Patent ID: 7639802
Filing Date: 2009-12-29
Classification: H04L,H04W

Abstract:
1. In a Mobile Node supporting Mobile IP, a method of generating an authentication key to be shared between the Mobile Node and a Foreign Agent to which the Mobile Node has roamed, comprising: dynamically generating a first key material at the Mobile Node supporting Mobile IP; transmitting the first key material by the Mobile Node to the Foreign Agent to enable the Foreign Agent to generate a Mobile-Foreign authentication key shared between the Mobile Node and the Foreign Agent; receiving a second key material by the Mobile Node from the Foreign Agent; and dynamically generating by the Mobile Node the Mobile-Foreign authentication key shared between the Mobile Node and the Foreign Agent from the second key material; wherein dynamically generating the first key material includes computing the value of X=(g wherein dynamically generating the Mobile-Foreign authentication key shared between the Mobile Node and the Foreign Agent includes computing the value k=(Y