RECENT BLOG NEWS

So, what’s new at wolfSSL? Take a look below to check out the most recent news, or sign up to receive weekly email notifications containing the latest news from wolfSSL. wolfSSL also has a support-specific blog page dedicated to answering some of the more commonly received support questions.

wolfCrypt Python: PQC Algorithm Support

wolfCrypt Python, a Python wrapper for wolfSSL’s cryptographic library wolfCrypt, now has supported Python APIs that can utilize the PQC algorithms ML-KEM and ML-DSA.

The ML-KEM (Module Lattice-based Key Encapsulation Mechanism) APIs provide quantum-resistant key exchange with three parameter sets (512/768/1024). The implementation includes key generation, encapsulation, decapsulation, and key import/export functionality.

The ML-DSA (Module Lattice-based Digital Signature Algorithm) APIs provide quantum-resistant digital signatures with three parameter sets (44/65/87). Features include key generation, signing, and verification.

Using the Python API, you can try out the PQC algorithm quickly with little effort. The following links show information to start the PQC trials with wolfCrypt Python.

If you have questions about any of the above, please contact us at facts@wolfSSL.com or +1 425 245 8247.

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wolfSSH Support With TPM Public Key Authentication

wolfSSH now supports TPM public key authentication with RSA. This feature enhances security for embedded and IoT applications by leveraging TPM 2.0 functionality for client side authentication. Below is a summary of the key changes that were made in PR# 754.

TPM Public Key Authentication with RSA
PR# 754 provides TPM-based RSA authentication for client-side public key operations to facilitate integration into non-TPM RSA workflows.

Benefits of Using TPM for Public Key Authentication

  1. Hardware-Backed Security
    When using public key authentication, a TPM device provides the ability to safely secure and manage private keys and cryptographic algorithms inside the TPM. Since the private key is loaded securely inside the TPM and used only from within the TPM this allows for higher security. In this case the TPM device generates and supplies a secure keyblob that holds the private and public key data. wolfSSH reads and verifies this data and formats the key in a way that can be utilized in the SSH functionality.
  2. Specialized Performance
    While maintaining the lightweight, high-performance aspects of wolfSSH and implementing TPM-based features, wolfSSL has combined the security benefits of hardware-backed key storage and SSH functionality, ensuring robust authentication without compromising efficiency or security.

Testing
To test the SSH TPM-based public key authentication, we developed a comprehensive github CI workflow that tests with and without custom keyauth. The general steps we followed where:

  1. TPM Simulator:
    Ran the TPM 2.0 server from a TPM simulator.
  2. Key Generation:
    Generated a keyblob with wolfTPM’s keygen tool, converting the public key to the SSH format using ssh-keygen.
  3. Server & Client Setup:
    Start the server and supply the base-64 encoded public key:
    `./examples/echoserver/echoserver -s key.ssh`
    Run the client with the TPM 2.0 keyblob and user supplied password:
    `./examples/client/client -i ../wolfTPM/keyblob.bin -u hansel -K ThisIsMyKeyAuth`
  4. Testing Command with Debugging:
    Used `--enable-debug` to enable debug output and verified functionality through command line debug logs.

The CI test tpm-ssh.yml validates proper operation of TPM-based public key authentication by validating outputs and testing with a custom and default keyauth. This process ensures that wolfSSH functions correctly and securely with TPM-based keys.

Conclusion
With TPM public key authentication, wolfSSH combines the best of both worlds: secure private key handling and robust SSH functionality. These changes enhance security without compromising performance, making it an ideal choice for users seeking both ease of use and advanced cryptographic protection.

For more details and steps to get started you can refer to the TPM section in the wolfSSH README. For more information or questions, contact us at facts@wolfSSL.com or +1 425 245 8247.

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curl Distro Discussion 2025

Join the second annual curl Distro Discussion on April 10th at 3 PM UTC (5 PM CEST). This online event brings together Linux and BSD distributions, OS maintainers, and the curl community for an in-depth two-hour conference. The event is free and open to anyone interested in improving curl’s integration within operating systems and package distributions.

Join us: curl Distro Discussion 2025
Date: April 10th | 3 PM UTC (5 PM CEST)

This is a unique opportunity for curl developers, maintainers, and distributors to discuss important aspects of curl deployment across various operating systems. Our goal is to make curl more efficient and secure within distributions.

Key discussion topics include:

  • Enhancing curl’s build system, third-party library, and documentation for distributors
  • Strategies to streamline security advisories and patch management
  • Discussion on HTTP/3, long-term support, and TLS advancements
  • Exploring Post-Quantum Cryptography in curl
  • The future of wcurl and trurl
    And more…

Feel free to add your own proposed discussion topics and sign up as an intended participant. Mark your calendar for April 10th at 3 PM UTC (5 PM CEST) and be part of shaping curl’s future in distributions and secure networking.

Check out the details of curl Distro Discussion 2025, and share this invitation with others in the open-source and security communities to help spread the word and ensure the right people are invited.

If you have questions about any of the above, please contact us at facts@wolfSSL.com or call us at +1 425 245 8247.

