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Neglecting the Lessons of Cypherpunk History

Nicola Hahn writes Over the course of the Snowden revelations there have been a number of high profile figures who've praised the merits of encryption as a remedy to the quandary of mass interception. Companies like Google and Apple have been quick to publicize their adoption of cryptographic countermeasures in an effort to maintain quarterly earnings. This marketing campaign has even convinced less credulous onlookers like Glenn Greenwald. For example, in a recent Intercept piece, Greenwald claimed:

"It is well-established that, prior to the Snowden reporting, Silicon Valley companies were secret, eager and vital participants in the growing Surveillance State. Once their role was revealed, and they perceived those disclosures threatening to their future profit-making, they instantly adopted a PR tactic of presenting themselves as Guardians of Privacy. Much of that is simply self-serving re-branding, but some of it, as I described last week, are genuine improvements in the technological means of protecting user privacy, such as the encryption products now being offered by Apple and Google, motivated by the belief that, post-Snowden, parading around as privacy protectors is necessary to stay competitive."

So, while he concedes the role of public relations in the ongoing cyber security push, Greenwald concurrently believes encryption is a "genuine" countermeasure. In other words, what we're seeing is mostly marketing hype... except for the part about strong encryption.

With regard to the promise of encryption as a privacy cure-all, history tells a markedly different story. Guarantees of security through encryption have often proven illusory, a magic act. Seeking refuge in a technical quick fix can be hazardous for a number of reasons.

18 of 103 comments (clear)

  1. Re:Yep by Travis+Mansbridge · · Score: 4, Interesting

    Even ROT13 takes some effort to solve, it's better than laying everything out over the wire in plaintext. Will it stop the NSA from reading it if they really want to? No, but it prevents it from being searchable at the press of a button from a massive index of communications.

  2. Strategic vs tactical interception by Anonymous Coward · · Score: 5, Insightful

    Crypto everywhere isn't going to stop you specifically being watched, but it will stop strategic dragnet interception, and force a return to tactical decrypts.

    1. Re:Strategic vs tactical interception by anorlunda · · Score: 3, Insightful

      Mod the parent up.

      We are trying to make bulk surveillance harder, not targeted surveillance. By bulk I mean something like 500 million devices, all to be cracked.

    2. Re:Strategic vs tactical interception by Shadow+of+Eternity · · Score: 4, Insightful

      Exactly. This is like putting a decent U-Lock on a bicycle. You're not going to make your bike unstealable, you're just going to make it not worth the effort for anyone that doesn't specifically want to steal YOUR bike with professional grade tools.

      --
      A bullet may have your name on it but splash damage is addressed "To whom it may concern."
    3. Re:Strategic vs tactical interception by gweihir · · Score: 4, Insightful

      Indeed. And the dragnet is what is exceptionally dangerous. If the NSA/CIA/GCHQ has dirt on any politician and other person when they finally get into positions of power, then they control state. What happens if intelligence agencies control a state can be seen in the former Soviet Union, former eastern Germany and current Northern Korea. These people are unable to tolerate individual freedoms or not being in total control, because they are terminally paranoid and see enemies everywhere. There is no more reliable way to establish universal Fascism than failing to limit the power of the intelligence agencies.

      --
      Most ACs are not even worth the keystrokes to insult them. Be generically insulted by this and ignored otherwise.
    4. Re:Strategic vs tactical interception by Anonymous Coward · · Score: 3, Interesting

      Yep. Cyclists certainly have learned the lesson that there is no such thing as absolute security, only relative security. The best you can do is make so the thief decides to go after someone else's bike instead. If your bike is an especially attractive target, the pros who know what they are looking for might still get it.

      And not only in this case, are the cops not doing much to stop the thieves, they're working on the same team. So really, we can't give up efforts to limit what the thieves can do.

    5. Re:Strategic vs tactical interception by jbolden · · Score: 3, Informative

      Yes it is. Apple, Microsoft and Google both have systems in places so that the data is encrypted at rest where they don't have the keys. Apple is putting things in place so that the data is not stored on their servers at all.

  3. Re:Yep by jones_supa · · Score: 5, Interesting

    A security solution does not have to be 100% perfect to still provide value.

