Skip to content
@wolfSSL

wolfSSL

Open Source Cybersecurity

Website Blog Documentation Download Support

Twitter LinkedIn YouTube GitHub


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

Pinned Loading

  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 878

  2. wolfssh Public

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

    C 428 92

  3. wolfTPM Public

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

    C 285 68

  4. wolfBoot Public

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

    C 430 122

  5. wolfssl-examples Public

    Example applications using the wolfSSL lightweight SSL/TLS library

    C 270 184

  6. wolfHSM Public

    HSM library that uses wolfCrypt as it's fallback crypto

    C 19 17

Repositories

Showing 10 of 50 repositories
  • wolfTPM Public

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

    C 285 GPL-2.0 68 0 4 Updated Jul 23, 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 2,559 GPL-3.0 878 107 (2 issues need help) 39 Updated Jul 23, 2025
  • wolfcrypt-jni Public

    wolfCrypt JCE provider and JNI wrapper

    Java 32 GPL-2.0 15 0 3 Updated Jul 23, 2025
  • wolfCLU Public

    The wolfSSL Command Line Utility wolfCLU

    C 19 GPL-2.0 30 2 4 Updated Jul 23, 2025
  • wolfProvider Public

    wolfCrypt and wolfCrypt FIPS provider for OpenSSL

    C 21 GPL-3.0 24 3 16 Updated Jul 23, 2025
  • osp Public

    wolfSSL Open Source project ports

    C 28 40 5 10 Updated Jul 23, 2025
  • wolfssh Public

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

    C 428 92 7 7 Updated Jul 23, 2025
  • wolfMQTT Public

    wolfMQTT is a small, fast, portable MQTT client implementation, including support for TLS 1.3.

    C 550 GPL-2.0 159 11 1 Updated Jul 23, 2025
  • meta-wolfssl Public

    wolfSSL layer for OpenEmbedded and Yocto, containing product recipes, examples, and bbappend files.

    BitBake 32 GPL-2.0 25 3 (1 issue needs help) 1 Updated Jul 22, 2025
  • Arduino-wolfSSL Public

    This repository is a restructured copy of https://github.com/wolfSSL/wolfssl/ for the Arduino environment. Any Pull Requests for code changes should be opened there.

    C 12 GPL-3.0 5 3 (1 issue needs help) 0 Updated Jul 22, 2025