Other valid passphrases?February 2 2012 at 10:54 AM
|lawgin (no login)|
Response to cool.
I don't know the likelihood of other passphrases generating the same seed. That sounds like another project. My intuition tells me that it is unlikely that there would be more than one set of 7 perfect squares whose sum is a given number, especially when the numbers being squared are restricted to integers in the range 48-122. But my intuition is often wrong.
A better way to generate the seed might have been to weight the characters in the passphrase. That way the order would make a difference.
seed=a^2 + 2b^2 + 4c^2 + 8d^2 +...