    Let's take another example. A workstation requires pressing Ctrl-Alt-Del and typing a password to unlock the computer. You might say that it is useless protection because an attacker can just walk away with the hard drive of the computer.

    So why is the password still useful? Well, without a password, an attacker might just start locally using the computer and quickly take a look at various secret documents. If he were to grab the hard drive, it would take significantly more time, which would increase the chances of being captured by the security team.

    To get back to the topic, by using encryption you are not the lowest hanging fruit out there.

  4. Re:Respuctfully, Greenwald Is Wrong by Opportunist · · Score: 5, Interesting

    That Damocletian sword of a NSL is the biggest threat to competitiveness of the US data storage providers. On the internet, it does not matter where you store your data. Never before it mattered so little whether your datacenter is next door or in Abu Dhabi.

    As a company, would I want to have my data in the hands of a data center where I KNOW it could instantly be forced to hand it over to a government that has a record that borders on that of China when it comes to industrial espionage?

    I've been consulting with companies that wanted to outsource their data storage. They all had a list of countries where you may NOT store their data if you want to enter the bidding war, and without fail the US was on that list, along with other pinnacles of freedom like China. Iran was oddly absent from most lists, even.

    --
    We used to have a Bill of Rights. Now, with the rights gone, all we have left is the bill.
  5. Re:Yep by flowsnake · · Score: 5, Funny

    I've upgraded to ROT26 to make it twice as hard for the NSA to read my cookie recipes.

  6. TFA Misunderstands the History by PvtVoid · · Score: 5, Interesting

    TFA is correct that simply thinking that, because there is a zillion-bit crypto algorithm thrown into the communication stream, that everything is good and security is guaranteed. There are many, many attack channels that do not involve brute-forcing the crypto. Keyloggers, for example.

    But this is silly:

    Back in the 1980s and 1990s, a group of encryption mavens known as cypherpunks sought to protect individual privacy by making "strong" encryption available to everyone. To this end they successfully spread their tools far and wide such that there were those in the cypherpunk crowd who declared victory. Thanks to Edward Snowden, we know how this story actually turned out. The NSA embarked on a clandestine, industry-spanning, program of mass subversion that weakened protocols and inserted covert backdoors into a myriad of products.

    In actuality, the crypto implementations promoted by cypherpunks were exactly those that made it difficult or impossible for such a program of mass subversion to take place. Remember that the height of the cypherpunk movement was when the Clinton administration was pushing hard, really hard, for the NSA-sponsored Clipper Chip, which was, in a nutshell, crypto subverted by design and mandated by law. We now know that when the spooks found that was politically impossible, they went ahead and did it anyway, in secret. But the cypherpunk tools, most notably PGP (and later GPG, when PGP sold out and went corporate). Hell, even look at /dev/random: when it was revealed that the NSA had actually, and pretty amazingly, undermined hardware random number generators on widely available chips, /dev/random was still just fine, because it treats all sources of entropy as potentially untrustworthy, including the chip.

    The first lesson we should learn from the history of the cypherpunks is that trusting your crypto to a closed product is always, always a bad idea. That was the lesson then, and it is still the lesson now.

    The second lesson is that crypto, like any security, is all about the threat model. In that light, should we reject the widespread adoption of end-to-end crypto in commercial products? Of course not. If Apple and Google implement crypto by default, it will make efforts to dragnet information exponentially harder, even if the crypto is imperfect. This is why the spooks are beating the drum against it: it closes off that one particular threat model, which they have come to rely on. It doesn't close off other kinds of attack, but so what?

    The third lesson is that crypto, by itself, is not a panacea. Nobody ever said it was. The cypherpunk message was not that we can write PGP, declare victory, and walk away. The message was that privacy changes the relationship between the citizen and the state in beneficial ways, and that, in a technological society, we need to embrace technological means of increasing our privacy, in ways that cannot be controlled by the state.

    1. Re:TFA Misunderstands the History by PvtVoid · · Score: 4, Interesting

      It's not that cryptography has failed to bring us security, it's that the people have failed to make use of the available cryptography in the first place.

