Secured Authentication for Qi 1.3 Certified Wireless Charger

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Infineon Technologies AG, has developed a security solution for automotive wireless charging: OPTIGA Trust Charge automotive complies with version 1.3 of the Wireless Power  Consortium (WPC) Qi standard, which requires strong cryptographic authentication  for wireless charging up to 15 W. For this, the power transmitter must authenticate  itself to the power receiver, such as a cell phone, with a secured storage subsystem. Based on its comprehensive automotive and security expertise, Infineon designed  OPTIGA Trust Charge automotive to meet the necessary application requirements for  this process supporting the development of next-generation charging solutions. 

With this security solution Infineon addresses the rapidly growing market of Qi certified devices. Driven by strong expected global sales of 429 million Qi-certified  smartphones this year and another 197 million chargers either bundled with these  devices or sold in the aftermarket, Strategy Analytics1 forecasts that sales of devices utilizing the Qi standard across all device classes will increase to 712 million units by 2021. 

OPTIGA Trust Charge automotive is an embedded security solution with WPC compliant provisioning and revocation services as well as Qi 1.3-compliant  cryptography features such as ECDSA, NIST-P256 and SHA-256. The solution is  Infineon’s key to the development of automotive wireless charging and features highest levels of security. In addition, the solution is AEC-Q100 Grade 2 qualified and  offers an in-field update function as well as support for up to four certificate chains. 

Furthermore, OPTIGA Trust Charge automotive enables manufacturers of wireless  chargers or dedicated subsystems to do a fast and easy design according to the  latest Qi security requirements. It is a complete turnkey solution for fast time-to market with full system integration support, including embedded software, a  development board, a reference board, as well as documentation for quick and easy design-in – and ready for Qi 1.3. A host software for easy integration with automotive  microcontrollers AURIX or Traveo II is provided as well. 

Additionally, the WPC-specific personalized keys and certificates are pre-installed in  secured Infineon fabs, eliminating the need for customers to invest in security  infrastructure. Infineon is at the forefront of secured wireless charging and is the supplier of secure storage sub systems to NOK9 being embedded into their test tools  for Compliance Testing in Authorized Test labs for Qi certification.


 

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