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Top 6 C Smartcard Projects
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Stream
Stream - Scalable APIs for Chat, Feeds, Moderation, & Video. Stream helps developers build engaging apps that scale to millions with performant and flexible Chat, Feeds, Moderation, and Video APIs and SDKs powered by a global edge network and enterprise-grade infrastructure.
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hydrafw
HydraBus HydraFW official firmware for open source multi-tool for anyone interested in learning/developping/debugging/hacking/Penetration Testing for basic or advanced embedded hardware
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tls-ca-manage
Multi-level Certificate Authority Management tool, front-end tool to OpenSSL, written in bash shell.
Project mention: Lets Encrypt Ending TLS Client Authentication Certificate Support in 2026 | news.ycombinator.com | 2025-05-17Yes. But I like my own certificate tool better.
Problem is OpenSSH 3.1 broke CLI syntax, so that needs fixing.
Used JetBrain with Bash plugin.
https://github.com/egberts/tls-ca-manage
C Smartcard discussion
C Smartcard related posts
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NIST: Personal Identity Verification (PIV) of Federal Employees and Contractors
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How do you put your private key files (.ppk) on a security key (HYPERFIDO U2F/FIDO2/HOTP) ?
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Unix sockets, Cygwin, SSH agents, and sadness
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Create Your Own Local Root CA With Yubikey Signing
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You can link an OpenPGP key to a German eID
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Enhance your Network Security with Zero Trust and OTP
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SSH from any computer using FIDO2 resident key, multiple keys and hosts.
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A note from our sponsor - SaaSHub
www.saashub.com | 8 Jul 2025
Index
What are some of the best open-source Smartcard projects in C? This list will help you:
# | Project | Stars |
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1 | OpenSC | 2,781 |
2 | vsmartcard | 786 |
3 | putty-cac | 521 |
4 | hydrafw | 394 |
5 | PCSC | 306 |
6 | tls-ca-manage | 42 |