SPRUJ17H March 2022 – October 2024 AM2631 , AM2631-Q1 , AM2632 , AM2632-Q1 , AM2634 , AM2634-Q1
Figure 7-95 illustrates the f9 authentication mode of operation where the input to the crypto core is XOR-ed with the IV, the output is XOR-ed with the previous result to create the next result. The crypto core output is fed back as IV for the next block. The result is the output of the last XOR operation of the crypto core output.