V2X communication device and secured communication method thereof
Disclosed is a method for secured communication by a V2X communication device. A method for secured communication by a V2X communication device comprises the steps of: receiving a message on the basis of V2X communication; extracting adaptive certificate pre-distribution (ACPD) target information when the message includes the ACPD target information; pre-authenticating a short-term certificate; and transferring the pre-authenticated short-term certificate so that the pre-authenticated short-term certificate can be broadcasted at a predicted position.
1. A secured communication method of a V2X communication device, comprising:
receiving a message based on V2X communication;
extracting adaptive certificate pre-distribution (ACPD) target information based on the message including the ACPD target information, wherein the ACPD target information comprises at least one of a short-term certificate, time information based on a generation time of the ACPD target information, effective time information based on the short-term certificate, predicted location information based on the short-term certificate, and/or predicted time information based on the short-term certificate;
pre-authenticating the short-term certificate; and
transmitting the pre-authenticated short-term certificate,
wherein the message is at least one of a CAM (Cooperative Awareness Message) and/or a DENM (Decentralized Environmental Notification Message),
wherein the V2X communication is DSRC (Dedicated Short-Range Communication),
wherein the short-term certificate relates to a pseudonym certificate (PC) or an authorization ticket (AT), and
wherein the pre-authenticated short-term certificate is broadcasted at the predicted location.
2. The secured communication method of claim 1 , further comprising:
collecting at least one pre-authenticated short-term certificate to be broadcasted at the predicted location on a specific time; and
broadcasting an ACPD broadcast message, comprising the collected at least one pre-authenticated short-term certificate, at the predicted location on the specific time.
3. The secured communication method of claim 1 ,
wherein transmitting the pre-authenticated short-term certificate further comprises transmitting the short-term certificate to a transceiver or V2X communication device having a communication range covering the predicted location.
4. The secured communication method of claim 1 ,
wherein the short-term certificate is a short-term certificate to be used at timing based on the predicted time information, which is different from timing of a short-term certificate used in current message communication.
5. The secured communication method of claim 2 ,
wherein the ACPD broadcast message comprises at least one of the at least one pre-authenticated short-term certificate, period information based on a message broadcast period, and/or effective time information.
6. A V2X communication device comprising:
at least one transceiver configured to transmit and receive at least one of a wired signal or a wireless signal;
a processor configured to control the transceiver; and
a memory storing instructions that, when executed by the processor, perform operations comprising:
receiving a message based on V2X communication;
extracting adaptive certificate pre-distribution (ACPD) target information based on the message including the ACPD target information, wherein the ACPD target information comprises at least one of a short-term certificate, time information based on a generation time of the ACPD target information, effective time information based on the short-term certificate, predicted location information based on the short-term certificate is to be used, and/or predicted time information based on the short-term certificate is to be used;
pre-authenticating the short-term certificate; and
transmitting the pre-authenticated short-term certificate,
wherein the message is at least one of a CAM (Cooperative Awareness Message) and/or a DENM (Decentralized Environmental Notification Message),
wherein the V2X communication is DSRC (Dedicated Short-Range Communication),
wherein the short-term certificate relates to a pseudonym certificate (PC) or an authorization ticket (AT), and
wherein the pre-authenticated short-term certificate is broadcasted at the predicted location.
7. The V2X communication device of claim 6 ,
wherein the operations further comprise:
collecting at least one pre-authenticated short-term certificate to be broadcasted at the predicted location on a specific time; and
broadcasting an ACPD broadcast message, comprising the collected at least one pre-authenticated short-term certificate, at the predicted location on the specific time.
8. The V2X communication device of claim 6 ,
wherein the transmitted pre-authenticated short-term certificate is broadcasted through a transceiver having a communication range covering the predicted location.
9. The V2X communication device of claim 6 ,
wherein the short-term certificate is a short-term certificate to be used at timing based on the predicted time information, which is different from timing of a short-term certificate used in current message communication.
10. The V2X communication device of claim 7 ,
wherein the ACPD broadcast message comprises at least one of the at least one pre-authenticated short-term certificate, period information based on a message broadcast period, or effective time information.