[HN Gopher] Forcing a file's CRC to any value (2018)
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       Forcing a file's CRC to any value (2018)
        
       Author : jstrieb
       Score  : 12 points
       Date   : 2021-11-23 20:14 UTC (2 hours ago)
        
 (HTM) web link (www.nayuki.io)
 (TXT) w3m dump (www.nayuki.io)
        
       | shric wrote:
       | What would be really clever is if it could alter, say, source
       | code or natural language prose of sufficient length to force a
       | specific CRC preserving the semantics of the program/prose e.g.
       | by reordering or changing words and/or identifiers. (changing 4
       | bytes to arbitrary values in a comment is against the spirit of
       | this)
        
         | pxx wrote:
         | Here's a repo that does something a little more generic that
         | you can adapt for that.
         | 
         | https://github.com/madler/spoof/
         | 
         | (you can naively use this to flip case where the case is not
         | semantically important, but you can also extend this as needed)
        
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       (page generated 2021-11-23 23:02 UTC)