Link Encryption

An encryption technique that protects entire communications circuits by creating a secure tunnel between two points. This is done by using either a hardware or software solution that encrypts all traffic entering one end of the tunnel and decrypts all traffic exiting the other end of the tunnel. Encryption of information between nodes of a communications system. The application of online cryptooperations to a link of a communications system so that all information passing over the link is encrypted in its entirety.