Demanding keys would conflict with the 5th Amendment; in the few cases that I&#x27;m aware of[1][2] where a defendant was successfully compelled to decrypt their files, the suspect had either already demonstrated that the evidence was in their possession and thus given up their right to self- incriminate or been granted immunity.  Also, with end-to-end encryption law enforcement won&#x27;t be able to decrypt regardless of whether or not they have a warrant, and they need a warrant to initiate a wiretap to begin with.<p>[1] <a href="https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=9663447" rel="nofollow">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=9663447</a><p>[2] <a href="https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=9663378" rel="nofollow">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=9663378</a>