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Old 01-10-2017, 01:40 AM #17
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Default Re: Good external drive for backups, but rarely used.

That would become quite problematic indeed.

Truecrypt is a very strange story, and the reasons support and development stopped are still unclear. It did pass some security audits though, and law enforcement reported difficulty decrypting these volumes without extracting they key for the suspect (which can be quite hard if the suspect is say, dead as a doornail).

7 zip has had some recent issues too, though they have apparently been patched (no proper proof of that).

But an important thing to notice with vulnerabilities is how bad they are, or are not. No vulnerabilities have been reported in either truecrypt or 7zip that would allow you to access a volume or file quickly as long as the passphrase is decent.

Even if there was a severe vulnerability that reduced cracking effort by 2^20 (a million times), something that would normally talk a million years to decrypt on a desktop computer would still be safe from oppurtunistic hackers (that will not spend a full year hacking into something they don't know contains something very valuable). Sure the NSA coud crack it quickly with some effort, but that's not the enemy most people have.

And in case you worry about that million years extra: make your passphrase 4 characters longer, that'd easily overcome any brute force attempt even if the encryption is compromised by 2^20.


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Old Today, 04:29 AM #18
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Default Re: Good external drive for backups, but rarely used.

Yeah, the TrueCrypt story is indeed strange, with theories about him leaving encoded messages saying that it's been compromised and stuff. My personal thoughts are that he was threatened because it was too hard to crack, had measures that provided reasonable doubt (hidden volumes, etc.), and could be used for free virtually anywhere. It made it just too easy for anyone to hide their stuff.

At least with Microsoft's BitLocker, which was suggested by the TC website after the software was taken down, they might have some sort of backdoor or something, and no such thing as hidden volumes, etc. Hell, Microsoft allows the NSA to wiretap Skype and probably bought Skype at their behest.

I thought it was pretty suspicious how the TC software was just outright taken down, not even just archived and not supported anymore. They suggested using Bitlocker instead, claiming that the only reason TC was created was to provide desktop encryption, which seems like a huge stretch.

I'd probably use Truecrypt and break it down across smaller parts. Then create some PAR2 recovery volumes should parts of the set become corrupted.
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