公开(公告)号：DE3682309D1

公开(公告)日：1991-12-12

申请号：DE3682309

申请日：1986-03-21

Applicant: IBM

Inventor： BASS WALTER ERNST ,  MATYAS STEPHEN MICHAEL ,  OSEAS JONATHAN NMN

IPC: H04L9/06 ,  H04L9/08 ,  H04L9/14 ,  H04L9/32

Abstract: A method for authenticating nodes/users and in protecting .data flow between nodes. This is facilitated by creating a dialogue involving authenticated encryption among the nodes. During each session, a key for use in cryptographic conversion is constructed among the node participants in order to permit symmetric authentication. The key is unique to the session. A different key is generated for each and every session. The building of the session key involves sharing of a minimal amount of information among the participants in the form of combining both a random number and authentication indicia.