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Live Webinar: Everything You Need to Know about DTLS 1.3

Learn How DTLS 1.3 Enhances Security and Performance in UDP-Based Applications.

Register Now: Everything You Need to Know about DTLS 1.3
Date: April 9th | 10 AM PT

As a leader in DTLS 1.3 implementation, wolfSSL continues to advance secure communication with optimized performance and robust security features. Our latest updates make it easier than ever to integrate DTLS 1.3 into your projects.

Join us on April 9th at 10 AM PT, as wolfSSL Software Developer Marco Oliverio dives into the latest features and practical applications of DTLS 1.3. Discover the key improvements over DTLS 1.2, how wolfSSL is revolutionizing secure communication, and what these changes mean for your project’s security and performance.

What You’ll Learn:

  • Why Upgrade: Stronger security & better performance with DTLS 1.3
  • Key Differences: DTLS 1.3 vs. DTLS 1.2
  • wolfSSL in Action: Best Practices & real-world use cases
  • Hands-On Demos: Integrating DTLS 1.3 into UDP applications
  • DTLS 1.3 at wolfSSL: Explore the new features of DTLS 1.3 and get a preview of our roadmap for future developments

Register Now!

As always, our webinar will include Q&A throughout. If you have questions about any of the above, please contact us at facts@wolfSSL.com or call us at +1 425 245 8247.

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µITRON Support in wolfBoot

We regularly receive inquiries regarding µITRON support in wolfSSL products—and understandably so.

As a specification for real-time operating systems (RTOS), ITRON has led to a wide variety of implementations. These include open-source projects such as TOPPERS/ASP, as well as commercial RTOS offerings like eT-Kernel (by eSOL), µC3 (by eForce), and NORTi (by MISPO), among many others. In addition, many companies have developed and deployed their own in-house RTOS implementations based on the µITRON specification.

As a result, although these systems are often described as “µITRON-compliant,” in practice they tend to include proprietary extensions or slight modifications. This has given rise to a diverse ecosystem of µITRON derivatives, each with its own unique features.

wolfSSL products are designed to support µITRON, including these many derivative implementations. This includes products such as wolfBoot, which typically require a higher degree of platform-specific integration. The high portability of wolfSSL—including wolfBoot—is the result of extensive experience supporting a broad range of RTOS and general-purpose operating systems, along with carefully localized platform-dependent code.

With commercial-grade technical support backed by wolfSSL’s proven portability technology, customers can confidently integrate wolfSSL products into their µITRON-based systems—regardless of the variant—ensuring robust, secure, and reliable operation.

If you have questions about any of the above, please contact us at facts@wolfSSL.com or call us at +1 425 245 8247.

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wolfCrypt Takes Over libgcrypt

We are pleased to announce the start of an official wolfSSL project to port wolfCrypt FIPS into libgcrypt. This initiative aims to replace the underlying cryptography in applications using libgcrypt with wolfCrypt’s certified algorithms. With wolfCrypt already achieving FIPS 140-3 certification, applications using libgcrypt’s API can immediately be deployed in environments that require certified cryptography, such as government, military, finance, and medical applications. This port not only enhances security but also saves developers significant time and effort. For developers, this integration means they can focus on building their applications without the burden of transitioning applications to meet cryptographic compliance. By using wolfCrypt, developers can ensure that their applications meet the highest security standards without the need for extensive testing and validation of multiple cryptographic libraries. This project also provides a seamless way to explore and evaluate wolfCrypt for future projects, offering a pathway to potentially transition applications to natively use wolfCrypt.

Furthermore, this effort has significant implications for Linux distributions, which often incorporate a wide array of cryptographic dependencies, such as libgcrypt, to provide comprehensive functionality to many packages. By ensuring that all cryptographic dependencies use a consistent cryptography provider like wolfCrypt, distributions can maintain uniform security standards across the entire system and applications. This consistency is crucial for reducing complexity and potential vulnerabilities that arise from using multiple cryptographic libraries. It simplifies the management of cryptographic standards and reduces the risk of incompatibilities or security gaps, particularly in environments where security and compliance are paramount.

Take a deeper look here: https://github.com/wolfSSL/libgcrypt-wolfssl/tree/libgcrypt-1.11.0-wolfCrypt

For more details or questions about this effort, please reach out to facts@wolfSSL.com or call us at +1 425 245 8247.

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Secure Boot Support for Nordic nRF5340: Firmware Update for Dual-Core Systems

We’re thrilled to announce that wolfBoot now supports the powerful Nordic nRF5340 dual-core SoC, bringing enterprise-grade security to your IoT applications. This cutting-edge microcontroller combines robust security features with high performance, making it an ideal choice for modern IoT deployments.

Key Features

  • Dual-Core Architecture
    • Application Core:
      • Cortex-M33 at 128MHz with TrustZone
      • 1MB Flash and 512KB RAM
    • Network Core:
      • Cortex-M33 at 64MHz
      • 256KB Flash and 64KB RAM
  • wolfBoot Signature Options
    • RSA (2048/3072/4096)
    • ECC (256/384/521)
    • ED25519/ED448
    • PQC: ML-DSA/LMS/XMSS
    • Hybrid PQC schemes
  • Hardware based root of trust

Implementation Details

Our reference implementation uses the Nordic nRF5340-DK development kit with external QSPI flash for secure update storage. We’ve also enabled delta (differential) updates to optimize bandwidth usage on constrained networks. Simply enable this feature with DELTA_UPDATES=1.

