours Newbie friendliness 42/100

rustls/rcgen#309 · 5 comments · 1 reaction · Opened Jan 7, 2025
compiling for wasm Open

Difficulty 4/5 3-5 days Newbie friendliness 28/100

rustls/rcgen#270 · 3 comments · Opened May 1, 2024
Should key usages be tracked as a `HashSet` instead? Open

next-major-release

Difficulty 5/5 Over a week Newbie friendliness 30/100

rustls/rcgen#265 · 2 comments · 2 reactions · Opened Apr 8, 2024
KeyPair::serialize_der() should yield PrivateKeyDer Open

next-major-release

Difficulty 3/5 1-2 days Newbie friendliness 35/100

rustls/rcgen#260 · 1 comment · 1 reaction · Opened Apr 1, 2024
Support `CryptoProvider` like plugin mechanism Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

rustls/rcgen#228 · 8 comments · 3 reactions · Opened Feb 21, 2024
KeyPair::from_pem detects incorrect algorithm? Open

Difficulty 3/5 1-2 days Newbie friendliness 42/100

rustls/rcgen#193 · 6 comments · Opened Dec 4, 2023
Deterministic certificates Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

rustls/rcgen#173 · 23 comments · 1 reaction · Opened Oct 4, 2023
Enforce extension uniqueness Open

next-major-release

Difficulty 4/5 3-5 days Newbie friendliness 42/100

rustls/rcgen#155 · 2 reactions · Opened Sep 10, 2023
Allow CSR parsing to handle custom extensions Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

rustls/rcgen#150 · 2 reactions · Opened Aug 31, 2023
Deduplicate testsuite Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

rustls/rcgen#140 · Opened Aug 23, 2023
Better interoperability with x509-parser Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

rustls/rcgen#135 · 2 comments · Opened Jul 19, 2023
X509v3 extensions from certificate not transferred to CSR Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

rustls/rcgen#122 · 1 comment · 1 reaction · Opened May 30, 2023
Do we have a complete example Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

rustls/rcgen#110 · 4 comments · 2 reactions · Opened Mar 14, 2023
Problem creating self signed cert with ECDSA algorithm and using as client identity in native-tls Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

rustls/rcgen#82 · 4 comments · Opened Apr 11, 2022
Support multiple DnValue per key in DistinguishedName Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

rustls/rcgen#81 · 2 comments · 2 reactions · Opened Mar 31, 2022
rcgen should refuse emply subject_alt_names Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

rustls/rcgen#73 · 2 comments · Opened Jan 31, 2022
Basic Constraints certificate extension Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 45/100

rustls/rcgen#68 · 2 comments · Opened Nov 29, 2021
Support all signature algorithms Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

rustls/rcgen#60 · 6 comments · Opened Jul 14, 2021
Test that go accepts our generated certs and CSRs Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

rustls/rcgen#34 · Opened May 23, 2020
csr verification with openssl gives error for ed25519 certificates Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

rustls/rcgen#11 · 2 comments · Opened Jun 11, 2019

rustls/rcgen

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