Tuesday, April 12, 2016

USB Type-C Gets Authentication Protocol

A new USB Type-C Authentication specification defines cryptographic-based authentication for USB Type-C chargers and devices. This will enable systems to confirm the authenticity of a USB device or USB charger at the moment a wired connection is made – before inappropriate power or data can be transferred.

“USB is well-established as the favored choice for connecting and charging devices,” said Brad Saunders, USB 3.0 Promoter Group Chairman. “In support of the growing USB Type-C ecosystem, we anticipated the need for a solution extending the integrity of the USB interface. The new USB Type-C Authentication protocol equips product OEMs with the proper tools to defend against ‘bad’ USB cables, devices and non-compliant USB Chargers.”

Key characteristics of the USB Type-C Authentication solution include:

  • A standard protocol for authenticating certified USB Type-C Chargers, devices, cables and power sources
  • Support for authenticating over either USB data bus or USB Power Delivery communications channels
  • Products that use the authentication protocol retain control over the security policies to be implemented and enforced
  • Relies on 128-bit security for all cryptographic methods
  • Specification references existing internationally-accepted cryptographic methods for certificate format, digital signing, hash and random number generation

http://www.usb.org
The newly completed USB 3.1 specification adds enhancements to enable operation at at up to 10 Gbps.

SuperSpeed USB 10 Gbps uses a more efficient data encoding and will deliver more than twice the effective data through-put performance of existing SuperSpeed USB over enhanced, fully backward compatible USB connectors and cables. Compatibili

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