There's great documentation on InstallTrigger here:
http://developer.mozilla.org/en/docs/Installing_Extensions_and_Themes_From_Web_Pages
Short of implementing a file release system like SourceForge, I'm not sure how 
mozdev could enforce each project-owner into publishing their download page 
with InstallTrigger.

Eric

----- Original Message ----
From: Douglas E. Warner <[EMAIL PROTECTED]>
To: project_owners@mozdev.org
Sent: Friday, July 20, 2007 7:35:26 AM
Subject: Re: [Project_owners] XPI install still vulnerable to MITM attacks on 
mozdev.org

On Friday 20 July 2007, Mook wrote:
> I'd like to point out that, for the (hopefully typical) case of a
> Firefox user clicking on a Install link and immediately installing
> (and not downloading first then install, as is the case with
> Thunderbird &c), AMO's install buttons use InstallTrigger with a hash.
>  This means that the mirror doesn't have to be secure (since the hash
> was transmitted over https, along with the page the user was seeing).
> Of course that still only protects a portion of the users...
>
> This may or may not have any bearing on what mozdev wishes to do :p

Mook,

Thanks for providing that information; I wasn't aware that there was any 
install-time security on AMO.  I'll take a look to see if it's something that 
Mozdev could implement as well.  It sounds very similar to the 
link-fingerprinting that Michael was suggesting, as well.

-Doug




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