FBI Director James Comey is set to testify against encryption before the Senate Intelligence Committee today. Encryption refers to the scrambling of communications so they can’t be intercepted and read without a key or password. The FBI and British intelligence have been pushing for expanded access to encrypted data. Fourteen of the world’s pre-eminent cryptographers, computer scientists and security specialists have issued a paper opposing the push; we’ll speak with one of them, Bruce Schneier, later in the broadcast.