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Mozilla: Tor, Mozilla's Reps Community, Using TPM Based Client Certificates on Firefox and Apache

Submitted by Roy Schestowitz on Thursday 7th of March 2019 11:15:34 PM Filed under
Moz/FF
  • Tor’s Anti-Fingerprinting Technique ‘Letterboxing’ Coming To Firefox 67

    Once again, Mozilla has taken a leaf out of Tor browser’s handbook with the introduction of user anti-fingerprinting technique in Firefox 67 which is scheduled for a release this year in May.

    Dubbed ‘Letterboxing,’ this method protects against window-size related fingerprinting which is used for profiling and tracking users.

  • Mozilla Reps Community: Rep of the Month – November 2018

    Currently he is an active Mozilla TechSpeaker and loves to evangelise about WebExtensions and Progressive Web Apps. He has been an inspiration to many and loves to keep working towards a better web. He has worked extensively on Rust and WebExtensions, conducting many informative sessions on these topics recently. Together with other Mozillians he also wrote “Building Browser Extension”.

  • James Bottomley: Using TPM Based Client Certificates on Firefox and Apache

    Firefox is somewhat hard to handle for SSL because it includes its own hand written mozilla secure sockets code, which has a toolkit quite unlike any other ssl toolkit1. In order to import a client certificate and key into firefox, you need to create a pkcs12 file containing them and import that into the “Your Certificates” box which is under Preferences > Privacy & Security > View Certificates

    Obviously, simply supplying a key file to firefox presents security issues because you’d like to prevent a clever hacker from gaining access to it and thus running off with your client certificate. Firefox achieves a modicum of security by doing all key operations over the PKCS#11 API via a software token, which should mean that even malicious javascript cannot gain access to your key but merely the signing API

    However, assuming you don’t quite trust this software separation, you need to store your client signing key in a secure vault like a TPM to make sure no web hacker can gain access to it. Various crypto system connectors, like the OpenSSL TPM2 and TPM2 engine, already exist but because Firefox uses its own crytographic code it can’t take advantage of them. In fact, the only external object the Firefox crypto code can use is a PKCS#11 module.

  • Mark Surman: Mozilla, AI and internet health: an update

    Last year the Mozilla team asked itself: what concrete improvements to the health of the internet do we want to tackle over the next 3–5 years?

    We looked at a number of different areas we could focus. Making the ad economy more ethical. Combating online harassment. Countering the rush to biometric everything. All worthy topics.

    As my colleague Ashley noted in her November blog post, we settled in the end on the topic of ‘better machine decision making’. This means we will focus a big part of our internet health movement building work on pushing the world of AI to be more human — and more humane.

»

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