Computer Security Basics by Deborha Russell and G. T. Gangemi Sr. Here are the changes from the 6/98 reprint: {411} definition of end-to-end encryption was changed to A type of encryption in which a message is encrypted when it is transmitted and is decrypted when it is received. Contrast with link encryption. {415} definition of link encryption was changed to A type of encryption in which a message is encrypted when it is transmitted and is decrypted and then encrypted again each time is passes through a network communications node. Contrast with end-to-end encryption.