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by Hungry_Man » Thu Nov 22, 2012 6:43 pm
I enabled Two Factor Authentication via Google Authenticator. I then set my computer to not need to use Two Factor Authentication since I use it often and it doesn't leave the apartment. How is this computer trusted though? What is that based on?
In short: How does lastpass verify that "this computer" is "this computer"? IP? MAC? User ID?
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Hungry_Man
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by jonat » Thu Nov 22, 2012 10:27 pm
It stores an authentication token in "trusted storage". The method varies by OS.
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jonat
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by Hungry_Man » Thu Nov 22, 2012 10:30 pm
Are there any more details available? Specifically for Windows I suppose. How is the token generated, for example?
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Hungry_Man
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by jonat » Fri Nov 23, 2012 10:30 pm
I don't know how the token is generated. Now that I think about it some more, it seems to be some sort of ID generated by LastPass and stored on their server, since you can review a list of trusted computers in Account Settings.
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jonat
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by Hungry_Man » Sun Nov 25, 2012 5:39 pm
Yeah, it's accessible on the web server so I'm not really sure how it works. It has to be storing the identity of the computer somehow.
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Hungry_Man
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by Bubbly » Sun Nov 25, 2012 11:38 pm
Does it really matter? The important factor is that it doesn't work correctly everywhere.
I'm in another country right now and have been on the same IP for a month, I have had to reauthorize over 10 times by now.
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by Hungry_Man » Sun Nov 25, 2012 11:45 pm
As it works for me, what matters is whether it's secure or not, yes.
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Hungry_Man
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