Warum darf der Staat keine Hintertüren bei Verschlüsselung haben?

Weil selbst der NSA Chef sagt das Hintertüren in Verschlüsselungsmethoden die Sicherheit einschränken.

Frage eines Senators:

As a general matter, is it correct that anytime there are copies of an encryption key — and they exist in multiple places — that also creates more opportunities for malicious actors or foreign hackers to get access to the keys?”

Antwort NSA Chef Admiral Mike Rogers:

It depends on the circumstances, but if you want to paint it very broadly like that for a yes and no, then I would probably say yes.