Here (Sydney Australia) the penalty for refusing a roadside alcohol test is the same as the top range blood alcohol penalty. So you can refuse a test, and they'll penalise you assuming the worst-case result you could have produced.
I'm guessing this guy is in a quite perplexing quandary - he's betting on whether they'll keep him in jail for as long for refusing to decrypt the drives as they would for the crimes that decrypting the drives expose?
(At least I _hope_ that's his quandary - I sincerely hope the reality isn't that he's genuinely forgotten the passwords, and when the FBI/NSA _finally_ bruteforce it, they end up with baby photos, teenaged angst poetry, and a few bittorrented Hollywood movies... That does, at least, seem quite unlikely...)
It is quite a quandary :(
Might not help him if they believe that the encrypted keyless fragments is enough (which would be a horrible legal argument).
But LEA are selecting nodes based on the hashes of those fragments. Many of them won't have cached CP fragments, but merely relayed them. But if his node did, prosecutors could argue that they've identified CP on his computer based on hashes, and have experts testify about reliability, etc. How many jurors would understand Freenet design?
In fact, it seems dangerous for the judge to be able to jail anyone without a jury verdict. It seems to bypass legal protections.
The standard is not "100% proof". Perhaps you should learn something about the legal system.
Oh, but you see, little Timmy was actually being telepathically controlled by a diabetic alien about to pass out from hypoglycemia, who had him steal the candy bar. Can you prove this was not the case?
This is what reasonable doubt protects against. There will always be the ability to create a (probably fanciful) scenario in which the defendant is not guilty. An unreasonable scenario, one might even say. Being able to convince the jury beyond reasonable doubt is as close to 100% proof as you are reasonably going to ever get.
> Beyond "the shadow of a doubt" is sometimes used interchangeably with beyond reasonable doubt, but this extends beyond the latter, to the extent that it may be considered an impossible standard. The term "reasonable doubt" is therefore used. [Emphasis mine]
If you want to insist that "100% proof" and reasonable doubt are the same, that's of course your choice. I think you'll find that people will tend to disagree with you.
"I doubt that, because a fairy whispered something to me in my sleep."
Not even close.
"Innocent until proven guilty" is the foundation of our legal system