Government actors have tried to introduce a so-called "key deposit" or "key-escrow" system, where

A. digital "keys," or activation codes, would be publicly available to those who are not able to afford anti-virus software
B. manufacturers of encryption software would have to provide the police with a key to the data being accessed
C. similar to a "Cloud" system, law enforcement agents could go to a secure website and download declassified state documents from other agencies
D. world leaders would be able to establish a secure connection (or "key") with other leaders.