SPRUJ17H March 2022 – October 2024 AM2631 , AM2631-Q1 , AM2632 , AM2632-Q1 , AM2634 , AM2634-Q1
Figure 7-96 illustrates the CBC-MAC authentication mode of operations where the input to the crypto core is XOR-ed with the IV. The crypto core output is then fed back as IV for the next block. The last data input block is XOR-ed with an additional input value stored in the Temporary Buffer; this can be any pre-calculated value and is dependent on the alignment of the last input block. The result is the crypto core output of the last encryption operation.