Basic HTML version of Foils prepared April 7 1998
| 1)Transmitting over insecure channels |
| 2)Storage on insecure media (essentially the same ideas as 1) but applied to a different need) |
| 3)Authentication of computers or people at end of a message transmission. This includes digital signatures and password hashing |
| 4)Integrity check that message delivered was the one sent (this is different from ensuring that nobody read information which is 1)). This is called message integrity |