      It's worse than that. As an artist friend of mine told me recently: "Ten years ago I used to wonder how people would respond to the massive loss of privacy represented by social media. Now we know: the only thing people actually worry about is that nobody is watching."

  7. Re:Yep by gweihir · · Score: 5, Informative

    There is no indication PGP/GnuPG can be broken if used right (some minimal care needed, e.g. verifying that you have the right keys for the people you communicate with). Things like BitLocker or current Phone encryption do not deserve much trust though.

    You statement is far to generic to resemble the truth in this area. However there has been a consistent push behind your view from some quarters that can only be interpreted as a "don't use encryption, it does not help anyways" disinformation campaign. This is a rather strong indicator that even known-bad encryption like SSL makes things at least more difficult for the surveillance-fascists.

    --
    Most ACs are not even worth the keystrokes to insult them. Be generically insulted by this and ignored otherwise.
  8. Re:Respuctfully, Greenwald Is Wrong by gweihir · · Score: 5, Informative

    Wrong. NSLs are "after the fact". Encryption is before. An NSL is also a _legal_ measure, while encryption is a _mathematical_ one. Guess what has more power to influence reality. If Apple and Google cannot break their encryption, then they cannot break their encryption, and no number of NSLs is going to change that. At the same time they cannot be forced to put backdoors into their products as that decreases product quality. The analogy to Lavabit is faulty, as Lavabit had the keys and could break its encryption.

    --
    Most ACs are not even worth the keystrokes to insult them. Be generically insulted by this and ignored otherwise.
  9. Encryption is not the answer by Anonymous Coward · · Score: 4, Insightful

    In the current political environment, encryption is not the answer. If you've been paying attention, there have been a number cases where a person was ordered to unlock the contents of a laptop or other device under the threat of being put in prison if they refuse. And that is the real problem. If you create some super-duper-encryption that is impossible to break, the various corrupt government agencies will simply declare you to be a terrorist, who can't possibly have any legitimate need for that encryption, and you will be ordered to decrypt or go to prison, and nobody will even know you are in prison thanks to secret laws enforced by secret courts.

    Until THAT issue is addressed, encryption truly is just snake oil and feel-good public relations.

  10. This is not about cryptography by davide+marney · · Score: 3, Insightful

    The author says that "cryptography is underhanded", but you will look in vain to find any technical meaning of that phrase anywhere in the article. What he really means is that the major corporations (Google, Apple, et al.) are underhanded because they are working with state spies to cripple algorithms and put in back doors, etc.

    But trying to cripple cryptography this is something we already are aware of, and there are ways to shore up the technology to make it much, much harder for government to spy on us in bulk. Even using weak, crippled cryptography forces the spies to expend computing resources. Cryptography is all about raising the cost of spying, when dealing with government, not with preventing spying.

    --
    "We receive as friendly that which agrees with, we resist with dislike that which opposes us" - Faraday
  11. Re:Computers are compromised by design by AHuxley · · Score: 4, Insightful

    Re "True, there are numerous ways to hide things, but if you intend to make it secure and you do understand the system because you designed it, it is quite possible to make it secure"
    The device and the network has origins with the Communications Assistance for Law Enforcement Act.
    https://en.wikipedia.org/wiki/...
    Trying to build a better app over that voice, text and network logging ready system is interesting.
    An app can encrypt but the data has to be entered?
    Get the plain text as it is entered? Then the new app can be as powerful as it wants and totally tested. The plain text is still ready on any network.

    --
    Domestic spying is now "Benign Information Gathering"
  12. Re:Yep by mariox19 · · Score: 3, Insightful

    I am far from being an expert on encryption, but the danger is not that PGP will be broken; it's that there are weaknesses in the entire "ecosystem" that allow for side-channel attacks. That's part of what that NSA paper, linked to in the article, is discussing. If there is something that can be exploited in the user's operating system or in the hardware, then that becomes the weak link in the chain.

    Then, there is the whole issue that you touch on: namely, the caveat of encryption's efficacy "if used right." The same is true of condoms and even oral contraceptives. Sadly, human beings are very bad at scrupulously adhering to the injunction to "use as directed."

    --

    quiquid id est, timeo puellas et oscula dantes.