AES Functional Description
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SWRU543–January 2019
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Advance Encryption Standard Accelerator (AES)
F8 Mode
Figure 17-6 shows the F8 feedback mode of operation for encryption and decryption. The input to the
cryptographic core is the result of the XOR operation of the previous cryptographic core output, a constant
IV, and a block counter. The output of the cryptographic core is XORed with the input to create the result.
In this mode, encryption and decryption use the same operations.
Figure 17-6. AES - F8 Mode
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