Re: FRAGMENTED BACKUPS VULNERABILITY!! IF YOU USE THEM, READ THIS!!
There are two things should be random in SSS. The coefficients of the polynomial. And the x-values where the polynomial is evaluated.
Non-random x values is probably relatively benign, since all information about the polynomial is in the f(x) values. Wikipedia does not even mention that the x values should be random.
Pseudo-random coefficients is certainly a bad idea. And printing the coefficients of the polynomial by using them as x-values is a horrendous mistake, I can hardly believe that it has been done!
Is there any way I can see on my 3-of-5 backup if it was made before or after that update was made? I am of course going to move my funds, but doing so before a new 3-of-5 backup is in place is also a risk.
EDIT: Could not spell 'pseudo'
Non-random x values is probably relatively benign, since all information about the polynomial is in the f(x) values. Wikipedia does not even mention that the x values should be random.
Pseudo-random coefficients is certainly a bad idea. And printing the coefficients of the polynomial by using them as x-values is a horrendous mistake, I can hardly believe that it has been done!
Is there any way I can see on my 3-of-5 backup if it was made before or after that update was made? I am of course going to move my funds, but doing so before a new 3-of-5 backup is in place is also a risk.
EDIT: Could not spell 'pseudo'