US 11,381,554 B2 · NFC dynamic token with a seed key in said token

Abstract

A working method of an NFC dynamic token, comprising the following steps: after detecting that a preset press key is triggered, the NFC dynamic token activates NFC communication and builds connection with a mobile device via NFC channel; when the NFC dynamic token receives a second instruction from the mobile device, the NFC dynamic token obtains a seed key from the second instruction, stores the seed key and sends a message that writing is successful to the mobile device; when the NFC dynamic token receives a third instruction from the mobile device, the NFC uses self-stored seed data to generate a dynamic password and sends the dynamic password to the mobile device via the NFC channel. According to the present invention, the seed key is written into the NFC dynamic token via the NFC channel, which improves security and flexibility of the dynamic token.

Claims18

Dependent claims

A working method of an NFC (Near Field Communication) dynamic token, in which said NFC dynamic token is a device for generating a dynamic password in NFC, and a seed key is written into the NFC dynamic token via an NFC channel, wherein said method comprises the following steps:

pressing down a preset key for pressing down to trigger the preset key,
activating, by the NFC dynamic token, NFC communication after detecting that the preset key for pressing down is triggered, and building connection with a mobile device via the NFC channel;
and
obtaining, by the NFC dynamic token, the seed key from a second instruction when the NFC dynamic token receives the second instruction from the mobile device, storing the seed key, and sending a message that writing is successful to the mobile device via the NFC channel,
wherein the seed key obtained is used to generate the dynamic password for identity authentication;
and
the NFC dynamic token wirelessly and externally sends the dynamic password to the mobile device via the NFC channel;
then clears a screen showing the dynamic password.

5 more elements

An NFC dynamic token, wherein said NFC dynamic token comprises:

a means for detecting whether a preset key for pressing down is triggered;
a means for connecting to activate NFC communication after the means for detecting detects that the preset key for pressing down is triggered and builds connection with a mobile device via an NFC channel;
a means for receiving a second instruction from the mobile device;
a means for obtaining a seed key from the second instruction;
a means for storing the seed key;
and
a means for sending a message that writing is successful to the mobile device via the NFC channel,
wherein the seed key obtained is used to generate a dynamic password for identity authentication;
and
the NFC dynamic token sends the dynamic password to the mobile device via the NFC channel;
then clears a screen showing the dynamic password.

8 more elements

A working method of an NFC dynamic token whose seed key is written into the NFC dynamic token via an NFC channel, wherein said method comprises the following steps:

activating, by the NFC dynamic token, NFC communication after detecting that a preset key for pressing down is triggered, and building connection with a mobile device via an NFC channel;
generating, by the NFC dynamic token, a dynamic password by using a seed key written into the NFC dynamic token when the NFC dynamic token receives a third instruction from the mobile device, and sending the dynamic password to the mobile device via the NFC channel;
then clearing a screen showing the dynamic password.

Dependencies are inferred from the claim text.

NFC dynamic token with a seed key in said token

Life of this patent

NFC dynamic token with a seed key in said token

Life of this patent

Abstract

Claims18