[HN Gopher] How Rainbow Tables Work
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       How Rainbow Tables Work
        
       Author : susam
       Score  : 47 points
       Date   : 2020-11-24 18:43 UTC (4 hours ago)
        
 (HTM) web link (kestas.kuliukas.com)
 (TXT) w3m dump (kestas.kuliukas.com)
        
       | hoppla wrote:
       | Is anyone still using rainbow tables? I have not heard much of it
       | since GPU cracking
        
         | marcosdumay wrote:
         | Whatever you can do online with a GPU, you can do much in an
         | offline session stored in a file.
         | 
         | Sharing rainbow tables over the internet is probably dead, but
         | your disks can keep more hashes than you can calculate quickly.
        
       | lomkju wrote:
       | How to beat rainbow tables, add some salt.
        
         | 867-5309 wrote:
         | how to discomfort or discourage
        
       | fwip wrote:
       | I feel like I'm missing something fundamental in this paragraph:
       | 
       | > Rainbow tables differ in that they don't use multiple tables
       | with different reduction functions, they only use one table.
       | However in Rainbow Tables a different reduction function is used
       | for each column. This way different tables with different
       | reduction functions aren't needed, because different reduction
       | functions are used within the same table.
       | 
       | What exactly is the structure of the final rainbow table - does
       | it contain a column for each reduction function, or does it still
       | only contain "start text" and "last hash" of each chain? I would
       | loved to have seen a diagram of the table structure here. (From
       | my own reading, I think these "extra columns" are not stored
       | anywhere).
        
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       (page generated 2020-11-24 23:00 UTC)