3 ms·

This has frustratingly little information about how it was done.

• djsumdog 7y ago
  Yes, there isn't much. The two files have PDF headers; so I presume they were messing around with some PDF exploit experiments? or signed PDF documents? I wonder if we'll get more information; or if they're holding back until people take it seriously and attempt to get off SHA-1 for critical stuff?
• tedunangst 7y ago
  Truncate the original files to the differing blocks. Tada.
  • ummonk 7y ago
    Oh of course. So any of us could generate "new" hash collisions by adding new identical blocks to these...
• deleted 7y ago
  [deleted]