Judge: Man can't be forced to divulge encryption passwordIn a response to my last post, someone asked my opinion on the article linked above. To summarize the facts, a gentleman was attempting to cross the border from Canada with a laptop that is alleged to have included a significant amount of pedophilic materials. The agents saw the alleged images during a consensual search, and immediately arrested the suspect and took the laptop into custody. However, after securing a warrant 14 days later to perform a full, in-depth search of the laptop, the officers found that the drive that they suspected to contain the illegal materials was
PGP-encrypted, and inaccessible without the password.
The grand jury considering the indictment issued a subpoena requesting the password, and the suspect moved to quash the subpoena. The District Court magistrate indeed
quashed the subpoena, basing his decision on the idea that entering the password would somehow be "testimonial" in nature.
To provide a bit of background, there are many things that one may be legally compelled to provide to police without violating the Fifth Amendment protection against self-incrimination. These include fingerprints, DNA, and the such. It was the magistrate's opinion that producing the password "would be disclosing the fact that he knows the password and has
control over the files" on the computer.
In the abstract, this would seem perfectly rational, as the established test for testimonial statements or actions includes actions that indicate some form of control over the evidence. However, it doesn't appear in any of the documentation that the defendants' control over the evidence is at issue here - it seems clear that he has acknowledged that this is in fact his laptop, and from other statements (presumably under
Miranda warnings) that he knows that there may be illegal materials on his hard drive (his excuse is that he downloaded bulks of files from newsgroups, and could not be certain all of it was legal).
Further, the court completely discounts the government's attempts to liken the passphrase to a physical key, and instead concludes that disclosing the passphrase somehow "conveys the contents of one's mind". Again, in the abstract, such a passphrase is in fact within the "contents of one's mind", but then again, so is the location of a physical key (assuming the key is not on the person of the suspect at the time).
I think the analysis here is far simpler than the court is willing to accept. The fact that there is a password is known. The fact that the laptop belongs to or has been under the control of the defendant is undisputed. That the contents of the drive were "locked" is identical to someone throwing documents into a wall safe and closing the door. The fact that the defendant knows there is a passphrase, and even that he knows what the passphrase is does not mean that he implcitly knows all of the contents of the laptop that may be protected by the encryption. Producing the passphrase should not be seen as testimonial, and in addition, the fact that he produced the passphrase could be excluded as evidence at trial.
The crime is not encrypting the drive - the crime is what was hidden when the drive was encrypted. This isn't a good set of facts to change existing precedent. A password is a key, simply located in the mind rather than as a physical object. Would the court deny the combination to a lock for the same reasons?