George Mason University Timing Analysis ECE 545 Lecture 10a.

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Presentation transcript:

George Mason University Timing Analysis ECE 545 Lecture 10a

2 Datapath vs. Control Unit Datapath Control Unit Data Inputs Data Outputs Control Inputs Control Outputs Control Signals Status Signals Determines Area Clock Frequency Determines Number of clock cycles

3 Confirming the number of clock cycles Datapath Data Inputs Data Outputs Control Outputs Control Signals Status Signals Verification of Functionality Number of clock cycles Testbench

4 GCM-AE(IV, P, A) = (C, T)

5 GHASH H (X 1 || X 2 || … || X m-1 || X m ) = Y m = T

6 GHASH H Pseudocode

7 GCTR K (ICB, X 1 || X 2 || … || X n-1, X n *) = (Y 1 || Y 2 || … || Y n-1 || Y n *)

8 GCTR K Pseudocode

9 Simplified Block Diagram of AES-GCM

10 Assumptions AES Enc takes 10 clock cycles GCM MULT takes 8 clock cycles

11 GCM-AD K (IV, C, A, T) = P, T’

12 GCM-AE(IV, P, A) = (C, T)

13 GCM-AD K (IV, C, A, T) = P, T’