> There is no reasonable expectation that this would require a significant effort or testimony on his part. Whether or not this is true is precisely the crux o

> There is no reasonable expectation that this would require a significant effort or testimony on his part. Whether or not this is true is precisely the crux of the matter. Your comment echoes the government's position: Decrypting the hard disk is not equivalent to testimony, and is therefore not protected by the fifth. The defence and EFF's amicus brief argue instead that we live in a world where our phones and computers are effectively an extension of ourselves, and asking to decrypt those is equivalent to forcing you to testify on your most intimate secrets, which is most certainly not kosher.