公开(公告)号：US09485092B2

公开(公告)日：2016-11-01

申请号：US14298280

申请日：2014-06-06

Applicant: MASTERCARD INTERNATIONAL INCORPORATED

Inventor： Patrik Smets ,  Patrick Mestre ,  Dave Roberts ,  Duncan Garret

IPC: H04L9/08 ,  G06Q20/34 ,  G06Q20/38 ,  H04L9/30

CPC classification number: G06Q20/401 ,  G06Q20/102 ,  G06Q20/341 ,  G06Q20/3829 ,  G06Q20/409 ,  H04L9/0841 ,  H04L9/0869 ,  H04L9/3066 ,  H04L63/1408 ,  H04L2209/08 ,  H04L2209/16 ,  H04L2209/56

Abstract: A transaction device for establishing a shared secret with a point of interaction (POI) over a communications network to enable encrypted communications between the transaction device and the point of interaction, the device comprising: an input arranged to receive communications from the point of interaction; a processor arranged to generate a first communication according to a Diffie-Hellman protocol; an output arranged to send the first communication to the point of interaction; wherein the processor is arranged to apply a randomly generated blinding factor, r, when generating the first communication and wherein, in response to receiving a second communication from the point of interaction at the input, the second communication having been generated according to the Diffie-Hellman protocol, the processor is arranged to apply the randomly generated blinding factor and generate a shared secret according to the Diffie-Hellman protocol in dependence on data contained within the second communication.

Abstract translation: 一种交易设备，用于通过通信网络建立具有交互点（POI）的共享秘密，以实现交易设备与交互点之间的加密通信，该设备包括：输入端，用于从交互点接收通信; 布置成根据Diffie-Hellman协议生成第一通信的处理器; 布置成将第一通信发送到交互点的输出; 其中所述处理器被布置为在生成所述第一通信时应用随机生成的盲目因子r，并且其中响应于从所述输入处的交互点接收到第二通信，所述第二通信已经根据所述Diffie- Hellman协议，处理器被布置为根据Diffie-Hellman协议应用随机生成的盲目因子并根据第二通信中包含的数据生成共享秘密。