Security method and apparatus for electric vehicle power transfer

A security method for an electric vehicle (EV) power transfer system, performed by a charging authentication apparatus installed in an EV, the method comprising the steps of:

• receiving, by a charging controller of the charging authentication apparatus, an authentication request from a communication controller installed in the EV;
• and
• in response to the authentication request, transmitting third key information which is learned or stored beforehand to the charging controller installed in the EV,
• wherein the charging controller authenticates the third key information based on first key information which is learned or stored beforehand, and proceeds with a charging process when the authentication succeeds.

A security method for an electric vehicle (EV) power transfer system, performed by a charging controller installed in an EV, the method comprising the steps of:

• receiving second key information from a communication controller installed in the EV, wherein the communication controller receives an authentication request from outside of the EV, and transmits the authentication request to a charging authentication apparatus installed in the EV;
• receiving third key information from the charging authentication apparatus, wherein the charging authentication apparatus transmits the third key information to the charging controller in response to the authentication request;
• and
• authenticating the third key information based on the second key information;
• and
• proceeding with a charging process when the authentication succeeds.