Backup of encrypted private key on uncontrolled disks
shea at shealevy.com
Thu Nov 20 17:54:38 CET 2014
Hmm, I’m having a hard time imagining how someone could get me to divulge the passphrase if they couldn’t also get me to hand over the key backups I own. Of course, my imagination is not the limit here, so is there something I’m missing?
> On Nov 20, 2014, at 11:27 AM, Robert J. Hansen <rjh at sixdemonbag.org> wrote:
>> My private key is encrypted with a very strong passphrase (10 word
>> diceware , not written down, 129 bits of entropy). Given that, is it
>> safe to back it up on disks I don't control, such as a private S3 bucket
>> or a VPS? My intuition says yes, but I've learned to never trust my
>> intuition when it comes to security.
> If you are completely confident that no one will ever get your passphrase from you, this is safe. Otherwise, it's not.
> It may be appropriate to have a little caution with respect to whether you believe anyone will ever get your passphrase from you.
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