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.

yaSSL 2012 Annual Report

Business and Company Progress

• We doubled our customer base again this year and dramatically increased revenues, confirming the usefulness of our technology, our open source strategy, and our relevance in the emerging device security and BYOD markets.
• We have further penetrated key vertical markets, including home appliances, smart metering, sensors, M2M, gaming, VoIP, banking, and defense/military.   
• We expanded our partnerships with Synopsys, Freescale, Mentor Graphics, Intel, Microchip, ARM, Marvell, FreeRTOS, EBS Net, Cavium, and STMicroelectronicselectronics.
• We successfully participated in the following events:  CES, FOSDEM, Design West, OSCON, RSA, Black Hat, Game Developer Conference, Design East, Infosec UK, Intel Developer Forum, Intel Alliance Summit, and ARM TechCon.
• We increased the size of our team, and continue to hire top notch engineering talent.
• We continue to value and support the open source community through our free support offering for open source users.
• We released two new case studies surrounding M2M communication (Cinterion, CCww) and a new white paper with Intel about AES-NI.
• We gave presentations at FOSDEM 2012 (Technical Update), the Kerberos Consortium during RSA (Kerberos/GSS-API Android), DESIGN West (Nucleus Support), Infosecurity UK (What to look for in a SSL/TLS library), and the MySQL Meetup in Seattle (yaSSL in MySQL).
• yaSSL introduced a Japanese version of to better cater to our Japanese users and customers.
• We introduced a new three-tiered support program.

wolfSSL Technical Progress

• AES-GCM – Direct AES Galois Counter Mode support and cipher suites
• CRL – Certificate Revocation List processing with directory monitoring
• OCSP – Online Certificate Status Protocol support built in
• Lean PSK  – A low footprint, 24k, PSK TLSv1.2 build
• Reduced Memory use after handshake – Once the TLS handshake is complete, handshake resources are freed
• Lower stack memory use – Use of large static buffers eliminated
• Reliable DTLS, Cookies – DTLS cookies and full reliability now supported, no longer beta
• Unit/Suite Tests – Exposed unit API, hash, and cipher suite tests with valgrind support
• Static ECDH – Now supports several static ECDH cipher suites
• ECC client cert – Authentication with client ECC certificates now supported
• ECC released into open source – Now available on github and downloads
• SHA-384 – Direct use and cipher suites supported
• Subject AltName processing – AltNames easily retrieved from peer certificate for verification
• Sniffer SessionTicket support – Support for modern browsers using session tickets
• Command line example options – Example client and server now have several runtime options

wolfSSL Porting Progress

• FreeRTOS and FreeRTOS Windows Simulator
• SafeRTOS
• Freescale MQX/RTCS/MFS.  wolfSSL is now ported to MQX and has been tested on the Kinetis MCU.  Example CodeWarrior projects are now available in the wolfSSL download.
• Yocto/OpenEmbedded.  A new Yocto/OpenEmbedded layer is available for easy integration of wolfSSL into existing Yocto projects.
• Nucleus RTOS
• TinyOS.  Several CTaoCrypt algorithms have been ported to TinyOS

yaSSL Embedded Web Server Progress

• Release version 1.0 with bug fixes and feature enhancements
• SafeRTOS port


• MIT Java GSS-API for Android
• wolfSSL is now able to be used as a crypto provider for MIT Kerberos
• wolfSSL now supports ssmtp 2.64
• libscs now has support for wolfSSL

wolfSSL Lightweight SSL in 20 kB with Lean PSK

Are you interested in using the wolfSSL embedded SSL library in an extremely resource constrained environment? If so, you may be interested to hear that we have recently implemented a wolfSSL “Lean PSK” build which enables the wolfSSL library to be built with a footprint size of 20kB!

The “Lean PSK” build requires the use of pre-shared keys with wolfSSL, along with removing several additional features. If you are curious, or would like to learn more, please contact us at

CyaSSL Competitive Upgrade Program

One of the services that yaSSL provides is the CyaSSL Competitive Upgrade Program. With this program, yaSSL offers competitive upgrade pricing for those who wish move from an outdated, orphaned, or overpriced SSL library to the CyaSSL embedded SSL library with low cost and minimal disturbance to their code base.

Here’s an outline of the Competitive Upgrade Program:

  1. 1.You need to currently be using a commercial competitor to CyaSSL.

  2. 2.You will receive up to two weeks of on-site consulting to switch out your old SSL library with CyaSSL.  Travel expenses are not included.

  3. 3.Normally, two weeks is the right amount of time for us to make the replacement in your code and do initial testing.  Additional consulting on a replacement is available as needed.

  4. 4.You will receive the standard CyaSSL royalty free license to ship with your product.

