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Security and Communication Networks
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Security and Communication Networks
/
2021
/
Article
/
Fig 5
/
Research Article
A Lightweight AES Coprocessor Based on RISC-V Custom Instructions
Figure 5
Three AES circuit structures with different
S-Box
numbers: (a) four
S-Boxes
, (b) single
S-Box,
and (c) twenty
S-Boxes
.
(a)
(b)
(c)