15:10:47 <selsta> can someone comment the technical explanation for this? https://github.com/monero-project/monero/issues/9110#issuecomment-1873583785
15:11:02 <selsta> there are more seeds than private keys so some private keys have multiple seeds?
15:18:05 <rbrunner> Monero private keys do not use the full 256 bits. They don't go up to 2^256-1, but if I understand that correctly only up to 2^252 + 27742317777372353535851937790883648493
15:18:26 <rbrunner> Keys larger than this "magic" number get "reduced" with a modulo op to fit into the range.
15:18:40 <sech1> sc_reduce32
15:18:55 <sech1> You get 15-16 possible seeds
15:18:59 <rbrunner> If people use a process that comes up with fully random 256 bits, they can hit such key over the limit
15:20:24 <rbrunner> The seed system is able to encode the full 256 bits, thus no error, just a different seed if you read it out again after that reduction
15:31:33 <rbrunner> If everything is as it should, "Hexadecimal Seed" and "Private Spend Key" are identical. In the GitHub issue they are not.
15:44:58 <selsta> ty
15:46:35 <rbrunner> I stumbled over this when building the monerotech.info website and was pretty surprised myself first :)