Abstract: Examples of the present disclosure relate to a device, method, and medium storing instructions for implementing a secure controller area network (CAN) in a vehicle. Techniques discussed herein include a first electronic controller unit (ECU) dedicated to control a first electronic component of a vehicle, wherein the first ECU comprises a first CAN identification (ID) and a first key. The techniques may also include a second ECU dedicated to control a second electronic component of the vehicle. In an example, the first ECU is to send the first key to the second ECU, and wherein the first ECU is to encrypt the first CAN ID portion of a secure CAN message using the first key. In an example, the second ECU is to decrypt the first CAN ID portion of the secure CAN message using the first key from the message table.