Over the years Bluetooth has evolved from being used mostly for audio streaming and file sharing with BT2.0, to high-speed file transfer with BT2.1. With the updates to BT4.x, it is now also used for extremely low energy connectivity requirements for many sensor based applications ideal for the Internet of Things.
A couple of months ago, a vulnerability in the way handshake within the WPA protocol was exposed commonly referred to as the Krack Attack. We at Silex have completed our thorough investigation to assess the scope and impact of this vulnerability.
Silex Technology America, Inc., a global leader in wired and wireless networking solutions, today announced the newest member of the SX-SDMAC family, the SX-SDMAC Plus wireless module. This dual-band IEEE 802.11a/b/g/n/ac WLAN plus Bluetooth 4.2 SDIO module fulfills a strategic role in Silex Technology’s embedded wireless product portfolio, opening new opportunities and markets.
A few months ago, Ofcom, which is UK’s regulatory authority decided to update their regulations to allow Wi-Fi use in the 5.8 GHz band (U-NII-3). It appears that EU/ETSI like UK, is contemplating adding the U-NII-3 band (5.725-5.850 GHz) to the EU domain. Currently EU uses a part of the spectrum (2.4 GHz and 5GHz band), which is becoming increasingly congested and can impair broadband performance. If this happens then this update will open an additional 125 MHz of spectrum in a ‘sub-band’ within the 5 GHz frequency range for Wi-Fi – while ensuring protection for other users, such as satellite services. The extra sub-band increases the number of 80 MHz channels available for Wi-Fi from four to six.
Wireless drivers supporting Microsoft Windows for the SX-SDMAC and SX-SDPAC dual-band IEEE 802.11a/b/g/n/ac WLAN plus Bluetooth “Smart Ready” SDIO modules are now available by Silex. The new drivers add support for Windows 8, Windows 10, Windows 10 IoT Core, Windows Embedded Compact 7 (WEC7), and Windows Embedded Compact 2013 (WEC2013).
The SX-SDMAC module and SX-SDPAC System-in-Package (SiP) were initially released with support for Linux operating system (OS). Now Silex provides complete, production-ready Windows drivers to help customers modernize their Windows-based devices to the latest 802.11ac and Bluetooth 4.1 standards with reduced engineering lead time. Adding compatibility for Windows Embedded and Windows IoT Core allows the SX-SDMAC and SX-SDPAC to easily integrate with networked handheld devices, terminals, industrial computers, and IoT (Internet of Things) smart devices.
All protected Wi-Fi networks are secured using some version of Wi-Fi Protected Access (WPA/2) which rely on the 4-way handshake defined in the 802.11i amendment. Key Re installation AttaCK (KRACK) abuses design or implementation flaws in the WPA2 cryptographic protocols. KRACK works by targeting these 4-way handshakes and thus both WPA and WPA2-certified products are affected by this Krack Attack. 
WPA (sometimes referred to as the draft IEEE 802.11i standard) became available in 2003. To put things in perspective this issue has always been present for the last 14 years, but has recently gained quite a bit of attention. Let's first understand what this WPA2 vulnerability is and asses it's impact.
One of our key focuses and passions here at Silex Technology America is in finding ways to become more involved with our local communities and to help give back to those in need within it. Over the past years Silex has been able to work with and support a number of organizations and causes throughout our local communities. Recently some of our team members in California had the privilege of coming alongside to support the OC Food Bank in Orange County, CA., an organization that is focused on fighting to end hunger within our local community.
Since the news broke out last week, we at Silex have been working to assess the scope of its impact and a plan on how to provide our customers a solution to this WPA2 security issue. This update is to inform our customers the results of our investigation and a preliminary plan on next steps.
Our investigation has shown that:
Tags: enterprise security
Wi-Fi Enterprise Security is critical to Silex as we strive to provide secure, reliable and robust wireless connectivity solutions to our customers. We want to assure our customers that we are well aware of the recent KRACK attack threat to WPA2 Wi-Fi security, and we will be providing a solution imminently.
Recently published research in below references have identified vulnerabilities in some Wi-Fi devices. Those devices reinstall network encryption keys under certain conditions, disabling replay protection and significantly reducing the security of encryption. This security vulnerability is inherent to the WPA2 protocol itself, and in principle impacts all products using the WPA security supplicant.
Few weeks ago I wrote a blog post about developing an ath10k patch to support the SDIO Wi-Fi interface for QCA9377-3 WiFi SoC from Qualcomm Technologies. I am happy to report that we have completed this development and the patch has been submitted to be upstreamed into the mainline Linux kernel. This patch is now available for download. We tested this patch with our SX-SDCAC SDIO Wi-Fi + BT Module and an i.MX6SoloX Platform.