What kinds of checksums result in 2 digit hexadecimal?

Question

Is there any checksum that results in 2 digit hexadecimal?

I can only find NMEA Checksum...

references:

I have some data file that I want to perform reverse engineering to find the kind of checksum.

Thank you in advance,

Two digit hexadecimal is one byte, not two. – Tom Anderson Mar 14 '11 at 15:55 — Tom Anderson, Mar 14 '11 at 15:55

score 3 · Accepted Answer · answered Mar 14 '11 at 15:54

Two hex digits is one byte. You're looking for a checksum which produces one byte.

Obviously, you've got a simple additive checksum (sum the bytes of the input), and an xor of the input bytes.

It could also be a longer checksum of which only 8 bits have been taken.

It could also be some kind of CRC-8; Wikipedia knows about five kinds of standardised CRC-8.

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