CRC for PNG file format

Posted by darkie15 on Stack Overflow See other posts from Stack Overflow or by darkie15
Published on 2010-03-27T23:52:30Z Indexed on 2010/03/28 0:03 UTC
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crc32

Hi All,

I need to read a PNG file and interpret all the information stored in it and print it in human readable format. While working on PNG, i understood that it uses CRC-32 for generating checksum for each chunk. But I could not understand the following information mentioned on the PNG file specification site: The polynomial used by PNG is: x32 + x26 + x23 + x22 + x16 + x12 + x11 + x10 + x8 + x7 + x5 + x4 + x2 + x + 1

Here is the link for reference: http://www.w3.org/TR/PNG/

Can anyone please help me in understanding this?

Regards, darkie

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