IEEE Consumer Electronics Magazine - January/February 2022 - 13

Figure 4. Time taken to construct a fuzzy vault and RAFV over various sized vaults. (a) RAFV with 85 quadrants
and varying number of rotations. (b) RAFV with 341 quadrants and varying number of rotations.
and, therefore, more points are being rotated.
The biggest impact on the performance for RAFV
is the number of rotations carried out, for example,
a 5000 point vault rotated 16 times is
5.2 times quicker when compared with a vault
rotated 256 times.
Figure 4(b) shows the construction time for
RAFV with 341 quadrants present within the
vault. This graph shows that a vault rotated
256 times produces similar results to a vault with
January/February 2022
1000 fewer points but divided into 85 quadrants
[see Figure 4(a), the case of a vault size equals to
4000]. This is because the vault used for producing
the results shown in Figure 4(b) has been
divided once more, compared to the vault used
in Figure 4(a), introducing an additional layer of
smaller yet more abundant quadrants. These
smaller quadrants are more likely to be selected
for rotation as there is more of them, however,
they each represent a smaller area of the vault,
13

IEEE Consumer Electronics Magazine - January/February 2022

Table of Contents for the Digital Edition of IEEE Consumer Electronics Magazine - January/February 2022

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IEEE Consumer Electronics Magazine - January/February 2022 - Cover1
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