Method and device for securing data packets to be transmitted via an interface

摘要

A method for securing data packets to be transmitted via an interface includes determining a check number over at least a portion of a first data packet and at least one portion of a second data packet. For this purpose, the first data packet is arranged according to a transfer protocol in a first data frame and the second data packet is arranged according to the transfer protocol in a second data frame.

主权项

1. A method for securing data packets to be received and transmitted via an interface, comprising:
identifying at least one bit of a first data packet, the first data packet being either received via the interface or to be transferred via the interface at a first time according to a transfer protocol; identifying at least one bit of a second data packet to be transmitted via the interface at a second time according to the transfer protocol; calculating a check number using the at least one bit of the first data packet and the at least one bit of the second data packet; transmitting the check number via the interface; transmitting with the interface a plurality of data packets after receiving the first data packet and prior to transmitting the second data packet; determining the check number with reference to the plurality of data packets; interrupting transmission of data packets in the plurality of data packets in response to a check event; determining the check number with reference to data packets in the plurality of data packets transmitted prior to the check event; and transmitting with the interface the check number and the second data packet in response to the check event.