The purpose of this program is to enable users who are currently spending too much on their embedded SSL implementation to move to CyaSSL with ease.  If you are interested in learning more, or interested in how CyaSSL compares to what you are currently using, then please contact us at

ECC Support Comes to the wolfSSL Embedded SSL Library

Although ECC support for the wolfSSL lightweight SSL library has been available in our GitHub repository for the past several weeks, we wanted to officially announce it to our users and customers. An official download of wolfSSL with ECC will be available on the website with the next official release of wolfSSL.

wolfSSL’s ECC implementation can be found in the /cyassl/ctaocrypt/ecc.h header file and the /ctaocrypt/src/ecc.c source file. Supported ECC cipher suites include:

/* ECDHE suites */

/* ECDH suites */

/* AES-GCM suites */

To view or download the most recent version of the wolfSSL sources with ECC integrated, please visit our source repository on GitHub ( If you have any questions about ECC support in wolfSSL, please let us know at

MIT Kerberos GSS-API with wolfSSL Now Available for Android

Support for the MIT GSS-API library is now available for the Android platform – complete with an org.ietf.jgss (RFC 5653) compatible application programming interface, wolfSSL cryptography integration, and NDK sample application.

You may have read our previous blog entry announcing the initial phases of our effort to port the MIT Kerberos libraries and wolfSSL embedded SSL library to the Android platform (see link in Reference section, below). This post described initial availability of the Kerberos libraries to Android through the native NDK framework – enabling Android NDK developers to add Kerberos support to their NDK applications at a native C or C++ programming level. At that time, we also commented on next steps for the project and sought feedback from the community on adding a Java API to make using Kerberos on Android easier and more standardized.

Since that time, we have been hard at work enhancing the project, adding support for a new Java GSS-API wrapper, updating our example code, and adding new features to our sample NDK application.

1. Java GSS-API Wrapper

The addition of a Java wrapper around the native MIT GSS-API took part in two stages – a SWIG-generated ( Java interface, which then in turn was used as a building block for a org.ietf.jgss Java API. The individual layers are visualized in the figure below. Both the SWIG layer and the Java GSS-API layer are able to be used in a Java application to access the underlying MIT Kerberos/GSS-API libraries. The SWIG layer is more tedious to use and less standardized than the Java GSS-API layer, but is closer to the C programming API of the native MIT GSS-API. We suggest that Java developers use the org.ietf.jgss Java interface over using the SWIG layer directly. As the org.ietf.jgss interface followed RFC 5653, Java developers should be able to refer to the standard Java documentation for the org.ietf.jgss package for usage instructions and class descriptions.

Source code for this project has been released under the open source MIT license, and is currently available for download on GitHub. Both the Java Generic Security Services API wrappers (SWIG and Java GSS-API), as well as example client and server applications and build instructions are located in the kerberos-java-gssapi package, at the following GitHub URL:

2. Enhanced Example Code

Included in the Java GSS-API package, we have created several example applications to help developers understand how to use this project in their own application. There are two sets of client and server examples provided. The first one is a set of client and server applications which directly use the SWIG-generated Java interface. The second set of applications is a client and server that use the more standardized Java GSS-API interface (org.ietf.jgss).

It is recommended for Java developers to use the Java GSS-API examples, as they demonstrate programming and API usage which is more common in the Java programming language. Before running any of the included examples, the development machine must first have a krb5.conf file and KDC set up correctly to match the principal names used in the examples. For more details about building and running these example applications, please see the README included in the kerberos-java-gssapi package.

3. Sample NDK Application

As one of the main goals of this project was to bring MIT Kerberos/GSS-API support to the Android platform, we have created a sample Android NDK application to serve as an example and reference to Android developers. This sample application provides a GUI wrapper around the MIT Kerberos kinit, klist, kvno, and kdestroy applications. It also provides a sample client using the Java GSS-API interface to connect and communicate with the example server application (from Section 2, above).

This package contains cross-compiled version of the MIT Kerberos libraries, and includes instructions on how to re-compile the Kerberos libraries yourself for the Android platform. For details on how to build and run this example application in the Android emulator, please see the README file located in the NDK application package.

All sources for this sample application are located in the kerberos-android-ndk package, located at the following URL:

yaSSL and MIT are excited to bring Android developers MIT Kerberos and GSS-API support and look forward to seeing what kinds of applications will use this functionality. If you have any questions, comments, or feedback, we would enjoy to hear it! Please contact us directly at


MIT Kerberos:
Initial announcement:

Team yaSSL

Security on Freescale Kinetis MQX with wolfSSL

Hello Kinetis users!  

Our team has now ported and released wolfSSL lightweight SSL for Freescale Kinetis.  The newest work is for MQX/RTCS/MFS on Kinetis tower systems.  Check our Github repository for the most recent source code:

If you are a Kinetis user, you will also be pleased to know that we support FreeRTOS, Micrium, and bare metal or operating systemless (NO_OS) configurations as well.  You will find wolfSSL is optimal for connected home and Smart Grid security applications on Kinetis.

In addition to MQX/RTCS/MFS support, Kinetis onboard Random Number Generator Accelerator (RNGA) support is also available for wolfSSL.  If you have a demanding performance requirement for your crypto, then let us know.  We can work with you to optimize the following hardware supported algorithms:  DES, 3DES, AES, MD5, SHA-1, SHA-256.  We are also available to help with SHA-3.

