I just saw a news story that bears on one of the perpetual questions on this newsgroup: can you be compelled to turn over your encryption key? In Doe vs. U.S. (93-523), the Supreme Court declined to rule on whether or not someone can be forced to turn over his personal appointment calendar. By doing so, they let stand an Appeals Court (2nd Circuit) that he could *not* invoke the Fifth Amendment. That court ruled that ``testimony'' was protected, but not personal papers. There was a Supreme Court ruling in 1886 protecting such papers, but that's been eroded over the years, and the Supreme Court has ruled several times that business records are not protected. And in a concurring opinion in 1986, O'Connor wrote ``The Fifth Amendment provides absolutely no protection for the contents of private papers of any kind''. --Steve Bellovin