11th Circuit Rules that Full Immunity Is Required for Compelled Decryption

The 11th Circuit just decided In re Grand Jury Subpoena Duces Tecum March 25, 2011, USA v. John Doe.

Doe was ordered to decrypt his hard drive, and given limited immunity (use immunity) regarding the act of production of the unencrypted contents. He refused, claiming that the immunity was insufficient, and also that he was not in fact able to decrypt the hard drives.

We turn now to the merits of Doe’s appeal. In compelling Doe to produce the unencrypted contents of the hard drives and then in holding him in contempt for failing to do so, the district court concluded that the Government’s use of the unencrypted contents in a prosecution against Doe would not constitute the derivative use of compelled testimony protected by the Fifth Amendment privilege against self-incrimination. This is so, the court thought,because Doe’s decryption and production of the hard drives would not constitute “testimony.” And although that was the Government’s view as well, the Government nonetheless requested act-of-production immunity.13 The district court granted this request.

For the reasons that follow, we hold that Doe’s decryption and production of the hard drives’ contents would trigger Fifth Amendment protection because it would be testimonial, and that such protection would extend to the Government’s use of the drives’ contents. The district court therefore erred in two respects. First, it erred in concluding that Doe’s act of decryption and production would not constitute testimony. Second, in granting Doe immunity, it erred in limiting his immunity, under 18 U.S.C. §§ 6002 and 6003, to the Government’s use of his act of decryption and production, but allowing the Government derivative use of the evidence such act disclosed.

It’s a well-argued opinion and could be influential.