Compact Implementations of HIGHT Block Cipher on IoT Platforms

Table 5

F0 operation in 8-bit AVR instruction sets.

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Input: input data (X)

Output: output data (F0 = X<<<1 XOR X<<<2 XOR X<<<7)

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1: MOV TMP, X

2: LSL TMP

3: ADC TMP, ZERO//X<<<1

4: MOV F0, TMP

5: LSL TMP

6: ADC TMP, ZERO//X<<<2

7: EOR F0, TMP//X<<<1 XOR X<<<2

8: LSL TMP

9: ADC TMP, ZERO

10: SWAP TMP//X<<<7

11: EOR F0, TMP//X<<<1 XOR X<<<2 XOR X<<<7

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