Figure 4-3. Encode Operation: Hash Engine after Pad Engine
4.1.4
Hash Engine after Encryption Engine
Figure 4-4 shows the data flow when the position of the Hash engine is after the Encryption
engine and all four engines are enabled. In this configuration, the Hash engine calculates
the MAC value on the encrypted, compressed data with padding, ENC(CMP + Pad). The
data flow for the remaining engines is the same as described in Section 4.1.1, “Hash
Engine before Compression Engine".
820x – Data Sheet, DS-0157-D
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Hifn Confidential