Communication Setup

The DK board features two virtual COM ports for debugging:

  • Application Core: UART0=P0.20
  • Network Core: UART0=P1.01

The application core manages network core updates through IPC and shared memory, ensuring seamless coordination between both cores.

Getting Started

For detailed build instructions and example output from an update, visit our documentation.

Important Notes

  • Network core updates must be signed with –id 2 and placed in the application core update partition
  • Coming soon: Hardware-based root of trust using the UICR key storage region

Testing Tools

We’ve provided helpful testing scripts in our GitHub repository. The build_flash.sh script automates the process of:

  • Creating internal and external flash images
  • Signing each with version 2
  • Placing updates in external flash
  • Triggering updates (equivalent to calling wolfBoot_update_trigger())

Support

For questions or assistance, please contact us at facts@wolfSSL.com or call us at +1 425 245 8247.

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wolfTPM supports NSING Technologies NS350

wolfTPM is a portable, open-source TPM 2.0 stack with backward API compatibility, designed for embedded use. It is highly portable, and has native support for Linux and Windows. RTOS and bare metal environments can take advantage of a single IO callback for SPI hardware interface, no external dependencies, and compact code size with low resource usage.

wolfTPM has been supporting NSING Technologies Z32H330TC and recently added support for NS350 starting from wolfTPM 3.6.0.

The NS350 series are NSING’s new generation of high-security, high-performance, and cost-effective TPM 2.0 security chips that offer significant improvements in both technical performance and security. The NS350 devices are all Common Criteria (EAL4+) certified.

The users of NS350 can take advantage of wolfTPM’s API wrappers to help with complex TPM operations like attestation and cryptographic processes like the generation of Certificate Signing Request (CSR) using a TPM. We have a multitude of examples to help accelerate your integration.

If you have questions about any of the above, please contact us at facts@wolfSSL.com or call us at +1 425 245 8247

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Partner Webinar: Developing Secure Embedded Applications using wolfSSL and the MQX RTOS Platform

Learn how to build secure and high-performance embedded applications by leveraging wolfSSL’s world class encryption products and the MQX RTOS platform.

Join us on April 2nd at 10 AM PT for a live webinar where wolfSSL Senior Software Engineer Eric Blankenhorn and Embedded Access Vice President Doug Bruce will show you how to build robust, secure embedded applications by combining wolfSSL’s high-performance encryption with the MQX RTOS platform from Embedded Access.

Register today: Developing Secure Embedded Applications using wolfSSL and the MQX RTOS Platform
Date: April 2nd | 10 AM PT

The MQX RTOS v5 is a reliable, feature-rich real-time operating system designed for embedded systems requiring multitasking and real-time performance. It’s trusted across industrial, medical, consumer applications, and more.

wolfSSL is a lightweight, portable TLS library that supports up to TLS 1.3, FIPS 140-3, and post-quantum cryptography and is optimized for embedded environments. wolfSSH is a compact SSH library offering both client and server functionality, supporting various authentication methods.

What You’ll Learn:

  • How to integrate wolfSSL with MQX RTOS for secure, high-performance applications
  • How to implement secure sockets and serve web pages from your embedded system
  • How to secure an upper layer protocol like MQTT, SMTP, or Telnet
  • Best practices and real-world use cases

Register now to secure your spot! Walk away with actionable insights you can apply immediately to your projects.

As always, our webinar will include Q&A throughout. If you have questions about any of the above, please contact us at facts@wolfSSL.com or +1 425 245 8247.

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curl up 2025 – Save The Date

Join us for curl up 2025: The Ultimate Event for curl Enthusiasts!

Mark your calendars! curl up 2025 is happening in Prague, Czech Republic, on May 3-4, 2025. This official annual developer conference for curl and libcurl brings together experts, contributors, and users from around the world. It’s the premier event for developers, engineers, and tech enthusiasts working with the curl project.

Date: May 3-4, 2025
Location: Pracovna, Vlkova 36, Praha 3 – Žižkov, 130 00, Czech Republic
Registration: Register here
Fee: Free of charge

curl up 2025 is a unique gathering that celebrates the curl community and its future. Expect insightful sessions on the current state and roadmap of the curl project, security best practices, and emerging technologies. Engage in collaborative discussions on the project’s growth, sustainability, and team expansion.

We’d love to hear from you! If there’s a topic you’re passionate about or a session you’d like to attend, let us know. Your input will help shape the agenda for curl up 2025.

Join us in supporting curl, a crucial open-source project. We are currently seeking sponsors for curl up 2025. Your sponsorship will directly contribute to a community dedicated to maintaining curl’s robustness, security, and continued free accessibility.

Mark your calendars for May 3-4, 2025, and stay tuned for registration details.

See you in Prague!

If you have questions about any of the above, please contact us at facts@wolfSSL.com or call us at +1 425 245 8247.

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