Prior to transmission, a message is divided into multiple transmission units. A sub-message authentication code is obtained for each of the transmission units. A composed message authentication code is obtained for the whole message based on the sub-message authentication codes of the multiple transmission units. The multiple transmission units and the composed message authentication code are then transmitted. A receiver of the message receives a plurality of transmission units corresponding to the message. A local sub-message authentication code is calculated by the receiver for each transmission unit. A local composed message authentication code is calculated by the receiver based on the local sub-message authentication codes for the plurality of transmission units. The local composed message authentication code is compared to a received composed message authentication code to determine the integrity and/or authenticity of the received message.
申请公布号
WO2008052137(A2)
申请公布日期
2008.05.02
申请号
WO2007US82566
申请日期
2007.10.25
申请人
QUALCOMM INCORPORATED;PADDON, MICHAEL;ESCOTT, ADRIAN;ROSE, GREGORY GORDON;HAWKES, PHILIP M.
发明人
PADDON, MICHAEL;ESCOTT, ADRIAN;ROSE, GREGORY GORDON;HAWKES, PHILIP M.