Uses and Abuses of Technical Protection Measures (TPMs)

By Russell McOrmond (Please see dynamic version that is periodically updated).

When reading the 1996 WIPO treaties (WPPT and WCT), there is an assumption that these treaties require legal protection for controversial types of DRM (Digital Restrictions Management). These are technologies which excessively control and/or monitor the private activities and choices of technology users, attacking their privacy, property and other rights.

If instead of assuming the suggested changes be made to the copyright act we make changes in other acts, I believe it is possible to protect the legitimate uses of technical measures without protecting the abuses.

As you read the following analysis, keep in mind the wording used in the WIPO Copyright Treaty article 11, Obligations concerning Technological Measures.

Contracting Parties shall provide adequate legal protection and effective legal remedies against the circumvention of effective technological measures that are used by authors in connection with the exercise of their rights under this Treaty or the Berne Convention and that restrict acts, in respect of their works, which are not authorized by the authors concerned or permitted by law.

I am looking for feedback on this analysis, and hoping that someone from the copyright legal and policy communities could give it some consideration.

Appropriate uses of technical measures

Authors have many legitimate uses for technical measures. An example would be a website or other network service where they wish to limit access to subscribers. Using the digital locks analogy, a subscriber would have a key which would allow them to prove that they are a subscriber (provide authentication). Keys would also be used to make private the conversation between the subscriber and the copyright holder, protecting from any third party eavesdropper who might otherwise be able to receive information without authorization.

If protection from an eavesdropper is not considered important, an access control can be as simple as a password.

This is an important use of technical measures by authors and/or copyright holders (most copyright is held by corporations and not the authors). This is what is required for copyright holders to differentiate between providing of information to subscribers, where a royalty fee can be expected, and the parts of the Internet where the audience is anonymous (unknown) and thus the expectation and collection of a royalty fee is not reasonable.

Many media companies provide free subscriptions to online services. In this case the intent is not to charge a royalty for access, but to use technology to appropriately indicate that third parties such as Google or are not authorized to make copies, archive or index the content.

There are currently discussions about the attempt by Access Copyright to add a levy to the Internet. The claim from Access Copyright is that their members do not wish to use appropriate technical methods to indicate that royalties may be expected, but want to extract a levy anyway. I have written letters to the provincial Ministers of Education about this issue, as well as trying to expose this special interest thinking. Access Copyright is best understood as an administrative body for a very narrow business model that is most often inappropriate for use on the Internet.

There are other types of technical measures, such as digital watermarking, which can be used in identifying objects.

If you look closely at the legitimate uses of technical measures by copyright holders, they do not differ from what other Canadians may use this technology for. These technical measures protect the privacy of Canadians, and provide identifying information for people or objects.

In order to offer legal weight to these technical measures it would be appropriate to add them to legislation that deals with privacy and identity. Examples would be to modernize our federal and provincial privacy legislation, to enhance legislation to protect digital signatures for contracts, and so-on.

Abuses of technical measures

Many people do not consider the controversial abuses of technical measures to be related to copyright at all. Examples include the use of access control technical measures to tie the use of digital content to specifically branded access tools which contain the keys, or government mandated detection of watermarks or "flags" (such as the controversial Broadcast Flag) which would mean that technology creators would need to ask permission from regulators to add features to their technology.

These abuses of technical measures are always easy to circumvent for a technically sophisticated person. While these measures are always ineffective, they do have considerable harmful consequences for law-abiding citizens. (For more details on why access controls will not deter copyright infringement, see my letter to Scott Simms, MP, about Bill C-60)

It is important to recognize the difference between an abuse of an access control and the legitimate uses discussed earlier. A TPM protecting the communication between a copyright holder and a subscriber has three parties: the sender of information (copyright holder), the authorized recipient of information (subscriber), and a third party attacker. The technical measures exist to protect against the attacker.

In the case of the abuses there are only two entities: the sender and an authorized recipient who is claimed to also be the attacker. While technical measures are important to protect against third party attackers, only traditional copyright law can protect a copyright holder from the unlawful activities of an authorized recipient.

One way to understand the harm of allowing access controls which mandate specific brands of access tools one must turn to economic analysis. The technique being used is very similar to the techniques discussed in section 77 of our Competition Act under exclusive dealing and tied selling. Rather than keys being provided to authorized recipients of content, the keys are instead embedded within "authorized" tools. This creates a new type of regulation that never existed in copyright before, the ability to control exactly which tools are used to access content.

Michael Geist provides detail on the competition policy implications of technical protection measures in chapter 7 of In the Public Interest: The Future of Canadian Copyright Law.

This abuse of TPMs has some monopolistic entity that manages the digital keys used to lock and unlock content. While some copyright holders assume that they will control these keys, this will not be the case. Copyright holders would need to negotiate to have their individual keys embedded within all "authorized" access tools. Given it will be near impossible for them to successfully negotiate this, the entity that controls the keys will certainly be a third party technology provider.

Before offering keys, this technology provider will have contracts with copyright holders who wish to lock their content, and also with tool creators/manufacturers who wish to unlock content. This technology provider will quickly be in a market conditions to be able to dictate terms to both copyright holders and tool creators, and will be able to refuse keys to competitors or anyone else who does
not protect their private monopoly interests.

It is important for copyright holders to realize that this monopolistic behaviour will harm their interests as much (if not more) than those of their audiences. Understanding this effect, it is hard to understand why the "Canadian" Recording Industry Association (CRIA) is lobbying to have legal protection for TPMs added to copyright law, rather than lobbying to be protected from abuses of TPMs.