We have bundled several example CodeWarrior projects with wolfSSL for MQX/RTCS/MFS, including a wolfSSL library project, CTaoCrypt test app, and wolfSSL example client. When building wolfSSL for MQX, define FREESCALE_MQX in cyassl/ctaocrypt/settings.h. This in turn defines FREESCALE_K70_RNGA which enables support for the Kinetis H/W RNGA.

You are welcome to contact us with any support or configuration questions at

Team yaSSL, from Montana, Idaho, Iowa, Washington, and Oregon.  All American Crypto you can Trust.  

yaSSL Embedded Web Server SafeRTOS Port

Have you been searching for a web server that runs on SafeRTOS? We recently ported the yaSSL Embedded Web Server and wolfSSL embedded SSL library to the SafeRTOS operating system. This means that you can easily serve up HTTPS content from your SafeRTOS-enabled project. The yaSSL Embedded Web Server offers a very small footprint, with build sizes of 100kB with SSL enabled (or 40kB without SSL). It also offers a full list of features including SSI, aliases, digest authorization, IP restrictions, and more.

From the SafeRTOS website, “SAFERTOS® is a unique real-time, deterministic operating system especially designed for critical applications. It is available pre-certified according to key standards in markets including Industrial and Medical. First certified by TÜV SÜD in 2007, SAFERTOS was developed in compliance with IEC61508 SIL3, and it continues to set the pace as the first pre-certified real-time operating system available in the ROM of a micro-controller.”

If you are interested in learning more about our port, or would like to try out either of these products on a SafeRTOS platform, please contact us at for details.

yaSSL Embedded Web Server:
wolfSSL embedded SSL library:

Good article on potential SHA-3 (aka Keccak) use in embedded systems

Here`s a good article if you`re wondering how SHA-3 will be used:

From the article:

“What then will SHA-3 be good for? While Polk says it may take years to identify all the possibilities for Keccak, it immediately provides an essential insurance policy in case SHA-2 is ever broken. He also speculates that the relatively compact nature of Keccak may make it useful for so-called “embedded” or smart devices that connect to electronic networks but are not themselves full-fledged computers. Examples include sensors in a building-wide security system and home appliances that can be controlled remotely.
‘The Internet as we know it is expanding to link devices that many people do not ordinarily think of as being part of a network,’ Polk says. ‘SHA-3 provides a new security tool for system and protocol designers, and that may create opportunities for security in networks that did not exist before.’”

yaSSL is considering implementing a beta of SHA-3 in our wolfSSL embedded SSL product.  Our current timeline will have code available sometime around Christmas this year.  If you`re interested in taking a look at our implementation, then email us at

Some Android apps found to have serious SSL vulnerabilities

Researchers from two German universities have found that a large number of Android applications available today in the Google Play store have vulnerabilities related to SSL usage which may open the door for malicious man-in-the-middle attacks. You can find several blog posts explaining the vulnerabilities including one from Network World and the H Online.

The researchers explain several of the mis-use cases that can arise in these Android apps in their paper, linked below. Listed from the paper, these include:

“Trusting all Certificates. The TrustManager interface can be implemented to trust all certificates, irrespective of who signed them or even for what subject they were issued.

Allowing all Hostnames. It is possible to forgo checks of whether the certificate was issued for this address or not, i. e., when accessing the server, a certificate issued for is accepted.

Trusting many CAs. This is not necessarily a flaw, but Android 4.0 trusts 134 CA root certificates per default. Due to the attacks on several CAs in 2011, the problem of the large number of trusted CAs is actively debated.

Mixed-Mode/No SSL. App developers are free to mix secure and insecure connections in the same app or not use SSL at all. This is not directly an SSL issue, but it is relevant to mention that there are no outward signs and no possibility for a common app user to check whether a secure connection is being used. This opens the door for attacks such as SSL stripping or tools like Firesheep.”

To read the full paper, take a look here. The wolfSSL embedded SSL library runs on Android and can be used in Android NDK-based applications for SSL support. If you need guidance on how to correctly use wolfSSL in your project or application, email us at for more information.

Research Paper: Why Eve and Mallory Love Android: An Analysis of Android SSL (In)Security
Network World: Some Android apps have serious SSL vulnerabilities, researchers say

NIST selects Keccak for SHA-3

On October 12, NIST announced Keccak as the winner of its Secure Hash Algorithm (SHA-3) competition.

Keccak is designed to permute the data in a different manner than MD5, SHA-1, and SHA-2, making it immune to many of the attacks on those hashes. It promises roughly 13 cycles per byte to process the hash. The hash is limited to using bitwise XOR, AND, NOT, and rotations. It will need up to 1600 bytes of RAM for the hash state, but no lookup tables. It provides arbitrary sized output. Keccak can also perform keyed hashing, by setting the initial state by priming the hash with the key. The algorithm is simple and small, perfect for embedded systems.

If you would be interested in talking about Keccak, SHA-3, and wolfSSL embedded SSL, send an email to


Posts navigation

1 2 3 152 153 154 155 156 157 158 177 178 179

Weekly updates