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Re:US Customs block Canadian man after reading his Scruff pr... by struppi on Wednesday February 22, 2017 @01:53AM (#13703664)
First, IANAL, and I am not an expert for the situation in the US. So you're probably right.

But in the UK, you can go to jail for not disclosing your cryptographic keys. https://en.wikipedia.org/wiki/Key_disclosure_law#United_King...

Here is a story of a person who went to jail for not disclosing his keys: http://www.theregister.co.uk/2009/11/24/ripa_jfl/?page=1 He said he kept silent "because of principle", but I guess he might also have gone to jail if he told them "I don't remember" - Officers would not believe him anyway.

Re:US Customs block Canadian man after reading his Scruff pr... by lmm on Wednesday February 22, 2017 @03:05AM (#13703983)
The prosecution has to show that you know the keys to convict you under that law.
Re:US Customs block Canadian man after reading his Scruff pr... by bonzini on Wednesday February 22, 2017 @03:07AM (#13703993)
Even in the UK the two situations are different. In the cases you cited, not surrendering passwords is considered to be contempt of court. At a border, you might be denied entry, which is bad, but that's it.