The recording industry cartel currently makes its money through a stronghold on the methods of distribution and marketing for recorded music. DRM technology providers will be able to easily replace that traditional roll. This means DRM vendors such as Apple, Microsoft, IBM, Intel, Matsushita, or Toshiba will eventually replace CRIA members such as EMI (UK), Universal Music Group (France), Warner Music Group (WMG - US), or Sony BMG Music (US). (We should always remember how little "Canadian" content there is in the self-called "Canadian" recording industry association).

Authors using modern methods of production, distribution and funding of software such as those using Free/Libre and Open Source Software (FLOSS) licensing will be systematically excluded. The features of FLOSS may not yet be familiar to everyone, but are no more radical a requirement for software than Access to Information laws are for governments. With FLOSS the users' (and follow-on authors) freedom to run, copy, distribute, study, change and improve the software ensures that owners of digital devices are able to be in control of their own technology through being able to control the software. Since the purpose of access control TPMs is to provide digital keys to tool creators who agree to not allow the owner of the device to be in control, this abuse of TPMs is incompatible with the transparency and accountability of FLOSS.

Another type of abuse of technical measure could have worse consequences, and that is a government mandate that recording devices be "disabled" if they detect watermarks or other "flags". The intent is obvious: someone trying to record a movie in a theatre or trying to record a program from their television or the radio would be stopped by the technology from doing so. Copyright is far too complex to automate in this way, and just because a watermark exists does not in any way indicate that recording would be an infringement.

Take an example entirely outside of copyright. If a criminal (or the government) wished to hide activities from the police or journalists they could simply wear devices that would broadcast watermarks. When a camera is pointed at the controversial event it would automatically be "disabled" as soon as it detected the watermark. There are many times where the ability to record things without the permission of the subject is critical to law enforcement or the accountability of government. It is also not just journalists and police that need unencumbered recording devices, given it is often private citizens or accidental recordings that are used to expose important events.

I believe it should be obvious that the unintended consequences of this type of regulation are far more harmful to the public interest than any amount of copyright infringement.

Regardless of the type of abuse of a TPM it is important to remember that the regulation will only affect the activities of law abiding citizens. A technically sophisticated lawbreaker will always be able to trivially extract keys or otherwise modify technology to remove any limits. Once one person out of the 6.5+ billion people have disabled a TPM (decoded content, modified a camera) it is then possible for a non-technically sophisticated person to make use of the result.

It is only traditional copyright law that can protect the rights of copyright holders, and any legal protection for these abuses of TPMs will harm the interests of copyright holders and the general public far more than it could theoretically help them.

Providing legal protection from abuses of technical measures

Far from something which Canadian law should protect, Canadians should instead be protected from abuses of technical measures. We should have laws which positively protect our property rights in the communications tools that we purchase, which would include being able to be in control of these tools for legal purposes. Never before in our history has the limited monopoly of copyright allowed copyright holders to dictate any aspect of access, whether that be unauthorized use of contact lenses or glasses while reading a traditional book, or what brands of software we use to read an e-Book.

We should have laws which positively protect our privacy rights, including from abuses of TPMs which spy on audiences without their clear permission.

The interests of users of technology are protected by having a healthy free market, not allowing any technology provider to abuse a dominant position to control and/or monitor the legitimate activities of Canadians. There should be a protected right for software authors to reverse engineer existing software to create compatible software. Copyright and patents should be excluded from interfaces, whether they be programming interfaces, user interfaces, file formats, communications protocols or interfaces with hardware.

There should be an explicit prohibition against the use of technical measures to limit access to copyright works to specific access tools. There should be a positive right to circumvent DRM for non-infringing purposes. This right must include the right to create, distribute and sell software (sometimes called a "device", a "product" or a "service" depending on context) to help other people to express these rights, and for these authors of multi-purpose tools to not be liable for any potentially infringing uses by third parties.

Since the legitimate uses for technical measures are not unique to copyright holders, and the abuses should be prohibited, technical measures should not be protected in a copyright act at all. Technical measures should only be protected in appropriate legislation that protects privacy and authenticity (identity), including legislation to give legal weight and protection to digital signatures.

Suggestions to the Canadian Government

I believe that Canada should reject the 1996 WIPO treaties, as this laundered policy overly-protects legacy methods of production, distribution and funding of creativity against modern competition. These treaties also attacks our legitimate property rights in content and communications technology which we have legally purchased.

Canada should be joining with the countries that support the WIPO Development Agenda, working to set more appropriate international copyright norms.

Contrary to the opinion of some, we are under no obligations to ratify these treaties. It is quite normal for a country to sign a treaty indicating interest and then decide at a later date that the treaty is not in the interests of that country.

Considerable pressure is being exerted from the United States on Canada to not only ratify these treaties, but to use the US implementation as the model. We need to remember that this is the same country that has not ratified the norms for international law such as the International Court of Justice or the International Criminal court, nor have they ratified other far more important treaties such as the Ottawa Convention on Landmines or the Kyoto protocol.

I believe it is a case of misguided priorities to feel pressure from the United States who has signed (but not ratified or withdrawn) Kyoto, and never signed the Landmines treaty. We should not ratify WIPO treaties simply because we signed them, but only if these treaties are in the best interests of Canadians (including Canadian authors) which I strongly believe they are not.

I believe that if parliament gives in to the pressure to ratify these treaties that it is still possible to follow the letter of the treaty in regard to TPMs and provide legal protection for the legitimate uses of TPMs, while at the same time protecting Canadians from the harmful abuses.

(See also: Legal protection for TPMs has no place in copyright law )

If you agree that Canadians should be protected from abuses of TPMs, please write your member of parliament and tell them. Parliamentarians should be encouraged to reject Bill C-60 and direct policy makers to come back with appropriate modernizing copyright legislation. If you have not yet signed the Petition for Users' Rights, please do so.

This work is licensed under a Creative Commons Attribution 2.0 Canada License.


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