Not a bug: Custom CRC-32 does not work correctly

Bug reports concerning HxD.
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Sergeiko
Posts: 1
Joined: 15 Jul 2009 01:35

Not a bug: Custom CRC-32 does not work correctly

Post by Sergeiko » 15 Jul 2009 01:43

Hi,

This is a very fast and convenient tool. Very nice! However, I encountered one problem.
I tried using "Custom CRC" feature and entered 0x04C11DB7 for polynomial (classic Ethernet CRC-32) , 0 - initial value, 0 - Output XOR. For the input data I highlighted single byte 0x00. I expected to get 0xD202EF8D; however, got 0x00000000 instead. For the input of 0xFF I expected 0xFF000000 but got 0xB1F740B4 instead.

Please, help

Maël
Site Admin
Posts: 1149
Joined: 12 Mar 2005 14:15

Re: Custom CRC-32 does not work correctly

Post by Maël » 15 Jul 2009 05:35

You seem to gave the wrong settings.
Input and output should be FFFFFFFF.
Reflexion in and out should both be checked.

Ethernet CRC is the same as the predefined CRC-32.

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