Message translator

A non-transitory, computer-readable storage medium having instructions stored thereon, which, when executed by one or more processors, causes the one or more processors to perform operations comprising:

• receiving a message frame from the host processor over an interface, the message frame having a first frame format that is configured to be transmitted on a data bus within a data time window at a first data rate;
• translating the message frame into a translated message frame having a second frame format, the second frame format including data bits representing a message, sequence bits representing a binary counter to a prevent relay attack, pad bits to fill out the translated message frame and allow bit alignment and security bits to detect if the data bits were modified between transmitting and receiving nodes coupled to the data bus by an unauthorized transmitter coupled to the data bus, the second frame format configured to be transmitted on the data bus within the data time window at a second data rate higher than the first data rate;
• and
• during the data time window, placing the data bits on the data bus, followed by the sequence bits, followed by a first portion of the pad bits, followed by the security bits, followed by a second portion of the pad bits.

A method comprising:

• receiving a message frame from the host processor over an interface, the message frame having a first frame format that is configured to be transmitted on a data bus within a data time window at a first data rate;
• translating the message frame into a translated message frame having a second frame format, the second frame format including data bits representing a message, sequence bits representing a binary counter to a prevent relay attack, pad bits to fill out the translated message frame and allow bit alignment and security bits to detect if the data bits were modified between transmitting and receiving nodes coupled to the data bus by an unauthorized transmitter coupled to the data bus, the second frame format configured to be transmitted on the data bus within the data time window at a second data rate higher than the first data rate;
• and
• during the data time window, placing the data bits on the data bus, followed by the sequence bits, followed by a first portion of the pad bits, followed by the security bits, followed by a second portion of the pad bits.