Did NSA leave itself a back door?

摘要

Is there any better indication of how far our freedoms have eroded than the frequency and vigor with which security experts question the means and motivation behind U.S. government actions purportedly intended to keep us safe? Suspicion of the government has always been natural, of course, but today it has become — quite rightfully — a defense mechanism of the first order. The latest example comes from the field of cryptography: Security consultant Bruce Schneier, leaning on analyses from other experts, last week questioned why one of four government-sanctioned random-number generators — the one "three orders of magnitude slower than its peers"— includes what "can only be described as a back door."