Abstract: A method for a host to establish communication with a client comprising receiving a client-specific certificate and a pairing request message, verifying the client-specific certificate, verifying the pairing request message, sending a host-specific certificate and a first value, receiving a second value, verifying the second value; sending a third value, receiving an encrypted fourth value, decrypting the fourth value using a group key, determining the fourth value equals the third value, identifying the client received the group key correctly, and ending a verification message indicating successful establishment of communication.

Abstract: An approach for a first host to establish communication with a second host comprising receiving an signal from a client that the client is in enrolled in a first communication group with the first host and enrolled in a second communication group with the second host, sending a first host-specific certificate and a pairing request message, receiving a second host-specific certificate and a first value, verifying the second host-specific certificate, verifying the first value, sending a second value, receiving a third value and an encrypted message, determining a fourth value equals the third value, deriving a temporary key, decrypting the encrypted message using the temporary key, obtaining a group key for the second communication group from the decrypted message, sending a group key for the first communication group, and receiving a verification message from the second host indicating successful establishment of communication.

Abstract: A method for a host to establish communication with a client comprising receiving a client-specific certificate and a pairing request message, verifying the client-specific certificate, verifying the pairing request message, sending a host-specific certificate and a first value, receiving a second value, verifying the second value; sending a third value, receiving an encrypted fourth value, decrypting the fourth value using a group key, determining the fourth value equals the third value, identifying the client received the group key correctly, and ending a verification message indicating successful establishment of communication.

Abstract: An approach for a first host to establish communication with a second host comprising receiving an signal from a client that the client is in enrolled in a first communication group with the first host and enrolled in a second communication group with the second host, sending a first host-specific certificate and a pairing request message, receiving a second host-specific certificate and a first value, verifying the second host-specific certificate, verifying the first value, sending a second value, receiving a third value and an encrypted message, determining a fourth value equals the third value, deriving a temporary key, decrypting the encrypted message using the temporary key, obtaining a group key for the second communication group from the decrypted message, sending a group key for the first communication group, and receiving a verification message from the second host indicating successful establishment of communication.

Abstract: A vehicle has a passenger section, a control section and a door positioned between the passenger section and the control section. The door has an indented region on a side of the door facing the control section when the door is in a closed position, where the indented region has a surface. The vehicle also includes a second surface. A locking mechanism has a first locking portion, a second locking portion and a connecting portion connecting the first locking portion and the second locking portion. The locking mechanism locks the door in the closed position when the first locking portion engages the surface of the indented region and the second locking portion engages the second surface.

Abstract: A vehicle has a passenger section, a control section and a door positioned between the passenger section and the control section. The door has an indented region on a side of the door facing the control section when the door is in a closed position, where the indented region has a surface. The vehicle also includes a second surface. A locking mechanism has a first locking portion, a second locking portion and a connecting portion connecting the first locking portion and the second locking portion. The locking mechanism locks the door in the closed position when the first locking portion engages the surface of the indented region and the second locking portion engages the second surface.