SPRUJ53B April 2024 – September 2024 TMS320F28P550SG , TMS320F28P550SJ , TMS320F28P559SJ-Q1
Figure 31-10 shows the F9 authentication mode of operation, where the input to the cryptographic core is XORed with the IV, and the output is XORed with the previous result to create the next result. The cryptographic core output is fed back as IV for the next block. The result is the output of the last XOR operation of the cryptographic core output.