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Table 6.
Power consumption of
S
0
-box for all possible input switching. (
T
=2
.
0K
,γ
=
1
.
0
E
k
, unit of power consumption: eV)
Input 1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
1
3.55
6.15
4.93 6.02 5.44 7.31 6.47 6.06 4.92 7.00 6.16
7.29
6.50
8.36
7.52
2
6.15
3.55
4.97 6.83 7.30 5.47 6.34 6.68 7.54 5.26 6.40 14.40 13.79 12.09 11.45
3
13.79 12.09 11.45 7.25 6.49 6.13 5.23 7.34 6.27 6.03 5.01 14.08 13.58 14.19 13.73
4
13.58 14.19 13.73 3.55 4.90 5.20 5.95 6.83 7.42 7.93 8.44 11.62 11.48 13.71 13.54
5
11.48 13.71 13.54 4.90 3.54 5.86 4.91 7.77 6.84 8.54 7.63 13.19 12.36 12.63 12.33
6
12.36 12.63 12.33 5.20 5.88 3.55 4.82 8.37 8.69 6.95 7.61 13.95 13.65 11.48 11.37
7
13.65 11.48 11.37 5.94 4.92 4.82 3.55 8.74 7.81 7.59 6.61 12.37 12.29 12.71 12.37
8
12.29 12.71 12.37 6.84 7.76 8.34 8.76 3.55 4.87 5.04 5.93 11.93 11.29 14.38 13.56
9
11.29 14.38 13.56 7.40 6.84 8.63 7.80 4.88 3.55 5.82 4.97 12.53 12.32 12.26 12.38
10
12.32 12.26 12.38 7.94 8.60 6.96 7.64 5.08 5.82 3.56 4.72 14.14 13.29 11.83 11.15
11
13.29 11.83 11.15 8.46 7.66 7.61 6.61 5.97 4.98 4.71 3.55 14.19 13.52 14.37 13.64
12
13.52 14.37 13.64 5.03 6.20 6.62 7.19 5.55 5.91 6.66 7.12 11.47 11.23 13.76 13.30
13
11.23 13.76 13.30 6.02 5.04 7.14 6.20 6.37 5.31 7.05 6.19 13.14 11.93 12.77 12.04
14
11.93 12.77 12.04 6.46 7.17 5.18 6.05 6.92 7.01 5.47 6.07 13.82 13.17 11.38 11.10
15
13.17 11.38 11.10 7.06 6.21 6.10 5.05 7.29 6.33 6.10 5.18
5.77
4.71
4.60
3.55
Fig. 16.
Correlation results for DPA attack of Serpent sub-module when the real sub-
key is 4 (
T
=2
.
0K
,γ
=1
.
0
E
k
).
a different correlation coecient value, but it will be significantly higher than
the correlation coecients of the wrong key guesses.
An observation is that all of the correlation coecients are much lower than
1. The reason is probably that the power data simulated by QCAPro is the total
power consumed by the sub-module over one clock cycle. As a result, some power
information that is not related to the target intermediate value is also included
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