Sigh. This is incorrect. Pi does not give the &quot;nothing up my sleveve&quot; property, because if I have a desired bit sequence in mind, I can find it in Pi, then retroactively claim that because it comes from Pi it wasn&#x27;t &quot;up my sleeve&quot;. Specifically, the <i>methodology</i> of transforming the its of Pi into the desired key was &quot;up my sleeve&quot;.<p>What the authors propose here is much better. The methodology and protocol for transforming the seed digits is agreed to (&quot;committed&quot;) ahead of time, before the digits are known, and only later are the numbers generated.