Top 8 C Authentication Projects

FreeRADIUS

14 2,004 10.0 C

FreeRADIUS - A multi-protocol policy server.

Project mention: My collection of Ansible roles for self-hosting everything with Rocky Linux and FreeIPA | /r/selfhosted | 2023-06-02

FreeRADIUS WiFi authentication server

Themis

2 1,808 5.9 C

Easy to use cryptographic framework for data protection: secure messaging with forward secrecy and secure data storage. Has unified APIs across 14 platforms.
InfluxDB

www.influxdata.com sponsored

Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
OpenID

10 947 9.3 C

OpenID Certified™ OpenID Connect Relying Party implementation for Apache HTTP Server 2.x

Project mention: Keycloak SSO with Docker Compose and Nginx | news.ycombinator.com | 2024-02-11

I did something similar, though picked Apache with mod_auth_openidc, which is a certified Relying Party implementation: https://github.com/OpenIDC/mod_auth_openidc
In other words, I can protect arbitrary applications through my reverse proxy and require either certain claims/roles, or simplify auth to the point where my downstream app/API will just receive a bunch of headers like OIDC_CLAIM_sub, OIDC_CLAIM_name, OIDC_CLAIM_email through the internal network, not making me bother with configuring OIDC libraries for all of my APIs and configure them in each stack that I might use, but rather contain all of that complexity in the web server.
Basically:
  user <==> Apache (with mod_auth_openidc) <==> API (with OIDC_ headers, if logged in)

pam_reattach

1 545 0.0 C

Reattach to the user's GUI session on macOS during authentication (for Touch ID support in tmux)
eid-mw

1 190 7.9 C

eID Middleware (main repository)
l8w8jwt

1 123 7.8 C

Minimal, OpenSSL-less and super lightweight JWT library written in C.

Project mention: L8w8jwt – a minimal, OpenSSL-less and lightweight JWT library written in C | news.ycombinator.com | 2023-07-23

ecc

1 27 6.5 C

elliptic-curve cryptography
WorkOS

workos.com sponsored

The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.
3crypt

1 1 3.9 C

Strong encryption tool, aiming for 512 bits of symmetric security and memory hard key derivation.

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).