How Encryption Works - and How It Can Be Bypassed

The debate between privacy and national security has never been more heated, with Apple and other tech firms going up against the government. So how are text messages encrypted, and what are the controversial "backdoors" that could allow access to them? Subscribe to the WSJ channel here: http://bit.ly/14Q81Xy More from the Wall Street Journal: Visit WSJ.com: http://www.wsj.com Follow WSJ on Facebook:   / wsjvideo   Follow WSJ on Google+: https://plus.google.com/+wsj/posts Follow WSJ on Twitter:   / wsjvideo   Follow WSJ on Instagram:   / wsj   Follow WSJ on Pinterest:   / wsj   Don’t miss a WSJ video, subscribe here: http://bit.ly/14Q81Xy More from the Wall Street Journal: Visit WSJ.com: http://www.wsj.com Visit the WSJ Video Center: https://wsj.com/video On Facebook:   / videos   On Twitter:   / wsj   On Snapchat: https://on.wsj.com/2ratjSM