At the time Singh wrote the novel, there was no blatant reason for the government to use surveillance for the interest of national security. Then September 11, 2001 happened. This day completely changed the interests of both the American citizens and the government. After this terrorist attack, people were willing to give up their privacy in order to achieve more security. I am not saying that the government should have complete control over all communications all the time. What I am saying is that the government should have substantial surveillance over communications in order to prevent other significant threats to the citizens of the United States.
In times of fear, people are willing to give up some of their privacy in order to feel safer. The thing is, cryptography should not disappear. Cryptography will only keep improving, and there is little to nothing that the government can do to slow it down. What the government, mainly the NSA, can do is keep its cryptanalysis above and better than the cryptography present at the time. Then the government can use its cryptanalysis in order to analyze and read encrypted messages. The government used wiretapping in the 1920s, but its new weapon is code breaking. Of course, citizens will always want their information to be private, but with the new information age, the government can use data mining and break through encryptions in order to evaluate certain suspects without any normal computer user ever noticing. The government can give people the illusion of privacy while also providing them with the reality of security.
It’s not so much whether the government can have wide latitude but what it can do with its wide latitude. For all we as normal citizens of the nation know, the government can read any and all of our messages. The government has the technology to break into almost any kind of encryption with its super computers, so as long as the government stays within its boundaries of security and does not blatantly invade its citizens’ privacy, it can continue to successfully use its array of electronic surveillance.