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Re: [rdiff-backup-users] backing up a Bitcoin wallet (private key)

From: Dominic Raferd
Subject: Re: [rdiff-backup-users] backing up a Bitcoin wallet (private key)
Date: Mon, 09 Dec 2013 17:19:26 +0000
User-agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.1.1

On 09/12/2013 16:48, Grant wrote:
I was planning to back up my Bitcoin wallet (private key) along with
the rest of my system backups which are versioned by rdiff-backup.
However, it occurred to me that if the password with which my wallet
is encrypted is deemed non-secure at some point and I change that
password, the rdiff-backup repository will still contain the private
key encrypted with the non-secure password.

Am I thinking this through correctly?  If so, can I delete all
versions of a particular file from an rdiff-backup repository?

- Grant

I think it could be a problem yes because the whole point of rdiff-backup is to be able to recover the old version files, and if this old file version is insecure *and a malefactor gains access to your repository* then said malefactor can get the file contents.

And I don't believe there is any official or safe way to a delete a single file from a repository. The workaround is to exclude this file from your normal rdiff-backup and then do a separate rdiff-backup run into a separate repository just for this file. Then you could always in the future delete this whole (single-file-based) repository, or delete some old history in this repository, without losing your older file history for other files (which would be in the other repository).

Bear in mind that rdiff-backup was not designed with security as a consideration (by contrast, duplicity *was*); still I think the workaround above should give you what you need.

HTH, Dominic

*TimeDicer* <http://www.timedicer.co.uk>: Free File Recovery from Whenever

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