Abstract

IKE, which is the standard key management protocol for IPSEC, is said to have several known problems. To resolve the problems of the IKE, two protocol proposals are being discussed in the IETF. the IKE version 2 and Just Fast Keying protocols. They should satisfy several protocol design requirements such as the protocol simplicity, the endurability against DOS attacks, the degree of the PFS, the identity protection, the cryptographic negotiation, and the authentication methods. In this paper, we summarize the characteristics of these two protocols and try to analyze their implications according to the protocol design requirements.

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