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wolfSSL

Open Source Cybersecurity

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Welcome to wolfSSL

wolfSSL is the leading provider of lightweight, portable, embedded TLS and security solutions. Our products secure over 5 billion devices worldwide, from IoT and embedded systems to the cloud.

🚀 Our Products

Security Libraries

  • wolfSSL - Embedded TLS/SSL library supporting up to TLS 1.3 and DTLS 1.3
  • wolfCrypt - FIPS 140-3 validated cryptography engine
  • wolfBoot - OS-agnostic secure bootloader for microcontrollers
  • wolfSSH - Lightweight SSHv2 client and server library
  • wolfMQTT - Lightweight client implementation of MQTT(S) protocol
  • wolfTPM - Portable TPM 2.0 library
  • wolfSentry - Embedded firewall and intrusion prevention system
  • wolfHSM - Portable software HSM library
  • wolfPKCS11 - PKCS#11 interface for wolfCrypt

Command Line Tools

  • wolfCLU - Command Line Utility for wolfSSL/wolfCrypt

Language Wrappers

Examples

Platform and Open Source Project Integrations

🏆 Certifications & Standards

  • FIPS 140-3 (Certificate #4718) and FIPS 140-2 (Certificates #3389, #2425)
  • DO-178C DAL-A certified for avionics
  • Support for TLS 1.3, DTLS 1.3, and post-quantum cryptography

🤝 How to Contribute

We welcome contributions from the community! Here's how you can get involved:

Reporting Issues

  • Email issue reports to support@wolfssl.com
  • Create detailed bug reports with reproduction steps
  • Suggest new features and improvements

Vulnerability Reports

Contributing Code

  1. Fork the repository you want to contribute to
  2. Create a feature branch (git checkout -b feature/amazing-feature)
  3. Commit your changes (git commit -m 'Add amazing feature')
  4. Push to your branch (git push origin feature/amazing-feature)
  5. Open a Pull Request
  6. Email support@wolfssl.com to get and sign a Contributor Agreement

🌟 Why Choose wolfSSL?

  • Lightweight: Optimized for embedded systems with minimal footprint
  • Portable: Cross-platform support for 30+ operating systems
  • Secure: Regular security audits and rapid vulnerability response
  • Fast: Hardware acceleration and assembly optimizations
  • Flexible: Modular design with extensive configuration options

📧 Contact Us


Securing the Internet of Things and Beyond
www.wolfssl.com

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  1. wolfssl Public

    The wolfSSL library is a small, fast, portable implementation of TLS/SSL for embedded devices to the cloud. wolfSSL supports up to TLS 1.3 and DTLS 1.3!

    C 2.6k 876

  2. wolfssh Public

    wolfSSH is a small, fast, portable SSH implementation, including support for SCP and SFTP.

    C 425 91

  3. wolfTPM Public

    wolfTPM is a highly portable TPM 2.0 library, designed for embedded use.

    C 280 68

  4. wolfBoot Public

    wolfBoot is a portable, OS-agnostic, secure bootloader for microcontrollers, supporting firmware authentication and firmware update mechanisms.

    C 428 122

  5. wolfssl-examples Public

    Example applications using the wolfSSL lightweight SSL/TLS library

    C 269 183

  6. wolfHSM Public

    HSM library that uses wolfCrypt as it's fallback crypto

    C 18 17

Repositories

Showing 10 of 49 repositories
  • wolfTPM Public

    wolfTPM is a highly portable TPM 2.0 library, designed for embedded use.

    C 280 GPL-2.0 68 0 4 Updated Jul 11, 2025
  • libgpg-error Public
    C 0 GPL-2.0 0 0 0 Updated Jul 11, 2025
  • libgcrypt-wolfssl Public

    Experimental port of wolfSSL into libgcrypt

    C 0 GPL-2.0 1 0 0 Updated Jul 11, 2025
  • wolfssl Public

    The wolfSSL library is a small, fast, portable implementation of TLS/SSL for embedded devices to the cloud. wolfSSL supports up to TLS 1.3 and DTLS 1.3!

    C 2,552 GPL-2.0 876 102 (2 issues need help) 46 Updated Jul 11, 2025
  • wolfHSM Public

    HSM library that uses wolfCrypt as it's fallback crypto

    C 18 GPL-3.0 17 4 3 Updated Jul 11, 2025
  • wolfProvider Public

    wolfCrypt and wolfCrypt FIPS provider for OpenSSL

    C 20 GPL-3.0 24 3 17 Updated Jul 10, 2025
  • wolfssh Public

    wolfSSH is a small, fast, portable SSH implementation, including support for SCP and SFTP.

    C 425 91 7 8 Updated Jul 10, 2025
  • .github Public
    0 0 0 0 Updated Jul 10, 2025
  • wolfssljni Public

    wolfSSL JSSE provider and JNI wrapper for SSL/TLS, supporting up to TLS 1.3!

    Java 65 GPL-2.0 36 2 3 Updated Jul 9, 2025
  • wolfssl-examples Public

    Example applications using the wolfSSL lightweight SSL/TLS library

    C 269 183 11 31 Updated Jul 9, 2025