The USB Implementers Forum (USB-IF) today announced the launch of the USB Type-C Authentication specification, a software protocol that will serve as a line of defense protecting USB-C products from non-compliant USB-C cables that are potentially able to damage a device.

With the USB Type-C Authentication specification, computers and other devices with USB-C ports will be able to confirm the authenticity of a USB device or USB charger, verifying elements like certification status and power flow, along with ensuring no malware is present.

Retina-MacBook-USB-C

Using this protocol, host systems can confirm the authenticity of a USB device or USB charger, including such product aspects as the descriptors/capabilities and certification status. All of this happens right at the moment a wired connection is made - before inappropriate power or data can be transferred.

USB Type-C Authentication empowers host systems to protect against non-compliant USB Chargers and to mitigate risks from maliciously embedded hardware or software in USB devices attempting to exploit a USB connection

The USB Type-C Authentication specification comes after some non-compliant USB-C cables were able to damage electronic devices. Google engineer Benson Leung spent weeks testing USB-C cables sold by Amazon after a third-party cable he bought destroyed his Chromebook Pixel, making it his mission to highlight the risks of non-compliant cables.

Leung's work led Amazon to ban third-party retailers from offering USB-C cables that do not adhere to the standard specifications issued by the USB-IF, and it's also led to the creation of the protections announced today.

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

- A standard protocol for authenticating certified USB Type-CTM 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

Apple began using USB-C with the Retina MacBook, choosing the standard because it allows both data and power transfer through a single connector. USB-C is appealing for its universality, but because USB-C cables can transfer more power than traditional USB connectors, non-compliant or faulty equipment can damage electronic devices by providing too much power.

The Retina MacBook already has safeguards built in to protect it from non-compliant cables, but the new USB Type-C Authentication feature will offer another layer of protection should Apple choose to implement it. Current machines will only charge from third-party USB-C power adapters if they comply with the USB Power Delivery specification, and if too much power is detected, the USB-C ports on the MacBook will shut down.

While the Retina MacBook is the only product that currently offers USB-C functionality, Apple may choose to offer USB-C ports in additional machines in upcoming updates scheduled to take place across 2016.

Top Rated Comments

MasterMac Avatar
120 months ago
A problem that only exists because companies insist on combining charging cables and data cables into one.

Reminds me the story of the space pen. NASA realized that regular ballpoint pens don't work in zero gravity, so they spent some enormous amount of resources on R&D to design a pressurized ink cartridge that can write upside down and in zero gravity, what we call the space pen. The Russians just used a pencil.

Sometimes the simplest solution is the best one. Dedicated power port. Done.
http://www.snopes.com/business/genius/spacepen.asp
Score: 11 Votes (Like | Disagree)
CarlJ Avatar
120 months ago
Reminds me the story of the space pen. NASA realized that regular ballpoint pens don't work in zero gravity, so they spent some enormous amount of resources on R&D to design a pressurized ink cartridge that can write upside down and in zero gravity, what we call the space pen. The Russians just used a pencil.
Aside from this story being known to be false (someone already provided the snopes link, Fisher paid for the development themselves, so no tax dollars were harmed), a pencil is a terrible idea in space - you'll invariably end up with random bits of graphite (if not also sharpener shavings and eraser dross) floating around the capsule, getting into places where they ought not to be - especially troubling given that graphite is electrically conductive and could damage, you know, those electronic circuits you're depending on for life support, navigation, landing, and other such mundane activities.

This suggests a quote that isn't fake:

"For every complex problem there is an answer that is clear, simple, and wrong." -- H. L. Mencken
Score: 7 Votes (Like | Disagree)
GeneralChang Avatar
120 months ago
Yes I know the story is not literally true. That doesn't mean it's not a nice and colorful anecdote to go along with the idea that the simplest solution is sometimes the best one.
It would be if it weren't the case that, in the story you shared, the simplest solution was not the best one.
Score: 6 Votes (Like | Disagree)
manu chao Avatar
120 months ago
A problem that only exists because companies insist on combining charging cables and data cables into one.

Sometimes the simplest solution is the best one. Dedicated power port. Done.
Would you advocate that solution for smartphones as well?

Before non-Apple (smart)phones switched to some version of USB (and even then it took a while until micro USB emerged as a standard), the plethora of different charging plugs and parameters for phones were a royal pain, in regard to not being able to use other people's chargers and in perfectly good chargers ending up in landfills when one bought a new phone which came with a different type of charger. Standardisation of chargers then coincided with the need to transfer large-ish amounts of data to phones and that locked in the combination of data and charging in one port.
Score: 3 Votes (Like | Disagree)
You are the One Avatar
120 months ago
Do you take the RED cable or the BLUE cable?

