C8051F960-B-GM Datasheet, PDF (182/492 Pages) Silicon Laboratories – Ultra Low Power 128K, LCD MCU Family

C8051F96x
14.2.3. Extended Key Output Byte Order
When using a key length of 128-bits, the key output is in the same order as the bytes were written. When
using an extended key of 192-bits or 256-bits. The extended portion of the key comes out first, before the
first 16-bytes of the extended key.This is illustrated in Table 14.1.
Table 14.1. Extended Key Output Byte Order
Size
Bits Bytes
128
16
192
24
256
32
Input
Order
K0...15
K0...23
K0...31
Output
Order
K16...23
K16...23
K24...31
K0...15
K0...15
K0...15
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