Patent ID: 8345879
Filing Date: 2013-01-01
Classification: H04L

Abstract:
1. A computer implemented method for securing a sensor network with a three party password protocol, the computer implemented method comprising: sending, from a first sensor to a second sensor, a first message comprising a location of the first sensor and a first ephemeral value, wherein the first ephemeral value is encrypted using a first environmental value measured at the first sensor; sending, from the second sensor to a trusted third party, a second message comprising the location of the first sensor, a location of the second sensor, the first ephemeral value, wherein the first ephemeral value is encrypted using the first environmental value measured at the first sensor, and a second ephemeral value, wherein the second ephemeral value is encrypted using a second environmental value measured at the second sensor; sending, from the trusted third party to the first sensor, a third message comprising a third ephemeral value, wherein the third ephemeral value is encrypted using a third environmental value measured at the trusted third party, and a session key shared between the first sensor and the second sensor, wherein the session key is encrypted using a first ephemeral key; and sending, from the trusted third party to the second sensor, a fourth message comprising a fourth ephemeral value, wherein the fourth ephemeral value is encrypted using a fourth environmental value measured at the trusted third party, and the session key, wherein the session key is encrypted using a second ephemeral key; wherein the first environmental value, second environmental value, third environmental value, and fourth environmental value comprise different environmental values.