Changes between Initial Version and Version 1 of Ticket #2018, comment 15


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Timestamp:
2014-02-10T19:22:58Z (10 years ago)
Author:
zooko
Comment:

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  • Ticket #2018, comment 15

    initial v1  
    2424(I chose "rounding up" rather than "randomizing" since it makes the attacker's job strictly harder, and the analysis much simpler.)
    2525
    26 Next I tried the rule: Let N = ceil(log2(F)).  If N >= 5, let X = N - 5; otherwise let X = N.  Let MaxPad = 2^X^.  Round the file size up to the nearest multiple of MaxPad.  This time:
     26Next I tried the rule: Let N = ceil(log2(F)).  If N >= 5, let X = N - 5; otherwise let X = N.  Let !MaxPad = 2^X^.  Round the file size up to the nearest multiple of !MaxPad.  This time:
    2727{{{
    2828% python ~/Music/fsize.py < sizes | sort -n |uniq -c | grep '^ *1 ' |wc -l