scenario (Score 1)

Suppose I send you an encrypted email with a suspicious looking subject. I don't give you the key. The police come knocking at your door. You've done nothing wrong, but if you can't prove that, you go to jail. How do you prove you _don't_ have the key? Presumably, the law is meant for situations where there is a bi-directional conversation between two people using encrypted messages. Such a conversation can't occure if neither party has the decryption keys. In the real world, however, laws that can be abused generally are abused, and if this law does not require such strong evidence that the suspect has the decryption key, then there _will_ be cases like the one above.