TCP/IP: generating polynomial for CRC

Shaka

Senior member
Oct 13, 1999
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Does anyone know what the generating polynomial for CRC checking/generating is for TCP/IP? I've been googling for half and hour and I can't find it... maybe it doesn't exist....
 

Shaka

Senior member
Oct 13, 1999
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Ok, I found out.

The first 180 bits of the ethernet packet (header) uses CRC-32, which is an internation standard. The generating polynomial is: 0x104C11DB7.
 

VBboy

Diamond Member
Nov 12, 2000
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Stop writing computer viruses! :|


LOL, j/k. Glad you found your thing. Never heard of polynomials being used for CRC, but then again, I am not into cyclical redundancy checking :)
 

BCYL

Diamond Member
Jun 7, 2000
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Originally posted by: VBboy
Stop writing computer viruses! :|


LOL, j/k. Glad you found your thing. Never heard of polynomials being used for CRC, but then again, I am not into cyclical redundancy checking :)

Never heard of polynomials used for CRC? That's what CRC does! Divide the bit string with the polynomial and tag on the remainder at the end...
 

VBboy

Diamond Member
Nov 12, 2000
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Originally posted by: BCYL
Originally posted by: VBboy
Stop writing computer viruses! :|


LOL, j/k. Glad you found your thing. Never heard of polynomials being used for CRC, but then again, I am not into cyclical redundancy checking :)

Never heard of polynomials used for CRC? That's what CRC does! Divide the bit string with the polynomial and tag on the remainder at the end...

I must've been thinking of parity checking