This post seems like it was argued in good faith, there were a couple of examples given besides the banking one. I think the issue here is that while cryptograp

This post seems like it was argued in good faith, there were a couple of examples given besides the banking one. I think the issue here is that while cryptography can allow for many different sets of parties to read a given piece of plain text, the only reasonable set of parties who should be able to read a text chat between myself and my friend is {me, my friend}. Just as we have no obligation to notify the cops of what we're saying when we have a private conversation in person. (Even if we give it to the cops in a sealed envelope, and the cops pinky promise not to open the envelope unless they can get a warrant.)