Patent ID: 8565229

Claim:
A method of transmitting data in a data network, the method comprising: a sending intelligent electronic device (IED) calculating a first data integrity value based on a sending IED identification and a variable datum; the sending IED and a receiving IED in electrical communication using the data network, the sending IED forming a network packet comprising the first data integrity value and the variable datum, wherein the first data integrity value is calculated based on the sending IED identification and the variable datum, and, the sending IED omits the sending IED identification from the network packet; the sending IED transmitting the network packet; the receiving IED receiving the network packet comprising the first data integrity value and the variable datum; the receiving IED calculating a second data integrity value based on the sending IED identification and the received variable datum; and the receiving IED verifying the network packet by comparing the first data integrity value and the second data integrity value.