Other Characteristics
easy to compute and check in software
amenable to incremental updates
not as strong as CRC
- assume any bit error results in uniform csum value on [0000..fffe], then Prob(cksumvalid|error) = 1 in 65536, about 3x10^-5…..ok if errors are rare
A + B = B + A (commutativity)
Excluding 0000, forms Abelian Group