Question: In GCM, we define S as S = GHASH(A||0v||C||0u||[len(A)]||[len(C)]). What is u defined as?
Options
A : 64 ceil[len(A)/128] – len(A)
B : 64 ceil[len(C)/128] – len(C)
C : 128 ceil[len(A)/128] – len(A)
D : 128 ceil[len(C)/128] – len(C)
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