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A comment on Email encryption on Android and iOS becomes easy with the open source app Tutanota. Parent comment

Re:Email encryption on Android and iOS becomes easy with the... by zyx321 on Thursday May 28, 2015 @09:21AM (#9617912)
The only way to change the signing key for an app (on an unrooted phone at least) is by completely uninstalling it (which deletes the main data directory) and then installing a new version. In fact, Google lost the key for their OTP authenticator app at one point, requiring all users to install the new app manually before they would receive updates again.
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Re:Email encryption on Android and iOS becomes easy with the... by alfiedotwtf on Thursday May 28, 2015 @05:53PM (#9621425)
Have you got a link? I can't find any info on that happening
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Re:Email encryption on Android and iOS becomes easy with the... by zyx321 on Friday May 29, 2015 @04:15PM (#9627012)
Couldn't find the blog post I read way back when it happened. The closest thing I could find was an Android news site describing the problem. [1]

I'm 90% sure that a Google engineer admitted it on their official blog, but that was 2 years ago so I might be misremembering it.

[1] http://www.androidpolice.com/2012/03/22/psa-googles-authenti...

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