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Posted by Unruh on March 6, 2007, 10:15 am
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>> Anonymous wrote:
>> > I have some sensitive files encrypted with GPG. I want to have the option
>> > of quickly destroying the PGP keys for those files in case the files into
>> > the wrong hands.
>> >
>> > Thumb drives look like they would be too hard to destroy. Printing the keys
>> > on paper would be easy to destroy but OCR is too unreliable.
>> >
>> > Is there some other portable media which can easily be destroyed by burning
>> > or shredding?
>>
>> The more 'easily destroyable' your key is, the more likely it will
>> accidentally be destroyed...
>True, I'm dealing with that.
>> Floppy disks may be the the answer. The innards can be accessed in a
>> fairly short time and burning would render them unreadable. Shredding
>> would render them unreadable to all but the most well-resourced attacker.
>That's a good idea, I was hoping for something pocket sized though.
>> Why not encrypt file with a standard single file encryption/ partition
>> encryption and use a strong password/passphrase? That way you will not
>> need to destry GPG keys, you just don't give the password.
>I want to be able to testify truthfully as to what the password is and have
that be useless because no keys can be found.
It is in most jurisdictions illegal to destroy evidence.
>I also want to eliminate _any_ chance of the password being cracked by keeping
the keys off of the computer which holds the files.
>> This does raise an interesting question. What _would_ be the best way to
>> store data that is secure, yet destroyable?
>I don't know. Another thought is maybe a big magnet in the office, would that
wipe out a thumb drive??
No. they are not magnetic. And besides a big magnet will not even destroy
a hard drive or floppy disk. It needs to be a very verystrong alternating
magnetic field. But fire is far more effective.
>Thanks for your reply
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