Lucy Nicholson/Reuters
To Cook, it doesn't have to be one or the other.
"I don't believe that the tradeoff here is privacy versus national security," Cook said during an interview on "60 Minutes".
"We're America. We should have both."
People are using their iPhones to store private sensitive information, like their health and finances. Even conversations with friends or confidential business secrets should be able to be stored securely on an iPhone, Cook believes.
"You should have the ability to protect it. And the only way we know how to do that is to encrypt," Cook said.
The National Security Agency and government officials have been arguing that encryption was a matter of natural security - a trade-off Cook clearly doesn't buy. Government officials want Apple and other tech companies to install a "backdoor" for law agencies to be able to access and read encrypted messages.
Right now, if a government agency gives Apple a proper warrant, they will hand over what they have. But if the information is encrypted, like private messages, Apple simply may not have the information to give them.
Apple is happy to comply with the government's warrants, but it stops short of welcoming them into its users private, encrypted messages.
"The reality is that if you put a backdoor in, then it becomes a backdoor for everybody, good or bad," Cook said.