Bully: Scholarship Edition

"
Security:
-> ELF Hash (Variant)
   -> Offset: 0
   -> Calculation Start: 4
   -> Calculation Length: Size - 4
"

private int CalculateELF(byte[] data, int offset, int size) {
    int t, sum = 0;

    for (offset += size; size > 0; --size) {
        sum = data[--offset] + (sum << 4);
        t = sum & 0xF000000;

        if (t != 0)
            sum ^= (t ^ (t >> 24));
    }

    return sum;
}