Facebook mandates stronger digital verification of apps

The company's change follows an industry move to retire the use of the SHA-1 hashing algorithm

Facebook is mandating that developers use a stronger hashing algorithm for apps'  digital signatures as of Oct. 1, mirroring a move by other tech giants.

Facebook is mandating that developers use a stronger hashing algorithm for apps' digital signatures as of Oct. 1, mirroring a move by other tech giants.

Facebook will require application developers to move later this year to a more secure type of digital signature for their apps, which is used to verify a program's legitimacy.

As of Oct. 1, apps will have to use SHA-2 certificate signatures rather than ones signed with SHA-1. Both are cryptographic algorithms that are used to create a hash of a digital certificate that can be mathematically verified.

Apps that use SHA-1 after October won't work on Facebook anymore, wrote Adam Gross, a production engineer at the company, in a blog post.

"We recommend that developers check their applications, SDKs, or devices that connect to Facebook to ensure they support the SHA-2 standard," Gross wrote.

SHA-1 has been considered weak for about a decade. Researchers have shown it is possible to create a forged digital certificate that carries the same SHA-1 hash as legitimate one.

The type of attack, called a hash collision, could trick a computer into thinking it is interacting with a legitimate digital certificate when it actually is a spoofed one with the same SHA-1 hash. Using such a certificate could allow an attacker to spy on the connection between a user and an application or website.

Microsoft, Google, Mozilla and other organizations have also moved away from SHA-1 and said they will warn users of websites that are using a connection that should not be trusted.

The Certificate and Browser Forum, which developers best practices for web security, has recommended in its Baseline Requirements that digital certificate issuers stop using SHA-1 as of Jan. 1.

Send news tips and comments to jeremy_kirk@idg.com. Follow me on Twitter: @jeremy_kirk

Join the newsletter!

Error: Please check your email address.
Rocket to Success - Your 10 Tips for Smarter ERP System Selection

Tags securityencryptionFacebook

Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Jeremy Kirk

IDG News Service
Show Comments

Father’s Day Gift Guide

Most Popular Reviews

Latest Articles

Resources

PCW Evaluation Team

David Coyle

Brother PocketJet PJ-773 A4 Portable Thermal Printer

I rate the printer as a 5 out of 5 stars as it has been able to fit seamlessly into my busy and mobile lifestyle.

Kurt Hegetschweiler

Brother PocketJet PJ-773 A4 Portable Thermal Printer

It’s perfect for mobile workers. Just take it out — it’s small enough to sit anywhere — turn it on, load a sheet of paper, and start printing.

Matthew Stivala

HP OfficeJet 250 Mobile Printer

The HP OfficeJet 250 Mobile Printer is a great device that fits perfectly into my fast paced and mobile lifestyle. My first impression of the printer itself was how incredibly compact and sleek the device was.

Armand Abogado

HP OfficeJet 250 Mobile Printer

Wireless printing from my iPhone was also a handy feature, the whole experience was quick and seamless with no setup requirements - accessed through the default iOS printing menu options.

Azadeh Williams

HP OfficeJet Pro 8730

A smarter way to print for busy small business owners, combining speedy printing with scanning and copying, making it easier to produce high quality documents and images at a touch of a button.

Andrew Grant

HP OfficeJet Pro 8730

I've had a multifunction printer in the office going on 10 years now. It was a neat bit of kit back in the day -- print, copy, scan, fax -- when printing over WiFi felt a bit like magic. It’s seen better days though and an upgrade’s well overdue. This HP OfficeJet Pro 8730 looks like it ticks all the same boxes: print, copy, scan, and fax. (Really? Does anyone fax anything any more? I guess it's good to know the facility’s there, just in case.) Printing over WiFi is more-or- less standard these days.

Featured Content

Latest Jobs

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?