Interesting case here: http://news.cnet.com/8301-31921_3-20078312-281/doj-we-can-force-you-to-decrypt-that-laptop/
In brief, the feds are demanding authority to compel a suspect in a case involving a mortgage fraud case to decrypt a hard drive that they believe may contain evidence. It seems to boil down to whether the encryption key is comparable to a physical key, or if that code is more testimonial in nature, and thereby protected by the Fifth Amendment.
See also: http://www.crimlaw.blogspot.com/
In brief, the feds are demanding authority to compel a suspect in a case involving a mortgage fraud case to decrypt a hard drive that they believe may contain evidence. It seems to boil down to whether the encryption key is comparable to a physical key, or if that code is more testimonial in nature, and thereby protected by the Fifth Amendment.
See also: http://www.crimlaw.blogspot.com/