{"id":4261,"date":"2016-01-12T17:14:43","date_gmt":"2016-01-12T22:14:43","guid":{"rendered":"https:\/\/engineering.jhu.edu\/magazine-archive\/?p=4261"},"modified":"2016-01-12T17:14:43","modified_gmt":"2016-01-12T22:14:43","slug":"back-talk","status":"publish","type":"post","link":"https:\/\/engineering.jhu.edu\/magazine-archive\/2016\/01\/back-talk\/","title":{"rendered":"Why \u2018Back Doors\u2019 Are a Bad Idea"},"content":{"rendered":"

\"Why<\/a><\/strong>\u2026 and why continued debate leaves us vulnerable.<\/em><\/p>\n

For the first time in history, the technology industry has achieved a longtime dream of restoring user privacy through widespread access to encryption technology. But the reaction from governments has been a near panic. FBI director James Comey recently took his case to Congress, arguing that this technology risks assisting terrorist groups like ISIS. Law enforcement agencies in the U.S. and abroad have publicly mooted the addition of some sort of \u201cback door\u201d that would give them access to Silicon Valley\u2019s encryption.<\/p>\n

Indeed, law enforcement has been so vocal in its concerns that it would be reasonable for a nontechnical reader to conclude encryption is some sort of radical idea. But this is hardly the case. The reason for deploying end-to-end encryption has nothing to do with ISIS; it\u2019s fundamentally about securing our online systems\u2014systems that, if the news is any indication, are more insecure than they ever have been.<\/p>\n

From the beginning of electronic communications until the 1990s, most data was transmitted unencrypted and over relatively insecure communication lines.<\/p>\n

But promises of good behavior that work well in a network with several dozen machines are less than worthless on a global network with billions of connected machines\u2014many of which are actively controlled by organized criminals. To work in this modern world, security engineers have adopted a single maxim: Treat the network as hostile. We assume that every machine and network connection we don\u2019t actively trust is trying to harm us.<\/p>\n

Fundamentally, encryption allows us to \u201cextend trust\u201d from one small trusted location to another, regardless of what lies between.<\/p>\n

Law enforcement agencies are not against<\/em> strong encryption. What they ask is a bit subtler: They\u2019d like a new form of encryption that\u2019s strong against everybody but law enforcement. Proponents of this approach would see all encryption technology equipped with a \u201cback door\u201d that could be restricted only to lawful requests. If this encryption was deployed, they argue, law enforcement and digital security could peacefully coexist.<\/p>\n

It\u2019s a beautiful dream. It just seems extraordinarily difficult to realize, at least at the scale required. The technical reasons for this are many and varied, but rather than re-hash this debate, I would make a different point: Until the issue is resolved with concrete technical proposals, even the \u201cdebate\u201d itself is doing damage.<\/p>\n

From the point of view of U.S. companies, there already exists a readily available technique for building \u201cback doors\u201d that is inexpensive and easy to deploy today. And that technique is to avoid deploying end-to-end encryption<\/em> in the first place. The uncertainty created by the current Washington debate, combined with the lack of any concrete technical proposal, is, in fact, already motivating companies to avoid deploying such encryption.<\/p>\n

And this may seem just fine by you if your concern is limited to simplifying the task of law enforcement. But if you think more about the security of U.S. information systems, it\u2019s an absolute tragedy. The primary lesson we\u2019ve learned over the past several years is that our current security measures are fundamentally not up to the task of keeping corporate and government secrets out of the hands of motivated attackers. The losses we\u2019ve sustained so far are likely only the beginning.<\/p>\n

By prolonging this debate any longer and failing to offer up concrete technical solutions, our own governments may be dooming us to another decade of poor security. This is a price we can\u2019t afford to pay.<\/p>\n

 <\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

\u2026 and why continued debate leaves us vulnerable. For the first time in history, the technology industry has achieved a longtime dream of restoring user privacy through widespread access to encryption technology. But the reaction from governments has been a near panic. FBI director James Comey recently took his case to Congress, arguing that this…<\/p>\n","protected":false},"author":6,"featured_media":4372,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[27],"tags":[119,254,255,256,257,258,259,260],"class_list":["post-4261","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-back-talk","tag-department-of-computer-science","tag-matthew-d-green","tag-johns-hopkins-university-information-security-institute","tag-back-doors","tag-fbi","tag-cybersecurity","tag-isis","tag-encryption","issue-winter-2016"],"acf":[],"yoast_head":"\nWhy \u2018Back Doors\u2019 Are a Bad Idea - JHU Engineering Magazine<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/engineering.jhu.edu\/magazine-archive\/2016\/01\/back-talk\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Why \u2018Back Doors\u2019 Are a Bad Idea - JHU Engineering Magazine\" \/>\n<meta property=\"og:description\" content=\"\u2026 and why continued debate leaves us vulnerable. 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