@techreport{ietf-ipsec-isakmp-SA-revised-00, number = {draft-ietf-ipsec-isakmp-SA-revised-00}, type = {Internet-Draft}, institution = {Internet Engineering Task Force}, publisher = {Internet Engineering Task Force}, note = {Work in Progress}, url = {https://datatracker.ietf.org/doc/draft-ietf-ipsec-isakmp-SA-revised/00/}, author = {Dr. Baiju V. Patel and Michael Jeronimo}, title = {{Revised SA negotiation mode for ISAKMP/Oakley}}, pagetotal = 5, year = 1997, month = dec, day = 4, abstract = {ISAKMP/OAKLEY {[}2{]}{[}3{]} is the key management protocol defined by IPSEC working to be a framework for authentication, security association negotiation and key management. The protocol defines two phases whereby, in the phase 1, the peers are authenticates, the security association (SA) for ISAKMP/Oakley, and keying material is agreed upon by the peers to secure ISAKMP messages. The phase 2 is used to negotiate security association for security applications (e.g., IPSEC AH and ESP). When perfect forward secrecy is required, phase 2 is also used to exchange keying material for the application. However, when perfect forward secrecy is not a requirement, the keying material from the phase 1 is used to generate session keys for the secure communication applications. The proposal in this document is based on the observation that when perfect forward secrecy is not a requirement, if application specific SA was negotiated during phase 1, the application can start immediately after phase 1. The phase 2 can be used subsequently for key refresh on per need bases in the future. Therefore, this proposal reduces startup time for communication and improves the efficiency of the protocol. Remark: This document is NOT self-contained, it is intended as an addendum to {[}2{]}{[}3{]}. Thus, it is best read in conjunction with {[}2{]}{[}3{]}.}, }