CHECKSUM_FUTEK

Reusable C implementation of the FUTEK weighted additive 8-bit checksum.

Files

• include/checksum_futek.h
• src/checksum_futek.c
• examples/main.c

Checksum Parameters

Parameter	Value
Name	Checksum/FUTEK
Type	Weighted additive checksum
Output Width	8-bit
Final Mask	0xFF
Input Length	Variable
Weighting	Byte index + 1

Checksum Formula

Checksum = Σ(byte[index] × (index + 1)) & 0xFF