Score: 3 Votes (Like | Disagree)
Gudi Avatar
120 months ago
A problem that only exists because companies insist on combining charging cables and data cables into one.
How dare they! Don't they know data and power are both just electricity? Hundreds of millions of iPods, iPhones and iPads work fine with two cables, one for data and one for power. Now suddenly those silly engineers want to change a proven concept.
Reminds me the story of the space pen. NASA realized that regular ballpoint pens don't work in zero gravity, ...
Reminds me of this one time, when someone on the internet came up with a story which had nothing to do with the topic at hand.
Score: 2 Votes (Like | Disagree)

Popular Stories

A18 Pro Chip

New MacBook With A18 Pro Chip Spotted in Apple Code

Monday June 30, 2025 8:05 am PDT by
Apple is developing a MacBook with the A18 Pro chip, according to findings in backend code uncovered by MacRumors. Earlier today, Apple analyst Ming-Chi Kuo reported that Apple is planning to launch a low-cost MacBook powered by an iPhone chip. The machine is expected to feature a 13-inch display, the A18 Pro chip, and color options that include silver, blue, pink, and yellow. MacRumors...
iPhone 17 Pro Lower Logo Feature 1

iPhone 17 Pro Coming Soon With These 14 New Features

Monday June 30, 2025 1:08 pm PDT by
Apple's next-generation iPhone 17 Pro and iPhone 17 Pro Max are less than three months away, and there are plenty of rumors about the devices. Apple is expected to launch the iPhone 17, iPhone 17 Air, iPhone 17 Pro, and iPhone 17 Pro Max in September this year. Below, we recap key changes rumored for the iPhone 17 Pro models:Aluminum frame: iPhone 17 Pro models are rumored to have an...
iPhone Car Key WWDC 2025

Apple Announces 13 Automakers Planning to Offer iPhone Car Keys

Friday June 27, 2025 11:42 am PDT by
In 2020, Apple added a digital car key feature to its Wallet app, allowing users to lock, unlock, and start a compatible vehicle with an iPhone or Apple Watch. The feature is currently offered by select automakers, including Audi, BMW, Hyundai, Kia, Genesis, Mercedes-Benz, Volvo, and a handful of others, and it is set to expand further. During its WWDC 2025 keynote, Apple said that 13...
maxresdefault

Five Features Coming to AirPods Pro 3

Friday June 27, 2025 10:52 am PDT by
Apple hasn't updated the AirPods Pro since 2022, and the earbuds are due for a refresh. We're counting on a new model this year, and we've seen several hints of new AirPods tucked away in Apple's code. Rumors suggest that Apple has some exciting new features planned that will make it worthwhile to upgrade to the latest model. Subscribe to the MacRumors YouTube channel for more videos. Heal...
macbook air spacegray purple

Apple Planning to Launch Low-Cost MacBook Powered By iPhone Chip

Monday June 30, 2025 3:20 am PDT by
Apple is planning to launch a low-cost MacBook powered by an iPhone chip, according to Apple analyst Ming-Chi Kuo. In an article published on X, Kuo explained that the device will feature a 13-inch display and the A18 Pro chip, making it the first Mac powered by an iPhone chip. The A18 Pro chip debuted in the iPhone 16 Pro last year. To date, all Apple silicon Macs have contained M-series...
anker power bank recall

PSA: Anker Recalls Multiple Power Banks Due to Fire Risk

Friday June 27, 2025 4:16 pm PDT by
Popular accessory maker Anker this month launched two separate recalls for its power banks, some of which may be a fire risk. The first recall affects Anker PowerCore 10000 Power Banks sold between June 1, 2016 and December 31, 2022 in the United States. Anker says that these power banks have a "potential issue" with the battery inside, which can lead to overheating, melting of plastic...
Chase Sapphire Reserve Apple Perk Feature

Chase Sapphire Reserve Card Introduces New Perk for Apple Customers

Wednesday June 25, 2025 2:08 pm PDT by
Chase this week announced a series of new perks for its premium Sapphire Reserve credit card, and one of them is for a pair of Apple services. Specifically, the credit card now offers complimentary annual subscriptions to Apple TV+ and Apple Music, a value of up to $250 per year. If you are already paying for Apple TV+ and/or Apple Music directly through Apple, those subscriptions will...
replay all time playlist apple music

Apple Music Debuts All-New Personalized Playlist

Monday June 30, 2025 7:16 am PDT by
As part of its 10-year celebrations of Apple Music, Apple today released an all-new personalized playlist that collates your entire listening history. The playlist, called "Replay All Time," expands on Apple Music's existing Replay features. Previously, users could only see their top songs for each individual calendar year that they've been subscribed to Apple Music, but now, Replay All...
iPhone 17 Pro Blue Feature Tighter Crop

iPhone 17 Pro Launching in a Few Months With These 12 New Features

Thursday June 26, 2025 2:00 am PDT by
Apple's next-generation iPhone 17 Pro and iPhone 17 Pro Max are around three months away, and there are plenty of rumors about the devices. Apple is expected to launch the iPhone 17, iPhone 17 Air, iPhone 17 Pro, and iPhone 17 Pro Max in September this year. Below, we recap key changes rumored for the iPhone 17 Pro models:Aluminum frame: iPhone 17 Pro models are rumored to have an...