Patent ID: 7885411
Filing Date: 2011-02-08
Classification: H04L,H04W

Abstract:
1. A key agreement method carried out by a first system in conjunction with a second system over a bidirectional communication path between the first system and the second system, the method comprising: generating a first key pair having a first public key and a first private key; generating a second key pair having a second public key and a second private key, the second public key being generated based upon a secret known to the first system and the second system; sending the second public key and the first public key to the second system; receiving a third public key and a fourth public key generated by the second system, the fourth public key being generated based upon the secret; and calculating a master key based upon the first private key, the second private key, the third public key and the fourth public key, wherein the first key pair and the third public key are independent of the secret.